| /* |
| * Copyright (C) 2020 Igalia S.L. All rights reserved. |
| * Copyright (C) 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. AND ITS CONTRIBUTORS ``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 ITS 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 "WebXROpaqueFramebuffer.h" |
| |
| #if ENABLE(WEBXR) |
| |
| #if !USE(ANGLE) |
| #include "ExtensionsGLOpenGLCommon.h" |
| #endif |
| #if USE(OPENGL_ES) |
| #include "ExtensionsGLOpenGLES.h" |
| #endif |
| #if !USE(ANGLE) |
| #include "GraphicsContextGL.h" |
| #endif |
| #include "IntSize.h" |
| #if !USE(ANGLE) |
| #include "TemporaryOpenGLSetting.h" |
| #endif |
| #include "WebGLFramebuffer.h" |
| #include "WebGLRenderingContext.h" |
| #if ENABLE(WEBGL2) |
| #include "WebGL2RenderingContext.h" |
| #endif |
| #include "WebGLRenderingContextBase.h" |
| #include <wtf/Scope.h> |
| |
| #if USE(IOSURFACE_FOR_XR_LAYER_DATA) |
| #include "ANGLEHeaders.h" |
| #include "GraphicsContextGLCocoa.h" |
| #endif |
| |
| namespace WebCore { |
| |
| using GL = GraphicsContextGL; |
| |
| std::unique_ptr<WebXROpaqueFramebuffer> WebXROpaqueFramebuffer::create(PlatformXR::LayerHandle handle, WebGLRenderingContextBase& context, Attributes&& attributes, uint32_t width, uint32_t height) |
| { |
| auto framebuffer = WebGLFramebuffer::createOpaque(context); |
| auto opaque = std::unique_ptr<WebXROpaqueFramebuffer>(new WebXROpaqueFramebuffer(handle, WTFMove(framebuffer), context, WTFMove(attributes), width, height)); |
| if (!opaque->setupFramebuffer()) |
| return nullptr; |
| return opaque; |
| } |
| |
| WebXROpaqueFramebuffer::WebXROpaqueFramebuffer(PlatformXR::LayerHandle handle, Ref<WebGLFramebuffer>&& framebuffer, WebGLRenderingContextBase& context, Attributes&& attributes, uint32_t width, uint32_t height) |
| : m_handle(handle) |
| , m_framebuffer(WTFMove(framebuffer)) |
| , m_context(context) |
| , m_attributes(WTFMove(attributes)) |
| , m_width(width) |
| , m_height(height) |
| { |
| } |
| |
| WebXROpaqueFramebuffer::~WebXROpaqueFramebuffer() |
| { |
| if (auto gl = m_context.graphicsContextGL()) { |
| #if USE(IOSURFACE_FOR_XR_LAYER_DATA) |
| if (m_opaqueTexture) |
| gl->deleteTexture(m_opaqueTexture); |
| #endif |
| if (m_stencilBuffer) |
| gl->deleteRenderbuffer(m_stencilBuffer); |
| if (m_depthStencilBuffer) |
| gl->deleteRenderbuffer(m_depthStencilBuffer); |
| if (m_multisampleColorBuffer) |
| gl->deleteRenderbuffer(m_multisampleColorBuffer); |
| if (m_resolvedFBO) |
| gl->deleteFramebuffer(m_resolvedFBO); |
| m_context.deleteFramebuffer(m_framebuffer.ptr()); |
| } |
| } |
| |
| void WebXROpaqueFramebuffer::startFrame(const PlatformXR::Device::FrameData::LayerData& data) |
| { |
| if (!m_context.graphicsContextGL()) |
| return; |
| auto& gl = *m_context.graphicsContextGL(); |
| |
| #if USE(IOSURFACE_FOR_XR_LAYER_DATA) |
| auto gCGL = static_cast<GraphicsContextGLCocoa*>(m_context.graphicsContextGL()); |
| GCGLenum textureTarget = gCGL->drawingBufferTextureTarget(); |
| GCGLenum textureTargetBinding = gCGL->drawingBufferTextureTargetQueryForDrawingTarget(textureTarget); |
| #else |
| GCGLenum textureTarget = GL::TEXTURE_2D; |
| GCGLenum textureTargetBinding = GL::TEXTURE_BINDING_2D; |
| #endif |
| |
| m_framebuffer->setOpaqueActive(true); |
| |
| GCGLint boundFBO { 0 }; |
| GCGLint boundTexture { 0 }; |
