| /* |
| * Copyright (C) 2015 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| |
| #if ENABLE(WEBGL) |
| #include "WebGLRenderingContextBase.h" |
| |
| #include "ANGLEInstancedArrays.h" |
| #include "CachedImage.h" |
| #include "DOMWindow.h" |
| #include "Document.h" |
| #include "EXTBlendMinMax.h" |
| #include "EXTFragDepth.h" |
| #include "EXTShaderTextureLOD.h" |
| #include "EXTTextureFilterAnisotropic.h" |
| #include "EXTsRGB.h" |
| #include "ExceptionCode.h" |
| #include "Extensions3D.h" |
| #include "Frame.h" |
| #include "FrameLoader.h" |
| #include "FrameLoaderClient.h" |
| #include "FrameView.h" |
| #include "GraphicsContext.h" |
| #include "HTMLCanvasElement.h" |
| #include "HTMLImageElement.h" |
| #include "HTMLVideoElement.h" |
| #include "ImageBuffer.h" |
| #include "ImageData.h" |
| #include "IntSize.h" |
| #include "Logging.h" |
| #include "MainFrame.h" |
| #include "NotImplemented.h" |
| #include "OESElementIndexUint.h" |
| #include "OESStandardDerivatives.h" |
| #include "OESTextureFloat.h" |
| #include "OESTextureFloatLinear.h" |
| #include "OESTextureHalfFloat.h" |
| #include "OESTextureHalfFloatLinear.h" |
| #include "OESVertexArrayObject.h" |
| #include "Page.h" |
| #include "RenderBox.h" |
| #include "Settings.h" |
| #include "WebGL2RenderingContext.h" |
| #include "WebGLActiveInfo.h" |
| #include "WebGLBuffer.h" |
| #include "WebGLCompressedTextureATC.h" |
| #include "WebGLCompressedTexturePVRTC.h" |
| #include "WebGLCompressedTextureS3TC.h" |
| #include "WebGLContextAttributes.h" |
| #include "WebGLContextEvent.h" |
| #include "WebGLContextGroup.h" |
| #include "WebGLDebugRendererInfo.h" |
| #include "WebGLDebugShaders.h" |
| #include "WebGLDepthTexture.h" |
| #include "WebGLDrawBuffers.h" |
| #include "WebGLFramebuffer.h" |
| #include "WebGLLoseContext.h" |
| #include "WebGLProgram.h" |
| #include "WebGLRenderbuffer.h" |
| #include "WebGLRenderingContext.h" |
| #include "WebGLShader.h" |
| #include "WebGLShaderPrecisionFormat.h" |
| #include "WebGLTexture.h" |
| #include "WebGLUniformLocation.h" |
| |
| #include <runtime/JSCInlines.h> |
| #include <runtime/TypedArrayInlines.h> |
| #include <runtime/Uint32Array.h> |
| #include <wtf/CheckedArithmetic.h> |
| #include <wtf/StdLibExtras.h> |
| #include <wtf/text/CString.h> |
| #include <wtf/text/StringBuilder.h> |
| |
| namespace WebCore { |
| |
| const double secondsBetweenRestoreAttempts = 1.0; |
| const int maxGLErrorsAllowedToConsole = 256; |
| |
| namespace { |
| |
| Platform3DObject objectOrZero(WebGLObject* object) |
| { |
| return object ? object->object() : 0; |
| } |
| |
| GC3Dint clamp(GC3Dint value, GC3Dint min, GC3Dint max) |
| { |
| if (value < min) |
| value = min; |
| if (value > max) |
| value = max; |
| return value; |
| } |
| |
| // Return true if a character belongs to the ASCII subset as defined in |
| // GLSL ES 1.0 spec section 3.1. |
| bool validateCharacter(unsigned char c) |
| { |
| // Printing characters are valid except " $ ` @ \ ' DEL. |
| if (c >= 32 && c <= 126 |
| && c != '"' && c != '$' && c != '`' && c != '@' && c != '\\' && c != '\'') |
| return true; |
| // Horizontal tab, line feed, vertical tab, form feed, carriage return |
| // are also valid. |
| if (c >= 9 && c <= 13) |
| return true; |
| return false; |
| } |
| |
| bool isPrefixReserved(const String& name) |
| { |
| if (name.startsWith("gl_") || name.startsWith("webgl_") || name.startsWith("_webgl_")) |
| return true; |
| return false; |
| } |
| |
| // Strips comments from shader text. This allows non-ASCII characters |
| // to be used in comments without potentially breaking OpenGL |
| // implementations not expecting characters outside the GLSL ES set. |
| class StripComments { |
| public: |
| StripComments(const String& str) |
| : m_parseState(BeginningOfLine) |
| , m_sourceString(str) |
| , m_length(str.length()) |
| , m_position(0) |
| { |
| parse(); |
| } |
| |
| String result() |
| { |
| return m_builder.toString(); |
| } |
| |
| private: |
| bool hasMoreCharacters() const |
| { |
| return (m_position < m_length); |
| } |
| |
| void parse() |
| { |
| while (hasMoreCharacters()) { |
| process(current()); |
| // process() might advance the position. |
| if (hasMoreCharacters()) |
| advance(); |
| } |
| } |
| |
| void process(UChar); |
| |
| bool peek(UChar& character) const |
| { |
| if (m_position + 1 >= m_length) |
| return false; |
| character = m_sourceString[m_position + 1]; |
| return true; |
| } |
| |
| UChar current() const |
| { |
| ASSERT_WITH_SECURITY_IMPLICATION(m_position < m_length); |
| return m_sourceString[m_position]; |
| } |
| |
| void advance() |
| { |
| ++m_position; |
| } |
| |
| bool isNewline(UChar character) const |
| { |
| // Don't attempt to canonicalize newline related characters. |
| return (character == '\n' || character == '\r'); |
| } |
| |
| void emit(UChar character) |
| { |
| m_builder.append(character); |
| } |
| |
| enum ParseState { |
| // Have not seen an ASCII non-whitespace character yet on |
| // this line. Possible that we might see a preprocessor |
| // directive. |
| BeginningOfLine, |
| |
| // Have seen at least one ASCII non-whitespace character |
| // on this line. |
| MiddleOfLine, |
| |
| // Handling a preprocessor directive. Passes through all |
| // characters up to the end of the line. Disables comment |
| // processing. |
| InPreprocessorDirective, |
| |
| // Handling a single-line comment. The comment text is |
| // replaced with a single space. |
| InSingleLineComment, |
| |
| // Handling a multi-line comment. Newlines are passed |
| // through to preserve line numbers. |
| InMultiLineComment |
| }; |
| |
| ParseState m_parseState; |
| String m_sourceString; |
| unsigned m_length; |
| unsigned m_position; |
| StringBuilder m_builder; |
| }; |
| |
| void StripComments::process(UChar c) |
| { |
| if (isNewline(c)) { |
| // No matter what state we are in, pass through newlines |
| // so we preserve line numbers. |
| emit(c); |
| |
| if (m_parseState != InMultiLineComment) |
| m_parseState = BeginningOfLine; |
| |
| return; |
| } |
| |
| UChar temp = 0; |
| switch (m_parseState) { |
| case BeginningOfLine: |
| if (WTF::isASCIISpace(c)) { |
| emit(c); |
| break; |
| } |
| |
| if (c == '#') { |
| m_parseState = InPreprocessorDirective; |
| emit(c); |
| break; |
| } |
| |
| // Transition to normal state and re-handle character. |
| m_parseState = MiddleOfLine; |
| process(c); |
| break; |
| |
| case MiddleOfLine: |
| if (c == '/' && peek(temp)) { |
| if (temp == '/') { |
| m_parseState = InSingleLineComment; |
| emit(' '); |
| advance(); |
| break; |
| } |
| |
| if (temp == '*') { |
| m_parseState = InMultiLineComment; |
| // Emit the comment start in case the user has |
| // an unclosed comment and we want to later |
| // signal an error. |
| emit('/'); |
| emit('*'); |
| advance(); |
| break; |
| } |
| } |
| |
| emit(c); |
| break; |
| |
| case InPreprocessorDirective: |
| // No matter what the character is, just pass it |
| // through. Do not parse comments in this state. This |
| // might not be the right thing to do long term, but it |
| // should handle the #error preprocessor directive. |
| emit(c); |
| break; |
| |
| case InSingleLineComment: |
| // The newline code at the top of this function takes care |
| // of resetting our state when we get out of the |
| // single-line comment. Swallow all other characters. |
| break; |
| |
| case InMultiLineComment: |
| if (c == '*' && peek(temp) && temp == '/') { |
| emit('*'); |
| emit('/'); |
| m_parseState = MiddleOfLine; |
| advance(); |
| break; |
| } |
| |
| // Swallow all other characters. Unclear whether we may |
| // want or need to just emit a space per character to try |
| // to preserve column numbers for debugging purposes. |
| break; |
| } |
| } |
| } // namespace anonymous |
| |
| class WebGLRenderingContextLostCallback : public GraphicsContext3D::ContextLostCallback { |
| WTF_MAKE_FAST_ALLOCATED; |
| public: |
| explicit WebGLRenderingContextLostCallback(WebGLRenderingContextBase* cb) : m_context(cb) { } |
| virtual void onContextLost() override { m_context->forceLostContext(WebGLRenderingContext::RealLostContext); } |
| virtual ~WebGLRenderingContextLostCallback() {} |
| private: |
| WebGLRenderingContextBase* m_context; |
| }; |
| |
| class WebGLRenderingContextErrorMessageCallback : public GraphicsContext3D::ErrorMessageCallback { |
| WTF_MAKE_FAST_ALLOCATED; |
| public: |
| explicit WebGLRenderingContextErrorMessageCallback(WebGLRenderingContextBase* cb) : m_context(cb) { } |
| virtual void onErrorMessage(const String& message, GC3Dint) override |
| { |
| if (m_context->m_synthesizedErrorsToConsole) |
| m_context->printGLErrorToConsole(message); |
| } |
| virtual ~WebGLRenderingContextErrorMessageCallback() { } |
| private: |
| WebGLRenderingContextBase* m_context; |
| }; |
| |
| std::unique_ptr<WebGLRenderingContextBase> WebGLRenderingContextBase::create(HTMLCanvasElement* canvas, WebGLContextAttributes* attrs, const String& type) |
| { |
| #if !ENABLE(WEBGL2) |
| UNUSED_PARAM(type); |
| #endif |
| |
| Document& document = canvas->document(); |
| Frame* frame = document.frame(); |
| if (!frame) |
| return nullptr; |
| |
| // The FrameLoaderClient might block creation of a new WebGL context despite the page settings; in |
| // particular, if WebGL contexts were lost one or more times via the GL_ARB_robustness extension. |
| if (!frame->loader().client().allowWebGL(frame->settings().webGLEnabled())) { |
| canvas->dispatchEvent(WebGLContextEvent::create(eventNames().webglcontextcreationerrorEvent, false, true, "Web page was not allowed to create a WebGL context.")); |
| return nullptr; |
| } |
| |
| bool isPendingPolicyResolution = false; |
| Document& topDocument = document.topDocument(); |
| Page* page = topDocument.page(); |
| bool forcingPendingPolicy = frame->settings().isForcePendingWebGLPolicy(); |
| |
| if (forcingPendingPolicy || (page && !topDocument.url().isLocalFile())) { |
| WebGLLoadPolicy policy = forcingPendingPolicy ? WebGLPendingCreation : page->mainFrame().loader().client().webGLPolicyForURL(topDocument.url()); |
| |
| if (policy == WebGLBlockCreation) { |
| LOG(WebGL, "The policy for this URL (%s) is to block WebGL.", topDocument.url().host().utf8().data()); |
| return nullptr; |
| } |
| |
| if (policy == WebGLPendingCreation) { |
| LOG(WebGL, "WebGL policy is pending. May need to be resolved later."); |
| isPendingPolicyResolution = true; |
| } |
| } |
| |
| GraphicsContext3D::Attributes attributes = attrs ? attrs->attributes() : GraphicsContext3D::Attributes(); |
| |
| if (attributes.antialias) { |
| if (!frame->settings().openGLMultisamplingEnabled()) |
| attributes.antialias = false; |
| } |
| |
| attributes.noExtensions = true; |
| attributes.shareResources = false; |
| attributes.preferDiscreteGPU = true; |
| |
| if (frame->settings().forceSoftwareWebGLRendering()) |
| attributes.forceSoftwareRenderer = true; |
| |
| if (page) |
| attributes.devicePixelRatio = page->deviceScaleFactor(); |
| |
| if (isPendingPolicyResolution) { |
| LOG(WebGL, "Create a WebGL context that looks real, but will require a policy resolution if used."); |
| std::unique_ptr<WebGLRenderingContextBase> renderingContext = nullptr; |
| #if ENABLE(WEBGL2) |
| if (type == "experimental-webgl2") |
| renderingContext = std::unique_ptr<WebGL2RenderingContext>(new WebGL2RenderingContext(canvas, attributes)); |
| else |
| #endif |
| renderingContext = std::unique_ptr<WebGLRenderingContext>(new WebGLRenderingContext(canvas, attributes)); |
| renderingContext->suspendIfNeeded(); |
| return renderingContext; |
| } |
| |
| HostWindow* hostWindow = document.view()->root()->hostWindow(); |
| RefPtr<GraphicsContext3D> context(GraphicsContext3D::create(attributes, hostWindow)); |
| |
| if (!context || !context->makeContextCurrent()) { |
| canvas->dispatchEvent(WebGLContextEvent::create(eventNames().webglcontextcreationerrorEvent, false, true, "Could not create a WebGL context.")); |
| return nullptr; |
| } |
| |
| Extensions3D* extensions = context->getExtensions(); |
| if (extensions->supports("GL_EXT_debug_marker")) |
| extensions->pushGroupMarkerEXT("WebGLRenderingContext"); |
| |
| std::unique_ptr<WebGLRenderingContextBase> renderingContext = nullptr; |
| #if ENABLE(WEBGL2) |
| if (type == "experimental-webgl2") |
| renderingContext = std::unique_ptr<WebGL2RenderingContext>(new WebGL2RenderingContext(canvas, context, attributes)); |
| else |
| #endif |
| renderingContext = std::unique_ptr<WebGLRenderingContext>(new WebGLRenderingContext(canvas, context, attributes)); |
| renderingContext->suspendIfNeeded(); |
| |
| return renderingContext; |
| } |
| |
| WebGLRenderingContextBase::WebGLRenderingContextBase(HTMLCanvasElement* passedCanvas, GraphicsContext3D::Attributes attributes) |
| : CanvasRenderingContext(passedCanvas) |
| , ActiveDOMObject(&passedCanvas->document()) |
| , m_context(0) |
| , m_dispatchContextLostEventTimer(*this, &WebGLRenderingContextBase::dispatchContextLostEvent) |
| , m_restoreAllowed(false) |
| , m_restoreTimer(*this, &WebGLRenderingContextBase::maybeRestoreContext) |
| , m_generatedImageCache(0) |
| , m_contextLost(false) |
| , m_contextLostMode(SyntheticLostContext) |
| , m_attributes(attributes) |
| , m_synthesizedErrorsToConsole(true) |
| , m_numGLErrorsToConsoleAllowed(maxGLErrorsAllowedToConsole) |
| , m_isPendingPolicyResolution(true) |
| , m_hasRequestedPolicyResolution(false) |
| { |
| } |
| |
| WebGLRenderingContextBase::WebGLRenderingContextBase(HTMLCanvasElement* passedCanvas, PassRefPtr<GraphicsContext3D> context, GraphicsContext3D::Attributes attributes) |
| : CanvasRenderingContext(passedCanvas) |
| , ActiveDOMObject(&passedCanvas->document()) |
| , m_context(context) |
| , m_dispatchContextLostEventTimer(*this, &WebGLRenderingContextBase::dispatchContextLostEvent) |
| , m_restoreAllowed(false) |
| , m_restoreTimer(*this, &WebGLRenderingContextBase::maybeRestoreContext) |
| , m_generatedImageCache(4) |
| , m_contextLost(false) |
| , m_contextLostMode(SyntheticLostContext) |
| , m_attributes(attributes) |
| , m_synthesizedErrorsToConsole(true) |
| , m_numGLErrorsToConsoleAllowed(maxGLErrorsAllowedToConsole) |
| , m_isPendingPolicyResolution(false) |
| , m_hasRequestedPolicyResolution(false) |
| { |
| ASSERT(m_context); |
| m_contextGroup = WebGLContextGroup::create(); |
| m_contextGroup->addContext(this); |
| |
| m_context->setWebGLContext(this); |
| |
| m_maxViewportDims[0] = m_maxViewportDims[1] = 0; |
| m_context->getIntegerv(GraphicsContext3D::MAX_VIEWPORT_DIMS, m_maxViewportDims); |
| |
| setupFlags(); |
| initializeNewContext(); |
| } |
| |
| void WebGLRenderingContextBase::initializeNewContext() |
| { |
| ASSERT(!m_contextLost); |
| m_needsUpdate = true; |
| m_markedCanvasDirty = false; |
| m_activeTextureUnit = 0; |
| m_packAlignment = 4; |
| m_unpackAlignment = 4; |
| m_unpackFlipY = false; |
| m_unpackPremultiplyAlpha = false; |
| m_unpackColorspaceConversion = GraphicsContext3D::BROWSER_DEFAULT_WEBGL; |
| m_boundArrayBuffer = nullptr; |
| m_currentProgram = nullptr; |
| m_framebufferBinding = nullptr; |
| m_renderbufferBinding = nullptr; |
| m_depthMask = true; |
| m_stencilEnabled = false; |
| m_stencilMask = 0xFFFFFFFF; |
| m_stencilMaskBack = 0xFFFFFFFF; |
| m_stencilFuncRef = 0; |
| m_stencilFuncRefBack = 0; |
| m_stencilFuncMask = 0xFFFFFFFF; |
| m_stencilFuncMaskBack = 0xFFFFFFFF; |
| m_layerCleared = false; |
| m_numGLErrorsToConsoleAllowed = maxGLErrorsAllowedToConsole; |
| |
| m_clearColor[0] = m_clearColor[1] = m_clearColor[2] = m_clearColor[3] = 0; |
| m_scissorEnabled = false; |
| m_clearDepth = 1; |
| m_clearStencil = 0; |
| m_colorMask[0] = m_colorMask[1] = m_colorMask[2] = m_colorMask[3] = true; |
| |
| GC3Dint numCombinedTextureImageUnits = 0; |
| m_context->getIntegerv(GraphicsContext3D::MAX_COMBINED_TEXTURE_IMAGE_UNITS, &numCombinedTextureImageUnits); |
| m_textureUnits.clear(); |
| m_textureUnits.resize(numCombinedTextureImageUnits); |
| |
| GC3Dint numVertexAttribs = 0; |
| m_context->getIntegerv(GraphicsContext3D::MAX_VERTEX_ATTRIBS, &numVertexAttribs); |
| m_maxVertexAttribs = numVertexAttribs; |
| |
| m_maxTextureSize = 0; |
| m_context->getIntegerv(GraphicsContext3D::MAX_TEXTURE_SIZE, &m_maxTextureSize); |
| m_maxTextureLevel = WebGLTexture::computeLevelCount(m_maxTextureSize, m_maxTextureSize); |
| m_maxCubeMapTextureSize = 0; |
| m_context->getIntegerv(GraphicsContext3D::MAX_CUBE_MAP_TEXTURE_SIZE, &m_maxCubeMapTextureSize); |
| m_maxCubeMapTextureLevel = WebGLTexture::computeLevelCount(m_maxCubeMapTextureSize, m_maxCubeMapTextureSize); |
| m_maxRenderbufferSize = 0; |
| m_context->getIntegerv(GraphicsContext3D::MAX_RENDERBUFFER_SIZE, &m_maxRenderbufferSize); |
| |
| // These two values from EXT_draw_buffers are lazily queried. |
| m_maxDrawBuffers = 0; |
| m_maxColorAttachments = 0; |
| |
| m_backDrawBuffer = GraphicsContext3D::BACK; |
| m_drawBuffersWebGLRequirementsChecked = false; |
| m_drawBuffersSupported = false; |
| |
| m_vertexAttribValue.resize(m_maxVertexAttribs); |
| |
| if (!isGLES2NPOTStrict()) |
| createFallbackBlackTextures1x1(); |
| |
| IntSize canvasSize = clampedCanvasSize(); |
| m_context->reshape(canvasSize.width(), canvasSize.height()); |
| m_context->viewport(0, 0, canvasSize.width(), canvasSize.height()); |
| m_context->scissor(0, 0, canvasSize.width(), canvasSize.height()); |
| |
| m_context->setContextLostCallback(std::make_unique<WebGLRenderingContextLostCallback>(this)); |
| m_context->setErrorMessageCallback(std::make_unique<WebGLRenderingContextErrorMessageCallback>(this)); |
| } |
| |
| void WebGLRenderingContextBase::setupFlags() |
| { |
| ASSERT(m_context); |
| |
| if (Page* page = canvas()->document().page()) |
| m_synthesizedErrorsToConsole = page->settings().webGLErrorsToConsoleEnabled(); |
| |
| m_isGLES2Compliant = m_context->isGLES2Compliant(); |
| m_isErrorGeneratedOnOutOfBoundsAccesses = m_context->getExtensions()->isEnabled("GL_CHROMIUM_strict_attribs"); |
| m_isResourceSafe = m_context->getExtensions()->isEnabled("GL_CHROMIUM_resource_safe"); |
| if (m_isGLES2Compliant) { |
| m_isGLES2NPOTStrict = !m_context->getExtensions()->isEnabled("GL_OES_texture_npot"); |
| m_isDepthStencilSupported = m_context->getExtensions()->isEnabled("GL_OES_packed_depth_stencil"); |
| } else { |
| m_isGLES2NPOTStrict = !m_context->getExtensions()->isEnabled("GL_ARB_texture_non_power_of_two"); |
| m_isDepthStencilSupported = m_context->getExtensions()->isEnabled("GL_EXT_packed_depth_stencil"); |
| } |
| m_isRobustnessEXTSupported = m_context->getExtensions()->isEnabled("GL_EXT_robustness"); |
| } |
| |
| void WebGLRenderingContextBase::addCompressedTextureFormat(GC3Denum format) |
| { |
| if (!m_compressedTextureFormats.contains(format)) |
| m_compressedTextureFormats.append(format); |
| } |
| |
| WebGLRenderingContextBase::~WebGLRenderingContextBase() |
| { |
| // Remove all references to WebGLObjects so if they are the last reference |
| // they will be freed before the last context is removed from the context group. |
| m_boundArrayBuffer = nullptr; |
| m_defaultVertexArrayObject = nullptr; |
| m_boundVertexArrayObject = nullptr; |
| m_vertexAttrib0Buffer = nullptr; |
| m_currentProgram = nullptr; |
| m_framebufferBinding = nullptr; |
| m_renderbufferBinding = nullptr; |
| |
| for (auto& textureUnit : m_textureUnits) { |
| textureUnit.texture2DBinding = nullptr; |
| textureUnit.textureCubeMapBinding = nullptr; |
| } |
| |
| m_blackTexture2D = nullptr; |
| m_blackTextureCubeMap = nullptr; |
| |
| if (!m_isPendingPolicyResolution) { |
| detachAndRemoveAllObjects(); |
| destroyGraphicsContext3D(); |
| m_contextGroup->removeContext(this); |
| } |
| } |
| |
| void WebGLRenderingContextBase::destroyGraphicsContext3D() |
| { |
| if (m_isPendingPolicyResolution) |
| return; |
| |
| if (m_context) { |
| m_context->setContextLostCallback(nullptr); |
| m_context->setErrorMessageCallback(nullptr); |
| m_context = nullptr; |
| } |
| } |
| |
| void WebGLRenderingContextBase::markContextChanged() |
| { |
| if (m_framebufferBinding) |
| return; |
| |
| m_context->markContextChanged(); |
| |
| m_layerCleared = false; |
| RenderBox* renderBox = canvas()->renderBox(); |
| if (isAccelerated() && renderBox && renderBox->hasAcceleratedCompositing()) { |
| m_markedCanvasDirty = true; |
| canvas()->clearCopiedImage(); |
| renderBox->contentChanged(CanvasChanged); |
| } else { |
| if (!m_markedCanvasDirty) { |
| m_markedCanvasDirty = true; |
| canvas()->didDraw(FloatRect(FloatPoint(0, 0), clampedCanvasSize())); |
| } |
| } |
| } |
| |
| bool WebGLRenderingContextBase::clearIfComposited(GC3Dbitfield mask) |
| { |
| if (isContextLostOrPending()) |
| return false; |
| |
| if (!m_context->layerComposited() || m_layerCleared |
| || m_attributes.preserveDrawingBuffer || (mask && m_framebufferBinding)) |
| return false; |
| |
| RefPtr<WebGLContextAttributes> contextAttributes = getContextAttributes(); |
| |
| // Determine if it's possible to combine the clear the user asked for and this clear. |
| bool combinedClear = mask && !m_scissorEnabled; |
| |
| m_context->disable(GraphicsContext3D::SCISSOR_TEST); |
| if (combinedClear && (mask & GraphicsContext3D::COLOR_BUFFER_BIT)) |
| m_context->clearColor(m_colorMask[0] ? m_clearColor[0] : 0, |
| m_colorMask[1] ? m_clearColor[1] : 0, |
| m_colorMask[2] ? m_clearColor[2] : 0, |
| m_colorMask[3] ? m_clearColor[3] : 0); |
| else |
| m_context->clearColor(0, 0, 0, 0); |
| m_context->colorMask(true, true, true, true); |
| GC3Dbitfield clearMask = GraphicsContext3D::COLOR_BUFFER_BIT; |
| if (contextAttributes->depth()) { |
| if (!combinedClear || !m_depthMask || !(mask & GraphicsContext3D::DEPTH_BUFFER_BIT)) |
| m_context->clearDepth(1.0f); |
| clearMask |= GraphicsContext3D::DEPTH_BUFFER_BIT; |
| m_context->depthMask(true); |
| } |
| if (contextAttributes->stencil()) { |
| if (combinedClear && (mask & GraphicsContext3D::STENCIL_BUFFER_BIT)) |
| m_context->clearStencil(m_clearStencil & m_stencilMask); |
| else |
| m_context->clearStencil(0); |
| clearMask |= GraphicsContext3D::STENCIL_BUFFER_BIT; |
| m_context->stencilMaskSeparate(GraphicsContext3D::FRONT, 0xFFFFFFFF); |
| } |
| if (m_framebufferBinding) |
| m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, 0); |
| m_context->clear(clearMask); |
| |
| restoreStateAfterClear(); |
| if (m_framebufferBinding) |
| m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, objectOrZero(m_framebufferBinding.get())); |
| m_layerCleared = true; |
| |
| return combinedClear; |
| } |
| |
| void WebGLRenderingContextBase::restoreStateAfterClear() |
| { |
| // Restore the state that the context set. |
| if (m_scissorEnabled) |
| m_context->enable(GraphicsContext3D::SCISSOR_TEST); |
