| /* |
| * Copyright (C) 2009-2021 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" |
| #include "WebGLFramebuffer.h" |
| |
| #if ENABLE(WEBGL) |
| |
| #include "WebCoreOpaqueRoot.h" |
| #include "WebGLContextGroup.h" |
| #include "WebGLDrawBuffers.h" |
| #include "WebGLRenderingContextBase.h" |
| #include <JavaScriptCore/SlotVisitor.h> |
| #include <JavaScriptCore/SlotVisitorInlines.h> |
| #include <wtf/Lock.h> |
| #include <wtf/Locker.h> |
| |
| #if !USE(ANGLE) |
| #include "GraphicsContextGLOpenGL.h" |
| #endif |
| namespace WebCore { |
| |
| namespace { |
| |
| class WebGLRenderbufferAttachment : public WebGLFramebuffer::WebGLAttachment { |
| public: |
| static Ref<WebGLFramebuffer::WebGLAttachment> create(WebGLRenderbuffer*); |
| |
| private: |
| WebGLRenderbufferAttachment(WebGLRenderbuffer*); |
| #if !USE(ANGLE) |
| GCGLsizei getWidth() const override; |
| GCGLsizei getHeight() const override; |
| GCGLenum getFormat() const override; |
| #endif |
| WebGLSharedObject* getObject() const override; |
| bool isSharedObject(WebGLSharedObject*) const override; |
| bool isValid() const override; |
| bool isInitialized() const override; |
| void setInitialized() override; |
| void onDetached(const AbstractLocker&, GraphicsContextGL*) override; |
| void attach(GraphicsContextGL*, GCGLenum target, GCGLenum attachment) override; |
| void unattach(GraphicsContextGL*, GCGLenum target, GCGLenum attachment) override; |
| void addMembersToOpaqueRoots(const AbstractLocker&, JSC::AbstractSlotVisitor&) override; |
| |
| WebGLRenderbufferAttachment() { }; |
| |
| RefPtr<WebGLRenderbuffer> m_renderbuffer; |
| }; |
| |
| Ref<WebGLFramebuffer::WebGLAttachment> WebGLRenderbufferAttachment::create(WebGLRenderbuffer* renderbuffer) |
| { |
| return adoptRef(*new WebGLRenderbufferAttachment(renderbuffer)); |
| } |
| |
| WebGLRenderbufferAttachment::WebGLRenderbufferAttachment(WebGLRenderbuffer* renderbuffer) |
| : m_renderbuffer(renderbuffer) |
| { |
| } |
| |
| #if !USE(ANGLE) |
| GCGLsizei WebGLRenderbufferAttachment::getWidth() const |
| { |
| return m_renderbuffer->getWidth(); |
| } |
| |
| GCGLsizei WebGLRenderbufferAttachment::getHeight() const |
| { |
| return m_renderbuffer->getHeight(); |
| } |
| |
| GCGLenum WebGLRenderbufferAttachment::getFormat() const |
| { |
| return m_renderbuffer->getInternalFormat(); |
| } |
| #endif |
| |
| WebGLSharedObject* WebGLRenderbufferAttachment::getObject() const |
| { |
| return m_renderbuffer->object() ? m_renderbuffer.get() : 0; |
| } |
| |
| bool WebGLRenderbufferAttachment::isSharedObject(WebGLSharedObject* object) const |
| { |
| return object == m_renderbuffer; |
| } |
| |
| bool WebGLRenderbufferAttachment::isValid() const |
| { |
| return m_renderbuffer->object(); |
| } |
| |
| bool WebGLRenderbufferAttachment::isInitialized() const |
| { |
| return m_renderbuffer->object() && m_renderbuffer->isInitialized(); |
| } |
| |
| void WebGLRenderbufferAttachment::setInitialized() |
| { |
| if (m_renderbuffer->object()) |
| m_renderbuffer->setInitialized(); |
| } |
| |
| void WebGLRenderbufferAttachment::onDetached(const AbstractLocker& locker, GraphicsContextGL* context) |
| { |
| m_renderbuffer->onDetached(locker, context); |
| } |
| |
| void WebGLRenderbufferAttachment::attach(GraphicsContextGL* context, GCGLenum target, GCGLenum attachment) |
| { |
| PlatformGLObject object = objectOrZero(m_renderbuffer.get()); |
| context->framebufferRenderbuffer(target, attachment, GraphicsContextGL::RENDERBUFFER, object); |
| } |
| |
| void WebGLRenderbufferAttachment::unattach(GraphicsContextGL* context, GCGLenum target, GCGLenum attachment) |
| { |
| #if !USE(ANGLE) |
| if (attachment == GraphicsContextGL::DEPTH_STENCIL_ATTACHMENT) { |
| context->framebufferRenderbuffer(target, GraphicsContextGL::DEPTH_ATTACHMENT, GraphicsContextGL::RENDERBUFFER, 0); |