| gl.getIntegerv(GL::FRAMEBUFFER_BINDING, makeGCGLSpan(&boundFBO, 1)); |
| gl.getIntegerv(textureTargetBinding, makeGCGLSpan(&boundTexture, 1)); |
| |
| auto scopedBindings = makeScopeExit([&gl, boundFBO, boundTexture, textureTarget]() { |
| gl.bindFramebuffer(GL::FRAMEBUFFER, boundFBO); |
| gl.bindTexture(textureTarget, boundTexture); |
| }); |
| |
| gl.bindFramebuffer(GraphicsContextGL::FRAMEBUFFER, m_framebuffer->object()); |
| // https://immersive-web.github.io/webxr/#opaque-framebuffer |
| // The buffers attached to an opaque framebuffer MUST be cleared to the values in the provided table when first created, |
| // or prior to the processing of each XR animation frame. |
| // FIXME: Actually do the clearing (not using invalidateFramebuffer). This will have to be done after we've attached |
| // the textures/renderbuffers. |
| |
| #if USE(IOSURFACE_FOR_XR_LAYER_DATA) |
| ASSERT(data.surface); |
| |
| if (!m_opaqueTexture) |
| m_opaqueTexture = gCGL->createTexture(); |
| |
| gCGL->bindTexture(textureTarget, m_opaqueTexture); |
| gCGL->texParameteri(textureTarget, GL::TEXTURE_MAG_FILTER, GL::LINEAR); |
| gCGL->texParameteri(textureTarget, GL::TEXTURE_MIN_FILTER, GL::LINEAR); |
| gCGL->texParameteri(textureTarget, GL::TEXTURE_WRAP_S, GL::CLAMP_TO_EDGE); |
| gCGL->texParameteri(textureTarget, GL::TEXTURE_WRAP_T, GL::CLAMP_TO_EDGE); |
| |
| // Tell the GraphicsContextGL to use the IOSurface as the backing store for m_opaqueTexture. |
| if (data.isShared) { |
| #if !PLATFORM(IOS_FAMILY_SIMULATOR) |
| m_ioSurfaceTextureHandle = gCGL->attachIOSurfaceToSharedTexture(textureTarget, data.surface.get()); |
| m_ioSurfaceTextureHandleIsShared = true; |
| #else |
| ASSERT_NOT_REACHED(); |
| #endif |
| } else { |
| auto size = data.surface->size(); |
| if (!size.width() || !size.height()) |
| return; |
| m_ioSurfaceTextureHandle = gCGL->createPbufferAndAttachIOSurface(textureTarget, GraphicsContextGLCocoa::PbufferAttachmentUsage::Write, GL::BGRA, size.width(), size.height(), GL::UNSIGNED_BYTE, data.surface->surface(), 0); |
| m_ioSurfaceTextureHandleIsShared = false; |
| } |
| |
| if (!m_ioSurfaceTextureHandle) { |
| gCGL->deleteTexture(m_opaqueTexture); |
| m_opaqueTexture = 0; |
| return; |
| } |
| |
| // Set up the framebuffer to use the texture that points to the IOSurface. If we're not multisampling, |
| // the target framebuffer is m_framebuffer->object() (bound above). If we are multisampling, the target |
| // is the resolved framebuffer we created in setupFramebuffer. |
| if (m_multisampleColorBuffer) |
| gl.bindFramebuffer(GL::FRAMEBUFFER, m_resolvedFBO); |
| gl.framebufferTexture2D(GL::FRAMEBUFFER, GL::COLOR_ATTACHMENT0, textureTarget, m_opaqueTexture, 0); |
| |
| // At this point the framebuffer should be "complete". |
| ASSERT(gl.checkFramebufferStatus(GL::FRAMEBUFFER) == GL::FRAMEBUFFER_COMPLETE); |
| |
| #else |
| m_opaqueTexture = data.opaqueTexture; |
| |
| #if USE(OPENGL_ES) |
| auto& extensions = reinterpret_cast<ExtensionsGLOpenGLES&>(gl.getExtensions()); |
| if (m_attributes.antialias && extensions.isImagination()) { |
| extensions.framebufferTexture2DMultisampleIMG(GL::FRAMEBUFFER, GL::COLOR_ATTACHMENT0, GL::TEXTURE_2D, m_opaqueTexture, 0, m_sampleCount); |
| return; |
| } |
| #endif |
| |
| if (!m_multisampleColorBuffer) |