| m_context->clearColor(m_clearColor[0], m_clearColor[1], |
| m_clearColor[2], m_clearColor[3]); |
| m_context->colorMask(m_colorMask[0], m_colorMask[1], |
| m_colorMask[2], m_colorMask[3]); |
| m_context->clearDepth(m_clearDepth); |
| m_context->clearStencil(m_clearStencil); |
| m_context->stencilMaskSeparate(GraphicsContext3D::FRONT, m_stencilMask); |
| m_context->depthMask(m_depthMask); |
| } |
| |
| void WebGLRenderingContextBase::markLayerComposited() |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->markLayerComposited(); |
| } |
| |
| void WebGLRenderingContextBase::paintRenderingResultsToCanvas() |
| { |
| if (isContextLostOrPending()) |
| return; |
| |
| if (canvas()->document().printing()) |
| canvas()->clearPresentationCopy(); |
| |
| // Until the canvas is written to by the application, the clear that |
| // happened after it was composited should be ignored by the compositor. |
| if (m_context->layerComposited() && !m_attributes.preserveDrawingBuffer) { |
| m_context->paintCompositedResultsToCanvas(canvas()->buffer()); |
| |
| canvas()->makePresentationCopy(); |
| } else |
| canvas()->clearPresentationCopy(); |
| clearIfComposited(); |
| |
| if (!m_markedCanvasDirty && !m_layerCleared) |
| return; |
| |
| canvas()->clearCopiedImage(); |
| m_markedCanvasDirty = false; |
| |
| m_context->paintRenderingResultsToCanvas(canvas()->buffer()); |
| } |
| |
| PassRefPtr<ImageData> WebGLRenderingContextBase::paintRenderingResultsToImageData() |
| { |
| if (isContextLostOrPending()) |
| return nullptr; |
| clearIfComposited(); |
| return m_context->paintRenderingResultsToImageData(); |
| } |
| |
| void WebGLRenderingContextBase::reshape(int width, int height) |
| { |
| if (isContextLostOrPending()) |
| return; |
| |
| // This is an approximation because at WebGLRenderingContext level we don't |
| // know if the underlying FBO uses textures or renderbuffers. |
| GC3Dint maxSize = std::min(m_maxTextureSize, m_maxRenderbufferSize); |
| // Limit drawing buffer size to 4k to avoid memory exhaustion. |
| const int sizeUpperLimit = 4096; |
| maxSize = std::min(maxSize, sizeUpperLimit); |
| GC3Dint maxWidth = std::min(maxSize, m_maxViewportDims[0]); |
| GC3Dint maxHeight = std::min(maxSize, m_maxViewportDims[1]); |
| width = clamp(width, 1, maxWidth); |
| height = clamp(height, 1, maxHeight); |
| |
| if (m_needsUpdate) { |
| RenderBox* renderBox = canvas()->renderBox(); |
| if (renderBox && renderBox->hasAcceleratedCompositing()) |
| renderBox->contentChanged(CanvasChanged); |
| m_needsUpdate = false; |
| } |
| |
| // We don't have to mark the canvas as dirty, since the newly created image buffer will also start off |
| // clear (and this matches what reshape will do). |
| m_context->reshape(width, height); |
| |
| m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, objectOrZero(m_textureUnits[m_activeTextureUnit].texture2DBinding.get())); |
| m_context->bindRenderbuffer(GraphicsContext3D::RENDERBUFFER, objectOrZero(m_renderbufferBinding.get())); |
| if (m_framebufferBinding) |
| m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, objectOrZero(m_framebufferBinding.get())); |
| } |
| |
| int WebGLRenderingContextBase::drawingBufferWidth() const |
| { |
| if (m_isPendingPolicyResolution && !m_hasRequestedPolicyResolution) |
| return 0; |
| |
| return m_context->getInternalFramebufferSize().width(); |
| } |
| |
| int WebGLRenderingContextBase::drawingBufferHeight() const |
| { |
| if (m_isPendingPolicyResolution && !m_hasRequestedPolicyResolution) |
| return 0; |
| |
| return m_context->getInternalFramebufferSize().height(); |
| } |
| |
| unsigned WebGLRenderingContextBase::sizeInBytes(GC3Denum type) |
| { |
| switch (type) { |
| case GraphicsContext3D::BYTE: |
| return sizeof(GC3Dbyte); |
| case GraphicsContext3D::UNSIGNED_BYTE: |
| return sizeof(GC3Dubyte); |
| case GraphicsContext3D::SHORT: |
| return sizeof(GC3Dshort); |
| case GraphicsContext3D::UNSIGNED_SHORT: |
| return sizeof(GC3Dushort); |
| case GraphicsContext3D::INT: |
| return sizeof(GC3Dint); |
| case GraphicsContext3D::UNSIGNED_INT: |
| return sizeof(GC3Duint); |
| case GraphicsContext3D::FLOAT: |
| return sizeof(GC3Dfloat); |
| } |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| void WebGLRenderingContextBase::activeTexture(GC3Denum texture, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return; |
| if (texture - GraphicsContext3D::TEXTURE0 >= m_textureUnits.size()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "activeTexture", "texture unit out of range"); |
| return; |
| } |
| m_activeTextureUnit = texture - GraphicsContext3D::TEXTURE0; |
| m_context->activeTexture(texture); |
| } |
| |
| void WebGLRenderingContextBase::attachShader(WebGLProgram* program, WebGLShader* shader, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("attachShader", program) || !validateWebGLObject("attachShader", shader)) |
| return; |
| if (!program->attachShader(shader)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "attachShader", "shader attachment already has shader"); |
| return; |
| } |
| m_context->attachShader(objectOrZero(program), objectOrZero(shader)); |
| shader->onAttached(); |
| } |
| |
| void WebGLRenderingContextBase::bindAttribLocation(WebGLProgram* program, GC3Duint index, const String& name, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("bindAttribLocation", program)) |
| return; |
| if (!validateLocationLength("bindAttribLocation", name)) |
| return; |
| if (!validateString("bindAttribLocation", name)) |
| return; |
| if (isPrefixReserved(name)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "bindAttribLocation", "reserved prefix"); |
| return; |
| } |
| if (index >= m_maxVertexAttribs) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bindAttribLocation", "index out of range"); |
| return; |
| } |
| m_context->bindAttribLocation(objectOrZero(program), index, name); |
| } |
| |
| bool WebGLRenderingContextBase::checkObjectToBeBound(const char* functionName, WebGLObject* object, bool& deleted) |
| { |
| deleted = false; |
| if (isContextLostOrPending()) |
| return false; |
| if (object) { |
| if (!object->validate(contextGroup(), this)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "object not from this context"); |
| return false; |
| } |
| deleted = !object->object(); |
| } |
| return true; |
| } |
| |
| void WebGLRenderingContextBase::bindBuffer(GC3Denum target, WebGLBuffer* buffer, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| bool deleted; |
| if (!checkObjectToBeBound("bindBuffer", buffer, deleted)) |
| return; |
| if (deleted) |
| buffer = 0; |
| if (buffer && buffer->getTarget() && buffer->getTarget() != target) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "bindBuffer", "buffers can not be used with multiple targets"); |
| return; |
| } |
| if (target == GraphicsContext3D::ARRAY_BUFFER) |
| m_boundArrayBuffer = buffer; |
| else if (target == GraphicsContext3D::ELEMENT_ARRAY_BUFFER) |
| m_boundVertexArrayObject->setElementArrayBuffer(buffer); |
| else { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "bindBuffer", "invalid target"); |
| return; |
| } |
| |
| m_context->bindBuffer(target, objectOrZero(buffer)); |
| if (buffer) |
| buffer->setTarget(target); |
| } |
| |
| void WebGLRenderingContextBase::bindFramebuffer(GC3Denum target, WebGLFramebuffer* buffer, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| bool deleted; |
| if (!checkObjectToBeBound("bindFramebuffer", buffer, deleted)) |
| return; |
| if (deleted) |
| buffer = 0; |
| if (target != GraphicsContext3D::FRAMEBUFFER) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "bindFramebuffer", "invalid target"); |
| return; |
| } |
| m_framebufferBinding = buffer; |
| m_context->bindFramebuffer(target, objectOrZero(buffer)); |
| if (buffer) |
| buffer->setHasEverBeenBound(); |
| applyStencilTest(); |
| } |
| |
| void WebGLRenderingContextBase::bindRenderbuffer(GC3Denum target, WebGLRenderbuffer* renderBuffer, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| bool deleted; |
| if (!checkObjectToBeBound("bindRenderbuffer", renderBuffer, deleted)) |
| return; |
| if (deleted) |
| renderBuffer = 0; |
| if (target != GraphicsContext3D::RENDERBUFFER) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "bindRenderbuffer", "invalid target"); |
| return; |
| } |
| m_renderbufferBinding = renderBuffer; |
| m_context->bindRenderbuffer(target, objectOrZero(renderBuffer)); |
| if (renderBuffer) |
| renderBuffer->setHasEverBeenBound(); |
| } |
| |
| void WebGLRenderingContextBase::bindTexture(GC3Denum target, WebGLTexture* texture, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| bool deleted; |
| if (!checkObjectToBeBound("bindTexture", texture, deleted)) |
| return; |
| if (deleted) |
| texture = 0; |
| if (texture && texture->getTarget() && texture->getTarget() != target) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "bindTexture", "textures can not be used with multiple targets"); |
| return; |
| } |
| GC3Dint maxLevel = 0; |
| if (target == GraphicsContext3D::TEXTURE_2D) { |
| m_textureUnits[m_activeTextureUnit].texture2DBinding = texture; |
| maxLevel = m_maxTextureLevel; |
| } else if (target == GraphicsContext3D::TEXTURE_CUBE_MAP) { |
| m_textureUnits[m_activeTextureUnit].textureCubeMapBinding = texture; |
| maxLevel = m_maxCubeMapTextureLevel; |
| } else { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "bindTexture", "invalid target"); |
| return; |
| } |
| m_context->bindTexture(target, objectOrZero(texture)); |
| if (texture) |
| texture->setTarget(target, maxLevel); |
| |
| // Note: previously we used to automatically set the TEXTURE_WRAP_R |
| // repeat mode to CLAMP_TO_EDGE for cube map textures, because OpenGL |
| // ES 2.0 doesn't expose this flag (a bug in the specification) and |
| // otherwise the application has no control over the seams in this |
| // dimension. However, it appears that supporting this properly on all |
| // platforms is fairly involved (will require a HashMap from texture ID |
| // in all ports), and we have not had any complaints, so the logic has |
| // been removed. |
| } |
| |
| void WebGLRenderingContextBase::blendColor(GC3Dfloat red, GC3Dfloat green, GC3Dfloat blue, GC3Dfloat alpha) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->blendColor(red, green, blue, alpha); |
| } |
| |
| void WebGLRenderingContextBase::blendEquation(GC3Denum mode) |
| { |
| if (isContextLostOrPending() || !validateBlendEquation("blendEquation", mode)) |
| return; |
| m_context->blendEquation(mode); |
| } |
| |
| void WebGLRenderingContextBase::blendEquationSeparate(GC3Denum modeRGB, GC3Denum modeAlpha) |
| { |
| if (isContextLostOrPending() || !validateBlendEquation("blendEquation", modeRGB) || !validateBlendEquation("blendEquation", modeAlpha)) |
| return; |
| m_context->blendEquationSeparate(modeRGB, modeAlpha); |
| } |
| |
| |
| void WebGLRenderingContextBase::blendFunc(GC3Denum sfactor, GC3Denum dfactor) |
| { |
| if (isContextLostOrPending() || !validateBlendFuncFactors("blendFunc", sfactor, dfactor)) |
| return; |
| m_context->blendFunc(sfactor, dfactor); |
| } |
| |
| void WebGLRenderingContextBase::blendFuncSeparate(GC3Denum srcRGB, GC3Denum dstRGB, GC3Denum srcAlpha, GC3Denum dstAlpha) |
| { |
| // Note: Alpha does not have the same restrictions as RGB. |
| if (isContextLostOrPending() || !validateBlendFuncFactors("blendFunc", srcRGB, dstRGB)) |
| return; |
| m_context->blendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha); |
| } |
| |
| void WebGLRenderingContextBase::bufferData(GC3Denum target, long long size, GC3Denum usage, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return; |
| WebGLBuffer* buffer = validateBufferDataParameters("bufferData", target, usage); |
| if (!buffer) |
| return; |
| if (size < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferData", "size < 0"); |
| return; |
| } |
| if (!size) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferData", "size == 0"); |
| return; |
| } |
| if (!isErrorGeneratedOnOutOfBoundsAccesses()) { |
| if (!buffer->associateBufferData(static_cast<GC3Dsizeiptr>(size))) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferData", "invalid buffer"); |
| return; |
| } |
| } |
| |
| m_context->moveErrorsToSyntheticErrorList(); |
| m_context->bufferData(target, static_cast<GC3Dsizeiptr>(size), usage); |
| if (m_context->moveErrorsToSyntheticErrorList()) { |
| // The bufferData function failed. Tell the buffer it doesn't have the data it thinks it does. |
| buffer->disassociateBufferData(); |
| } |
| } |
| |
| void WebGLRenderingContextBase::bufferData(GC3Denum target, ArrayBuffer* data, GC3Denum usage, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return; |
| WebGLBuffer* buffer = validateBufferDataParameters("bufferData", target, usage); |
| if (!buffer) |
| return; |
| if (!data) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferData", "no data"); |
| return; |
| } |
| if (!isErrorGeneratedOnOutOfBoundsAccesses()) { |
| if (!buffer->associateBufferData(data)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferData", "invalid buffer"); |
| return; |
| } |
| } |
| |
| m_context->moveErrorsToSyntheticErrorList(); |
| m_context->bufferData(target, data->byteLength(), data->data(), usage); |
| if (m_context->moveErrorsToSyntheticErrorList()) { |
| // The bufferData function failed. Tell the buffer it doesn't have the data it thinks it does. |
| buffer->disassociateBufferData(); |
| } |
| } |
| |
| void WebGLRenderingContextBase::bufferData(GC3Denum target, ArrayBufferView* data, GC3Denum usage, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return; |
| WebGLBuffer* buffer = validateBufferDataParameters("bufferData", target, usage); |
| if (!buffer) |
| return; |
| if (!data) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferData", "no data"); |
| return; |
| } |
| if (!isErrorGeneratedOnOutOfBoundsAccesses()) { |
| if (!buffer->associateBufferData(data)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferData", "invalid buffer"); |
| return; |
| } |
| } |
| |
| m_context->moveErrorsToSyntheticErrorList(); |
| m_context->bufferData(target, data->byteLength(), data->baseAddress(), usage); |
| if (m_context->moveErrorsToSyntheticErrorList()) { |
| // The bufferData function failed. Tell the buffer it doesn't have the data it thinks it does. |
| buffer->disassociateBufferData(); |
| } |
| } |
| |
| void WebGLRenderingContextBase::bufferSubData(GC3Denum target, long long offset, ArrayBuffer* data, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return; |
| WebGLBuffer* buffer = validateBufferDataParameters("bufferSubData", target, GraphicsContext3D::STATIC_DRAW); |
| if (!buffer) |
| return; |
| if (offset < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferSubData", "offset < 0"); |
| return; |
| } |
| if (!data) |
| return; |
| if (!isErrorGeneratedOnOutOfBoundsAccesses()) { |
| if (!buffer->associateBufferSubData(static_cast<GC3Dintptr>(offset), data)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferSubData", "offset out of range"); |
| return; |
| } |
| } |
| |
| m_context->moveErrorsToSyntheticErrorList(); |
| m_context->bufferSubData(target, static_cast<GC3Dintptr>(offset), data->byteLength(), data->data()); |
| if (m_context->moveErrorsToSyntheticErrorList()) { |
| // The bufferSubData function failed. Tell the buffer it doesn't have the data it thinks it does. |
| buffer->disassociateBufferData(); |
| } |
| } |
| |
| void WebGLRenderingContextBase::bufferSubData(GC3Denum target, long long offset, ArrayBufferView* data, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return; |
| WebGLBuffer* buffer = validateBufferDataParameters("bufferSubData", target, GraphicsContext3D::STATIC_DRAW); |
| if (!buffer) |
| return; |
| if (offset < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferSubData", "offset < 0"); |
| return; |
| } |
| if (!data) |
| return; |
| if (!isErrorGeneratedOnOutOfBoundsAccesses()) { |
| if (!buffer->associateBufferSubData(static_cast<GC3Dintptr>(offset), data)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "bufferSubData", "offset out of range"); |
| return; |
| } |
| } |
| |
| m_context->moveErrorsToSyntheticErrorList(); |
| m_context->bufferSubData(target, static_cast<GC3Dintptr>(offset), data->byteLength(), data->baseAddress()); |
| if (m_context->moveErrorsToSyntheticErrorList()) { |
| // The bufferSubData function failed. Tell the buffer it doesn't have the data it thinks it does. |
| buffer->disassociateBufferData(); |
| } |
| } |
| |
| GC3Denum WebGLRenderingContextBase::checkFramebufferStatus(GC3Denum target) |
| { |
| if (isContextLostOrPending()) |
| return GraphicsContext3D::FRAMEBUFFER_UNSUPPORTED; |
| if (target != GraphicsContext3D::FRAMEBUFFER) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "checkFramebufferStatus", "invalid target"); |
| return 0; |
| } |
| if (!m_framebufferBinding || !m_framebufferBinding->object()) |
| return GraphicsContext3D::FRAMEBUFFER_COMPLETE; |
| const char* reason = "framebuffer incomplete"; |
| GC3Denum result = m_framebufferBinding->checkStatus(&reason); |
| if (result != GraphicsContext3D::FRAMEBUFFER_COMPLETE) { |
| printGLWarningToConsole("checkFramebufferStatus", reason); |
| return result; |
| } |
| result = m_context->checkFramebufferStatus(target); |
| return result; |
| } |
| |
| void WebGLRenderingContextBase::clearColor(GC3Dfloat r, GC3Dfloat g, GC3Dfloat b, GC3Dfloat a) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (std::isnan(r)) |
| r = 0; |
| if (std::isnan(g)) |
| g = 0; |
| if (std::isnan(b)) |
| b = 0; |
| if (std::isnan(a)) |
| a = 1; |
| m_clearColor[0] = r; |
| m_clearColor[1] = g; |
| m_clearColor[2] = b; |
| m_clearColor[3] = a; |
| m_context->clearColor(r, g, b, a); |
| } |
| |
| void WebGLRenderingContextBase::clearDepth(GC3Dfloat depth) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_clearDepth = depth; |
| m_context->clearDepth(depth); |
| } |
| |
| void WebGLRenderingContextBase::clearStencil(GC3Dint s) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_clearStencil = s; |
| m_context->clearStencil(s); |
| } |
| |
| void WebGLRenderingContextBase::colorMask(GC3Dboolean red, GC3Dboolean green, GC3Dboolean blue, GC3Dboolean alpha) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_colorMask[0] = red; |
| m_colorMask[1] = green; |
| m_colorMask[2] = blue; |
| m_colorMask[3] = alpha; |
| m_context->colorMask(red, green, blue, alpha); |
| } |
| |
| void WebGLRenderingContextBase::compileShader(WebGLShader* shader, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("compileShader", shader)) |
| return; |
| m_context->compileShader(objectOrZero(shader)); |
| GC3Dint value; |
| m_context->getShaderiv(objectOrZero(shader), GraphicsContext3D::COMPILE_STATUS, &value); |
| shader->setValid(value); |
| } |
| |
| void WebGLRenderingContextBase::compressedTexImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, |
| GC3Dsizei height, GC3Dint border, ArrayBufferView* data) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (!validateTexFuncLevel("compressedTexImage2D", target, level)) |
| return; |
| |
| if (!validateCompressedTexFormat(internalformat)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "compressedTexImage2D", "invalid internalformat"); |
| return; |
| } |
| if (border) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "compressedTexImage2D", "border not 0"); |
| return; |
| } |
| if (!validateCompressedTexDimensions("compressedTexImage2D", target, level, width, height, internalformat)) |
| return; |
| if (!validateCompressedTexFuncData("compressedTexImage2D", width, height, internalformat, data)) |
| return; |
| |
| WebGLTexture* tex = validateTextureBinding("compressedTexImage2D", target, true); |
| if (!tex) |
| return; |
| if (!isGLES2NPOTStrict()) { |
| if (level && WebGLTexture::isNPOT(width, height)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "compressedTexImage2D", "level > 0 not power of 2"); |
| return; |
| } |
| } |
| m_context->moveErrorsToSyntheticErrorList(); |
| m_context->compressedTexImage2D(target, level, internalformat, width, height, |
| border, data->byteLength(), data->baseAddress()); |
| if (m_context->moveErrorsToSyntheticErrorList()) { |
| // The compressedTexImage2D function failed. Tell the WebGLTexture it doesn't have the data for this level. |
| tex->markInvalid(target, level); |
| return; |
| } |
| |
| tex->setLevelInfo(target, level, internalformat, width, height, GraphicsContext3D::UNSIGNED_BYTE); |
| tex->setCompressed(); |
| } |
| |
| void WebGLRenderingContextBase::compressedTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| GC3Dsizei width, GC3Dsizei height, GC3Denum format, ArrayBufferView* data) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (!validateTexFuncLevel("compressedTexSubImage2D", target, level)) |
| return; |
| if (!validateCompressedTexFormat(format)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "compressedTexSubImage2D", "invalid format"); |
| return; |
| } |
| if (!validateCompressedTexFuncData("compressedTexSubImage2D", width, height, format, data)) |
| return; |
| |
| WebGLTexture* tex = validateTextureBinding("compressedTexSubImage2D", target, true); |
| if (!tex) |
| return; |
| |
| if (format != tex->getInternalFormat(target, level)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "compressedTexSubImage2D", "format does not match texture format"); |
| return; |
| } |
| |
| if (!validateCompressedTexSubDimensions("compressedTexSubImage2D", target, level, xoffset, yoffset, width, height, format, tex)) |
| return; |
| |
| graphicsContext3D()->compressedTexSubImage2D(target, level, xoffset, yoffset, |
| width, height, format, data->byteLength(), data->baseAddress()); |
| tex->setCompressed(); |
| } |
| |
| bool WebGLRenderingContextBase::validateSettableTexFormat(const char* functionName, GC3Denum format) |
| { |
| if (GraphicsContext3D::getClearBitsByFormat(format) & (GraphicsContext3D::DEPTH_BUFFER_BIT | GraphicsContext3D::STENCIL_BUFFER_BIT)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "format can not be set, only rendered to"); |
| return false; |
| } |
| return true; |
| } |
| |
| void WebGLRenderingContextBase::copyTexSubImage2D(GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (!validateTexFuncLevel("copyTexSubImage2D", target, level)) |
| return; |
| WebGLTexture* tex = validateTextureBinding("copyTexSubImage2D", target, true); |
| if (!tex) |
| return; |
| if (!validateSize("copyTexSubImage2D", xoffset, yoffset) || !validateSize("copyTexSubImage2D", width, height)) |
| return; |
| // Before checking if it is in the range, check if overflow happens first. |
| if (xoffset + width < 0 || yoffset + height < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "copyTexSubImage2D", "bad dimensions"); |