| context->framebufferRenderbuffer(target, GraphicsContextGL::STENCIL_ATTACHMENT, GraphicsContextGL::RENDERBUFFER, 0); |
| } else |
| #endif |
| context->framebufferRenderbuffer(target, attachment, GraphicsContextGL::RENDERBUFFER, 0); |
| } |
| |
| void WebGLRenderbufferAttachment::addMembersToOpaqueRoots(const AbstractLocker&, JSC::AbstractSlotVisitor& visitor) |
| { |
| addWebCoreOpaqueRoot(visitor, m_renderbuffer.get()); |
| } |
| |
| class WebGLTextureAttachment : public WebGLFramebuffer::WebGLAttachment { |
| public: |
| static Ref<WebGLFramebuffer::WebGLAttachment> create(WebGLTexture*, GCGLenum target, GCGLint level, GCGLint layer); |
| |
| private: |
| WebGLTextureAttachment(WebGLTexture*, GCGLenum target, GCGLint level, GCGLint layer); |
| #if !USE(ANGLE) |
| GCGLsizei getWidth() const override; |
| GCGLsizei getHeight() const override; |
| GCGLenum getFormat() const override; |
| #endif |
| WebGLSharedObject* getObject() const override; |
| bool isSharedObject(WebGLSharedObject*) const override; |
| bool isValid() const override; |
| bool isInitialized() const override; |
| void setInitialized() override; |
| void onDetached(const AbstractLocker&, GraphicsContextGL*) override; |
| void attach(GraphicsContextGL*, GCGLenum target, GCGLenum attachment) override; |
| void unattach(GraphicsContextGL*, GCGLenum target, GCGLenum attachment) override; |
| void addMembersToOpaqueRoots(const AbstractLocker&, JSC::AbstractSlotVisitor&) override; |
| |
| WebGLTextureAttachment() { }; |
| |
| RefPtr<WebGLTexture> m_texture; |
| GCGLenum m_target; |
| GCGLint m_level; |
| GCGLint m_layer; |
| }; |
| |
| Ref<WebGLFramebuffer::WebGLAttachment> WebGLTextureAttachment::create(WebGLTexture* texture, GCGLenum target, GCGLint level, GCGLint layer) |
| { |
| return adoptRef(*new WebGLTextureAttachment(texture, target, level, layer)); |
| } |
| |
| WebGLTextureAttachment::WebGLTextureAttachment(WebGLTexture* texture, GCGLenum target, GCGLint level, GCGLint layer) |
| : m_texture(texture) |
| , m_target(target) |
| , m_level(level) |
| , m_layer(layer) |
| { |
| } |
| |
| #if !USE(ANGLE) |
| GCGLsizei WebGLTextureAttachment::getWidth() const |
| { |
| return m_texture->getWidth(m_target, m_level); |
| } |
| |
| GCGLsizei WebGLTextureAttachment::getHeight() const |
| { |
| return m_texture->getHeight(m_target, m_level); |
| } |
| |
| GCGLenum WebGLTextureAttachment::getFormat() const |
| { |
| return m_texture->getInternalFormat(m_target, m_level); |
| } |
| #endif |
| |
| WebGLSharedObject* WebGLTextureAttachment::getObject() const |
| { |
| return m_texture->object() ? m_texture.get() : 0; |
| } |
| |
| bool WebGLTextureAttachment::isSharedObject(WebGLSharedObject* object) const |
| { |
| return object == m_texture; |
| } |
| |
| bool WebGLTextureAttachment::isValid() const |
| { |
| return m_texture->object(); |
| } |
| |
| bool WebGLTextureAttachment::isInitialized() const |
| { |
| // Textures are assumed to be initialized. |
| return true; |
| } |
| |
| void WebGLTextureAttachment::setInitialized() |
| { |
| // Textures are assumed to be initialized. |
| } |
| |
| void WebGLTextureAttachment::onDetached(const AbstractLocker& locker, GraphicsContextGL* context) |
| { |
| m_texture->onDetached(locker, context); |
| } |
| |
| void WebGLTextureAttachment::attach(GraphicsContextGL* context, GCGLenum target, GCGLenum attachment) |
| { |
| PlatformGLObject object = objectOrZero(m_texture.get()); |
| if (m_target == GraphicsContextGL::TEXTURE_3D || m_target == GraphicsContextGL::TEXTURE_2D_ARRAY) |
| context->framebufferTextureLayer(target, attachment, object, m_level, m_layer); |
| else |
| context->framebufferTexture2D(target, attachment, m_target, object, m_level); |
| } |
| |
| void WebGLTextureAttachment::unattach(GraphicsContextGL* context, GCGLenum target, GCGLenum attachment) |
| { |
| #if USE(ANGLE) |