| gl.framebufferTexture2D(GL::FRAMEBUFFER, GL::COLOR_ATTACHMENT0, GL::TEXTURE_2D, m_opaqueTexture, 0); |
| #endif |
| } |
| |
| void WebXROpaqueFramebuffer::endFrame() |
| { |
| m_framebuffer->setOpaqueActive(false); |
| |
| if (!m_context.graphicsContextGL()) |
| return; |
| |
| auto& gl = *m_context.graphicsContextGL(); |
| |
| if (m_multisampleColorBuffer) { |
| #if !USE(ANGLE) |
| // FIXME: These may be needed when using ANGLE, but it didn't compile in the initial implementation. |
| TemporaryOpenGLSetting scopedScissor(GL::SCISSOR_TEST, 0); |
| TemporaryOpenGLSetting scopedDither(GL::DITHER, 0); |
| TemporaryOpenGLSetting scopedDepth(GL::DEPTH_TEST, 0); |
| TemporaryOpenGLSetting scopedStencil(GL::STENCIL_TEST, 0); |
| #endif |
| |
| GCGLint boundFBO { 0 }; |
| GCGLint boundReadFBO { 0 }; |
| GCGLint boundDrawFBO { 0 }; |
| gl.getIntegerv(GL::FRAMEBUFFER_BINDING, makeGCGLSpan(&boundFBO, 1)); |
| gl.getIntegerv(GL::READ_FRAMEBUFFER_BINDING, makeGCGLSpan(&boundReadFBO, 1)); |
| gl.getIntegerv(GL::DRAW_FRAMEBUFFER_BINDING, makeGCGLSpan(&boundDrawFBO, 1)); |
| |
| auto scopedBindings = makeScopeExit([&gl, boundFBO, boundReadFBO, boundDrawFBO]() { |
| gl.bindFramebuffer(GL::FRAMEBUFFER, boundFBO); |
| gl.bindFramebuffer(GL::READ_FRAMEBUFFER, boundReadFBO); |
| gl.bindFramebuffer(GL::DRAW_FRAMEBUFFER, boundDrawFBO); |
| }); |
| |
| gl.bindFramebuffer(GL::READ_FRAMEBUFFER, m_framebuffer->object()); |
| gl.bindFramebuffer(GL::DRAW_FRAMEBUFFER, m_resolvedFBO); |
| gl.blitFramebuffer(0, 0, m_width, m_height, 0, 0, m_width, m_height, GL::COLOR_BUFFER_BIT, GL::NEAREST); |
| } |
| |
| // FIXME: We have to call finish rather than flush because we only want to disconnect |
| // the IOSurface and signal the DeviceProxy when we know the content has been rendered. |
| // It might be possible to set this up so the completion of the rendering triggers |
| // the endFrame call. |
| gl.finish(); |
| |
| #if USE(IOSURFACE_FOR_XR_LAYER_DATA) |
| if (m_ioSurfaceTextureHandle) { |
| auto gCGL = static_cast<GraphicsContextGLCocoa*>(&gl); |
| if (m_ioSurfaceTextureHandleIsShared) { |
| #if !PLATFORM(IOS_FAMILY_SIMULATOR) |
| gCGL->detachIOSurfaceFromSharedTexture(m_ioSurfaceTextureHandle); |
| #else |
| ASSERT_NOT_REACHED(); |
| #endif |
| } else |
| gCGL->destroyPbufferAndDetachIOSurface(m_ioSurfaceTextureHandle); |
| m_ioSurfaceTextureHandle = nullptr; |
| m_ioSurfaceTextureHandleIsShared = false; |
| } |
| #endif |
| } |
| |
| bool WebXROpaqueFramebuffer::setupFramebuffer() |
| { |
| if (!m_context.graphicsContextGL()) |
| return false; |
| auto& gl = *m_context.graphicsContextGL(); |
| |
| // Restore bindings when exiting the function. |
| GCGLint boundFBO { 0 }; |
| GCGLint boundRenderbuffer { 0 }; |
| gl.getIntegerv(GL::FRAMEBUFFER_BINDING, makeGCGLSpan(&boundFBO, 1)); |
| gl.getIntegerv(GL::RENDERBUFFER_BINDING, makeGCGLSpan(&boundRenderbuffer, 1)); |
| |
| auto scopedBindings = makeScopeExit([&gl, boundFBO, boundRenderbuffer]() { |
| gl.bindFramebuffer(GL::FRAMEBUFFER, boundFBO); |
| gl.bindRenderbuffer(GL::RENDERBUFFER, boundRenderbuffer); |
| }); |
| |
| // Set up color, depth and stencil formats |
| bool hasDepthOrStencil = m_attributes.stencil || m_attributes.depth; |
| #if USE(OPENGL_ES) |
| auto& extensions = reinterpret_cast<ExtensionsGLOpenGLES&>(gl.getExtensions()); |