| return; |
| } |
| if (xoffset + width > tex->getWidth(target, level) || yoffset + height > tex->getHeight(target, level)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "copyTexSubImage2D", "rectangle out of range"); |
| return; |
| } |
| GC3Denum internalformat = tex->getInternalFormat(target, level); |
| if (!validateSettableTexFormat("copyTexSubImage2D", internalformat)) |
| return; |
| if (!isTexInternalFormatColorBufferCombinationValid(internalformat, getBoundFramebufferColorFormat())) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "copyTexSubImage2D", "framebuffer is incompatible format"); |
| return; |
| } |
| const char* reason = "framebuffer incomplete"; |
| if (m_framebufferBinding && !m_framebufferBinding->onAccess(graphicsContext3D(), !isResourceSafe(), &reason)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION, "copyTexSubImage2D", reason); |
| return; |
| } |
| clearIfComposited(); |
| if (isResourceSafe()) |
| m_context->copyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height); |
| else { |
| GC3Dint clippedX, clippedY; |
| GC3Dsizei clippedWidth, clippedHeight; |
| if (clip2D(x, y, width, height, getBoundFramebufferWidth(), getBoundFramebufferHeight(), &clippedX, &clippedY, &clippedWidth, &clippedHeight)) { |
| GC3Denum format = tex->getInternalFormat(target, level); |
| GC3Denum type = tex->getType(target, level); |
| std::unique_ptr<unsigned char[]> zero; |
| if (width && height) { |
| unsigned int size; |
| GC3Denum error = m_context->computeImageSizeInBytes(format, type, width, height, m_unpackAlignment, &size, 0); |
| if (error != GraphicsContext3D::NO_ERROR) { |
| synthesizeGLError(error, "copyTexSubImage2D", "bad dimensions"); |
| return; |
| } |
| zero = std::make_unique<unsigned char[]>(size); |
| if (!zero) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "copyTexSubImage2D", "out of memory"); |
| return; |
| } |
| memset(zero.get(), 0, size); |
| } |
| m_context->texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, zero.get()); |
| if (clippedWidth > 0 && clippedHeight > 0) |
| m_context->copyTexSubImage2D(target, level, xoffset + clippedX - x, yoffset + clippedY - y, |
| clippedX, clippedY, clippedWidth, clippedHeight); |
| } else |
| m_context->copyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height); |
| } |
| } |
| |
| PassRefPtr<WebGLBuffer> WebGLRenderingContextBase::createBuffer() |
| { |
| if (isContextLostOrPending()) |
| return nullptr; |
| RefPtr<WebGLBuffer> o = WebGLBuffer::create(this); |
| addSharedObject(o.get()); |
| return o; |
| } |
| |
| PassRefPtr<WebGLFramebuffer> WebGLRenderingContextBase::createFramebuffer() |
| { |
| if (isContextLostOrPending()) |
| return nullptr; |
| RefPtr<WebGLFramebuffer> o = WebGLFramebuffer::create(this); |
| addContextObject(o.get()); |
| return o; |
| } |
| |
| PassRefPtr<WebGLTexture> WebGLRenderingContextBase::createTexture() |
| { |
| if (isContextLostOrPending()) |
| return nullptr; |
| RefPtr<WebGLTexture> o = WebGLTexture::create(this); |
| addSharedObject(o.get()); |
| return o; |
| } |
| |
| PassRefPtr<WebGLProgram> WebGLRenderingContextBase::createProgram() |
| { |
| if (isContextLostOrPending()) |
| return nullptr; |
| RefPtr<WebGLProgram> o = WebGLProgram::create(this); |
| addSharedObject(o.get()); |
| return o; |
| } |
| |
| PassRefPtr<WebGLRenderbuffer> WebGLRenderingContextBase::createRenderbuffer() |
| { |
| if (isContextLostOrPending()) |
| return nullptr; |
| RefPtr<WebGLRenderbuffer> o = WebGLRenderbuffer::create(this); |
| addSharedObject(o.get()); |
| return o; |
| } |
| |
| PassRefPtr<WebGLShader> WebGLRenderingContextBase::createShader(GC3Denum type, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return nullptr; |
| if (type != GraphicsContext3D::VERTEX_SHADER && type != GraphicsContext3D::FRAGMENT_SHADER) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "createShader", "invalid shader type"); |
| return nullptr; |
| } |
| |
| RefPtr<WebGLShader> o = WebGLShader::create(this, type); |
| addSharedObject(o.get()); |
| return o; |
| } |
| |
| void WebGLRenderingContextBase::cullFace(GC3Denum mode) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->cullFace(mode); |
| } |
| |
| bool WebGLRenderingContextBase::deleteObject(WebGLObject* object) |
| { |
| if (isContextLostOrPending() || !object) |
| return false; |
| if (!object->validate(contextGroup(), this)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "delete", "object does not belong to this context"); |
| return false; |
| } |
| if (object->object()) |
| // We need to pass in context here because we want |
| // things in this context unbound. |
| object->deleteObject(graphicsContext3D()); |
| return true; |
| } |
| |
| void WebGLRenderingContextBase::deleteBuffer(WebGLBuffer* buffer) |
| { |
| if (!deleteObject(buffer)) |
| return; |
| if (m_boundArrayBuffer == buffer) |
| m_boundArrayBuffer = nullptr; |
| |
| m_boundVertexArrayObject->unbindBuffer(buffer); |
| } |
| |
| void WebGLRenderingContextBase::deleteFramebuffer(WebGLFramebuffer* framebuffer) |
| { |
| if (!deleteObject(framebuffer)) |
| return; |
| if (framebuffer == m_framebufferBinding) { |
| m_framebufferBinding = nullptr; |
| m_context->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, 0); |
| } |
| } |
| |
| void WebGLRenderingContextBase::deleteProgram(WebGLProgram* program) |
| { |
| deleteObject(program); |
| // We don't reset m_currentProgram to 0 here because the deletion of the |
| // current program is delayed. |
| } |
| |
| void WebGLRenderingContextBase::deleteRenderbuffer(WebGLRenderbuffer* renderbuffer) |
| { |
| if (!deleteObject(renderbuffer)) |
| return; |
| if (renderbuffer == m_renderbufferBinding) |
| m_renderbufferBinding = nullptr; |
| if (m_framebufferBinding) |
| m_framebufferBinding->removeAttachmentFromBoundFramebuffer(renderbuffer); |
| } |
| |
| void WebGLRenderingContextBase::deleteShader(WebGLShader* shader) |
| { |
| deleteObject(shader); |
| } |
| |
| void WebGLRenderingContextBase::deleteTexture(WebGLTexture* texture) |
| { |
| if (!deleteObject(texture)) |
| return; |
| for (auto& textureUnit : m_textureUnits) { |
| if (texture == textureUnit.texture2DBinding) |
| textureUnit.texture2DBinding = nullptr; |
| if (texture == textureUnit.textureCubeMapBinding) |
| textureUnit.textureCubeMapBinding = nullptr; |
| } |
| if (m_framebufferBinding) |
| m_framebufferBinding->removeAttachmentFromBoundFramebuffer(texture); |
| } |
| |
| void WebGLRenderingContextBase::depthFunc(GC3Denum func) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->depthFunc(func); |
| } |
| |
| void WebGLRenderingContextBase::depthMask(GC3Dboolean flag) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_depthMask = flag; |
| m_context->depthMask(flag); |
| } |
| |
| void WebGLRenderingContextBase::depthRange(GC3Dfloat zNear, GC3Dfloat zFar) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (zNear > zFar) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "depthRange", "zNear > zFar"); |
| return; |
| } |
| m_context->depthRange(zNear, zFar); |
| } |
| |
| void WebGLRenderingContextBase::detachShader(WebGLProgram* program, WebGLShader* shader, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("detachShader", program) || !validateWebGLObject("detachShader", shader)) |
| return; |
| if (!program->detachShader(shader)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "detachShader", "shader not attached"); |
| return; |
| } |
| m_context->detachShader(objectOrZero(program), objectOrZero(shader)); |
| shader->onDetached(graphicsContext3D()); |
| } |
| |
| void WebGLRenderingContextBase::disable(GC3Denum cap) |
| { |
| if (isContextLostOrPending() || !validateCapability("disable", cap)) |
| return; |
| if (cap == GraphicsContext3D::STENCIL_TEST) { |
| m_stencilEnabled = false; |
| applyStencilTest(); |
| return; |
| } |
| if (cap == GraphicsContext3D::SCISSOR_TEST) |
| m_scissorEnabled = false; |
| m_context->disable(cap); |
| } |
| |
| void WebGLRenderingContextBase::disableVertexAttribArray(GC3Duint index, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return; |
| if (index >= m_maxVertexAttribs) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "disableVertexAttribArray", "index out of range"); |
| return; |
| } |
| |
| WebGLVertexArrayObjectBase::VertexAttribState& state = m_boundVertexArrayObject->getVertexAttribState(index); |
| state.enabled = false; |
| |
| if (index > 0 || isGLES2Compliant()) |
| m_context->disableVertexAttribArray(index); |
| } |
| |
| bool WebGLRenderingContextBase::validateElementArraySize(GC3Dsizei count, GC3Denum type, GC3Dintptr offset) |
| { |
| RefPtr<WebGLBuffer> elementArrayBuffer = m_boundVertexArrayObject->getElementArrayBuffer(); |
| |
| if (!elementArrayBuffer) |
| return false; |
| |
| if (offset < 0) |
| return false; |
| |
| if (type == GraphicsContext3D::UNSIGNED_INT) { |
| // For an unsigned int array, offset must be divisible by 4 for alignment reasons. |
| if (offset % 4) |
| return false; |
| |
| // Make uoffset an element offset. |
| offset /= 4; |
| |
| GC3Dsizeiptr n = elementArrayBuffer->byteLength() / 4; |
| if (offset > n || count > n - offset) |
| return false; |
| } else if (type == GraphicsContext3D::UNSIGNED_SHORT) { |
| // For an unsigned short array, offset must be divisible by 2 for alignment reasons. |
| if (offset % 2) |
| return false; |
| |
| // Make uoffset an element offset. |
| offset /= 2; |
| |
| GC3Dsizeiptr n = elementArrayBuffer->byteLength() / 2; |
| if (offset > n || count > n - offset) |
| return false; |
| } else if (type == GraphicsContext3D::UNSIGNED_BYTE) { |
| GC3Dsizeiptr n = elementArrayBuffer->byteLength(); |
| if (offset > n || count > n - offset) |
| return false; |
| } |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateIndexArrayPrecise(GC3Dsizei count, GC3Denum type, GC3Dintptr offset, unsigned& numElementsRequired) |
| { |
| ASSERT(count >= 0 && offset >= 0); |
| unsigned lastIndex = 0; |
| |
| RefPtr<WebGLBuffer> elementArrayBuffer = m_boundVertexArrayObject->getElementArrayBuffer(); |
| |
| if (!elementArrayBuffer) |
| return false; |
| |
| if (!count) { |
| numElementsRequired = 0; |
| return true; |
| } |
| |
| if (!elementArrayBuffer->elementArrayBuffer()) |
| return false; |
| |
| unsigned long uoffset = offset; |
| unsigned long n = count; |
| |
| if (type == GraphicsContext3D::UNSIGNED_INT) { |
| // Make uoffset an element offset. |
| uoffset /= sizeof(GC3Duint); |
| const GC3Duint* p = static_cast<const GC3Duint*>(elementArrayBuffer->elementArrayBuffer()->data()) + uoffset; |
| while (n-- > 0) { |
| if (*p > lastIndex) |
| lastIndex = *p; |
| ++p; |
| } |
| } else if (type == GraphicsContext3D::UNSIGNED_SHORT) { |
| // Make uoffset an element offset. |
| uoffset /= sizeof(GC3Dushort); |
| const GC3Dushort* p = static_cast<const GC3Dushort*>(elementArrayBuffer->elementArrayBuffer()->data()) + uoffset; |
| while (n-- > 0) { |
| if (*p > lastIndex) |
| lastIndex = *p; |
| ++p; |
| } |
| } else if (type == GraphicsContext3D::UNSIGNED_BYTE) { |
| const GC3Dubyte* p = static_cast<const GC3Dubyte*>(elementArrayBuffer->elementArrayBuffer()->data()) + uoffset; |
| while (n-- > 0) { |
| if (*p > lastIndex) |
| lastIndex = *p; |
| ++p; |
| } |
| } |
| |
| // Then set the last index in the index array and make sure it is valid. |
| numElementsRequired = lastIndex + 1; |
| return numElementsRequired > 0; |
| } |
| |
| bool WebGLRenderingContextBase::validateVertexAttributes(unsigned elementCount, unsigned primitiveCount) |
| { |
| if (!m_currentProgram) |
| return false; |
| |
| // Look in each enabled vertex attrib and check if they've been bound to a buffer. |
| for (unsigned i = 0; i < m_maxVertexAttribs; ++i) { |
| if (!m_boundVertexArrayObject->getVertexAttribState(i).validateBinding()) |
| return false; |
| } |
| |
| if (elementCount <= 0) |
| return true; |
| |
| // Look in each consumed vertex attrib (by the current program). |
| bool sawNonInstancedAttrib = false; |
| bool sawEnabledAttrib = false; |
| int numActiveAttribLocations = m_currentProgram->numActiveAttribLocations(); |
| for (int i = 0; i < numActiveAttribLocations; ++i) { |
| int loc = m_currentProgram->getActiveAttribLocation(i); |
| if (loc >= 0 && loc < static_cast<int>(m_maxVertexAttribs)) { |
| const WebGLVertexArrayObjectBase::VertexAttribState& state = m_boundVertexArrayObject->getVertexAttribState(loc); |
| if (state.enabled) { |
| sawEnabledAttrib = true; |
| // Avoid off-by-one errors in numElements computation. |
| // For the last element, we will only touch the data for the |
| // element and nothing beyond it. |
| int bytesRemaining = static_cast<int>(state.bufferBinding->byteLength() - state.offset); |
| unsigned numElements = 0; |
| ASSERT(state.stride > 0); |
| if (bytesRemaining >= state.bytesPerElement) |
| numElements = 1 + (bytesRemaining - state.bytesPerElement) / state.stride; |
| unsigned instancesRequired = 0; |
| if (state.divisor) { |
| instancesRequired = ceil(static_cast<float>(primitiveCount) / state.divisor); |
| if (instancesRequired > numElements) |
| return false; |
| } else { |
| sawNonInstancedAttrib = true; |
| if (elementCount > numElements) |
| return false; |
| } |
| } |
| } |
| } |
| |
| if (!sawNonInstancedAttrib && sawEnabledAttrib) |
| return false; |
| |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateWebGLObject(const char* functionName, WebGLObject* object) |
| { |
| if (!object || !object->object()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no object or object deleted"); |
| return false; |
| } |
| if (!object->validate(contextGroup(), this)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "object does not belong to this context"); |
| return false; |
| } |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateDrawArrays(const char* functionName, GC3Denum mode, GC3Dint first, GC3Dsizei count, GC3Dsizei primitiveCount) |
| { |
| if (isContextLostOrPending() || !validateDrawMode(functionName, mode)) |
| return false; |
| |
| if (!validateStencilSettings(functionName)) |
| return false; |
| |
| if (first < 0 || count < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "first or count < 0"); |
| return false; |
| } |
| |
| if (!count) { |
| markContextChanged(); |
| return false; |
| } |
| |
| if (primitiveCount < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "primcount < 0"); |
| return false; |
| } |
| |
| if (!isErrorGeneratedOnOutOfBoundsAccesses()) { |
| // Ensure we have a valid rendering state |
| Checked<GC3Dint, RecordOverflow> checkedFirst(first); |
| Checked<GC3Dint, RecordOverflow> checkedCount(count); |
| Checked<GC3Dint, RecordOverflow> checkedSum = checkedFirst + checkedCount; |
| Checked<GC3Dint, RecordOverflow> checkedPrimitiveCount(primitiveCount); |
| if (checkedSum.hasOverflowed() || checkedPrimitiveCount.hasOverflowed() || !validateVertexAttributes(checkedSum.unsafeGet(), checkedPrimitiveCount.unsafeGet())) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "attempt to access out of bounds arrays"); |
| return false; |
| } |
| if (!validateSimulatedVertexAttrib0(checkedSum.unsafeGet() - 1)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "attempt to access outside the bounds of the simulated vertexAttrib0 array"); |
| return false; |
| } |
| } else { |
| if (!validateVertexAttributes(0)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "attribs not setup correctly"); |
| return false; |
| } |
| } |
| |
| const char* reason = "framebuffer incomplete"; |
| if (m_framebufferBinding && !m_framebufferBinding->onAccess(graphicsContext3D(), !isResourceSafe(), &reason)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION, functionName, reason); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateDrawElements(const char* functionName, GC3Denum mode, GC3Dsizei count, GC3Denum type, long long offset, unsigned& numElements, GC3Dsizei primitiveCount) |
| { |
| if (isContextLostOrPending() || !validateDrawMode(functionName, mode)) |
| return false; |
| |
| if (!validateStencilSettings(functionName)) |
| return false; |
| |
| switch (type) { |
| case GraphicsContext3D::UNSIGNED_BYTE: |
| case GraphicsContext3D::UNSIGNED_SHORT: |
| break; |
| case GraphicsContext3D::UNSIGNED_INT: |
| if (m_oesElementIndexUint || isWebGL2()) |
| break; |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid type"); |
| return false; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid type"); |
| return false; |
| } |
| |
| if (count < 0 || offset < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "count or offset < 0"); |
| return false; |
| } |
| |
| if (!count) { |
| markContextChanged(); |
| return false; |
| } |
| |
| if (primitiveCount < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "primcount < 0"); |
| return false; |
| } |
| |
| if (!m_boundVertexArrayObject->getElementArrayBuffer()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "no ELEMENT_ARRAY_BUFFER bound"); |
| return false; |
| } |
| |
| if (!isErrorGeneratedOnOutOfBoundsAccesses()) { |
| // Ensure we have a valid rendering state |
| if (!validateElementArraySize(count, type, static_cast<GC3Dintptr>(offset))) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "request out of bounds for current ELEMENT_ARRAY_BUFFER"); |
| return false; |
| } |
| if (!count) |
| return false; |
| |
| Checked<GC3Dint, RecordOverflow> checkedCount(count); |
| Checked<GC3Dint, RecordOverflow> checkedPrimitiveCount(primitiveCount); |
| if (checkedCount.hasOverflowed() || checkedPrimitiveCount.hasOverflowed()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "attempt to access out of bounds arrays"); |
| return false; |
| } |
| |
| if (!validateIndexArrayConservative(type, numElements) || !validateVertexAttributes(numElements, checkedPrimitiveCount.unsafeGet())) { |
| if (!validateIndexArrayPrecise(checkedCount.unsafeGet(), type, static_cast<GC3Dintptr>(offset), numElements) || !validateVertexAttributes(numElements, checkedPrimitiveCount.unsafeGet())) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "attempt to access out of bounds arrays"); |
| return false; |
| } |
| } |
| |
| if (!validateSimulatedVertexAttrib0(numElements)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "attempt to access outside the bounds of the simulated vertexAttrib0 array"); |
| return false; |
| } |
| |
| } else { |
| if (!validateVertexAttributes(0)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "attribs not setup correctly"); |
| return false; |
| } |
| } |
| |
| const char* reason = "framebuffer incomplete"; |
| if (m_framebufferBinding && !m_framebufferBinding->onAccess(graphicsContext3D(), !isResourceSafe(), &reason)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION, functionName, reason); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void WebGLRenderingContextBase::drawArrays(GC3Denum mode, GC3Dint first, GC3Dsizei count, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| |
| if (!validateDrawArrays("drawArrays", mode, first, count, 0)) |
| return; |
| |
| clearIfComposited(); |
| |
| bool vertexAttrib0Simulated = false; |
| if (!isGLES2Compliant()) |
| vertexAttrib0Simulated = simulateVertexAttrib0(first + count - 1); |
| if (!isGLES2NPOTStrict()) |
| checkTextureCompleteness("drawArrays", true); |
| |
| m_context->drawArrays(mode, first, count); |
| |
| if (!isGLES2Compliant() && vertexAttrib0Simulated) |
| restoreStatesAfterVertexAttrib0Simulation(); |
| if (!isGLES2NPOTStrict()) |
| checkTextureCompleteness("drawArrays", false); |
| markContextChanged(); |
| } |
| |
| void WebGLRenderingContextBase::drawElements(GC3Denum mode, GC3Dsizei count, GC3Denum type, long long offset, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| |
| unsigned numElements = 0; |
| if (!validateDrawElements("drawElements", mode, count, type, offset, numElements, 0)) |
| return; |
| |
| clearIfComposited(); |
| |
| bool vertexAttrib0Simulated = false; |
| if (!isGLES2Compliant()) { |
| if (!numElements) |
| validateIndexArrayPrecise(count, type, static_cast<GC3Dintptr>(offset), numElements); |
| vertexAttrib0Simulated = simulateVertexAttrib0(numElements); |
| } |
| if (!isGLES2NPOTStrict()) |
| checkTextureCompleteness("drawElements", true); |
| |
| m_context->drawElements(mode, count, type, static_cast<GC3Dintptr>(offset)); |
| |
| if (!isGLES2Compliant() && vertexAttrib0Simulated) |
| restoreStatesAfterVertexAttrib0Simulation(); |
| if (!isGLES2NPOTStrict()) |
| checkTextureCompleteness("drawElements", false); |
| markContextChanged(); |
| } |
| |
| void WebGLRenderingContextBase::enable(GC3Denum cap) |
| { |
| if (isContextLostOrPending() || !validateCapability("enable", cap)) |
| return; |
| if (cap == GraphicsContext3D::STENCIL_TEST) { |
| m_stencilEnabled = true; |
| applyStencilTest(); |
| return; |
| } |
| if (cap == GraphicsContext3D::SCISSOR_TEST) |
| m_scissorEnabled = true; |
| m_context->enable(cap); |
| } |
| |
| void WebGLRenderingContextBase::enableVertexAttribArray(GC3Duint index, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return; |
| if (index >= m_maxVertexAttribs) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "enableVertexAttribArray", "index out of range"); |
| return; |
| } |
| |
| WebGLVertexArrayObjectBase::VertexAttribState& state = m_boundVertexArrayObject->getVertexAttribState(index); |
| state.enabled = true; |
| |
| m_context->enableVertexAttribArray(index); |
| } |
| |
| void WebGLRenderingContextBase::finish() |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->finish(); |
| } |
| |
| void WebGLRenderingContextBase::flush() |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->flush(); |
| } |
| |
| void WebGLRenderingContextBase::framebufferRenderbuffer(GC3Denum target, GC3Denum attachment, GC3Denum renderbuffertarget, WebGLRenderbuffer* buffer, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateFramebufferFuncParameters("framebufferRenderbuffer", target, attachment)) |
| return; |
| if (renderbuffertarget != GraphicsContext3D::RENDERBUFFER) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "framebufferRenderbuffer", "invalid target"); |
| return; |
| } |
| if (buffer && !buffer->validate(contextGroup(), this)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "framebufferRenderbuffer", "no buffer or buffer not from this context"); |
| return; |
| } |
| // Don't allow the default framebuffer to be mutated; all current |
| // implementations use an FBO internally in place of the default |
| // FBO. |
| if (!m_framebufferBinding || !m_framebufferBinding->object()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "framebufferRenderbuffer", "no framebuffer bound"); |
| return; |
| } |
| Platform3DObject bufferObject = objectOrZero(buffer); |