| // GL_DEPTH_STENCIL_ATTACHMENT attachment is valid in ES3. |
| if (m_target == GraphicsContextGL::TEXTURE_3D || m_target == GraphicsContextGL::TEXTURE_2D_ARRAY) |
| context->framebufferTextureLayer(target, attachment, 0, m_level, m_layer); |
| else |
| context->framebufferTexture2D(target, attachment, m_target, 0, m_level); |
| #else |
| UNUSED_PARAM(target); |
| if (attachment == GraphicsContextGL::DEPTH_STENCIL_ATTACHMENT) { |
| context->framebufferTexture2D(GraphicsContextGL::FRAMEBUFFER, GraphicsContextGL::DEPTH_ATTACHMENT, m_target, 0, m_level); |
| context->framebufferTexture2D(GraphicsContextGL::FRAMEBUFFER, GraphicsContextGL::STENCIL_ATTACHMENT, m_target, 0, m_level); |
| } else |
| context->framebufferTexture2D(GraphicsContextGL::FRAMEBUFFER, attachment, m_target, 0, m_level); |
| #endif |
| } |
| |
| void WebGLTextureAttachment::addMembersToOpaqueRoots(const AbstractLocker&, JSC::AbstractSlotVisitor& visitor) |
| { |
| addWebCoreOpaqueRoot(visitor, m_texture.get()); |
| } |
| |
| } // anonymous namespace |
| |
| #if !USE(ANGLE) |
| static unsigned getClearBitsByAttachmentType(GCGLenum attachment) |
| { |
| switch (attachment) { |
| case GraphicsContextGL::COLOR_ATTACHMENT0: |
| case GraphicsContextGL::COLOR_ATTACHMENT1_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT2_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT3_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT4_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT5_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT6_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT7_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT8_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT9_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT10_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT11_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT12_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT13_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT14_EXT: |
| case GraphicsContextGL::COLOR_ATTACHMENT15_EXT: |
| return GraphicsContextGL::COLOR_BUFFER_BIT; |
| case GraphicsContextGL::DEPTH_ATTACHMENT: |
| return GraphicsContextGL::DEPTH_BUFFER_BIT; |
| case GraphicsContextGL::STENCIL_ATTACHMENT: |
| return GraphicsContextGL::STENCIL_BUFFER_BIT; |
| case GraphicsContextGL::DEPTH_STENCIL_ATTACHMENT: |
| return GraphicsContextGL::DEPTH_BUFFER_BIT | GraphicsContextGL::STENCIL_BUFFER_BIT; |
| default: |
| return 0; |
| } |
| } |
| |
| static unsigned getClearBitsByFormat(GCGLenum format) |
| { |
| switch (format) { |
| case GraphicsContextGL::RGB: |
| case GraphicsContextGL::RGBA: |
| case GraphicsContextGL::LUMINANCE_ALPHA: |
| case GraphicsContextGL::LUMINANCE: |
| case GraphicsContextGL::ALPHA: |
| case GraphicsContextGL::R8: |
| case GraphicsContextGL::R8_SNORM: |
| case GraphicsContextGL::R16F: |
| case GraphicsContextGL::R32F: |
| case GraphicsContextGL::R8UI: |
| case GraphicsContextGL::R8I: |
| case GraphicsContextGL::R16UI: |
| case GraphicsContextGL::R16I: |
| case GraphicsContextGL::R32UI: |
| case GraphicsContextGL::R32I: |
| case GraphicsContextGL::RG8: |
| case GraphicsContextGL::RG8_SNORM: |
| case GraphicsContextGL::RG16F: |
| case GraphicsContextGL::RG32F: |
| case GraphicsContextGL::RG8UI: |
| case GraphicsContextGL::RG8I: |
| case GraphicsContextGL::RG16UI: |
| case GraphicsContextGL::RG16I: |
| case GraphicsContextGL::RG32UI: |
| case GraphicsContextGL::RG32I: |
| case GraphicsContextGL::RGB8: |
| case GraphicsContextGL::SRGB8: |
| case GraphicsContextGL::RGB565: |
| case GraphicsContextGL::RGB8_SNORM: |
| case GraphicsContextGL::R11F_G11F_B10F: |
| case GraphicsContextGL::RGB9_E5: |
| case GraphicsContextGL::RGB16F: |
| case GraphicsContextGL::RGB32F: |
| case GraphicsContextGL::RGB8UI: |
| case GraphicsContextGL::RGB8I: |
| case GraphicsContextGL::RGB16UI: |
| case GraphicsContextGL::RGB16I: |
| case GraphicsContextGL::RGB32UI: |