| bool platformSupportsPackedDepthStencil = hasDepthOrStencil && extensions.supports("GL_OES_packed_depth_stencil"); |
| auto depthFormat = platformSupportsPackedDepthStencil ? GL::DEPTH24_STENCIL8 : GL::DEPTH_COMPONENT16; |
| auto stencilFormat = GL::STENCIL_INDEX8; |
| #elif USE(ANGLE) |
| bool platformSupportsPackedDepthStencil = true; |
| auto depthFormat = platformSupportsPackedDepthStencil ? GL::DEPTH24_STENCIL8 : GL::DEPTH_COMPONENT; |
| auto stencilFormat = GL::STENCIL_INDEX8; |
| #else |
| auto& extensions = reinterpret_cast<ExtensionsGLOpenGLCommon&>(gl.getExtensions()); |
| bool platformSupportsPackedDepthStencil = hasDepthOrStencil && extensions.supports("GL_EXT_packed_depth_stencil"); |
| auto depthFormat = platformSupportsPackedDepthStencil ? GL::DEPTH24_STENCIL8 : GL::DEPTH_COMPONENT; |
| auto stencilFormat = GL::STENCIL_COMPONENT; |
| #endif |
| |
| // Set up recommended samples for WebXR. |
| // FIXME: check if we can get recommended values from each device platform. |
| if (m_attributes.antialias) { |
| GCGLint maxSampleCount; |
| #if USE(ANGLE) |
| gl.getIntegerv(GL::MAX_SAMPLES, makeGCGLSpan(&maxSampleCount, 1)); |
| #else |
| gl.getIntegerv(ExtensionsGL::MAX_SAMPLES, makeGCGLSpan(&maxSampleCount, 1)); |
| #endif |
| // Cap the maxiumum multisample count at 4. Any more than this is likely overkill and will impact performance. |
| m_sampleCount = std::min(4, maxSampleCount); |
| } |
| |
| #if USE(OPENGL_ES) |
| // Use multisampled_render_to_texture extension if available. |
| if (m_attributes.antialias && extensions.isImagination()) { |
| // framebufferTexture2DMultisampleIMG is set up in startFrame call. |
| if (!hasDepthOrStencil) |
| return true; |
| |
| gl.bindFramebuffer(GL::FRAMEBUFFER, m_framebuffer->object()); |
| m_depthStencilBuffer = gl.createRenderbuffer(); |
| if (platformSupportsPackedDepthStencil) { |
| gl.bindRenderbuffer(GL::RENDERBUFFER, m_depthStencilBuffer); |
| extensions.renderbufferStorageMultisampleANGLE(GL::RENDERBUFFER, m_sampleCount, depthFormat, m_width, m_height); |
| if (m_attributes.stencil) |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::STENCIL_ATTACHMENT, GL::RENDERBUFFER, m_depthStencilBuffer); |
| if (m_attributes.depth) |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::DEPTH_ATTACHMENT, GL::RENDERBUFFER, m_depthStencilBuffer); |
| } else { |
| if (m_attributes.stencil) { |
| m_stencilBuffer = gl.createRenderbuffer(); |
| gl.bindRenderbuffer(GL::RENDERBUFFER, m_stencilBuffer); |
| extensions.renderbufferStorageMultisampleANGLE(GL::RENDERBUFFER, m_sampleCount, stencilFormat, m_width, m_height); |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::STENCIL_ATTACHMENT, GL::RENDERBUFFER, m_stencilBuffer); |
| } |
| if (m_attributes.depth) { |
| gl.bindRenderbuffer(GL::RENDERBUFFER, m_depthStencilBuffer); |
| extensions.renderbufferStorageMultisampleANGLE(GL::RENDERBUFFER, m_sampleCount, depthFormat, m_width, m_height); |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::DEPTH_ATTACHMENT, GL::RENDERBUFFER, m_depthStencilBuffer); |
| } |
| } |
| return true; |
| } |
| #endif // USE(OPENGL_ES) |
| |
| if (m_attributes.antialias && m_context.isWebGL2()) { |
| m_resolvedFBO = gl.createFramebuffer(); |
| m_multisampleColorBuffer = gl.createRenderbuffer(); |