| switch (attachment) { |
| case GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT: |
| m_context->framebufferRenderbuffer(target, GraphicsContext3D::DEPTH_ATTACHMENT, renderbuffertarget, bufferObject); |
| m_context->framebufferRenderbuffer(target, GraphicsContext3D::STENCIL_ATTACHMENT, renderbuffertarget, bufferObject); |
| break; |
| default: |
| m_context->framebufferRenderbuffer(target, attachment, renderbuffertarget, bufferObject); |
| } |
| m_framebufferBinding->setAttachmentForBoundFramebuffer(attachment, buffer); |
| applyStencilTest(); |
| } |
| |
| void WebGLRenderingContextBase::framebufferTexture2D(GC3Denum target, GC3Denum attachment, GC3Denum textarget, WebGLTexture* texture, GC3Dint level, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateFramebufferFuncParameters("framebufferTexture2D", target, attachment)) |
| return; |
| if (level) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "framebufferTexture2D", "level not 0"); |
| return; |
| } |
| if (texture && !texture->validate(contextGroup(), this)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "framebufferTexture2D", "no texture or texture not from this context"); |
| return; |
| } |
| // Don't allow the default framebuffer to be mutated; all current |
| // implementations use an FBO internally in place of the default |
| // FBO. |
| if (!m_framebufferBinding || !m_framebufferBinding->object()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "framebufferTexture2D", "no framebuffer bound"); |
| return; |
| } |
| Platform3DObject textureObject = objectOrZero(texture); |
| switch (attachment) { |
| case GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT: |
| m_context->framebufferTexture2D(target, GraphicsContext3D::DEPTH_ATTACHMENT, textarget, textureObject, level); |
| m_context->framebufferTexture2D(target, GraphicsContext3D::STENCIL_ATTACHMENT, textarget, textureObject, level); |
| break; |
| case GraphicsContext3D::DEPTH_ATTACHMENT: |
| m_context->framebufferTexture2D(target, attachment, textarget, textureObject, level); |
| break; |
| case GraphicsContext3D::STENCIL_ATTACHMENT: |
| m_context->framebufferTexture2D(target, attachment, textarget, textureObject, level); |
| break; |
| default: |
| m_context->framebufferTexture2D(target, attachment, textarget, textureObject, level); |
| } |
| m_framebufferBinding->setAttachmentForBoundFramebuffer(attachment, textarget, texture, level); |
| applyStencilTest(); |
| } |
| |
| void WebGLRenderingContextBase::frontFace(GC3Denum mode) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->frontFace(mode); |
| } |
| |
| void WebGLRenderingContextBase::generateMipmap(GC3Denum target) |
| { |
| if (isContextLostOrPending()) |
| return; |
| WebGLTexture* tex = validateTextureBinding("generateMipmap", target, false); |
| if (!tex) |
| return; |
| if (!tex->canGenerateMipmaps()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "generateMipmap", "level 0 not power of 2 or not all the same size"); |
| return; |
| } |
| // FIXME: https://bugs.webkit.org/show_bug.cgi?id=123916. Compressed textures should be allowed in WebGL 2: |
| if (tex->isCompressed()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "generateMipmap", "trying to generate mipmaps from compressed texture"); |
| return; |
| } |
| if (!validateSettableTexFormat("generateMipmap", tex->getInternalFormat(target, 0))) |
| return; |
| |
| // generateMipmap won't work properly if minFilter is not NEAREST_MIPMAP_LINEAR |
| // on Mac. Remove the hack once this driver bug is fixed. |
| #if OS(DARWIN) |
| bool needToResetMinFilter = false; |
| if (tex->getMinFilter() != GraphicsContext3D::NEAREST_MIPMAP_LINEAR) { |
| m_context->texParameteri(target, GraphicsContext3D::TEXTURE_MIN_FILTER, GraphicsContext3D::NEAREST_MIPMAP_LINEAR); |
| needToResetMinFilter = true; |
| } |
| #endif |
| m_context->generateMipmap(target); |
| #if OS(DARWIN) |
| if (needToResetMinFilter) |
| m_context->texParameteri(target, GraphicsContext3D::TEXTURE_MIN_FILTER, tex->getMinFilter()); |
| #endif |
| tex->generateMipmapLevelInfo(); |
| } |
| |
| PassRefPtr<WebGLActiveInfo> WebGLRenderingContextBase::getActiveAttrib(WebGLProgram* program, GC3Duint index, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("getActiveAttrib", program)) |
| return nullptr; |
| ActiveInfo info; |
| if (!m_context->getActiveAttrib(objectOrZero(program), index, info)) |
| return nullptr; |
| |
| LOG(WebGL, "Returning active attribute %d: %s", index, info.name.utf8().data()); |
| |
| return WebGLActiveInfo::create(info.name, info.type, info.size); |
| } |
| |
| PassRefPtr<WebGLActiveInfo> WebGLRenderingContextBase::getActiveUniform(WebGLProgram* program, GC3Duint index, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("getActiveUniform", program)) |
| return 0; |
| ActiveInfo info; |
| if (!m_context->getActiveUniform(objectOrZero(program), index, info)) |
| return nullptr; |
| if (!isGLES2Compliant()) |
| if (info.size > 1 && !info.name.endsWith("[0]")) |
| info.name.append("[0]"); |
| |
| LOG(WebGL, "Returning active uniform %d: %s", index, info.name.utf8().data()); |
| |
| return WebGLActiveInfo::create(info.name, info.type, info.size); |
| } |
| |
| bool WebGLRenderingContextBase::getAttachedShaders(WebGLProgram* program, Vector<RefPtr<WebGLShader>>& shaderObjects, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| shaderObjects.clear(); |
| if (isContextLostOrPending() || !validateWebGLObject("getAttachedShaders", program)) |
| return false; |
| |
| const GC3Denum shaderType[] = { |
| GraphicsContext3D::VERTEX_SHADER, |
| GraphicsContext3D::FRAGMENT_SHADER |
| }; |
| for (unsigned i = 0; i < sizeof(shaderType) / sizeof(GC3Denum); ++i) { |
| WebGLShader* shader = program->getAttachedShader(shaderType[i]); |
| if (shader) |
| shaderObjects.append(shader); |
| } |
| return true; |
| } |
| |
| GC3Dint WebGLRenderingContextBase::getAttribLocation(WebGLProgram* program, const String& name) |
| { |
| if (isContextLostOrPending() || !validateWebGLObject("getAttribLocation", program)) |
| return -1; |
| if (!validateLocationLength("getAttribLocation", name)) |
| return -1; |
| if (!validateString("getAttribLocation", name)) |
| return -1; |
| if (isPrefixReserved(name)) |
| return -1; |
| if (!program->getLinkStatus()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "getAttribLocation", "program not linked"); |
| return -1; |
| } |
| return m_context->getAttribLocation(objectOrZero(program), name); |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getBufferParameter(GC3Denum target, GC3Denum pname, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return WebGLGetInfo(); |
| if (target != GraphicsContext3D::ARRAY_BUFFER && target != GraphicsContext3D::ELEMENT_ARRAY_BUFFER) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getBufferParameter", "invalid target"); |
| return WebGLGetInfo(); |
| } |
| |
| if (pname != GraphicsContext3D::BUFFER_SIZE && pname != GraphicsContext3D::BUFFER_USAGE) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getBufferParameter", "invalid parameter name"); |
| return WebGLGetInfo(); |
| } |
| |
| GC3Dint value = 0; |
| m_context->getBufferParameteriv(target, pname, &value); |
| if (pname == GraphicsContext3D::BUFFER_SIZE) |
| return WebGLGetInfo(value); |
| return WebGLGetInfo(static_cast<unsigned int>(value)); |
| } |
| |
| PassRefPtr<WebGLContextAttributes> WebGLRenderingContextBase::getContextAttributes() |
| { |
| if (isContextLostOrPending()) |
| return nullptr; |
| // We always need to return a new WebGLContextAttributes object to |
| // prevent the user from mutating any cached version. |
| |
| // Also, we need to enforce requested values of "false" for depth |
| // and stencil, regardless of the properties of the underlying |
| // GraphicsContext3D. |
| RefPtr<WebGLContextAttributes> attributes = WebGLContextAttributes::create(m_context->getContextAttributes()); |
| if (!m_attributes.depth) |
| attributes->setDepth(false); |
| if (!m_attributes.stencil) |
| attributes->setStencil(false); |
| return attributes.release(); |
| } |
| |
| GC3Denum WebGLRenderingContextBase::getError() |
| { |
| if (m_isPendingPolicyResolution) |
| return GraphicsContext3D::NO_ERROR; |
| return m_context->getError(); |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getProgramParameter(WebGLProgram* program, GC3Denum pname, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("getProgramParameter", program)) |
| return WebGLGetInfo(); |
| |
| GC3Dint value = 0; |
| switch (pname) { |
| case GraphicsContext3D::DELETE_STATUS: |
| return WebGLGetInfo(program->isDeleted()); |
| case GraphicsContext3D::VALIDATE_STATUS: |
| m_context->getProgramiv(objectOrZero(program), pname, &value); |
| return WebGLGetInfo(static_cast<bool>(value)); |
| case GraphicsContext3D::LINK_STATUS: |
| return WebGLGetInfo(program->getLinkStatus()); |
| case GraphicsContext3D::ATTACHED_SHADERS: |
| m_context->getProgramiv(objectOrZero(program), pname, &value); |
| return WebGLGetInfo(value); |
| case GraphicsContext3D::ACTIVE_ATTRIBUTES: |
| case GraphicsContext3D::ACTIVE_UNIFORMS: |
| m_context->getNonBuiltInActiveSymbolCount(objectOrZero(program), pname, &value); |
| return WebGLGetInfo(value); |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getProgramParameter", "invalid parameter name"); |
| return WebGLGetInfo(); |
| } |
| } |
| |
| String WebGLRenderingContextBase::getProgramInfoLog(WebGLProgram* program, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("getProgramInfoLog", program)) |
| return String(); |
| return ensureNotNull(m_context->getProgramInfoLog(objectOrZero(program))); |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getRenderbufferParameter(GC3Denum target, GC3Denum pname, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return WebGLGetInfo(); |
| if (target != GraphicsContext3D::RENDERBUFFER) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getRenderbufferParameter", "invalid target"); |
| return WebGLGetInfo(); |
| } |
| if (!m_renderbufferBinding || !m_renderbufferBinding->object()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "getRenderbufferParameter", "no renderbuffer bound"); |
| return WebGLGetInfo(); |
| } |
| |
| if (m_renderbufferBinding->getInternalFormat() == GraphicsContext3D::DEPTH_STENCIL |
| && !m_renderbufferBinding->isValid()) { |
| ASSERT(!isDepthStencilSupported()); |
| int value = 0; |
| switch (pname) { |
| case GraphicsContext3D::RENDERBUFFER_WIDTH: |
| value = m_renderbufferBinding->getWidth(); |
| break; |
| case GraphicsContext3D::RENDERBUFFER_HEIGHT: |
| value = m_renderbufferBinding->getHeight(); |
| break; |
| case GraphicsContext3D::RENDERBUFFER_RED_SIZE: |
| case GraphicsContext3D::RENDERBUFFER_GREEN_SIZE: |
| case GraphicsContext3D::RENDERBUFFER_BLUE_SIZE: |
| case GraphicsContext3D::RENDERBUFFER_ALPHA_SIZE: |
| value = 0; |
| break; |
| case GraphicsContext3D::RENDERBUFFER_DEPTH_SIZE: |
| value = 24; |
| break; |
| case GraphicsContext3D::RENDERBUFFER_STENCIL_SIZE: |
| value = 8; |
| break; |
| case GraphicsContext3D::RENDERBUFFER_INTERNAL_FORMAT: |
| return WebGLGetInfo(m_renderbufferBinding->getInternalFormat()); |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getRenderbufferParameter", "invalid parameter name"); |
| return WebGLGetInfo(); |
| } |
| return WebGLGetInfo(value); |
| } |
| |
| GC3Dint value = 0; |
| switch (pname) { |
| case GraphicsContext3D::RENDERBUFFER_WIDTH: |
| case GraphicsContext3D::RENDERBUFFER_HEIGHT: |
| case GraphicsContext3D::RENDERBUFFER_RED_SIZE: |
| case GraphicsContext3D::RENDERBUFFER_GREEN_SIZE: |
| case GraphicsContext3D::RENDERBUFFER_BLUE_SIZE: |
| case GraphicsContext3D::RENDERBUFFER_ALPHA_SIZE: |
| case GraphicsContext3D::RENDERBUFFER_DEPTH_SIZE: |
| case GraphicsContext3D::RENDERBUFFER_STENCIL_SIZE: |
| m_context->getRenderbufferParameteriv(target, pname, &value); |
| return WebGLGetInfo(value); |
| case GraphicsContext3D::RENDERBUFFER_INTERNAL_FORMAT: |
| return WebGLGetInfo(m_renderbufferBinding->getInternalFormat()); |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getRenderbufferParameter", "invalid parameter name"); |
| return WebGLGetInfo(); |
| } |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getShaderParameter(WebGLShader* shader, GC3Denum pname, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("getShaderParameter", shader)) |
| return WebGLGetInfo(); |
| GC3Dint value = 0; |
| switch (pname) { |
| case GraphicsContext3D::DELETE_STATUS: |
| return WebGLGetInfo(shader->isDeleted()); |
| case GraphicsContext3D::COMPILE_STATUS: |
| m_context->getShaderiv(objectOrZero(shader), pname, &value); |
| return WebGLGetInfo(static_cast<bool>(value)); |
| case GraphicsContext3D::SHADER_TYPE: |
| m_context->getShaderiv(objectOrZero(shader), pname, &value); |
| return WebGLGetInfo(static_cast<unsigned int>(value)); |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getShaderParameter", "invalid parameter name"); |
| return WebGLGetInfo(); |
| } |
| } |
| |
| String WebGLRenderingContextBase::getShaderInfoLog(WebGLShader* shader, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("getShaderInfoLog", shader)) |
| return String(); |
| return ensureNotNull(m_context->getShaderInfoLog(objectOrZero(shader))); |
| } |
| |
| PassRefPtr<WebGLShaderPrecisionFormat> WebGLRenderingContextBase::getShaderPrecisionFormat(GC3Denum shaderType, GC3Denum precisionType, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return nullptr; |
| switch (shaderType) { |
| case GraphicsContext3D::VERTEX_SHADER: |
| case GraphicsContext3D::FRAGMENT_SHADER: |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getShaderPrecisionFormat", "invalid shader type"); |
| return nullptr; |
| } |
| switch (precisionType) { |
| case GraphicsContext3D::LOW_FLOAT: |
| case GraphicsContext3D::MEDIUM_FLOAT: |
| case GraphicsContext3D::HIGH_FLOAT: |
| case GraphicsContext3D::LOW_INT: |
| case GraphicsContext3D::MEDIUM_INT: |
| case GraphicsContext3D::HIGH_INT: |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getShaderPrecisionFormat", "invalid precision type"); |
| return nullptr; |
| } |
| |
| GC3Dint range[2] = {0, 0}; |
| GC3Dint precision = 0; |
| m_context->getShaderPrecisionFormat(shaderType, precisionType, range, &precision); |
| return WebGLShaderPrecisionFormat::create(range[0], range[1], precision); |
| } |
| |
| String WebGLRenderingContextBase::getShaderSource(WebGLShader* shader, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("getShaderSource", shader)) |
| return String(); |
| return ensureNotNull(shader->getSource()); |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getTexParameter(GC3Denum target, GC3Denum pname, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return WebGLGetInfo(); |
| WebGLTexture* tex = validateTextureBinding("getTexParameter", target, false); |
| if (!tex) |
| return WebGLGetInfo(); |
| GC3Dint value = 0; |
| switch (pname) { |
| case GraphicsContext3D::TEXTURE_MAG_FILTER: |
| case GraphicsContext3D::TEXTURE_MIN_FILTER: |
| case GraphicsContext3D::TEXTURE_WRAP_S: |
| case GraphicsContext3D::TEXTURE_WRAP_T: |
| m_context->getTexParameteriv(target, pname, &value); |
| return WebGLGetInfo(static_cast<unsigned int>(value)); |
| case Extensions3D::TEXTURE_MAX_ANISOTROPY_EXT: // EXT_texture_filter_anisotropic |
| if (m_extTextureFilterAnisotropic) { |
| m_context->getTexParameteriv(target, pname, &value); |
| return WebGLGetInfo(static_cast<unsigned int>(value)); |
| } |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getTexParameter", "invalid parameter name, EXT_texture_filter_anisotropic not enabled"); |
| return WebGLGetInfo(); |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getTexParameter", "invalid parameter name"); |
| return WebGLGetInfo(); |
| } |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getUniform(WebGLProgram* program, const WebGLUniformLocation* uniformLocation, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("getUniform", program)) |
| return WebGLGetInfo(); |
| if (!uniformLocation || uniformLocation->program() != program) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "getUniform", "no uniformlocation or not valid for this program"); |
| return WebGLGetInfo(); |
| } |
| GC3Dint location = uniformLocation->location(); |
| |
| GC3Denum baseType; |
| unsigned length; |
| switch (uniformLocation->type()) { |
| case GraphicsContext3D::BOOL: |
| baseType = GraphicsContext3D::BOOL; |
| length = 1; |
| break; |
| case GraphicsContext3D::BOOL_VEC2: |
| baseType = GraphicsContext3D::BOOL; |
| length = 2; |
| break; |
| case GraphicsContext3D::BOOL_VEC3: |
| baseType = GraphicsContext3D::BOOL; |
| length = 3; |
| break; |
| case GraphicsContext3D::BOOL_VEC4: |
| baseType = GraphicsContext3D::BOOL; |
| length = 4; |
| break; |
| case GraphicsContext3D::INT: |
| baseType = GraphicsContext3D::INT; |
| length = 1; |
| break; |
| case GraphicsContext3D::INT_VEC2: |
| baseType = GraphicsContext3D::INT; |
| length = 2; |
| break; |
| case GraphicsContext3D::INT_VEC3: |
| baseType = GraphicsContext3D::INT; |
| length = 3; |
| break; |
| case GraphicsContext3D::INT_VEC4: |
| baseType = GraphicsContext3D::INT; |
| length = 4; |
| break; |
| case GraphicsContext3D::FLOAT: |
| baseType = GraphicsContext3D::FLOAT; |
| length = 1; |
| break; |
| case GraphicsContext3D::FLOAT_VEC2: |
| baseType = GraphicsContext3D::FLOAT; |
| length = 2; |
| break; |
| case GraphicsContext3D::FLOAT_VEC3: |
| baseType = GraphicsContext3D::FLOAT; |
| length = 3; |
| break; |
| case GraphicsContext3D::FLOAT_VEC4: |
| baseType = GraphicsContext3D::FLOAT; |
| length = 4; |
| break; |
| case GraphicsContext3D::FLOAT_MAT2: |
| baseType = GraphicsContext3D::FLOAT; |
| length = 4; |
| break; |
| case GraphicsContext3D::FLOAT_MAT3: |
| baseType = GraphicsContext3D::FLOAT; |
| length = 9; |
| break; |
| case GraphicsContext3D::FLOAT_MAT4: |
| baseType = GraphicsContext3D::FLOAT; |
| length = 16; |
| break; |
| case GraphicsContext3D::SAMPLER_2D: |
| case GraphicsContext3D::SAMPLER_CUBE: |
| baseType = GraphicsContext3D::INT; |
| length = 1; |
| break; |
| default: |
| // Can't handle this type |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "getUniform", "unhandled type"); |
| return WebGLGetInfo(); |
| } |
| switch (baseType) { |
| case GraphicsContext3D::FLOAT: { |
| GC3Dfloat value[16] = {0}; |
| if (m_isRobustnessEXTSupported) |
| m_context->getExtensions()->getnUniformfvEXT(objectOrZero(program), location, 16 * sizeof(GC3Dfloat), value); |
| else |
| m_context->getUniformfv(objectOrZero(program), location, value); |
| if (length == 1) |
| return WebGLGetInfo(value[0]); |
| return WebGLGetInfo(Float32Array::create(value, length).release()); |
| } |
| case GraphicsContext3D::INT: { |
| GC3Dint value[4] = {0}; |
| if (m_isRobustnessEXTSupported) |
| m_context->getExtensions()->getnUniformivEXT(objectOrZero(program), location, 4 * sizeof(GC3Dint), value); |
| else |
| m_context->getUniformiv(objectOrZero(program), location, value); |
| if (length == 1) |
| return WebGLGetInfo(value[0]); |
| return WebGLGetInfo(Int32Array::create(value, length).release()); |
| } |
| case GraphicsContext3D::BOOL: { |
| GC3Dint value[4] = {0}; |
| if (m_isRobustnessEXTSupported) |
| m_context->getExtensions()->getnUniformivEXT(objectOrZero(program), location, 4 * sizeof(GC3Dint), value); |
| else |
| m_context->getUniformiv(objectOrZero(program), location, value); |
| if (length > 1) { |
| bool boolValue[16] = {0}; |
| for (unsigned j = 0; j < length; j++) |
| boolValue[j] = static_cast<bool>(value[j]); |
| return WebGLGetInfo(boolValue, length); |
| } |
| return WebGLGetInfo(static_cast<bool>(value[0])); |
| } |
| default: |
| notImplemented(); |
| } |
| |
| // If we get here, something went wrong in our unfortunately complex logic above |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "getUniform", "unknown error"); |
| return WebGLGetInfo(); |
| } |
| |
| PassRefPtr<WebGLUniformLocation> WebGLRenderingContextBase::getUniformLocation(WebGLProgram* program, const String& name, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("getUniformLocation", program)) |
| return nullptr; |
| if (!validateLocationLength("getUniformLocation", name)) |
| return nullptr; |
| if (!validateString("getUniformLocation", name)) |
| return nullptr; |
| if (isPrefixReserved(name)) |
| return nullptr; |
| if (!program->getLinkStatus()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "getUniformLocation", "program not linked"); |
| return nullptr; |
| } |
| GC3Dint uniformLocation = m_context->getUniformLocation(objectOrZero(program), name); |
| if (uniformLocation == -1) |
| return nullptr; |
| |
| GC3Dint activeUniforms = 0; |
| m_context->getNonBuiltInActiveSymbolCount(objectOrZero(program), GraphicsContext3D::ACTIVE_UNIFORMS, &activeUniforms); |
| for (GC3Dint i = 0; i < activeUniforms; i++) { |
| ActiveInfo info; |
| if (!m_context->getActiveUniform(objectOrZero(program), i, info)) |
| return nullptr; |
| // Strip "[0]" from the name if it's an array. |
| if (info.name.endsWith("[0]")) |
| info.name = info.name.left(info.name.length() - 3); |
| // If it's an array, we need to iterate through each element, appending "[index]" to the name. |
| for (GC3Dint index = 0; index < info.size; ++index) { |
| String uniformName = info.name + "[" + String::number(index) + "]"; |
| |
| if (name == uniformName || name == info.name) |
| return WebGLUniformLocation::create(program, uniformLocation, info.type); |
| } |
| } |
| return nullptr; |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getVertexAttrib(GC3Duint index, GC3Denum pname, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| |
| if (isContextLostOrPending()) |
| return WebGLGetInfo(); |
| |
| if (index >= m_maxVertexAttribs) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "getVertexAttrib", "index out of range"); |
| return WebGLGetInfo(); |
| } |
| |
| const WebGLVertexArrayObjectBase::VertexAttribState& state = m_boundVertexArrayObject->getVertexAttribState(index); |
| |
| if ((isWebGL2() || m_angleInstancedArrays) && pname == GraphicsContext3D::VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE) |
| return WebGLGetInfo(state.divisor); |
| |
| switch (pname) { |
| case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: |
| if ((!isGLES2Compliant() && !index && m_boundVertexArrayObject->getVertexAttribState(0).bufferBinding == m_vertexAttrib0Buffer) |
| || !state.bufferBinding |
| || !state.bufferBinding->object()) |
| return WebGLGetInfo(); |
| return WebGLGetInfo(PassRefPtr<WebGLBuffer>(state.bufferBinding)); |
| case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_ENABLED: |
| return WebGLGetInfo(state.enabled); |