| case GraphicsContextGL::RGB32I: |
| case GraphicsContextGL::RGBA8: |
| case GraphicsContextGL::SRGB8_ALPHA8: |
| case GraphicsContextGL::RGBA8_SNORM: |
| case GraphicsContextGL::RGB5_A1: |
| case GraphicsContextGL::RGBA4: |
| case GraphicsContextGL::RGB10_A2: |
| case GraphicsContextGL::RGBA16F: |
| case GraphicsContextGL::RGBA32F: |
| case GraphicsContextGL::RGBA8UI: |
| case GraphicsContextGL::RGBA8I: |
| case GraphicsContextGL::RGB10_A2UI: |
| case GraphicsContextGL::RGBA16UI: |
| case GraphicsContextGL::RGBA16I: |
| case GraphicsContextGL::RGBA32I: |
| case GraphicsContextGL::RGBA32UI: |
| case GraphicsContextGL::SRGB_EXT: |
| case GraphicsContextGL::SRGB_ALPHA_EXT: |
| return GraphicsContextGL::COLOR_BUFFER_BIT; |
| case GraphicsContextGL::DEPTH_COMPONENT16: |
| case GraphicsContextGL::DEPTH_COMPONENT24: |
| case GraphicsContextGL::DEPTH_COMPONENT32F: |
| case GraphicsContextGL::DEPTH_COMPONENT: |
| return GraphicsContextGL::DEPTH_BUFFER_BIT; |
| case GraphicsContextGL::STENCIL_INDEX8: |
| return GraphicsContextGL::STENCIL_BUFFER_BIT; |
| case GraphicsContextGL::DEPTH_STENCIL: |
| case GraphicsContextGL::DEPTH24_STENCIL8: |
| case GraphicsContextGL::DEPTH32F_STENCIL8: |
| return GraphicsContextGL::DEPTH_BUFFER_BIT | GraphicsContextGL::STENCIL_BUFFER_BIT; |
| default: |
| return 0; |
| } |
| } |
| |
| static bool isAttachmentComplete(WebGLFramebuffer::WebGLAttachment* attachedObject, GCGLenum attachment, const char** reason) |
| { |
| ASSERT(attachedObject && attachedObject->isValid()); |
| ASSERT(reason); |
| GCGLenum format = attachedObject->getFormat(); |
| unsigned need = getClearBitsByAttachmentType(attachment); |
| unsigned have = getClearBitsByFormat(format); |
| |
| if ((need & have) != need) { |
| *reason = "attachment type is not correct for attachment"; |
| return false; |
| } |
| if (!attachedObject->getWidth() || !attachedObject->getHeight()) { |
| *reason = "attachment has a 0 dimension"; |
| return false; |
| } |
| if ((attachment == GraphicsContextGL::DEPTH_ATTACHMENT || attachment == GraphicsContextGL::STENCIL_ATTACHMENT) |
| && format == GraphicsContextGL::DEPTH_STENCIL) { |
| *reason = "attachment DEPTH_STENCIL not allowed on DEPTH or STENCIL attachment"; |
| return false; |
| } |
| return true; |
| } |
| |
| #endif |
| WebGLFramebuffer::WebGLAttachment::WebGLAttachment() = default; |
| |
| WebGLFramebuffer::WebGLAttachment::~WebGLAttachment() = default; |
| |
| Ref<WebGLFramebuffer> WebGLFramebuffer::create(WebGLRenderingContextBase& ctx) |
| { |
| return adoptRef(*new WebGLFramebuffer(ctx)); |
| } |
| |
| #if ENABLE(WEBXR) |
| |
| Ref<WebGLFramebuffer> WebGLFramebuffer::createOpaque(WebGLRenderingContextBase& ctx) |
| { |
| auto framebuffer = adoptRef(*new WebGLFramebuffer(ctx)); |
| framebuffer->m_opaque = true; |
| return framebuffer; |
| } |
| |
| #endif |
| |
| WebGLFramebuffer::WebGLFramebuffer(WebGLRenderingContextBase& ctx) |
| : WebGLContextObject(ctx) |
| , m_hasEverBeenBound(false) |
| { |
| setObject(ctx.graphicsContextGL()->createFramebuffer()); |
| } |
| |
| WebGLFramebuffer::~WebGLFramebuffer() |
| { |
| if (!context()) |
| return; |
| |
| runDestructor(); |
| } |
| |
| void WebGLFramebuffer::setAttachmentForBoundFramebuffer(GCGLenum target, GCGLenum attachment, GCGLenum texTarget, WebGLTexture* texture, GCGLint level, GCGLint layer) |
| { |
| ASSERT(object()); |
| ASSERT(isBound(target)); |
| setAttachmentInternal(attachment, texTarget, texture, level, layer); |
| if (context()->isWebGL2()) { |
| GCGLuint textureID = objectOrZero(texture); |
| // texTarget can be 0 if detaching using framebufferTextureLayer. |
| ASSERT(texTarget || !textureID); |
| switch (texTarget) { |
| case 0: |
| case GraphicsContextGL::TEXTURE_3D: |
| case GraphicsContextGL::TEXTURE_2D_ARRAY: |
| context()->graphicsContextGL()->framebufferTextureLayer(target, attachment, textureID, level, layer); |