| gl.bindFramebuffer(GL::FRAMEBUFFER, m_framebuffer->object()); |
| gl.bindRenderbuffer(GL::RENDERBUFFER, m_multisampleColorBuffer); |
| gl.renderbufferStorageMultisample(GL::RENDERBUFFER, m_sampleCount, GL::RGBA8, m_width, m_height); |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::COLOR_ATTACHMENT0, GL::RENDERBUFFER, m_multisampleColorBuffer); |
| if (hasDepthOrStencil) { |
| m_depthStencilBuffer = gl.createRenderbuffer(); |
| if (platformSupportsPackedDepthStencil) { |
| gl.bindRenderbuffer(GL::RENDERBUFFER, m_depthStencilBuffer); |
| gl.renderbufferStorageMultisample(GL::RENDERBUFFER, m_sampleCount, depthFormat, m_width, m_height); |
| if (m_attributes.stencil) |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::STENCIL_ATTACHMENT, GL::RENDERBUFFER, m_depthStencilBuffer); |
| if (m_attributes.depth) |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::DEPTH_ATTACHMENT, GL::RENDERBUFFER, m_depthStencilBuffer); |
| } else { |
| if (m_attributes.stencil) { |
| m_stencilBuffer = gl.createRenderbuffer(); |
| gl.bindRenderbuffer(GL::RENDERBUFFER, m_stencilBuffer); |
| gl.renderbufferStorageMultisample(GL::RENDERBUFFER, m_sampleCount, stencilFormat, m_width, m_height); |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::STENCIL_ATTACHMENT, GL::RENDERBUFFER, m_stencilBuffer); |
| } |
| if (m_attributes.depth) { |
| gl.bindRenderbuffer(GL::RENDERBUFFER, m_depthStencilBuffer); |
| gl.renderbufferStorageMultisample(GL::RENDERBUFFER, m_sampleCount, depthFormat, m_width, m_height); |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::DEPTH_ATTACHMENT, GL::RENDERBUFFER, m_depthStencilBuffer); |
| } |
| } |
| } |
| return gl.checkFramebufferStatus(GL::FRAMEBUFFER) == GL::FRAMEBUFFER_COMPLETE; |
| } |
| |
| if (hasDepthOrStencil) { |
| gl.bindFramebuffer(GL::FRAMEBUFFER, m_framebuffer->object()); |
| m_depthStencilBuffer = gl.createRenderbuffer(); |
| if (platformSupportsPackedDepthStencil) { |
| gl.bindRenderbuffer(GL::RENDERBUFFER, m_depthStencilBuffer); |
| gl.renderbufferStorage(GL::RENDERBUFFER, depthFormat, m_width, m_height); |
| if (m_context.isWebGL2()) { |
| if (m_attributes.stencil) |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::STENCIL_ATTACHMENT, GL::RENDERBUFFER, m_depthStencilBuffer); |
| if (m_attributes.depth) |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::DEPTH_ATTACHMENT, GL::RENDERBUFFER, m_depthStencilBuffer); |
| } else { |
| if (m_attributes.stencil || m_attributes.depth) |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::DEPTH_STENCIL_ATTACHMENT, GL::RENDERBUFFER, m_depthStencilBuffer); |
| } |
| } else { |
| if (m_attributes.stencil) { |
| m_stencilBuffer = gl.createRenderbuffer(); |
| gl.bindRenderbuffer(GL::RENDERBUFFER, m_stencilBuffer); |
| gl.renderbufferStorage(GL::RENDERBUFFER, stencilFormat, m_width, m_height); |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::STENCIL_ATTACHMENT, GL::RENDERBUFFER, m_stencilBuffer); |
| } |
| if (m_attributes.depth) { |
| gl.bindRenderbuffer(GL::RENDERBUFFER, m_depthStencilBuffer); |
| gl.renderbufferStorage(GL::RENDERBUFFER, depthFormat, m_width, m_height); |
| gl.framebufferRenderbuffer(GL::FRAMEBUFFER, GL::DEPTH_ATTACHMENT, GL::RENDERBUFFER, m_depthStencilBuffer); |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(WEBXR) |