| case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_NORMALIZED: |
| return WebGLGetInfo(state.normalized); |
| case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_SIZE: |
| return WebGLGetInfo(state.size); |
| case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_STRIDE: |
| return WebGLGetInfo(state.originalStride); |
| case GraphicsContext3D::VERTEX_ATTRIB_ARRAY_TYPE: |
| return WebGLGetInfo(state.type); |
| case GraphicsContext3D::CURRENT_VERTEX_ATTRIB: |
| return WebGLGetInfo(Float32Array::create(m_vertexAttribValue[index].value, 4).release()); |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "getVertexAttrib", "invalid parameter name"); |
| return WebGLGetInfo(); |
| } |
| } |
| |
| long long WebGLRenderingContextBase::getVertexAttribOffset(GC3Duint index, GC3Denum pname) |
| { |
| if (isContextLostOrPending()) |
| return 0; |
| GC3Dsizeiptr result = m_context->getVertexAttribOffset(index, pname); |
| return static_cast<long long>(result); |
| } |
| |
| GC3Dboolean WebGLRenderingContextBase::isBuffer(WebGLBuffer* buffer) |
| { |
| if (!buffer || isContextLostOrPending()) |
| return 0; |
| |
| if (!buffer->hasEverBeenBound()) |
| return 0; |
| |
| return m_context->isBuffer(buffer->object()); |
| } |
| |
| bool WebGLRenderingContextBase::isContextLost() const |
| { |
| return m_contextLost; |
| } |
| |
| bool WebGLRenderingContextBase::isContextLostOrPending() |
| { |
| if (m_isPendingPolicyResolution && !m_hasRequestedPolicyResolution) { |
| LOG(WebGL, "Context is being used. Attempt to resolve the policy."); |
| Document& document = canvas()->document().topDocument(); |
| Page* page = document.page(); |
| if (page && !document.url().isLocalFile()) |
| page->mainFrame().loader().client().resolveWebGLPolicyForURL(document.url()); |
| // FIXME: We don't currently do anything with the result from resolution. A more |
| // complete implementation might try to construct a real context, etc and proceed |
| // with normal operation. |
| // https://bugs.webkit.org/show_bug.cgi?id=129122 |
| m_hasRequestedPolicyResolution = true; |
| } |
| |
| return m_contextLost || m_isPendingPolicyResolution; |
| } |
| |
| GC3Dboolean WebGLRenderingContextBase::isEnabled(GC3Denum cap) |
| { |
| if (isContextLostOrPending() || !validateCapability("isEnabled", cap)) |
| return 0; |
| if (cap == GraphicsContext3D::STENCIL_TEST) |
| return m_stencilEnabled; |
| return m_context->isEnabled(cap); |
| } |
| |
| GC3Dboolean WebGLRenderingContextBase::isFramebuffer(WebGLFramebuffer* framebuffer) |
| { |
| if (!framebuffer || isContextLostOrPending()) |
| return 0; |
| |
| if (!framebuffer->hasEverBeenBound()) |
| return 0; |
| |
| return m_context->isFramebuffer(framebuffer->object()); |
| } |
| |
| GC3Dboolean WebGLRenderingContextBase::isProgram(WebGLProgram* program) |
| { |
| if (!program || isContextLostOrPending()) |
| return 0; |
| |
| return m_context->isProgram(program->object()); |
| } |
| |
| GC3Dboolean WebGLRenderingContextBase::isRenderbuffer(WebGLRenderbuffer* renderbuffer) |
| { |
| if (!renderbuffer || isContextLostOrPending()) |
| return 0; |
| |
| if (!renderbuffer->hasEverBeenBound()) |
| return 0; |
| |
| return m_context->isRenderbuffer(renderbuffer->object()); |
| } |
| |
| GC3Dboolean WebGLRenderingContextBase::isShader(WebGLShader* shader) |
| { |
| if (!shader || isContextLostOrPending()) |
| return 0; |
| |
| return m_context->isShader(shader->object()); |
| } |
| |
| GC3Dboolean WebGLRenderingContextBase::isTexture(WebGLTexture* texture) |
| { |
| if (!texture || isContextLostOrPending()) |
| return 0; |
| |
| if (!texture->hasEverBeenBound()) |
| return 0; |
| |
| return m_context->isTexture(texture->object()); |
| } |
| |
| void WebGLRenderingContextBase::lineWidth(GC3Dfloat width) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->lineWidth(width); |
| } |
| |
| void WebGLRenderingContextBase::linkProgram(WebGLProgram* program, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("linkProgram", program)) |
| return; |
| WebGLShader* vertexShader = program->getAttachedShader(GraphicsContext3D::VERTEX_SHADER); |
| WebGLShader* fragmentShader = program->getAttachedShader(GraphicsContext3D::FRAGMENT_SHADER); |
| if (!vertexShader || !vertexShader->isValid() || !fragmentShader || !fragmentShader->isValid() || !m_context->precisionsMatch(objectOrZero(vertexShader), objectOrZero(fragmentShader)) || !m_context->checkVaryingsPacking(objectOrZero(vertexShader), objectOrZero(fragmentShader))) { |
| program->setLinkStatus(false); |
| return; |
| } |
| |
| m_context->linkProgram(objectOrZero(program)); |
| program->increaseLinkCount(); |
| } |
| |
| void WebGLRenderingContextBase::pixelStorei(GC3Denum pname, GC3Dint param) |
| { |
| if (isContextLostOrPending()) |
| return; |
| switch (pname) { |
| case GraphicsContext3D::UNPACK_FLIP_Y_WEBGL: |
| m_unpackFlipY = param; |
| break; |
| case GraphicsContext3D::UNPACK_PREMULTIPLY_ALPHA_WEBGL: |
| m_unpackPremultiplyAlpha = param; |
| break; |
| case GraphicsContext3D::UNPACK_COLORSPACE_CONVERSION_WEBGL: |
| if (param == GraphicsContext3D::BROWSER_DEFAULT_WEBGL || param == GraphicsContext3D::NONE) |
| m_unpackColorspaceConversion = static_cast<GC3Denum>(param); |
| else { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "pixelStorei", "invalid parameter for UNPACK_COLORSPACE_CONVERSION_WEBGL"); |
| return; |
| } |
| break; |
| case GraphicsContext3D::PACK_ALIGNMENT: |
| case GraphicsContext3D::UNPACK_ALIGNMENT: |
| if (param == 1 || param == 2 || param == 4 || param == 8) { |
| if (pname == GraphicsContext3D::PACK_ALIGNMENT) |
| m_packAlignment = param; |
| else // GraphicsContext3D::UNPACK_ALIGNMENT: |
| m_unpackAlignment = param; |
| m_context->pixelStorei(pname, param); |
| } else { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "pixelStorei", "invalid parameter for alignment"); |
| return; |
| } |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "pixelStorei", "invalid parameter name"); |
| return; |
| } |
| } |
| |
| void WebGLRenderingContextBase::polygonOffset(GC3Dfloat factor, GC3Dfloat units) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->polygonOffset(factor, units); |
| } |
| |
| void WebGLRenderingContextBase::readPixels(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height, GC3Denum format, GC3Denum type, ArrayBufferView* pixels, ExceptionCode&) |
| { |
| if (isContextLostOrPending()) |
| return; |
| // Due to WebGL's same-origin restrictions, it is not possible to |
| // taint the origin using the WebGL API. |
| ASSERT(canvas()->originClean()); |
| // Validate input parameters. |
| if (!pixels) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "readPixels", "no destination ArrayBufferView"); |
| return; |
| } |
| switch (format) { |
| case GraphicsContext3D::ALPHA: |
| case GraphicsContext3D::RGB: |
| case GraphicsContext3D::RGBA: |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "readPixels", "invalid format"); |
| return; |
| } |
| switch (type) { |
| case GraphicsContext3D::UNSIGNED_BYTE: |
| case GraphicsContext3D::UNSIGNED_SHORT_5_6_5: |
| case GraphicsContext3D::UNSIGNED_SHORT_4_4_4_4: |
| case GraphicsContext3D::UNSIGNED_SHORT_5_5_5_1: |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "readPixels", "invalid type"); |
| return; |
| } |
| if (format != GraphicsContext3D::RGBA || type != GraphicsContext3D::UNSIGNED_BYTE) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "readPixels", "format not RGBA or type not UNSIGNED_BYTE"); |
| return; |
| } |
| // Validate array type against pixel type. |
| if (pixels->getType() != JSC::TypeUint8) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "readPixels", "ArrayBufferView not Uint8Array"); |
| return; |
| } |
| const char* reason = "framebuffer incomplete"; |
| if (m_framebufferBinding && !m_framebufferBinding->onAccess(graphicsContext3D(), !isResourceSafe(), &reason)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION, "readPixels", reason); |
| return; |
| } |
| // Calculate array size, taking into consideration of PACK_ALIGNMENT. |
| unsigned int totalBytesRequired = 0; |
| unsigned int padding = 0; |
| if (!m_isRobustnessEXTSupported) { |
| GC3Denum error = m_context->computeImageSizeInBytes(format, type, width, height, m_packAlignment, &totalBytesRequired, &padding); |
| if (error != GraphicsContext3D::NO_ERROR) { |
| synthesizeGLError(error, "readPixels", "invalid dimensions"); |
| return; |
| } |
| if (pixels->byteLength() < totalBytesRequired) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "readPixels", "ArrayBufferView not large enough for dimensions"); |
| return; |
| } |
| } |
| |
| clearIfComposited(); |
| void* data = pixels->baseAddress(); |
| |
| { |
| if (m_isRobustnessEXTSupported) |
| m_context->getExtensions()->readnPixelsEXT(x, y, width, height, format, type, pixels->byteLength(), data); |
| else |
| m_context->readPixels(x, y, width, height, format, type, data); |
| } |
| |
| #if OS(DARWIN) |
| if (m_isRobustnessEXTSupported) // we haven't computed padding |
| m_context->computeImageSizeInBytes(format, type, width, height, m_packAlignment, &totalBytesRequired, &padding); |
| // FIXME: remove this section when GL driver bug on Mac AND the GLES driver bug |
| // on QC is fixed, i.e., when alpha is off, readPixels should |
| // set alpha to 255 instead of 0. |
| if (!m_framebufferBinding && !m_context->getContextAttributes().alpha) { |
| unsigned char* pixels = reinterpret_cast<unsigned char*>(data); |
| for (GC3Dsizei iy = 0; iy < height; ++iy) { |
| for (GC3Dsizei ix = 0; ix < width; ++ix) { |
| pixels[3] = 255; |
| pixels += 4; |
| } |
| pixels += padding; |
| } |
| } |
| #endif |
| } |
| |
| void WebGLRenderingContextBase::releaseShaderCompiler() |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->releaseShaderCompiler(); |
| } |
| |
| void WebGLRenderingContextBase::sampleCoverage(GC3Dfloat value, GC3Dboolean invert) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->sampleCoverage(value, invert); |
| } |
| |
| void WebGLRenderingContextBase::scissor(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (!validateSize("scissor", width, height)) |
| return; |
| m_context->scissor(x, y, width, height); |
| } |
| |
| void WebGLRenderingContextBase::shaderSource(WebGLShader* shader, const String& string, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("shaderSource", shader)) |
| return; |
| String stringWithoutComments = StripComments(string).result(); |
| if (!validateString("shaderSource", stringWithoutComments)) |
| return; |
| shader->setSource(string); |
| m_context->shaderSource(objectOrZero(shader), stringWithoutComments); |
| } |
| |
| void WebGLRenderingContextBase::stencilFunc(GC3Denum func, GC3Dint ref, GC3Duint mask) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (!validateStencilFunc("stencilFunc", func)) |
| return; |
| m_stencilFuncRef = ref; |
| m_stencilFuncRefBack = ref; |
| m_stencilFuncMask = mask; |
| m_stencilFuncMaskBack = mask; |
| m_context->stencilFunc(func, ref, mask); |
| } |
| |
| void WebGLRenderingContextBase::stencilFuncSeparate(GC3Denum face, GC3Denum func, GC3Dint ref, GC3Duint mask) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (!validateStencilFunc("stencilFuncSeparate", func)) |
| return; |
| switch (face) { |
| case GraphicsContext3D::FRONT_AND_BACK: |
| m_stencilFuncRef = ref; |
| m_stencilFuncRefBack = ref; |
| m_stencilFuncMask = mask; |
| m_stencilFuncMaskBack = mask; |
| break; |
| case GraphicsContext3D::FRONT: |
| m_stencilFuncRef = ref; |
| m_stencilFuncMask = mask; |
| break; |
| case GraphicsContext3D::BACK: |
| m_stencilFuncRefBack = ref; |
| m_stencilFuncMaskBack = mask; |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "stencilFuncSeparate", "invalid face"); |
| return; |
| } |
| m_context->stencilFuncSeparate(face, func, ref, mask); |
| } |
| |
| void WebGLRenderingContextBase::stencilMask(GC3Duint mask) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_stencilMask = mask; |
| m_stencilMaskBack = mask; |
| m_context->stencilMask(mask); |
| } |
| |
| void WebGLRenderingContextBase::stencilMaskSeparate(GC3Denum face, GC3Duint mask) |
| { |
| if (isContextLostOrPending()) |
| return; |
| switch (face) { |
| case GraphicsContext3D::FRONT_AND_BACK: |
| m_stencilMask = mask; |
| m_stencilMaskBack = mask; |
| break; |
| case GraphicsContext3D::FRONT: |
| m_stencilMask = mask; |
| break; |
| case GraphicsContext3D::BACK: |
| m_stencilMaskBack = mask; |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "stencilMaskSeparate", "invalid face"); |
| return; |
| } |
| m_context->stencilMaskSeparate(face, mask); |
| } |
| |
| void WebGLRenderingContextBase::stencilOp(GC3Denum fail, GC3Denum zfail, GC3Denum zpass) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->stencilOp(fail, zfail, zpass); |
| } |
| |
| void WebGLRenderingContextBase::stencilOpSeparate(GC3Denum face, GC3Denum fail, GC3Denum zfail, GC3Denum zpass) |
| { |
| if (isContextLostOrPending()) |
| return; |
| m_context->stencilOpSeparate(face, fail, zfail, zpass); |
| } |
| |
| void WebGLRenderingContextBase::texImage2DBase(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height, GC3Dint border, GC3Denum format, GC3Denum type, const void* pixels, ExceptionCode& ec) |
| { |
| // FIXME: For now we ignore any errors returned. |
| ec = 0; |
| WebGLTexture* tex = validateTextureBinding("texImage2D", target, true); |
| ASSERT(validateTexFuncParameters("texImage2D", TexImage, target, level, internalformat, width, height, border, format, type)); |
| ASSERT(tex); |
| ASSERT(!level || !WebGLTexture::isNPOT(width, height)); |
| if (!pixels) { |
| // Note: Chromium's OpenGL implementation clears textures and isResourceSafe() is therefore true. |
| // For other implementations, if they are using ANGLE_depth_texture, ANGLE depth textures |
| // can not be cleared with texImage2D and must be cleared by binding to an fbo and calling |
| // clear. |
| if (isResourceSafe()) |
| m_context->texImage2D(target, level, internalformat, width, height, border, format, type, nullptr); |
| else { |
| bool succeed = m_context->texImage2DResourceSafe(target, level, internalformat, width, height, |
| border, format, type, m_unpackAlignment); |
| if (!succeed) |
| return; |
| } |
| } else { |
| ASSERT(validateSettableTexFormat("texImage2D", internalformat)); |
| m_context->moveErrorsToSyntheticErrorList(); |
| m_context->texImage2D(target, level, internalformat, width, height, |
| border, format, type, pixels); |
| if (m_context->moveErrorsToSyntheticErrorList()) { |
| // The texImage2D function failed. Tell the WebGLTexture it doesn't have the data for this level. |
| tex->markInvalid(target, level); |
| return; |
| } |
| } |
| tex->setLevelInfo(target, level, internalformat, width, height, type); |
| } |
| |
| void WebGLRenderingContextBase::texImage2DImpl(GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Denum format, GC3Denum type, Image* image, GraphicsContext3D::ImageHtmlDomSource domSource, bool flipY, bool premultiplyAlpha, ExceptionCode& ec) |
| { |
| ec = 0; |
| Vector<uint8_t> data; |
| GraphicsContext3D::ImageExtractor imageExtractor(image, domSource, premultiplyAlpha, m_unpackColorspaceConversion == GraphicsContext3D::NONE); |
| if (!imageExtractor.extractSucceeded()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "texImage2D", "bad image data"); |
| return; |
| } |
| GraphicsContext3D::DataFormat sourceDataFormat = imageExtractor.imageSourceFormat(); |
| GraphicsContext3D::AlphaOp alphaOp = imageExtractor.imageAlphaOp(); |
| const void* imagePixelData = imageExtractor.imagePixelData(); |
| |
| bool needConversion = true; |
| if (type == GraphicsContext3D::UNSIGNED_BYTE && sourceDataFormat == GraphicsContext3D::DataFormatRGBA8 && format == GraphicsContext3D::RGBA && alphaOp == GraphicsContext3D::AlphaDoNothing && !flipY) |
| needConversion = false; |
| else { |
| if (!m_context->packImageData(image, imagePixelData, format, type, flipY, alphaOp, sourceDataFormat, imageExtractor.imageWidth(), imageExtractor.imageHeight(), imageExtractor.imageSourceUnpackAlignment(), data)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "texImage2D", "packImage error"); |
| return; |
| } |
| } |
| |
| if (m_unpackAlignment != 1) |
| m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, 1); |
| texImage2DBase(target, level, internalformat, image->width(), image->height(), 0, format, type, needConversion ? data.data() : imagePixelData, ec); |
| if (m_unpackAlignment != 1) |
| m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, m_unpackAlignment); |
| } |
| |
| bool WebGLRenderingContextBase::validateTexFunc(const char* functionName, TexFuncValidationFunctionType functionType, TexFuncValidationSourceType sourceType, GC3Denum target, GC3Dint level, GC3Denum internalformat, GC3Dsizei width, GC3Dsizei height, GC3Dint border, GC3Denum format, GC3Denum type, GC3Dint xoffset, GC3Dint yoffset) |
| { |
| if (!validateTexFuncParameters(functionName, functionType, target, level, internalformat, width, height, border, format, type)) |
| return false; |
| |
| WebGLTexture* texture = validateTextureBinding(functionName, target, true); |
| if (!texture) |
| return false; |
| |
| if (functionType != TexSubImage) { |
| if (level && WebGLTexture::isNPOT(width, height)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "level > 0 not power of 2"); |
| return false; |
| } |
| // For SourceArrayBufferView, function validateTexFuncData() would handle whether to validate the SettableTexFormat |
| // by checking if the ArrayBufferView is null or not. |
| if (sourceType != SourceArrayBufferView) { |
| if (!validateSettableTexFormat(functionName, format)) |
| return false; |
| } |
| } else { |
| if (!validateSettableTexFormat(functionName, format)) |
| return false; |
| if (!validateSize(functionName, xoffset, yoffset)) |
| return false; |
| // Before checking if it is in the range, check if overflow happens first. |
| if (xoffset + width < 0 || yoffset + height < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "bad dimensions"); |
| return false; |
| } |
| if (xoffset + width > texture->getWidth(target, level) || yoffset + height > texture->getHeight(target, level)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "dimensions out of range"); |
| return false; |
| } |
| if (texture->getInternalFormat(target, level) != format || texture->getType(target, level) != type) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "type and format do not match texture"); |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| void WebGLRenderingContextBase::texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Dsizei width, GC3Dsizei height, GC3Dint border, |
| GC3Denum format, GC3Denum type, ArrayBufferView* pixels, ExceptionCode& ec) |
| { |
| if (isContextLostOrPending() || !validateTexFuncData("texImage2D", level, width, height, internalformat, format, type, pixels, NullAllowed) |
| || !validateTexFunc("texImage2D", TexImage, SourceArrayBufferView, target, level, internalformat, width, height, border, format, type, 0, 0)) |
| return; |
| void* data = pixels ? pixels->baseAddress() : 0; |
| Vector<uint8_t> tempData; |
| bool changeUnpackAlignment = false; |
| if (data && (m_unpackFlipY || m_unpackPremultiplyAlpha)) { |
| if (!m_context->extractTextureData(width, height, format, type, |
| m_unpackAlignment, |
| m_unpackFlipY, m_unpackPremultiplyAlpha, |
| data, |
| tempData)) |
| return; |
| data = tempData.data(); |
| changeUnpackAlignment = true; |
| } |
| if (changeUnpackAlignment) |
| m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, 1); |
| texImage2DBase(target, level, internalformat, width, height, border, |
| format, type, data, ec); |
| if (changeUnpackAlignment) |
| m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, m_unpackAlignment); |
| } |
| |
| void WebGLRenderingContextBase::texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Denum format, GC3Denum type, ImageData* pixels, ExceptionCode& ec) |
| { |
| ec = 0; |
| if (isContextLostOrPending() || !pixels || !validateTexFunc("texImage2D", TexImage, SourceImageData, target, level, internalformat, pixels->width(), pixels->height(), 0, format, type, 0, 0)) |
| return; |
| Vector<uint8_t> data; |
| bool needConversion = true; |
| // The data from ImageData is always of format RGBA8. |
| // No conversion is needed if destination format is RGBA and type is USIGNED_BYTE and no Flip or Premultiply operation is required. |
| if (!m_unpackFlipY && !m_unpackPremultiplyAlpha && format == GraphicsContext3D::RGBA && type == GraphicsContext3D::UNSIGNED_BYTE) |
| needConversion = false; |
| else { |
| if (!m_context->extractImageData(pixels, format, type, m_unpackFlipY, m_unpackPremultiplyAlpha, data)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "texImage2D", "bad image data"); |
| return; |
| } |
| } |
| if (m_unpackAlignment != 1) |
| m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, 1); |
| texImage2DBase(target, level, internalformat, pixels->width(), pixels->height(), 0, format, type, needConversion ? data.data() : pixels->data()->data(), ec); |
| if (m_unpackAlignment != 1) |
| m_context->pixelStorei(GraphicsContext3D::UNPACK_ALIGNMENT, m_unpackAlignment); |
| } |
| |
| PassRefPtr<Image> WebGLRenderingContextBase::drawImageIntoBuffer(Image& image, int width, int height, int deviceScaleFactor) |
| { |
| IntSize size(width, height); |
| size.scale(deviceScaleFactor); |
| ImageBuffer* buf = m_generatedImageCache.imageBuffer(size); |
| if (!buf) { |
| synthesizeGLError(GraphicsContext3D::OUT_OF_MEMORY, "texImage2D", "out of memory"); |
| return nullptr; |
| } |
| |
| FloatRect srcRect(FloatPoint(), image.size()); |
| FloatRect destRect(FloatPoint(), size); |
| buf->context().drawImage(image, destRect, srcRect); |
| return buf->copyImage(ImageBuffer::fastCopyImageMode()); |
| } |
| |
| void WebGLRenderingContextBase::texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Denum format, GC3Denum type, HTMLImageElement* image, ExceptionCode& ec) |
| { |
| ec = 0; |
| if (isContextLostOrPending() || !validateHTMLImageElement("texImage2D", image, ec)) |
| return; |
| |
| RefPtr<Image> imageForRender = image->cachedImage()->imageForRenderer(image->renderer()); |
| if (!imageForRender) |
| return; |
| |
| if (imageForRender->isSVGImage()) |
| imageForRender = drawImageIntoBuffer(*imageForRender, image->width(), image->height(), 1); |
| |
| if (!imageForRender || !validateTexFunc("texImage2D", TexImage, SourceHTMLImageElement, target, level, internalformat, imageForRender->width(), imageForRender->height(), 0, format, type, 0, 0)) |
| return; |
| |
| texImage2DImpl(target, level, internalformat, format, type, imageForRender.get(), GraphicsContext3D::HtmlDomImage, m_unpackFlipY, m_unpackPremultiplyAlpha, ec); |