| break; |
| default: |
| ASSERT(!layer); |
| context()->graphicsContextGL()->framebufferTexture2D(target, attachment, texTarget, textureID, level); |
| break; |
| } |
| } else { |
| ASSERT(!layer); |
| #if USE(ANGLE) |
| context()->graphicsContextGL()->framebufferTexture2D(target, attachment, texTarget, objectOrZero(texture), level); |
| #else |
| GCGLuint textureID = objectOrZero(texture); |
| if (attachment == GraphicsContextGL::DEPTH_STENCIL_ATTACHMENT) { |
| context()->graphicsContextGL()->framebufferTexture2D(target, GraphicsContextGL::DEPTH_ATTACHMENT, texTarget, textureID, level); |
| context()->graphicsContextGL()->framebufferTexture2D(target, GraphicsContextGL::STENCIL_ATTACHMENT, texTarget, textureID, level); |
| } else |
| context()->graphicsContextGL()->framebufferTexture2D(target, attachment, texTarget, textureID, level); |
| #endif |
| } |
| } |
| |
| void WebGLFramebuffer::setAttachmentForBoundFramebuffer(GCGLenum target, GCGLenum attachment, WebGLRenderbuffer* renderbuffer) |
| { |
| ASSERT(object()); |
| ASSERT(isBound(target)); |
| setAttachmentInternal(attachment, renderbuffer); |
| context()->graphicsContextGL()->framebufferRenderbuffer(target, attachment, GraphicsContextGL::RENDERBUFFER, objectOrZero(renderbuffer)); |
| } |
| |
| void WebGLFramebuffer::attach(GCGLenum target, GCGLenum attachment, GCGLenum attachmentPoint) |
| { |
| #if ASSERT_ENABLED |
| ASSERT(isBound(target)); |
| #else |
| UNUSED_PARAM(target); |
| #endif |
| RefPtr<WebGLAttachment> attachmentObject = getAttachment(attachment); |
| if (attachmentObject) |
| attachmentObject->attach(context()->graphicsContextGL(), target, attachmentPoint); |
| } |
| |
| WebGLSharedObject* WebGLFramebuffer::getAttachmentObject(GCGLenum attachment) const |
| { |
| if (!object()) |
| return 0; |
| RefPtr<WebGLAttachment> attachmentObject = getAttachment(attachment); |
| return attachmentObject ? attachmentObject->getObject() : 0; |
| } |
| |
| WebGLFramebuffer::WebGLAttachment* WebGLFramebuffer::getAttachment(GCGLenum attachment) const |
| { |
| const AttachmentMap::const_iterator it = m_attachments.find(attachment); |
| return (it != m_attachments.end()) ? it->value.get() : 0; |
| } |
| |
| void WebGLFramebuffer::removeAttachmentFromBoundFramebuffer(const AbstractLocker& locker, GCGLenum target, GCGLenum attachment) |
| { |
| if (!context()) { |
| // Context has been deleted - should not be calling this. |
| return; |
| } |
| |
| #if ASSERT_ENABLED |
| ASSERT(isBound(target)); |
| #else |
| UNUSED_PARAM(target); |
| #endif |
| if (!object()) |
| return; |
| |
| RefPtr<WebGLAttachment> attachmentObject = getAttachment(attachment); |
| if (attachmentObject) { |
| attachmentObject->onDetached(locker, context()->graphicsContextGL()); |
| m_attachments.remove(attachment); |
| drawBuffersIfNecessary(false); |
| #if !USE(ANGLE) |
| switch (attachment) { |
| case GraphicsContextGL::DEPTH_STENCIL_ATTACHMENT: |
| attach(target, GraphicsContextGL::DEPTH_ATTACHMENT, GraphicsContextGL::DEPTH_ATTACHMENT); |
| attach(target, GraphicsContextGL::STENCIL_ATTACHMENT, GraphicsContextGL::STENCIL_ATTACHMENT); |
| break; |
| case GraphicsContextGL::DEPTH_ATTACHMENT: |
| attach(target, GraphicsContextGL::DEPTH_STENCIL_ATTACHMENT, GraphicsContextGL::DEPTH_ATTACHMENT); |
| break; |
| case GraphicsContextGL::STENCIL_ATTACHMENT: |
| attach(target, GraphicsContextGL::DEPTH_STENCIL_ATTACHMENT, GraphicsContextGL::STENCIL_ATTACHMENT); |
| break; |
| } |
| #endif |
| } |
| } |
| |
| void WebGLFramebuffer::removeAttachmentFromBoundFramebuffer(const AbstractLocker& locker, GCGLenum target, WebGLSharedObject* attachment) |
| { |
| ASSERT(isBound(target)); |
| if (!object()) |
| return; |
| if (!attachment) |
| return; |
| |
| bool checkMore = true; |
| do { |
| checkMore = false; |
| for (auto& entry : m_attachments) { |