| } |
| |
| void WebGLRenderingContextBase::texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Denum format, GC3Denum type, HTMLCanvasElement* canvas, ExceptionCode& ec) |
| { |
| ec = 0; |
| if (isContextLostOrPending() || !validateHTMLCanvasElement("texImage2D", canvas, ec) || !validateTexFunc("texImage2D", TexImage, SourceHTMLCanvasElement, target, level, internalformat, canvas->width(), canvas->height(), 0, format, type, 0, 0)) |
| return; |
| |
| WebGLTexture* texture = validateTextureBinding("texImage2D", target, true); |
| // If possible, copy from the canvas element directly to the texture |
| // via the GPU, without a read-back to system memory. |
| // |
| // FIXME: restriction of (RGB || RGBA)/UNSIGNED_BYTE should be lifted when |
| // ImageBuffer::copyToPlatformTexture implementations are fully functional. |
| if (texture |
| && (format == GraphicsContext3D::RGB || format == GraphicsContext3D::RGBA) |
| && type == GraphicsContext3D::UNSIGNED_BYTE |
| && (texture->getType(target, level) == GraphicsContext3D::UNSIGNED_BYTE || !texture->isValid(target, level))) { |
| ImageBuffer* buffer = canvas->buffer(); |
| if (buffer && buffer->copyToPlatformTexture(*m_context.get(), target, texture->object(), internalformat, m_unpackPremultiplyAlpha, m_unpackFlipY)) { |
| texture->setLevelInfo(target, level, internalformat, canvas->width(), canvas->height(), type); |
| return; |
| } |
| } |
| |
| RefPtr<ImageData> imageData = canvas->getImageData(); |
| if (imageData) |
| texImage2D(target, level, internalformat, format, type, imageData.get(), ec); |
| else |
| texImage2DImpl(target, level, internalformat, format, type, canvas->copiedImage(), GraphicsContext3D::HtmlDomCanvas, m_unpackFlipY, m_unpackPremultiplyAlpha, ec); |
| } |
| |
| #if ENABLE(VIDEO) |
| PassRefPtr<Image> WebGLRenderingContextBase::videoFrameToImage(HTMLVideoElement* video, BackingStoreCopy backingStoreCopy, ExceptionCode&) |
| { |
| IntSize size(video->videoWidth(), video->videoHeight()); |
| ImageBuffer* buf = m_generatedImageCache.imageBuffer(size); |
| if (!buf) { |
| synthesizeGLError(GraphicsContext3D::OUT_OF_MEMORY, "texImage2D", "out of memory"); |
| return nullptr; |
| } |
| FloatRect destRect(0, 0, size.width(), size.height()); |
| // FIXME: Turn this into a GPU-GPU texture copy instead of CPU readback. |
| video->paintCurrentFrameInContext(buf->context(), destRect); |
| return buf->copyImage(backingStoreCopy); |
| } |
| |
| void WebGLRenderingContextBase::texImage2D(GC3Denum target, GC3Dint level, GC3Denum internalformat, |
| GC3Denum format, GC3Denum type, HTMLVideoElement* video, ExceptionCode& ec) |
| { |
| ec = 0; |
| if (isContextLostOrPending() || !validateHTMLVideoElement("texImage2D", video, ec) |
| || !validateTexFunc("texImage2D", TexImage, SourceHTMLVideoElement, target, level, internalformat, video->videoWidth(), video->videoHeight(), 0, format, type, 0, 0)) |
| return; |
| |
| // Go through the fast path doing a GPU-GPU textures copy without a readback to system memory if possible. |
| // Otherwise, it will fall back to the normal SW path. |
| // FIXME: The current restrictions require that format shoud be RGB or RGBA, |
| // type should be UNSIGNED_BYTE and level should be 0. It may be lifted in the future. |
| WebGLTexture* texture = validateTextureBinding("texImage2D", target, true); |
| if (GraphicsContext3D::TEXTURE_2D == target && texture |
| && (format == GraphicsContext3D::RGB || format == GraphicsContext3D::RGBA) |
| && type == GraphicsContext3D::UNSIGNED_BYTE |
| && (texture->getType(target, level) == GraphicsContext3D::UNSIGNED_BYTE || !texture->isValid(target, level)) |
| && !level) { |
| if (video->copyVideoTextureToPlatformTexture(m_context.get(), texture->object(), level, type, internalformat, m_unpackPremultiplyAlpha, m_unpackFlipY)) { |
| texture->setLevelInfo(target, level, internalformat, video->videoWidth(), video->videoHeight(), type); |
| return; |
| } |
| } |
| |
| // Normal pure SW path. |
| RefPtr<Image> image = videoFrameToImage(video, ImageBuffer::fastCopyImageMode(), ec); |
| if (!image) |
| return; |
| texImage2DImpl(target, level, internalformat, format, type, image.get(), GraphicsContext3D::HtmlDomVideo, m_unpackFlipY, m_unpackPremultiplyAlpha, ec); |
| } |
| #endif |
| |
| void WebGLRenderingContextBase::texParameter(GC3Denum target, GC3Denum pname, GC3Dfloat paramf, GC3Dint parami, bool isFloat) |
| { |
| if (isContextLostOrPending()) |
| return; |
| WebGLTexture* tex = validateTextureBinding("texParameter", target, false); |
| if (!tex) |
| return; |
| switch (pname) { |
| case GraphicsContext3D::TEXTURE_MIN_FILTER: |
| case GraphicsContext3D::TEXTURE_MAG_FILTER: |
| break; |
| case GraphicsContext3D::TEXTURE_WRAP_S: |
| case GraphicsContext3D::TEXTURE_WRAP_T: |
| if ((isFloat && paramf != GraphicsContext3D::CLAMP_TO_EDGE && paramf != GraphicsContext3D::MIRRORED_REPEAT && paramf != GraphicsContext3D::REPEAT) |
| || (!isFloat && parami != GraphicsContext3D::CLAMP_TO_EDGE && parami != GraphicsContext3D::MIRRORED_REPEAT && parami != GraphicsContext3D::REPEAT)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "texParameter", "invalid parameter"); |
| return; |
| } |
| break; |
| case Extensions3D::TEXTURE_MAX_ANISOTROPY_EXT: // EXT_texture_filter_anisotropic |
| if (!m_extTextureFilterAnisotropic) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "texParameter", "invalid parameter, EXT_texture_filter_anisotropic not enabled"); |
| return; |
| } |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "texParameter", "invalid parameter name"); |
| return; |
| } |
| if (isFloat) { |
| tex->setParameterf(pname, paramf); |
| m_context->texParameterf(target, pname, paramf); |
| } else { |
| tex->setParameteri(pname, parami); |
| m_context->texParameteri(target, pname, parami); |
| } |
| } |
| |
| void WebGLRenderingContextBase::texParameterf(GC3Denum target, GC3Denum pname, GC3Dfloat param) |
| { |
| texParameter(target, pname, param, 0, true); |
| } |
| |
| void WebGLRenderingContextBase::texParameteri(GC3Denum target, GC3Denum pname, GC3Dint param) |
| { |
| texParameter(target, pname, 0, param, false); |
| } |
| |
| void WebGLRenderingContextBase::uniform1f(const WebGLUniformLocation* location, GC3Dfloat x, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !location) |
| return; |
| |
| if (location->program() != m_currentProgram) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform1f", "location not for current program"); |
| return; |
| } |
| |
| m_context->uniform1f(location->location(), x); |
| } |
| |
| void WebGLRenderingContextBase::uniform1fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform1fv", location, v, 1)) |
| return; |
| |
| m_context->uniform1fv(location->location(), v->length(), v->data()); |
| } |
| |
| void WebGLRenderingContextBase::uniform1fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform1fv", location, v, size, 1)) |
| return; |
| |
| m_context->uniform1fv(location->location(), size, v); |
| } |
| |
| void WebGLRenderingContextBase::uniform1i(const WebGLUniformLocation* location, GC3Dint x, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !location) |
| return; |
| |
| if (location->program() != m_currentProgram) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform1i", "location not for current program"); |
| return; |
| } |
| |
| if ((location->type() == GraphicsContext3D::SAMPLER_2D || location->type() == GraphicsContext3D::SAMPLER_CUBE) && x >= (int)m_textureUnits.size()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "uniform1i", "invalid texture unit"); |
| return; |
| } |
| |
| m_context->uniform1i(location->location(), x); |
| } |
| |
| void WebGLRenderingContextBase::uniform1iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform1iv", location, v, 1)) |
| return; |
| |
| if (location->type() == GraphicsContext3D::SAMPLER_2D || location->type() == GraphicsContext3D::SAMPLER_CUBE) |
| for (unsigned i = 0; i < v->length(); ++i) { |
| if (v->data()[i] >= static_cast<int>(m_textureUnits.size())) { |
| LOG(WebGL, "Texture unit size=%zu, v[%d]=%d. Location type = %04X.", m_textureUnits.size(), i, v->data()[i], location->type()); |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "uniform1iv", "invalid texture unit"); |
| return; |
| } |
| } |
| |
| m_context->uniform1iv(location->location(), v->length(), v->data()); |
| } |
| |
| void WebGLRenderingContextBase::uniform1iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform1iv", location, v, size, 1)) |
| return; |
| |
| if (location->type() == GraphicsContext3D::SAMPLER_2D || location->type() == GraphicsContext3D::SAMPLER_CUBE) |
| for (unsigned i = 0; i < static_cast<unsigned>(size); ++i) { |
| if (((GC3Dint*)v)[i] >= static_cast<int>(m_textureUnits.size())) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "uniform1iv", "invalid texture unit"); |
| return; |
| } |
| } |
| |
| m_context->uniform1iv(location->location(), size, v); |
| } |
| |
| void WebGLRenderingContextBase::uniform2f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !location) |
| return; |
| |
| if (location->program() != m_currentProgram) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform2f", "location not for current program"); |
| return; |
| } |
| |
| m_context->uniform2f(location->location(), x, y); |
| } |
| |
| void WebGLRenderingContextBase::uniform2fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform2fv", location, v, 2)) |
| return; |
| |
| m_context->uniform2fv(location->location(), v->length() / 2, v->data()); |
| } |
| |
| void WebGLRenderingContextBase::uniform2fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform2fv", location, v, size, 2)) |
| return; |
| |
| m_context->uniform2fv(location->location(), size / 2, v); |
| } |
| |
| void WebGLRenderingContextBase::uniform2i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !location) |
| return; |
| |
| if (location->program() != m_currentProgram) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform2i", "location not for current program"); |
| return; |
| } |
| |
| m_context->uniform2i(location->location(), x, y); |
| } |
| |
| void WebGLRenderingContextBase::uniform2iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform2iv", location, v, 2)) |
| return; |
| |
| m_context->uniform2iv(location->location(), v->length() / 2, v->data()); |
| } |
| |
| void WebGLRenderingContextBase::uniform2iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform2iv", location, v, size, 2)) |
| return; |
| |
| m_context->uniform2iv(location->location(), size / 2, v); |
| } |
| |
| void WebGLRenderingContextBase::uniform3f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !location) |
| return; |
| |
| if (location->program() != m_currentProgram) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform3f", "location not for current program"); |
| return; |
| } |
| |
| m_context->uniform3f(location->location(), x, y, z); |
| } |
| |
| void WebGLRenderingContextBase::uniform3fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform3fv", location, v, 3)) |
| return; |
| |
| m_context->uniform3fv(location->location(), v->length() / 3, v->data()); |
| } |
| |
| void WebGLRenderingContextBase::uniform3fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform3fv", location, v, size, 3)) |
| return; |
| |
| m_context->uniform3fv(location->location(), size / 3, v); |
| } |
| |
| void WebGLRenderingContextBase::uniform3i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y, GC3Dint z, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !location) |
| return; |
| |
| if (location->program() != m_currentProgram) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform3i", "location not for current program"); |
| return; |
| } |
| |
| m_context->uniform3i(location->location(), x, y, z); |
| } |
| |
| void WebGLRenderingContextBase::uniform3iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform3iv", location, v, 3)) |
| return; |
| |
| m_context->uniform3iv(location->location(), v->length() / 3, v->data()); |
| } |
| |
| void WebGLRenderingContextBase::uniform3iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform3iv", location, v, size, 3)) |
| return; |
| |
| m_context->uniform3iv(location->location(), size / 3, v); |
| } |
| |
| void WebGLRenderingContextBase::uniform4f(const WebGLUniformLocation* location, GC3Dfloat x, GC3Dfloat y, GC3Dfloat z, GC3Dfloat w, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !location) |
| return; |
| |
| if (location->program() != m_currentProgram) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform4f", "location not for current program"); |
| return; |
| } |
| |
| m_context->uniform4f(location->location(), x, y, z, w); |
| } |
| |
| void WebGLRenderingContextBase::uniform4fv(const WebGLUniformLocation* location, Float32Array* v, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform4fv", location, v, 4)) |
| return; |
| |
| m_context->uniform4fv(location->location(), v->length() / 4, v->data()); |
| } |
| |
| void WebGLRenderingContextBase::uniform4fv(const WebGLUniformLocation* location, GC3Dfloat* v, GC3Dsizei size, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform4fv", location, v, size, 4)) |
| return; |
| |
| m_context->uniform4fv(location->location(), size / 4, v); |
| } |
| |
| void WebGLRenderingContextBase::uniform4i(const WebGLUniformLocation* location, GC3Dint x, GC3Dint y, GC3Dint z, GC3Dint w, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !location) |
| return; |
| |
| if (location->program() != m_currentProgram) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "uniform4i", "location not for current program"); |
| return; |
| } |
| |
| m_context->uniform4i(location->location(), x, y, z, w); |
| } |
| |
| void WebGLRenderingContextBase::uniform4iv(const WebGLUniformLocation* location, Int32Array* v, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform4iv", location, v, 4)) |
| return; |
| |
| m_context->uniform4iv(location->location(), v->length() / 4, v->data()); |
| } |
| |
| void WebGLRenderingContextBase::uniform4iv(const WebGLUniformLocation* location, GC3Dint* v, GC3Dsizei size, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformParameters("uniform4iv", location, v, size, 4)) |
| return; |
| |
| m_context->uniform4iv(location->location(), size / 4, v); |
| } |
| |
| void WebGLRenderingContextBase::uniformMatrix2fv(const WebGLUniformLocation* location, GC3Dboolean transpose, Float32Array* v, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformMatrixParameters("uniformMatrix2fv", location, transpose, v, 4)) |
| return; |
| m_context->uniformMatrix2fv(location->location(), v->length() / 4, transpose, v->data()); |
| } |
| |
| void WebGLRenderingContextBase::uniformMatrix2fv(const WebGLUniformLocation* location, GC3Dboolean transpose, GC3Dfloat* v, GC3Dsizei size, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformMatrixParameters("uniformMatrix2fv", location, transpose, v, size, 4)) |
| return; |
| m_context->uniformMatrix2fv(location->location(), size / 4, transpose, v); |
| } |
| |
| void WebGLRenderingContextBase::uniformMatrix3fv(const WebGLUniformLocation* location, GC3Dboolean transpose, Float32Array* v, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformMatrixParameters("uniformMatrix3fv", location, transpose, v, 9)) |
| return; |
| m_context->uniformMatrix3fv(location->location(), v->length() / 9, transpose, v->data()); |
| } |
| |
| void WebGLRenderingContextBase::uniformMatrix3fv(const WebGLUniformLocation* location, GC3Dboolean transpose, GC3Dfloat* v, GC3Dsizei size, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformMatrixParameters("uniformMatrix3fv", location, transpose, v, size, 9)) |
| return; |
| m_context->uniformMatrix3fv(location->location(), size / 9, transpose, v); |
| } |
| |
| void WebGLRenderingContextBase::uniformMatrix4fv(const WebGLUniformLocation* location, GC3Dboolean transpose, Float32Array* v, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformMatrixParameters("uniformMatrix4fv", location, transpose, v, 16)) |
| return; |
| m_context->uniformMatrix4fv(location->location(), v->length() / 16, transpose, v->data()); |
| } |
| |
| void WebGLRenderingContextBase::uniformMatrix4fv(const WebGLUniformLocation* location, GC3Dboolean transpose, GC3Dfloat* v, GC3Dsizei size, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateUniformMatrixParameters("uniformMatrix4fv", location, transpose, v, size, 16)) |
| return; |
| m_context->uniformMatrix4fv(location->location(), size / 16, transpose, v); |
| } |
| |
| void WebGLRenderingContextBase::useProgram(WebGLProgram* program, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| bool deleted; |
| if (!checkObjectToBeBound("useProgram", program, deleted)) |
| return; |
| if (deleted) |
| program = 0; |
| if (program && !program->getLinkStatus()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "useProgram", "program not valid"); |
| return; |
| } |
| if (m_currentProgram != program) { |
| if (m_currentProgram) |
| m_currentProgram->onDetached(graphicsContext3D()); |
| m_currentProgram = program; |
| m_context->useProgram(objectOrZero(program)); |
| if (program) |
| program->onAttached(); |
| } |
| } |
| |
| void WebGLRenderingContextBase::validateProgram(WebGLProgram* program, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending() || !validateWebGLObject("validateProgram", program)) |
| return; |
| m_context->validateProgram(objectOrZero(program)); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib1f(GC3Duint index, GC3Dfloat v0) |
| { |
| vertexAttribfImpl("vertexAttrib1f", index, 1, v0, 0.0f, 0.0f, 1.0f); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib1fv(GC3Duint index, Float32Array* v) |
| { |
| vertexAttribfvImpl("vertexAttrib1fv", index, v, 1); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib1fv(GC3Duint index, GC3Dfloat* v, GC3Dsizei size) |
| { |
| vertexAttribfvImpl("vertexAttrib1fv", index, v, size, 1); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib2f(GC3Duint index, GC3Dfloat v0, GC3Dfloat v1) |
| { |
| vertexAttribfImpl("vertexAttrib2f", index, 2, v0, v1, 0.0f, 1.0f); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib2fv(GC3Duint index, Float32Array* v) |
| { |
| vertexAttribfvImpl("vertexAttrib2fv", index, v, 2); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib2fv(GC3Duint index, GC3Dfloat* v, GC3Dsizei size) |
| { |
| vertexAttribfvImpl("vertexAttrib2fv", index, v, size, 2); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib3f(GC3Duint index, GC3Dfloat v0, GC3Dfloat v1, GC3Dfloat v2) |
| { |
| vertexAttribfImpl("vertexAttrib3f", index, 3, v0, v1, v2, 1.0f); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib3fv(GC3Duint index, Float32Array* v) |
| { |
| vertexAttribfvImpl("vertexAttrib3fv", index, v, 3); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib3fv(GC3Duint index, GC3Dfloat* v, GC3Dsizei size) |
| { |
| vertexAttribfvImpl("vertexAttrib3fv", index, v, size, 3); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib4f(GC3Duint index, GC3Dfloat v0, GC3Dfloat v1, GC3Dfloat v2, GC3Dfloat v3) |
| { |
| vertexAttribfImpl("vertexAttrib4f", index, 4, v0, v1, v2, v3); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib4fv(GC3Duint index, Float32Array* v) |
| { |
| vertexAttribfvImpl("vertexAttrib4fv", index, v, 4); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttrib4fv(GC3Duint index, GC3Dfloat* v, GC3Dsizei size) |
| { |
| vertexAttribfvImpl("vertexAttrib4fv", index, v, size, 4); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttribPointer(GC3Duint index, GC3Dint size, GC3Denum type, GC3Dboolean normalized, GC3Dsizei stride, long long offset, ExceptionCode& ec) |
| { |
| UNUSED_PARAM(ec); |
| if (isContextLostOrPending()) |
| return; |
| switch (type) { |
| case GraphicsContext3D::BYTE: |
| case GraphicsContext3D::UNSIGNED_BYTE: |
| case GraphicsContext3D::SHORT: |
| case GraphicsContext3D::UNSIGNED_SHORT: |
| case GraphicsContext3D::FLOAT: |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "vertexAttribPointer", "invalid type"); |
| return; |
| } |
| if (index >= m_maxVertexAttribs) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "vertexAttribPointer", "index out of range"); |
| return; |
| } |
| if (size < 1 || size > 4 || stride < 0 || stride > 255 || offset < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "vertexAttribPointer", "bad size, stride or offset"); |
| return; |
| } |
| if (!m_boundArrayBuffer) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "vertexAttribPointer", "no bound ARRAY_BUFFER"); |
| return; |
| } |
| // Determine the number of elements the bound buffer can hold, given the offset, size, type and stride |
| unsigned int typeSize = sizeInBytes(type); |
| if (!typeSize) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "vertexAttribPointer", "invalid type"); |
| return; |
| } |
| if ((stride % typeSize) || (static_cast<GC3Dintptr>(offset) % typeSize)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "vertexAttribPointer", "stride or offset not valid for type"); |
| return; |
| } |
| GC3Dsizei bytesPerElement = size * typeSize; |
| |
| m_boundVertexArrayObject->setVertexAttribState(index, bytesPerElement, size, type, normalized, stride, static_cast<GC3Dintptr>(offset), m_boundArrayBuffer); |
| m_context->vertexAttribPointer(index, size, type, normalized, stride, static_cast<GC3Dintptr>(offset)); |
| } |
| |
| void WebGLRenderingContextBase::viewport(GC3Dint x, GC3Dint y, GC3Dsizei width, GC3Dsizei height) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (!validateSize("viewport", width, height)) |
| return; |
| m_context->viewport(x, y, width, height); |
| } |
| |
| void WebGLRenderingContextBase::forceLostContext(WebGLRenderingContextBase::LostContextMode mode) |
| { |
| if (isContextLostOrPending()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "loseContext", "context already lost"); |
| return; |
| } |
| |
| m_contextGroup->loseContextGroup(mode); |
| } |
| |
| void WebGLRenderingContextBase::loseContextImpl(WebGLRenderingContextBase::LostContextMode mode) |
| { |
| if (isContextLost()) |
| return; |
| |
| m_contextLost = true; |
| m_contextLostMode = mode; |
| |
| if (mode == RealLostContext) { |
| // Inform the embedder that a lost context was received. In response, the embedder might |
| // decide to take action such as asking the user for permission to use WebGL again. |
| if (Frame* frame = canvas()->document().frame()) |
| frame->loader().client().didLoseWebGLContext(m_context->getExtensions()->getGraphicsResetStatusARB()); |
| } |
| |
| detachAndRemoveAllObjects(); |
| |
| // There is no direct way to clear errors from a GL implementation and |
| // looping until getError() becomes NO_ERROR might cause an infinite loop if |
| // the driver or context implementation had a bug. So, loop a reasonably |
| // large number of times to clear any existing errors. |
| for (int i = 0; i < 100; ++i) { |
| if (m_context->getError() == GraphicsContext3D::NO_ERROR) |
| break; |
| } |
| ConsoleDisplayPreference display = (mode == RealLostContext) ? DisplayInConsole: DontDisplayInConsole; |
| synthesizeGLError(GraphicsContext3D::CONTEXT_LOST_WEBGL, "loseContext", "context lost", display); |
| |
| // Don't allow restoration unless the context lost event has both been |
| // dispatched and its default behavior prevented. |
| m_restoreAllowed = false; |
| |
| // Always defer the dispatch of the context lost event, to implement |
| // the spec behavior of queueing a task. |
| m_dispatchContextLostEventTimer.startOneShot(0); |
| } |
| |
| void WebGLRenderingContextBase::forceRestoreContext() |
| { |
| if (!isContextLostOrPending()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "restoreContext", "context not lost"); |
| return; |
| } |
| |
| if (!m_restoreAllowed) { |
| if (m_contextLostMode == SyntheticLostContext) |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "restoreContext", "context restoration not allowed"); |
| return; |
| } |
| |
| if (!m_restoreTimer.isActive()) |
| m_restoreTimer.startOneShot(0); |
| } |
| |
| PlatformLayer* WebGLRenderingContextBase::platformLayer() const |
| { |
| return (!isContextLost() && !m_isPendingPolicyResolution) ? m_context->platformLayer() : 0; |
| } |
| |
| void WebGLRenderingContextBase::removeSharedObject(WebGLSharedObject* object) |
| { |
| if (m_isPendingPolicyResolution) |
| return; |
| |
| m_contextGroup->removeObject(object); |
| } |
| |
| void WebGLRenderingContextBase::addSharedObject(WebGLSharedObject* object) |
| { |
| if (m_isPendingPolicyResolution) |
| return; |
| |
| ASSERT(!isContextLost()); |
| m_contextGroup->addObject(object); |
| } |
| |
| void WebGLRenderingContextBase::removeContextObject(WebGLContextObject* object) |
| { |
| if (m_isPendingPolicyResolution) |
| return; |
| |
| m_contextObjects.remove(object); |
| } |
| |
| void WebGLRenderingContextBase::addContextObject(WebGLContextObject* object) |
| { |
| if (m_isPendingPolicyResolution) |
| return; |
| |
| ASSERT(!isContextLost()); |
| m_contextObjects.add(object); |
| } |
| |
| void WebGLRenderingContextBase::detachAndRemoveAllObjects() |
| { |
| if (m_isPendingPolicyResolution) |
| return; |
| |
| while (m_contextObjects.size() > 0) { |
| HashSet<WebGLContextObject*>::iterator it = m_contextObjects.begin(); |
| (*it)->detachContext(); |
| } |
| } |
| |
| bool WebGLRenderingContextBase::hasPendingActivity() const |
| { |
| return false; |
| } |
| |
| void WebGLRenderingContextBase::stop() |
| { |
| if (!isContextLost() && !m_isPendingPolicyResolution) { |
| forceLostContext(SyntheticLostContext); |
| destroyGraphicsContext3D(); |
| } |
| } |
| |
| const char* WebGLRenderingContextBase::activeDOMObjectName() const |
| { |
| return "WebGLRenderingContext"; |
| } |
| |
| bool WebGLRenderingContextBase::canSuspendForPageCache() const |
| { |
| // FIXME: We should try and do better here. |
| return false; |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getBooleanParameter(GC3Denum pname) |
| { |
| GC3Dboolean value = 0; |
| m_context->getBooleanv(pname, &value); |
| return WebGLGetInfo(static_cast<bool>(value)); |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getBooleanArrayParameter(GC3Denum pname) |
| { |
| if (pname != GraphicsContext3D::COLOR_WRITEMASK) { |
| notImplemented(); |
| return WebGLGetInfo(0, 0); |
| } |
| GC3Dboolean value[4] = {0}; |
| m_context->getBooleanv(pname, value); |
| bool boolValue[4]; |
| for (int ii = 0; ii < 4; ++ii) |
| boolValue[ii] = static_cast<bool>(value[ii]); |
| return WebGLGetInfo(boolValue, 4); |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getFloatParameter(GC3Denum pname) |
| { |
| GC3Dfloat value = 0; |
| m_context->getFloatv(pname, &value); |
| return WebGLGetInfo(value); |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getIntParameter(GC3Denum pname) |
| { |
| GC3Dint value = 0; |
| m_context->getIntegerv(pname, &value); |
| return WebGLGetInfo(value); |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getUnsignedIntParameter(GC3Denum pname) |
| { |
| GC3Dint value = 0; |
| m_context->getIntegerv(pname, &value); |
| return WebGLGetInfo(static_cast<unsigned int>(value)); |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getInt64Parameter(GC3Denum pname) |
| { |
| GC3Dint64 value = 0; |
| m_context->getInteger64v(pname, &value); |
| return WebGLGetInfo(value); |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getWebGLFloatArrayParameter(GC3Denum pname) |
| { |
| GC3Dfloat value[4] = {0}; |
| m_context->getFloatv(pname, value); |
| unsigned length = 0; |
| switch (pname) { |
| case GraphicsContext3D::ALIASED_POINT_SIZE_RANGE: |
| case GraphicsContext3D::ALIASED_LINE_WIDTH_RANGE: |
| case GraphicsContext3D::DEPTH_RANGE: |
| length = 2; |
| break; |
| case GraphicsContext3D::BLEND_COLOR: |
| case GraphicsContext3D::COLOR_CLEAR_VALUE: |
| length = 4; |
| break; |
| default: |
| notImplemented(); |
| } |
| return WebGLGetInfo(Float32Array::create(value, length).release()); |
| } |
| |
| WebGLGetInfo WebGLRenderingContextBase::getWebGLIntArrayParameter(GC3Denum pname) |
| { |
| GC3Dint value[4] = {0}; |
| m_context->getIntegerv(pname, value); |
| unsigned length = 0; |
| switch (pname) { |
| case GraphicsContext3D::MAX_VIEWPORT_DIMS: |
| length = 2; |
| break; |
| case GraphicsContext3D::SCISSOR_BOX: |
| case GraphicsContext3D::VIEWPORT: |
| length = 4; |
| break; |
| default: |
| notImplemented(); |
| } |
| return WebGLGetInfo(Int32Array::create(value, length).release()); |
| } |
| |
| void WebGLRenderingContextBase::checkTextureCompleteness(const char* functionName, bool prepareToDraw) |
| { |
| bool resetActiveUnit = false; |
| WebGLTexture::TextureExtensionFlag extensions = static_cast<WebGLTexture::TextureExtensionFlag>((m_oesTextureFloatLinear ? WebGLTexture::TextureExtensionFloatLinearEnabled : 0) | (m_oesTextureHalfFloatLinear ? WebGLTexture::TextureExtensionHalfFloatLinearEnabled : 0)); |
| |
| for (unsigned ii = 0; ii < m_textureUnits.size(); ++ii) { |
| if ((m_textureUnits[ii].texture2DBinding && m_textureUnits[ii].texture2DBinding->needToUseBlackTexture(extensions)) |
| || (m_textureUnits[ii].textureCubeMapBinding && m_textureUnits[ii].textureCubeMapBinding->needToUseBlackTexture(extensions))) { |
| if (ii != m_activeTextureUnit) { |
| m_context->activeTexture(ii + GraphicsContext3D::TEXTURE0); |
| resetActiveUnit = true; |
| } else if (resetActiveUnit) { |
| m_context->activeTexture(ii + GraphicsContext3D::TEXTURE0); |
| resetActiveUnit = false; |
| } |
| WebGLTexture* tex2D; |
| WebGLTexture* texCubeMap; |
| if (prepareToDraw) { |
| String msg(String("texture bound to texture unit ") + String::number(ii) |
| + " is not renderable. It maybe non-power-of-2 and have incompatible texture filtering or is not 'texture complete'," |
| + " or it is a float/half-float type with linear filtering and without the relevant float/half-float linear extension enabled."); |
| printGLWarningToConsole(functionName, msg.utf8().data()); |
| tex2D = m_blackTexture2D.get(); |
| texCubeMap = m_blackTextureCubeMap.get(); |
| } else { |
| tex2D = m_textureUnits[ii].texture2DBinding.get(); |
| texCubeMap = m_textureUnits[ii].textureCubeMapBinding.get(); |
| } |
| if (m_textureUnits[ii].texture2DBinding && m_textureUnits[ii].texture2DBinding->needToUseBlackTexture(extensions)) |
| m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, objectOrZero(tex2D)); |
| if (m_textureUnits[ii].textureCubeMapBinding && m_textureUnits[ii].textureCubeMapBinding->needToUseBlackTexture(extensions)) |
| m_context->bindTexture(GraphicsContext3D::TEXTURE_CUBE_MAP, objectOrZero(texCubeMap)); |
| } |
| } |
| if (resetActiveUnit) |
| m_context->activeTexture(m_activeTextureUnit + GraphicsContext3D::TEXTURE0); |
| } |
| |
| void WebGLRenderingContextBase::createFallbackBlackTextures1x1() |
| { |
| unsigned char black[] = {0, 0, 0, 255}; |
| m_blackTexture2D = createTexture(); |
| m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, m_blackTexture2D->object()); |
| m_context->texImage2D(GraphicsContext3D::TEXTURE_2D, 0, GraphicsContext3D::RGBA, 1, 1, |
| 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black); |
| m_context->bindTexture(GraphicsContext3D::TEXTURE_2D, 0); |
| m_blackTextureCubeMap = createTexture(); |
| m_context->bindTexture(GraphicsContext3D::TEXTURE_CUBE_MAP, m_blackTextureCubeMap->object()); |
| m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_X, 0, GraphicsContext3D::RGBA, 1, 1, |
| 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black); |
| m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_X, 0, GraphicsContext3D::RGBA, 1, 1, |
| 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black); |
| m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Y, 0, GraphicsContext3D::RGBA, 1, 1, |
| 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black); |
| m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, GraphicsContext3D::RGBA, 1, 1, |
| 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black); |
| m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Z, 0, GraphicsContext3D::RGBA, 1, 1, |
| 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black); |
| m_context->texImage2D(GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, GraphicsContext3D::RGBA, 1, 1, |
| 0, GraphicsContext3D::RGBA, GraphicsContext3D::UNSIGNED_BYTE, black); |
| m_context->bindTexture(GraphicsContext3D::TEXTURE_CUBE_MAP, 0); |
| } |
| |
| bool WebGLRenderingContextBase::isTexInternalFormatColorBufferCombinationValid(GC3Denum texInternalFormat, |
| GC3Denum colorBufferFormat) |
| { |
| unsigned need = GraphicsContext3D::getChannelBitsByFormat(texInternalFormat); |
| unsigned have = GraphicsContext3D::getChannelBitsByFormat(colorBufferFormat); |
| return (need & have) == need; |
| } |
| |
| GC3Denum WebGLRenderingContextBase::getBoundFramebufferColorFormat() |
| { |
| if (m_framebufferBinding && m_framebufferBinding->object()) |
| return m_framebufferBinding->getColorBufferFormat(); |
| if (m_attributes.alpha) |
| return GraphicsContext3D::RGBA; |
| return GraphicsContext3D::RGB; |
| } |
| |
| int WebGLRenderingContextBase::getBoundFramebufferWidth() |
| { |
| if (m_framebufferBinding && m_framebufferBinding->object()) |
| return m_framebufferBinding->getColorBufferWidth(); |
| return m_context->getInternalFramebufferSize().width(); |
| } |
| |
| int WebGLRenderingContextBase::getBoundFramebufferHeight() |
| { |
| if (m_framebufferBinding && m_framebufferBinding->object()) |
| return m_framebufferBinding->getColorBufferHeight(); |
| return m_context->getInternalFramebufferSize().height(); |
| } |
| |
| WebGLTexture* WebGLRenderingContextBase::validateTextureBinding(const char* functionName, GC3Denum target, bool useSixEnumsForCubeMap) |
| { |
| WebGLTexture* texture = nullptr; |
| switch (target) { |
| case GraphicsContext3D::TEXTURE_2D: |
| texture = m_textureUnits[m_activeTextureUnit].texture2DBinding.get(); |
| break; |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_X: |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_X: |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Y: |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Y: |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Z: |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Z: |
| if (!useSixEnumsForCubeMap) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid texture target"); |
| return nullptr; |
| } |
| texture = m_textureUnits[m_activeTextureUnit].textureCubeMapBinding.get(); |
| break; |
| case GraphicsContext3D::TEXTURE_CUBE_MAP: |
| if (useSixEnumsForCubeMap) { |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid texture target"); |
| return nullptr; |
| } |
| texture = m_textureUnits[m_activeTextureUnit].textureCubeMapBinding.get(); |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid texture target"); |
| return nullptr; |
| } |
| if (!texture) |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "no texture"); |
| return texture; |
| } |
| |
| bool WebGLRenderingContextBase::validateLocationLength(const char* functionName, const String& string) |
| { |
| const unsigned maxWebGLLocationLength = 256; |
| if (string.length() > maxWebGLLocationLength) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "location length > 256"); |
| return false; |
| } |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateSize(const char* functionName, GC3Dint x, GC3Dint y) |
| { |
| if (x < 0 || y < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "size < 0"); |
| return false; |
| } |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateString(const char* functionName, const String& string) |
| { |
| for (size_t i = 0; i < string.length(); ++i) { |
| if (!validateCharacter(string[i])) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "string not ASCII"); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateTexFuncLevel(const char* functionName, GC3Denum target, GC3Dint level) |
| { |
| if (level < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "level < 0"); |
| return false; |
| } |
| switch (target) { |
| case GraphicsContext3D::TEXTURE_2D: |
| if (level >= m_maxTextureLevel) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "level out of range"); |
| return false; |
| } |
| break; |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_X: |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_X: |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Y: |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Y: |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_POSITIVE_Z: |
| case GraphicsContext3D::TEXTURE_CUBE_MAP_NEGATIVE_Z: |
| if (level >= m_maxCubeMapTextureLevel) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "level out of range"); |
| return false; |
| } |
| break; |
| } |
| // This function only checks if level is legal, so we return true and don't |
| // generate INVALID_ENUM if target is illegal. |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateCompressedTexFormat(GC3Denum format) |
| { |
| return m_compressedTextureFormats.contains(format); |
| } |
| |
| bool WebGLRenderingContextBase::validateCompressedTexFuncData(const char* functionName, |
| GC3Dsizei width, GC3Dsizei height, |
| GC3Denum format, ArrayBufferView* pixels) |
| { |
| if (!pixels) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no pixels"); |
| return false; |
| } |
| if (width < 0 || height < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "width or height < 0"); |
| return false; |
| } |
| |
| unsigned int bytesRequired = 0; |
| |
| switch (format) { |
| case Extensions3D::COMPRESSED_RGB_S3TC_DXT1_EXT: |
| case Extensions3D::COMPRESSED_RGBA_S3TC_DXT1_EXT: |
| case Extensions3D::COMPRESSED_ATC_RGB_AMD: |
| { |
| const int kBlockSize = 8; |
| const int kBlockWidth = 4; |
| const int kBlockHeight = 4; |
| int numBlocksAcross = (width + kBlockWidth - 1) / kBlockWidth; |
| int numBlocksDown = (height + kBlockHeight - 1) / kBlockHeight; |
| bytesRequired = numBlocksAcross * numBlocksDown * kBlockSize; |
| } |
| break; |
| case Extensions3D::COMPRESSED_RGBA_S3TC_DXT3_EXT: |
| case Extensions3D::COMPRESSED_RGBA_S3TC_DXT5_EXT: |
| case Extensions3D::COMPRESSED_ATC_RGBA_EXPLICIT_ALPHA_AMD: |
| case Extensions3D::COMPRESSED_ATC_RGBA_INTERPOLATED_ALPHA_AMD: |
| { |
| const int kBlockSize = 16; |
| const int kBlockWidth = 4; |
| const int kBlockHeight = 4; |
| int numBlocksAcross = (width + kBlockWidth - 1) / kBlockWidth; |
| int numBlocksDown = (height + kBlockHeight - 1) / kBlockHeight; |
| bytesRequired = numBlocksAcross * numBlocksDown * kBlockSize; |
| } |
| break; |
| case Extensions3D::COMPRESSED_RGB_PVRTC_4BPPV1_IMG: |
| case Extensions3D::COMPRESSED_RGBA_PVRTC_4BPPV1_IMG: |
| { |
| const int kBlockSize = 8; |
| const int kBlockWidth = 8; |
| const int kBlockHeight = 8; |
| bytesRequired = (std::max(width, kBlockWidth) * std::max(height, kBlockHeight) * 4 + 7) / kBlockSize; |
| } |
| break; |
| case Extensions3D::COMPRESSED_RGB_PVRTC_2BPPV1_IMG: |
| case Extensions3D::COMPRESSED_RGBA_PVRTC_2BPPV1_IMG: |
| { |
| const int kBlockSize = 8; |
| const int kBlockWidth = 16; |
| const int kBlockHeight = 8; |
| bytesRequired = (std::max(width, kBlockWidth) * std::max(height, kBlockHeight) * 2 + 7) / kBlockSize; |
| } |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid format"); |
| return false; |
| } |
| |
| if (pixels->byteLength() != bytesRequired) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "length of ArrayBufferView is not correct for dimensions"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateCompressedTexDimensions(const char* functionName, GC3Denum target, GC3Dint level, GC3Dsizei width, GC3Dsizei height, GC3Denum format) |
| { |
| switch (format) { |
| case Extensions3D::COMPRESSED_RGB_S3TC_DXT1_EXT: |
| case Extensions3D::COMPRESSED_RGBA_S3TC_DXT1_EXT: |
| case Extensions3D::COMPRESSED_RGBA_S3TC_DXT3_EXT: |
| case Extensions3D::COMPRESSED_RGBA_S3TC_DXT5_EXT: { |
| const GC3Dsizei kBlockWidth = 4; |
| const GC3Dsizei kBlockHeight = 4; |
| const GC3Dint maxTextureSize = target ? m_maxTextureSize : m_maxCubeMapTextureSize; |
| const GC3Dsizei maxCompressedDimension = maxTextureSize >> level; |
| bool widthValid = (level && width == 1) || (level && width == 2) || (!(width % kBlockWidth) && width <= maxCompressedDimension); |
| bool heightValid = (level && height == 1) || (level && height == 2) || (!(height % kBlockHeight) && height <= maxCompressedDimension); |
| if (!widthValid || !heightValid) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "width or height invalid for level"); |
| return false; |
| } |
| return true; |
| } |
| case Extensions3D::COMPRESSED_RGB_PVRTC_4BPPV1_IMG: |
| case Extensions3D::COMPRESSED_RGB_PVRTC_2BPPV1_IMG: |
| case Extensions3D::COMPRESSED_RGBA_PVRTC_4BPPV1_IMG: |
| case Extensions3D::COMPRESSED_RGBA_PVRTC_2BPPV1_IMG: |
| // Height and width must be powers of 2. |
| if ((width & (width - 1)) || (height & (height - 1))) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "width or height invalid for level"); |
| return false; |
| } |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| bool WebGLRenderingContextBase::validateCompressedTexSubDimensions(const char* functionName, GC3Denum target, GC3Dint level, GC3Dint xoffset, GC3Dint yoffset, |
| GC3Dsizei width, GC3Dsizei height, GC3Denum format, WebGLTexture* tex) |
| { |
| if (xoffset < 0 || yoffset < 0) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "xoffset or yoffset < 0"); |
| return false; |
| } |
| |
| switch (format) { |
| case Extensions3D::COMPRESSED_RGB_S3TC_DXT1_EXT: |
| case Extensions3D::COMPRESSED_RGBA_S3TC_DXT1_EXT: |
| case Extensions3D::COMPRESSED_RGBA_S3TC_DXT3_EXT: |
| case Extensions3D::COMPRESSED_RGBA_S3TC_DXT5_EXT: { |
| const int kBlockWidth = 4; |
| const int kBlockHeight = 4; |
| if ((xoffset % kBlockWidth) || (yoffset % kBlockHeight)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "xoffset or yoffset not multiple of 4"); |
| return false; |
| } |
| if (width - xoffset > tex->getWidth(target, level) |
| || height - yoffset > tex->getHeight(target, level)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "dimensions out of range"); |
| return false; |
| } |
| return validateCompressedTexDimensions(functionName, target, level, width, height, format); |
| } |
| case Extensions3D::COMPRESSED_RGB_PVRTC_4BPPV1_IMG: |
| case Extensions3D::COMPRESSED_RGB_PVRTC_2BPPV1_IMG: |
| case Extensions3D::COMPRESSED_RGBA_PVRTC_4BPPV1_IMG: |
| case Extensions3D::COMPRESSED_RGBA_PVRTC_2BPPV1_IMG: { |
| if (xoffset || yoffset) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "xoffset and yoffset must be zero"); |
| return false; |
| } |
| if (width != tex->getWidth(target, level) |
| || height != tex->getHeight(target, level)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "dimensions must match existing level"); |
| return false; |
| } |
| return validateCompressedTexDimensions(functionName, target, level, width, height, format); |
| } |
| default: |
| return false; |
| } |
| } |
| |
| bool WebGLRenderingContextBase::validateDrawMode(const char* functionName, GC3Denum mode) |
| { |
| switch (mode) { |
| case GraphicsContext3D::POINTS: |
| case GraphicsContext3D::LINE_STRIP: |
| case GraphicsContext3D::LINE_LOOP: |
| case GraphicsContext3D::LINES: |
| case GraphicsContext3D::TRIANGLE_STRIP: |
| case GraphicsContext3D::TRIANGLE_FAN: |
| case GraphicsContext3D::TRIANGLES: |
| return true; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid draw mode"); |
| return false; |
| } |
| } |
| |
| bool WebGLRenderingContextBase::validateStencilSettings(const char* functionName) |
| { |
| if (m_stencilMask != m_stencilMaskBack || m_stencilFuncRef != m_stencilFuncRefBack || m_stencilFuncMask != m_stencilFuncMaskBack) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "front and back stencils settings do not match"); |
| return false; |
| } |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateStencilFunc(const char* functionName, GC3Denum func) |
| { |
| switch (func) { |
| case GraphicsContext3D::NEVER: |
| case GraphicsContext3D::LESS: |
| case GraphicsContext3D::LEQUAL: |
| case GraphicsContext3D::GREATER: |
| case GraphicsContext3D::GEQUAL: |
| case GraphicsContext3D::EQUAL: |
| case GraphicsContext3D::NOTEQUAL: |
| case GraphicsContext3D::ALWAYS: |
| return true; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid function"); |
| return false; |
| } |
| } |
| |
| void WebGLRenderingContextBase::printGLErrorToConsole(const String& message) |
| { |
| if (!m_numGLErrorsToConsoleAllowed) |
| return; |
| |
| --m_numGLErrorsToConsoleAllowed; |
| printWarningToConsole(message); |
| |
| if (!m_numGLErrorsToConsoleAllowed) |
| printWarningToConsole("WebGL: too many errors, no more errors will be reported to the console for this context."); |
| } |
| |
| void WebGLRenderingContextBase::printWarningToConsole(const String& message) |
| { |
| if (!canvas()) |
| return; |
| canvas()->document().addConsoleMessage(MessageSource::Rendering, MessageLevel::Warning, message); |
| } |
| |
| bool WebGLRenderingContextBase::validateBlendFuncFactors(const char* functionName, GC3Denum src, GC3Denum dst) |
| { |
| if (((src == GraphicsContext3D::CONSTANT_COLOR || src == GraphicsContext3D::ONE_MINUS_CONSTANT_COLOR) |
| && (dst == GraphicsContext3D::CONSTANT_ALPHA || dst == GraphicsContext3D::ONE_MINUS_CONSTANT_ALPHA)) |
| || ((dst == GraphicsContext3D::CONSTANT_COLOR || dst == GraphicsContext3D::ONE_MINUS_CONSTANT_COLOR) |