| RefPtr<WebGLAttachment> attachmentObject = entry.value.get(); |
| if (attachmentObject->isSharedObject(attachment)) { |
| GCGLenum attachmentType = entry.key; |
| attachmentObject->unattach(context()->graphicsContextGL(), target, attachmentType); |
| removeAttachmentFromBoundFramebuffer(locker, target, attachmentType); |
| checkMore = true; |
| break; |
| } |
| } |
| } while (checkMore); |
| } |
| |
| #if !USE(ANGLE) |
| GCGLsizei WebGLFramebuffer::getColorBufferWidth() const |
| { |
| if (!object()) |
| return 0; |
| RefPtr<WebGLAttachment> attachment = getAttachment(GraphicsContextGL::COLOR_ATTACHMENT0); |
| if (!attachment) |
| return 0; |
| |
| return attachment->getWidth(); |
| } |
| |
| GCGLsizei WebGLFramebuffer::getColorBufferHeight() const |
| { |
| if (!object()) |
| return 0; |
| RefPtr<WebGLAttachment> attachment = getAttachment(GraphicsContextGL::COLOR_ATTACHMENT0); |
| if (!attachment) |
| return 0; |
| |
| return attachment->getHeight(); |
| } |
| |
| GCGLenum WebGLFramebuffer::getColorBufferFormat() const |
| { |
| if (!object()) |
| return 0; |
| RefPtr<WebGLAttachment> attachment = getAttachment(GraphicsContextGL::COLOR_ATTACHMENT0); |
| if (!attachment) |
| return 0; |
| return attachment->getFormat(); |
| } |
| |
| GCGLenum WebGLFramebuffer::checkStatus(const char** reason) const |
| { |
| #if ENABLE(WEBXR) |
| // https://immersive-web.github.io/webxr/#opaque-framebuffer |
| if (m_opaque) { |
| if (m_opaqueActive) |
| return GL_FRAMEBUFFER_COMPLETE; |
| *reason = "An opaque framebuffer is considered incomplete outside of a requestAnimationFrame"; |
| return GL_FRAMEBUFFER_UNSUPPORTED; |
| } |
| #endif |
| |
| unsigned int count = 0; |
| GCGLsizei width = 0, height = 0; |
| bool haveDepth = false; |
| bool haveStencil = false; |
| bool haveDepthStencil = false; |
| for (auto& entry : m_attachments) { |
| RefPtr<WebGLAttachment> attachment = entry.value.get(); |
| if (!isAttachmentComplete(attachment.get(), entry.key, reason)) |
| return GraphicsContextGL::FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| if (!attachment->isValid()) { |
| *reason = "attachment is not valid"; |
| return GraphicsContextGL::FRAMEBUFFER_UNSUPPORTED; |
| } |
| GCGLenum attachmentFormat = attachment->getFormat(); |
| |
| // Attaching an SRGB_EXT format attachment to a framebuffer is invalid. |
| if (attachmentFormat == GraphicsContextGL::SRGB_EXT) |
| attachmentFormat = 0; |
| |
| if (!attachmentFormat) { |
| *reason = "attachment is an unsupported format"; |
| return GraphicsContextGL::FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| } |
| switch (entry.key) { |
| case GraphicsContextGL::DEPTH_ATTACHMENT: |
| haveDepth = true; |
| break; |
| case GraphicsContextGL::STENCIL_ATTACHMENT: |
| haveStencil = true; |
| break; |
| case GraphicsContextGL::DEPTH_STENCIL_ATTACHMENT: |
| haveDepthStencil = true; |
| break; |
| } |
| if (!count) { |
| width = attachment->getWidth(); |
| height = attachment->getHeight(); |
| } else { |
| if (width != attachment->getWidth() || height != attachment->getHeight()) { |
| *reason = "attachments do not have the same dimensions"; |
| return GraphicsContextGL::FRAMEBUFFER_INCOMPLETE_DIMENSIONS; |
| } |
| } |
| ++count; |
| } |
| if (!count) { |
| *reason = "no attachments"; |
| return GraphicsContextGL::FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT; |
| } |
| if (!width || !height) { |
| *reason = "framebuffer has a 0 dimension"; |
| return GraphicsContextGL::FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| } |
| // WebGL specific: no conflicting DEPTH/STENCIL/DEPTH_STENCIL attachments. |
| if ((haveDepthStencil && (haveDepth || haveStencil)) || (haveDepth && haveStencil)) { |
| *reason = "conflicting DEPTH/STENCIL/DEPTH_STENCIL attachments"; |
| return GraphicsContextGL::FRAMEBUFFER_UNSUPPORTED; |
| } |
| return GraphicsContextGL::FRAMEBUFFER_COMPLETE; |