| && (src == GraphicsContext3D::CONSTANT_ALPHA || src == GraphicsContext3D::ONE_MINUS_CONSTANT_ALPHA))) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "incompatible src and dst"); |
| return false; |
| } |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateUniformParameters(const char* functionName, const WebGLUniformLocation* location, Float32Array* v, GC3Dsizei requiredMinSize) |
| { |
| if (!v) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array"); |
| return false; |
| } |
| return validateUniformMatrixParameters(functionName, location, false, v->data(), v->length(), requiredMinSize); |
| } |
| |
| bool WebGLRenderingContextBase::validateUniformParameters(const char* functionName, const WebGLUniformLocation* location, Int32Array* v, GC3Dsizei requiredMinSize) |
| { |
| if (!v) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array"); |
| return false; |
| } |
| return validateUniformMatrixParameters(functionName, location, false, v->data(), v->length(), requiredMinSize); |
| } |
| |
| bool WebGLRenderingContextBase::validateUniformParameters(const char* functionName, const WebGLUniformLocation* location, void* v, GC3Dsizei size, GC3Dsizei requiredMinSize) |
| { |
| return validateUniformMatrixParameters(functionName, location, false, v, size, requiredMinSize); |
| } |
| |
| bool WebGLRenderingContextBase::validateUniformMatrixParameters(const char* functionName, const WebGLUniformLocation* location, GC3Dboolean transpose, Float32Array* v, GC3Dsizei requiredMinSize) |
| { |
| if (!v) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array"); |
| return false; |
| } |
| return validateUniformMatrixParameters(functionName, location, transpose, v->data(), v->length(), requiredMinSize); |
| } |
| |
| bool WebGLRenderingContextBase::validateUniformMatrixParameters(const char* functionName, const WebGLUniformLocation* location, GC3Dboolean transpose, void* v, GC3Dsizei size, GC3Dsizei requiredMinSize) |
| { |
| if (!location) |
| return false; |
| if (location->program() != m_currentProgram) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "location is not from current program"); |
| return false; |
| } |
| if (!v) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array"); |
| return false; |
| } |
| if (transpose) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "transpose not FALSE"); |
| return false; |
| } |
| if (size < requiredMinSize || (size % requiredMinSize)) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "invalid size"); |
| return false; |
| } |
| return true; |
| } |
| |
| WebGLBuffer* WebGLRenderingContextBase::validateBufferDataParameters(const char* functionName, GC3Denum target, GC3Denum usage) |
| { |
| WebGLBuffer* buffer = 0; |
| switch (target) { |
| case GraphicsContext3D::ELEMENT_ARRAY_BUFFER: |
| buffer = m_boundVertexArrayObject->getElementArrayBuffer().get(); |
| break; |
| case GraphicsContext3D::ARRAY_BUFFER: |
| buffer = m_boundArrayBuffer.get(); |
| break; |
| default: |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid target"); |
| return nullptr; |
| } |
| if (!buffer) { |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, functionName, "no buffer"); |
| return nullptr; |
| } |
| switch (usage) { |
| case GraphicsContext3D::STREAM_DRAW: |
| case GraphicsContext3D::STATIC_DRAW: |
| case GraphicsContext3D::DYNAMIC_DRAW: |
| return buffer; |
| } |
| synthesizeGLError(GraphicsContext3D::INVALID_ENUM, functionName, "invalid usage"); |
| return nullptr; |
| } |
| |
| bool WebGLRenderingContextBase::validateHTMLImageElement(const char* functionName, HTMLImageElement* image, ExceptionCode& ec) |
| { |
| if (!image || !image->cachedImage()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no image"); |
| return false; |
| } |
| const URL& url = image->cachedImage()->response().url(); |
| if (url.isNull() || url.isEmpty() || !url.isValid()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "invalid image"); |
| return false; |
| } |
| if (wouldTaintOrigin(image)) { |
| ec = SECURITY_ERR; |
| return false; |
| } |
| return true; |
| } |
| |
| bool WebGLRenderingContextBase::validateHTMLCanvasElement(const char* functionName, HTMLCanvasElement* canvas, ExceptionCode& ec) |
| { |
| if (!canvas || !canvas->buffer()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no canvas"); |
| return false; |
| } |
| if (wouldTaintOrigin(canvas)) { |
| ec = SECURITY_ERR; |
| return false; |
| } |
| return true; |
| } |
| |
| #if ENABLE(VIDEO) |
| bool WebGLRenderingContextBase::validateHTMLVideoElement(const char* functionName, HTMLVideoElement* video, ExceptionCode& ec) |
| { |
| if (!video || !video->videoWidth() || !video->videoHeight()) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no video"); |
| return false; |
| } |
| if (wouldTaintOrigin(video)) { |
| ec = SECURITY_ERR; |
| return false; |
| } |
| return true; |
| } |
| #endif |
| |
| void WebGLRenderingContextBase::vertexAttribfImpl(const char* functionName, GC3Duint index, GC3Dsizei expectedSize, GC3Dfloat v0, GC3Dfloat v1, GC3Dfloat v2, GC3Dfloat v3) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (index >= m_maxVertexAttribs) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "index out of range"); |
| return; |
| } |
| // In GL, we skip setting vertexAttrib0 values. |
| if (index || isGLES2Compliant()) { |
| switch (expectedSize) { |
| case 1: |
| m_context->vertexAttrib1f(index, v0); |
| break; |
| case 2: |
| m_context->vertexAttrib2f(index, v0, v1); |
| break; |
| case 3: |
| m_context->vertexAttrib3f(index, v0, v1, v2); |
| break; |
| case 4: |
| m_context->vertexAttrib4f(index, v0, v1, v2, v3); |
| break; |
| } |
| } |
| VertexAttribValue& attribValue = m_vertexAttribValue[index]; |
| attribValue.value[0] = v0; |
| attribValue.value[1] = v1; |
| attribValue.value[2] = v2; |
| attribValue.value[3] = v3; |
| } |
| |
| void WebGLRenderingContextBase::vertexAttribfvImpl(const char* functionName, GC3Duint index, Float32Array* v, GC3Dsizei expectedSize) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (!v) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array"); |
| return; |
| } |
| vertexAttribfvImpl(functionName, index, v->data(), v->length(), expectedSize); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttribfvImpl(const char* functionName, GC3Duint index, GC3Dfloat* v, GC3Dsizei size, GC3Dsizei expectedSize) |
| { |
| if (isContextLostOrPending()) |
| return; |
| if (!v) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "no array"); |
| return; |
| } |
| if (size < expectedSize) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "invalid size"); |
| return; |
| } |
| if (index >= m_maxVertexAttribs) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, functionName, "index out of range"); |
| return; |
| } |
| // In GL, we skip setting vertexAttrib0 values. |
| if (index || isGLES2Compliant()) { |
| switch (expectedSize) { |
| case 1: |
| m_context->vertexAttrib1fv(index, v); |
| break; |
| case 2: |
| m_context->vertexAttrib2fv(index, v); |
| break; |
| case 3: |
| m_context->vertexAttrib3fv(index, v); |
| break; |
| case 4: |
| m_context->vertexAttrib4fv(index, v); |
| break; |
| } |
| } |
| VertexAttribValue& attribValue = m_vertexAttribValue[index]; |
| attribValue.initValue(); |
| for (int ii = 0; ii < expectedSize; ++ii) |
| attribValue.value[ii] = v[ii]; |
| } |
| |
| void WebGLRenderingContextBase::initVertexAttrib0() |
| { |
| WebGLVertexArrayObjectBase::VertexAttribState& state = m_boundVertexArrayObject->getVertexAttribState(0); |
| |
| m_vertexAttrib0Buffer = createBuffer(); |
| m_context->bindBuffer(GraphicsContext3D::ARRAY_BUFFER, m_vertexAttrib0Buffer->object()); |
| m_context->bufferData(GraphicsContext3D::ARRAY_BUFFER, 0, GraphicsContext3D::DYNAMIC_DRAW); |
| m_context->vertexAttribPointer(0, 4, GraphicsContext3D::FLOAT, false, 0, 0); |
| state.bufferBinding = m_vertexAttrib0Buffer; |
| m_context->bindBuffer(GraphicsContext3D::ARRAY_BUFFER, 0); |
| m_context->enableVertexAttribArray(0); |
| m_vertexAttrib0BufferSize = 0; |
| m_vertexAttrib0BufferValue[0] = 0.0f; |
| m_vertexAttrib0BufferValue[1] = 0.0f; |
| m_vertexAttrib0BufferValue[2] = 0.0f; |
| m_vertexAttrib0BufferValue[3] = 1.0f; |
| m_forceAttrib0BufferRefill = false; |
| m_vertexAttrib0UsedBefore = false; |
| } |
| |
| bool WebGLRenderingContextBase::validateSimulatedVertexAttrib0(GC3Dsizei numVertex) |
| { |
| if (numVertex < 0) |
| return false; |
| |
| if (!m_currentProgram) |
| return true; |
| |
| bool usingVertexAttrib0 = m_currentProgram->isUsingVertexAttrib0(); |
| if (!usingVertexAttrib0) |
| return true; |
| |
| auto& state = m_boundVertexArrayObject->getVertexAttribState(0); |
| if (state.enabled) |
| return true; |
| |
| Checked<GC3Dsizei, RecordOverflow> bufferSize(numVertex); |
| bufferSize += 1; |
| bufferSize *= Checked<GC3Dsizei>(4); |
| Checked<GC3Dsizeiptr, RecordOverflow> bufferDataSize(bufferSize); |
| bufferDataSize *= Checked<GC3Dsizeiptr>(sizeof(GC3Dfloat)); |
| return !bufferDataSize.hasOverflowed(); |
| } |
| |
| bool WebGLRenderingContextBase::simulateVertexAttrib0(GC3Dsizei numVertex) |
| { |
| if (!m_currentProgram) |
| return false; |
| bool usingVertexAttrib0 = m_currentProgram->isUsingVertexAttrib0(); |
| if (usingVertexAttrib0) |
| m_vertexAttrib0UsedBefore = true; |
| |
| auto& state = m_boundVertexArrayObject->getVertexAttribState(0); |
| if (state.enabled && usingVertexAttrib0) |
| return false; |
| if (!usingVertexAttrib0 && !m_vertexAttrib0UsedBefore) |
| return false; |
| m_vertexAttrib0UsedBefore = true; |
| m_context->bindBuffer(GraphicsContext3D::ARRAY_BUFFER, m_vertexAttrib0Buffer->object()); |
| |
| Checked<GC3Dsizei> bufferSize(numVertex); |
| bufferSize += 1; |
| bufferSize *= Checked<GC3Dsizei>(4); |
| |
| Checked<GC3Dsizeiptr> bufferDataSize(bufferSize); |
| bufferDataSize *= Checked<GC3Dsizeiptr>(sizeof(GC3Dfloat)); |
| |
| if (bufferDataSize.unsafeGet() > m_vertexAttrib0BufferSize) { |
| m_context->bufferData(GraphicsContext3D::ARRAY_BUFFER, bufferDataSize.unsafeGet(), 0, GraphicsContext3D::DYNAMIC_DRAW); |
| m_vertexAttrib0BufferSize = bufferDataSize.unsafeGet(); |
| m_forceAttrib0BufferRefill = true; |
| } |
| |
| auto& attribValue = m_vertexAttribValue[0]; |
| |
| if (usingVertexAttrib0 |
| && (m_forceAttrib0BufferRefill |
| || attribValue.value[0] != m_vertexAttrib0BufferValue[0] |
| || attribValue.value[1] != m_vertexAttrib0BufferValue[1] |
| || attribValue.value[2] != m_vertexAttrib0BufferValue[2] |
| || attribValue.value[3] != m_vertexAttrib0BufferValue[3])) { |
| |
| auto bufferData = std::make_unique<GC3Dfloat[]>(bufferSize.unsafeGet()); |
| for (GC3Dsizei ii = 0; ii < numVertex + 1; ++ii) { |
| bufferData[ii * 4] = attribValue.value[0]; |
| bufferData[ii * 4 + 1] = attribValue.value[1]; |
| bufferData[ii * 4 + 2] = attribValue.value[2]; |
| bufferData[ii * 4 + 3] = attribValue.value[3]; |
| } |
| m_vertexAttrib0BufferValue[0] = attribValue.value[0]; |
| m_vertexAttrib0BufferValue[1] = attribValue.value[1]; |
| m_vertexAttrib0BufferValue[2] = attribValue.value[2]; |
| m_vertexAttrib0BufferValue[3] = attribValue.value[3]; |
| m_forceAttrib0BufferRefill = false; |
| m_context->bufferSubData(GraphicsContext3D::ARRAY_BUFFER, 0, bufferDataSize.unsafeGet(), bufferData.get()); |
| } |
| m_context->vertexAttribPointer(0, 4, GraphicsContext3D::FLOAT, 0, 0, 0); |
| return true; |
| } |
| |
| void WebGLRenderingContextBase::restoreStatesAfterVertexAttrib0Simulation() |
| { |
| const WebGLVertexArrayObjectBase::VertexAttribState& state = m_boundVertexArrayObject->getVertexAttribState(0); |
| if (state.bufferBinding != m_vertexAttrib0Buffer) { |
| m_context->bindBuffer(GraphicsContext3D::ARRAY_BUFFER, objectOrZero(state.bufferBinding.get())); |
| m_context->vertexAttribPointer(0, state.size, state.type, state.normalized, state.originalStride, state.offset); |
| } |
| m_context->bindBuffer(GraphicsContext3D::ARRAY_BUFFER, objectOrZero(m_boundArrayBuffer.get())); |
| } |
| |
| void WebGLRenderingContextBase::dispatchContextLostEvent() |
| { |
| Ref<WebGLContextEvent> event = WebGLContextEvent::create(eventNames().webglcontextlostEvent, false, true, ""); |
| canvas()->dispatchEvent(event); |
| m_restoreAllowed = event->defaultPrevented(); |
| if (m_contextLostMode == RealLostContext && m_restoreAllowed) |
| m_restoreTimer.startOneShot(0); |
| } |
| |
| void WebGLRenderingContextBase::maybeRestoreContext() |
| { |
| ASSERT(m_contextLost); |
| if (!m_contextLost) |
| return; |
| |
| // The rendering context is not restored unless the default behavior of the |
| // webglcontextlost event was prevented earlier. |
| // |
| // Because of the way m_restoreTimer is set up for real vs. synthetic lost |
| // context events, we don't have to worry about this test short-circuiting |
| // the retry loop for real context lost events. |
| if (!m_restoreAllowed) |
| return; |
| |
| int contextLostReason = m_context->getExtensions()->getGraphicsResetStatusARB(); |
| |
| switch (contextLostReason) { |
| case GraphicsContext3D::NO_ERROR: |
| // The GraphicsContext3D implementation might not fully |
| // support GL_ARB_robustness semantics yet. Alternatively, the |
| // WEBGL_lose_context extension might have been used to force |
| // a lost context. |
| break; |
| case Extensions3D::GUILTY_CONTEXT_RESET_ARB: |
| // The rendering context is not restored if this context was |
| // guilty of causing the graphics reset. |
| printWarningToConsole("WARNING: WebGL content on the page caused the graphics card to reset; not restoring the context"); |
| return; |
| case Extensions3D::INNOCENT_CONTEXT_RESET_ARB: |
| // Always allow the context to be restored. |
| break; |
| case Extensions3D::UNKNOWN_CONTEXT_RESET_ARB: |
| // Warn. Ideally, prompt the user telling them that WebGL |
| // content on the page might have caused the graphics card to |
| // reset and ask them whether they want to continue running |
| // the content. Only if they say "yes" should we start |
| // attempting to restore the context. |
| printWarningToConsole("WARNING: WebGL content on the page might have caused the graphics card to reset"); |
| break; |
| } |
| |
| Frame* frame = canvas()->document().frame(); |
| if (!frame) |
| return; |
| |
| if (!frame->loader().client().allowWebGL(frame->settings().webGLEnabled())) |
| return; |
| |
| FrameView* view = frame->view(); |
| if (!view) |
| return; |
| ScrollView* root = view->root(); |
| if (!root) |
| return; |
| HostWindow* hostWindow = root->hostWindow(); |
| if (!hostWindow) |
| return; |
| |
| RefPtr<GraphicsContext3D> context(GraphicsContext3D::create(m_attributes, hostWindow)); |
| if (!context) { |
| if (m_contextLostMode == RealLostContext) |
| m_restoreTimer.startOneShot(secondsBetweenRestoreAttempts); |
| else |
| // This likely shouldn't happen but is the best way to report it to the WebGL app. |
| synthesizeGLError(GraphicsContext3D::INVALID_OPERATION, "", "error restoring context"); |
| return; |
| } |
| |
| m_context = context; |
| m_contextLost = false; |
| setupFlags(); |
| initializeNewContext(); |
| initializeVertexArrayObjects(); |
| canvas()->dispatchEvent(WebGLContextEvent::create(eventNames().webglcontextrestoredEvent, false, true, "")); |
| } |
| |
| String WebGLRenderingContextBase::ensureNotNull(const String& text) const |
| { |
| if (text.isNull()) |
| return WTF::emptyString(); |
| return text; |
| } |
| |
| WebGLRenderingContextBase::LRUImageBufferCache::LRUImageBufferCache(int capacity) |
| : m_buffers(std::make_unique<std::unique_ptr<ImageBuffer>[]>(capacity)) |
| , m_capacity(capacity) |
| { |
| } |
| |
| ImageBuffer* WebGLRenderingContextBase::LRUImageBufferCache::imageBuffer(const IntSize& size) |
| { |
| int i; |
| for (i = 0; i < m_capacity; ++i) { |
| ImageBuffer* buf = m_buffers[i].get(); |
| if (!buf) |
| break; |
| if (buf->logicalSize() != size) |
| continue; |
| bubbleToFront(i); |
| return buf; |
| } |
| |
| // FIXME (149423): Should this ImageBuffer be unconditionally unaccelerated? |
| std::unique_ptr<ImageBuffer> temp = ImageBuffer::create(size, Unaccelerated); |
| if (!temp) |
| return nullptr; |
| i = std::min(m_capacity - 1, i); |
| m_buffers[i] = WTF::move(temp); |
| |
| ImageBuffer* buf = m_buffers[i].get(); |
| bubbleToFront(i); |
| return buf; |
| } |
| |
| void WebGLRenderingContextBase::LRUImageBufferCache::bubbleToFront(int idx) |
| { |
| for (int i = idx; i > 0; --i) |
| m_buffers[i].swap(m_buffers[i-1]); |
| } |
| |
| namespace { |
| |
| String GetErrorString(GC3Denum error) |
| { |
| switch (error) { |
| case GraphicsContext3D::INVALID_ENUM: |
| return "INVALID_ENUM"; |
| case GraphicsContext3D::INVALID_VALUE: |
| return "INVALID_VALUE"; |
| case GraphicsContext3D::INVALID_OPERATION: |
| return "INVALID_OPERATION"; |
| case GraphicsContext3D::OUT_OF_MEMORY: |
| return "OUT_OF_MEMORY"; |
| case GraphicsContext3D::INVALID_FRAMEBUFFER_OPERATION: |
| return "INVALID_FRAMEBUFFER_OPERATION"; |
| case GraphicsContext3D::CONTEXT_LOST_WEBGL: |
| return "CONTEXT_LOST_WEBGL"; |
| default: |
| return String::format("WebGL ERROR(%04x)", error); |
| } |
| } |
| |
| } // namespace anonymous |
| |
| void WebGLRenderingContextBase::synthesizeGLError(GC3Denum error, const char* functionName, const char* description, ConsoleDisplayPreference display) |
| { |
| if (m_synthesizedErrorsToConsole && display == DisplayInConsole) { |
| String str = String("WebGL: ") + GetErrorString(error) + ": " + String(functionName) + ": " + String(description); |
| printGLErrorToConsole(str); |
| } |
| m_context->synthesizeGLError(error); |
| } |
| |
| |
| void WebGLRenderingContextBase::printGLWarningToConsole(const char* functionName, const char* description) |
| { |
| if (m_synthesizedErrorsToConsole) { |
| String str = String("WebGL: ") + String(functionName) + ": " + String(description); |
| printGLErrorToConsole(str); |
| } |
| } |
| |
| void WebGLRenderingContextBase::applyStencilTest() |
| { |
| bool haveStencilBuffer = false; |
| |
| if (m_framebufferBinding) |
| haveStencilBuffer = m_framebufferBinding->hasStencilBuffer(); |
| else { |
| RefPtr<WebGLContextAttributes> attributes = getContextAttributes(); |
| haveStencilBuffer = attributes->stencil(); |
| } |
| enableOrDisable(GraphicsContext3D::STENCIL_TEST, |
| m_stencilEnabled && haveStencilBuffer); |
| } |
| |
| void WebGLRenderingContextBase::enableOrDisable(GC3Denum capability, bool enable) |
| { |
| if (enable) |
| m_context->enable(capability); |
| else |
| m_context->disable(capability); |
| } |
| |
| IntSize WebGLRenderingContextBase::clampedCanvasSize() |
| { |
| return IntSize(clamp(canvas()->width(), 1, m_maxViewportDims[0]), |
| clamp(canvas()->height(), 1, m_maxViewportDims[1])); |
| } |
| |
| GC3Dint WebGLRenderingContextBase::getMaxDrawBuffers() |
| { |
| if (!supportsDrawBuffers()) |
| return 0; |
| if (!m_maxDrawBuffers) |
| m_context->getIntegerv(Extensions3D::MAX_DRAW_BUFFERS_EXT, &m_maxDrawBuffers); |
| if (!m_maxColorAttachments) |
| m_context->getIntegerv(Extensions3D::MAX_COLOR_ATTACHMENTS_EXT, &m_maxColorAttachments); |
| // WEBGL_draw_buffers requires MAX_COLOR_ATTACHMENTS >= MAX_DRAW_BUFFERS. |
| return std::min(m_maxDrawBuffers, m_maxColorAttachments); |
| } |
| |
| GC3Dint WebGLRenderingContextBase::getMaxColorAttachments() |
| { |
| if (!supportsDrawBuffers()) |
| return 0; |
| if (!m_maxColorAttachments) |
| m_context->getIntegerv(Extensions3D::MAX_COLOR_ATTACHMENTS_EXT, &m_maxColorAttachments); |
| return m_maxColorAttachments; |
| } |
| |
| void WebGLRenderingContextBase::setBackDrawBuffer(GC3Denum buf) |
| { |
| m_backDrawBuffer = buf; |
| } |
| |
| void WebGLRenderingContextBase::restoreCurrentFramebuffer() |
| { |
| ExceptionCode ec; |
| bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, m_framebufferBinding.get(), ec); |
| } |
| |
| void WebGLRenderingContextBase::restoreCurrentTexture2D() |
| { |
| ExceptionCode ec; |
| bindTexture(GraphicsContext3D::TEXTURE_2D, m_textureUnits[m_activeTextureUnit].texture2DBinding.get(), ec); |
| } |
| |
| bool WebGLRenderingContextBase::supportsDrawBuffers() |
| { |
| if (!m_drawBuffersWebGLRequirementsChecked) { |
| m_drawBuffersWebGLRequirementsChecked = true; |
| m_drawBuffersSupported = WebGLDrawBuffers::supported(this); |
| } |
| return m_drawBuffersSupported; |
| } |
| |
| void WebGLRenderingContextBase::drawArraysInstanced(GC3Denum mode, GC3Dint first, GC3Dsizei count, GC3Dsizei primcount) |
| { |
| if (!primcount) { |
| markContextChanged(); |
| return; |
| } |
| |
| if (!validateDrawArrays("drawArraysInstanced", mode, first, count, primcount)) |
| return; |
| |
| clearIfComposited(); |
| |
| bool vertexAttrib0Simulated = false; |
| if (!isGLES2Compliant()) |
| vertexAttrib0Simulated = simulateVertexAttrib0(first + count - 1); |
| if (!isGLES2NPOTStrict()) |
| checkTextureCompleteness("drawArraysInstanced", true); |
| |
| m_context->drawArraysInstanced(mode, first, count, primcount); |
| |
| if (!isGLES2Compliant() && vertexAttrib0Simulated) |
| restoreStatesAfterVertexAttrib0Simulation(); |
| if (!isGLES2NPOTStrict()) |
| checkTextureCompleteness("drawArraysInstanced", false); |
| markContextChanged(); |
| } |
| |
| void WebGLRenderingContextBase::drawElementsInstanced(GC3Denum mode, GC3Dsizei count, GC3Denum type, long long offset, GC3Dsizei primcount) |
| { |
| if (!primcount) { |
| markContextChanged(); |
| return; |
| } |
| |
| unsigned numElements = 0; |
| if (!validateDrawElements("drawElementsInstanced", mode, count, type, offset, numElements, primcount)) |
| return; |
| |
| clearIfComposited(); |
| |
| bool vertexAttrib0Simulated = false; |
| if (!isGLES2Compliant()) { |
| if (!numElements) |
| validateIndexArrayPrecise(count, type, static_cast<GC3Dintptr>(offset), numElements); |
| vertexAttrib0Simulated = simulateVertexAttrib0(numElements); |
| } |
| if (!isGLES2NPOTStrict()) |
| checkTextureCompleteness("drawElementsInstanced", true); |
| |
| m_context->drawElementsInstanced(mode, count, type, static_cast<GC3Dintptr>(offset), primcount); |
| |
| if (!isGLES2Compliant() && vertexAttrib0Simulated) |
| restoreStatesAfterVertexAttrib0Simulation(); |
| if (!isGLES2NPOTStrict()) |
| checkTextureCompleteness("drawElementsInstanced", false); |
| markContextChanged(); |
| } |
| |
| void WebGLRenderingContextBase::vertexAttribDivisor(GC3Duint index, GC3Duint divisor) |
| { |
| if (isContextLostOrPending()) |
| return; |
| |
| if (index >= m_maxVertexAttribs) { |
| synthesizeGLError(GraphicsContext3D::INVALID_VALUE, "vertexAttribDivisor", "index out of range"); |
| return; |
| } |
| |
| m_boundVertexArrayObject->setVertexAttribDivisor(index, divisor); |
| m_context->vertexAttribDivisor(index, divisor); |
| } |
| |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(WEBGL) |