| } |
| |
| bool WebGLFramebuffer::onAccess(GraphicsContextGL* context3d, const char** reason) |
| { |
| if (checkStatus(reason) != GraphicsContextGL::FRAMEBUFFER_COMPLETE) |
| return false; |
| return initializeAttachments(context3d, reason); |
| } |
| #endif |
| |
| bool WebGLFramebuffer::hasStencilBuffer() const |
| { |
| RefPtr<WebGLAttachment> attachment = getAttachment(GraphicsContextGL::STENCIL_ATTACHMENT); |
| if (!attachment) |
| attachment = getAttachment(GraphicsContextGL::DEPTH_STENCIL_ATTACHMENT); |
| return attachment && attachment->isValid(); |
| } |
| |
| void WebGLFramebuffer::deleteObjectImpl(const AbstractLocker& locker, GraphicsContextGL* context3d, PlatformGLObject object) |
| { |
| for (auto& attachment : m_attachments.values()) |
| attachment->onDetached(locker, context3d); |
| |
| context3d->deleteFramebuffer(object); |
| } |
| |
| #if !USE(ANGLE) |
| bool WebGLFramebuffer::initializeAttachments(GraphicsContextGL* g3d, const char** reason) |
| { |
| if (!context()) { |
| // Context has been deleted - should not be calling this. |
| return false; |
| } |
| Locker locker { objectGraphLockForContext() }; |
| |
| ASSERT(object()); |
| GCGLbitfield mask = 0; |
| |
| for (auto& entry : m_attachments) { |
| GCGLenum attachmentType = entry.key; |
| RefPtr<WebGLAttachment> attachment = entry.value.get(); |
| if (!attachment->isInitialized()) |
| mask |= getClearBitsByAttachmentType(attachmentType); |
| } |
| if (!mask) |
| return true; |
| |
| // We only clear un-initialized renderbuffers when they are ready to be |
| // read, i.e., when the framebuffer is complete. |
| if (g3d->checkFramebufferStatus(GraphicsContextGL::FRAMEBUFFER) != GraphicsContextGL::FRAMEBUFFER_COMPLETE) { |
| *reason = "framebuffer not complete"; |
| return false; |
| } |
| |
| bool initColor = mask & GraphicsContextGL::COLOR_BUFFER_BIT; |
| bool initDepth = mask & GraphicsContextGL::DEPTH_BUFFER_BIT; |
| bool initStencil = mask & GraphicsContextGL::STENCIL_BUFFER_BIT; |
| |
| GCGLfloat colorClearValue[] = {0, 0, 0, 0}, depthClearValue = 0; |
| GCGLint stencilClearValue = 0; |
| GCGLboolean colorMask[] = {0, 0, 0, 0}, depthMask = 0; |
| GCGLuint stencilMask = 0xffffffff; |
| GCGLboolean isScissorEnabled = 0; |
| GCGLboolean isDitherEnabled = 0; |
| if (initColor) { |
| g3d->getFloatv(GraphicsContextGL::COLOR_CLEAR_VALUE, colorClearValue); |
| g3d->getBooleanv(GraphicsContextGL::COLOR_WRITEMASK, colorMask); |
| g3d->clearColor(0, 0, 0, 0); |
| g3d->colorMask(true, true, true, true); |
| } |
| if (initDepth) { |
| depthClearValue = g3d->getFloat(GraphicsContextGL::DEPTH_CLEAR_VALUE); |
| depthMask = g3d->getBoolean(GraphicsContextGL::DEPTH_WRITEMASK); |
| g3d->clearDepth(1.0f); |
| g3d->depthMask(true); |
| } |
| if (initStencil) { |
| stencilClearValue = g3d->getInteger(GraphicsContextGL::STENCIL_CLEAR_VALUE); |
| stencilMask = g3d->getInteger(GraphicsContextGL::STENCIL_WRITEMASK); |
| g3d->clearStencil(0); |
| g3d->stencilMask(0xffffffff); |
| } |
| isScissorEnabled = g3d->isEnabled(GraphicsContextGL::SCISSOR_TEST); |
| g3d->disable(GraphicsContextGL::SCISSOR_TEST); |
| isDitherEnabled = g3d->isEnabled(GraphicsContextGL::DITHER); |
| g3d->disable(GraphicsContextGL::DITHER); |
| |
| g3d->clear(mask); |
| |
| if (initColor) { |
| g3d->clearColor(colorClearValue[0], colorClearValue[1], colorClearValue[2], colorClearValue[3]); |
| g3d->colorMask(colorMask[0], colorMask[1], colorMask[2], colorMask[3]); |
| } |
| if (initDepth) { |
| g3d->clearDepth(depthClearValue); |
| g3d->depthMask(depthMask); |
| } |
| if (initStencil) { |
| g3d->clearStencil(stencilClearValue); |
| g3d->stencilMask(stencilMask); |
| } |
| if (isScissorEnabled) |
| g3d->enable(GraphicsContextGL::SCISSOR_TEST); |
| else |
| g3d->disable(GraphicsContextGL::SCISSOR_TEST); |
| if (isDitherEnabled) |
| g3d->enable(GraphicsContextGL::DITHER); |
| else |
| g3d->disable(GraphicsContextGL::DITHER); |
| |
| for (AttachmentMap::iterator it = m_attachments.begin(); it != m_attachments.end(); ++it) { |
| GCGLenum attachmentType = it->key; |
| auto attachment = it->value; |
| GCGLbitfield bits = getClearBitsByAttachmentType(attachmentType); |
| if (bits & mask) |
| attachment->setInitialized(); |
| } |
| return true; |
| } |
| #endif |
| |
| bool WebGLFramebuffer::isBound(GCGLenum target) const |
| { |
| return (context()->getFramebufferBinding(target) == this); |
| } |
| |
| void WebGLFramebuffer::drawBuffers(const Vector<GCGLenum>& bufs) |
| { |
| m_drawBuffers = bufs; |
| m_filteredDrawBuffers.resize(m_drawBuffers.size()); |
| for (auto& buffer : m_filteredDrawBuffers) |
| buffer = GraphicsContextGL::NONE; |
| drawBuffersIfNecessary(true); |
| } |
| |
| void WebGLFramebuffer::drawBuffersIfNecessary(bool force) |
| { |
| if (context()->isWebGL2() || context()->m_webglDrawBuffers) { |
| bool reset = force; |
| // This filtering works around graphics driver bugs on macOS. |
| for (size_t i = 0; i < m_drawBuffers.size(); ++i) { |
| if (m_drawBuffers[i] != GraphicsContextGL::NONE && getAttachment(m_drawBuffers[i])) { |
| if (m_filteredDrawBuffers[i] != m_drawBuffers[i]) { |
| m_filteredDrawBuffers[i] = m_drawBuffers[i]; |
| reset = true; |
| } |
| } else { |
| if (m_filteredDrawBuffers[i] != GraphicsContextGL::NONE) { |
| m_filteredDrawBuffers[i] = GraphicsContextGL::NONE; |
| reset = true; |
| } |
| } |
| } |
| if (reset) { |
| if (context()->isWebGL2()) |
| context()->graphicsContextGL()->drawBuffers(m_filteredDrawBuffers); |
| else |
| context()->graphicsContextGL()->drawBuffersEXT(m_filteredDrawBuffers); |
| } |
| } |
| } |
| |
| GCGLenum WebGLFramebuffer::getDrawBuffer(GCGLenum drawBuffer) |
| { |
| int index = static_cast<int>(drawBuffer - GraphicsContextGL::DRAW_BUFFER0_EXT); |
| ASSERT(index >= 0); |
| if (index < static_cast<int>(m_drawBuffers.size())) |
| return m_drawBuffers[index]; |
| if (drawBuffer == GraphicsContextGL::DRAW_BUFFER0_EXT) |
| return GraphicsContextGL::COLOR_ATTACHMENT0; |
| return GraphicsContextGL::NONE; |
| } |
| |
| void WebGLFramebuffer::addMembersToOpaqueRoots(const AbstractLocker& locker, JSC::AbstractSlotVisitor& visitor) |
| { |
| for (auto& entry : m_attachments) |
| entry.value->addMembersToOpaqueRoots(locker, visitor); |
| } |
| |
| void WebGLFramebuffer::setAttachmentInternal(GCGLenum attachment, GCGLenum texTarget, WebGLTexture* texture, GCGLint level, GCGLint layer) |
| { |
| if (!context()) { |
| // Context has been deleted - should not be calling this. |
| return; |
| } |
| Locker locker { objectGraphLockForContext() }; |
| |
| removeAttachmentInternal(locker, attachment); |
| if (texture && texture->object()) { |
| m_attachments.set(attachment, WebGLTextureAttachment::create(texture, texTarget, level, layer)); |
| drawBuffersIfNecessary(false); |
| texture->onAttached(); |
| } |
| } |
| |
| void WebGLFramebuffer::setAttachmentInternal(GCGLenum attachment, WebGLRenderbuffer* renderbuffer) |
| { |
| if (!context()) { |
| // Context has been deleted - should not be calling this. |
| return; |
| } |
| Locker locker { objectGraphLockForContext() }; |
| |
| removeAttachmentInternal(locker, attachment); |
| if (renderbuffer && renderbuffer->object()) { |
| m_attachments.set(attachment, WebGLRenderbufferAttachment::create(renderbuffer)); |
| drawBuffersIfNecessary(false); |
| renderbuffer->onAttached(); |
| } |
| } |
| |
| void WebGLFramebuffer::removeAttachmentInternal(const AbstractLocker& locker, GCGLenum attachment) |
| { |
| WebGLAttachment* attachmentObject = getAttachment(attachment); |
| if (attachmentObject) { |
| attachmentObject->onDetached(locker, context()->graphicsContextGL()); |
| m_attachments.remove(attachment); |
| drawBuffersIfNecessary(false); |
| } |
| } |
| |
| } |
| |
| #endif // ENABLE(WEBGL) |
