gecko/dom/canvas/WebGLElementArrayCache.cpp
Birunthan Mohanathas 85e5dc87b9 Bug 946065 - Part 1: Move content/canvas/ to dom/ and flatten subdirectories. r=ehsan
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rename : content/canvas/src/CanvasGradient.h => dom/canvas/CanvasGradient.h
rename : content/canvas/src/CanvasImageCache.cpp => dom/canvas/CanvasImageCache.cpp
rename : content/canvas/src/CanvasImageCache.h => dom/canvas/CanvasImageCache.h
rename : content/canvas/src/CanvasPattern.h => dom/canvas/CanvasPattern.h
rename : content/canvas/src/CanvasRenderingContext2D.cpp => dom/canvas/CanvasRenderingContext2D.cpp
rename : content/canvas/src/CanvasRenderingContext2D.h => dom/canvas/CanvasRenderingContext2D.h
rename : content/canvas/src/CanvasUtils.cpp => dom/canvas/CanvasUtils.cpp
rename : content/canvas/src/CanvasUtils.h => dom/canvas/CanvasUtils.h
rename : content/canvas/src/DocumentRendererChild.cpp => dom/canvas/DocumentRendererChild.cpp
rename : content/canvas/public/DocumentRendererChild.h => dom/canvas/DocumentRendererChild.h
rename : content/canvas/src/DocumentRendererParent.cpp => dom/canvas/DocumentRendererParent.cpp
rename : content/canvas/public/DocumentRendererParent.h => dom/canvas/DocumentRendererParent.h
rename : content/canvas/src/ImageData.cpp => dom/canvas/ImageData.cpp
rename : content/canvas/src/ImageData.h => dom/canvas/ImageData.h
rename : content/canvas/src/ImageEncoder.cpp => dom/canvas/ImageEncoder.cpp
rename : content/canvas/src/ImageEncoder.h => dom/canvas/ImageEncoder.h
rename : content/canvas/src/Makefile.in => dom/canvas/Makefile.in
rename : content/canvas/src/MurmurHash3.cpp => dom/canvas/MurmurHash3.cpp
rename : content/canvas/src/MurmurHash3.h => dom/canvas/MurmurHash3.h
rename : content/canvas/src/TextMetrics.h => dom/canvas/TextMetrics.h
rename : content/canvas/src/WebGL1Context.cpp => dom/canvas/WebGL1Context.cpp
rename : content/canvas/src/WebGL1Context.h => dom/canvas/WebGL1Context.h
rename : content/canvas/src/WebGL2Context.cpp => dom/canvas/WebGL2Context.cpp
rename : content/canvas/src/WebGL2Context.h => dom/canvas/WebGL2Context.h
rename : content/canvas/src/WebGLActiveInfo.cpp => dom/canvas/WebGLActiveInfo.cpp
rename : content/canvas/src/WebGLActiveInfo.h => dom/canvas/WebGLActiveInfo.h
rename : content/canvas/src/WebGLBuffer.cpp => dom/canvas/WebGLBuffer.cpp
rename : content/canvas/src/WebGLBuffer.h => dom/canvas/WebGLBuffer.h
rename : content/canvas/src/WebGLContext.cpp => dom/canvas/WebGLContext.cpp
rename : content/canvas/src/WebGLContext.h => dom/canvas/WebGLContext.h
rename : content/canvas/src/WebGLContextAsyncQueries.cpp => dom/canvas/WebGLContextAsyncQueries.cpp
rename : content/canvas/src/WebGLContextBuffers.cpp => dom/canvas/WebGLContextBuffers.cpp
rename : content/canvas/src/WebGLContextDraw.cpp => dom/canvas/WebGLContextDraw.cpp
rename : content/canvas/src/WebGLContextExtensions.cpp => dom/canvas/WebGLContextExtensions.cpp
rename : content/canvas/src/WebGLContextFramebufferOperations.cpp => dom/canvas/WebGLContextFramebufferOperations.cpp
rename : content/canvas/src/WebGLContextGL.cpp => dom/canvas/WebGLContextGL.cpp
rename : content/canvas/src/WebGLContextLossTimer.cpp => dom/canvas/WebGLContextLossTimer.cpp
rename : content/canvas/src/WebGLContextNotSupported.cpp => dom/canvas/WebGLContextNotSupported.cpp
rename : content/canvas/src/WebGLContextReporter.cpp => dom/canvas/WebGLContextReporter.cpp
rename : content/canvas/src/WebGLContextState.cpp => dom/canvas/WebGLContextState.cpp
rename : content/canvas/src/WebGLContextUtils.cpp => dom/canvas/WebGLContextUtils.cpp
rename : content/canvas/src/WebGLContextUtils.h => dom/canvas/WebGLContextUtils.h
rename : content/canvas/src/WebGLContextValidate.cpp => dom/canvas/WebGLContextValidate.cpp
rename : content/canvas/src/WebGLContextVertexArray.cpp => dom/canvas/WebGLContextVertexArray.cpp
rename : content/canvas/src/WebGLContextVertices.cpp => dom/canvas/WebGLContextVertices.cpp
rename : content/canvas/src/WebGLElementArrayCache.cpp => dom/canvas/WebGLElementArrayCache.cpp
rename : content/canvas/src/WebGLElementArrayCache.h => dom/canvas/WebGLElementArrayCache.h
rename : content/canvas/src/WebGLExtensionBase.cpp => dom/canvas/WebGLExtensionBase.cpp
rename : content/canvas/src/WebGLExtensionBlendMinMax.cpp => dom/canvas/WebGLExtensionBlendMinMax.cpp
rename : content/canvas/src/WebGLExtensionColorBufferFloat.cpp => dom/canvas/WebGLExtensionColorBufferFloat.cpp
rename : content/canvas/src/WebGLExtensionColorBufferHalfFloat.cpp => dom/canvas/WebGLExtensionColorBufferHalfFloat.cpp
rename : content/canvas/src/WebGLExtensionCompressedTextureATC.cpp => dom/canvas/WebGLExtensionCompressedTextureATC.cpp
rename : content/canvas/src/WebGLExtensionCompressedTextureETC1.cpp => dom/canvas/WebGLExtensionCompressedTextureETC1.cpp
rename : content/canvas/src/WebGLExtensionCompressedTexturePVRTC.cpp => dom/canvas/WebGLExtensionCompressedTexturePVRTC.cpp
rename : content/canvas/src/WebGLExtensionCompressedTextureS3TC.cpp => dom/canvas/WebGLExtensionCompressedTextureS3TC.cpp
rename : content/canvas/src/WebGLExtensionDebugRendererInfo.cpp => dom/canvas/WebGLExtensionDebugRendererInfo.cpp
rename : content/canvas/src/WebGLExtensionDebugShaders.cpp => dom/canvas/WebGLExtensionDebugShaders.cpp
rename : content/canvas/src/WebGLExtensionDepthTexture.cpp => dom/canvas/WebGLExtensionDepthTexture.cpp
rename : content/canvas/src/WebGLExtensionDrawBuffers.cpp => dom/canvas/WebGLExtensionDrawBuffers.cpp
rename : content/canvas/src/WebGLExtensionElementIndexUint.cpp => dom/canvas/WebGLExtensionElementIndexUint.cpp
rename : content/canvas/src/WebGLExtensionFragDepth.cpp => dom/canvas/WebGLExtensionFragDepth.cpp
rename : content/canvas/src/WebGLExtensionInstancedArrays.cpp => dom/canvas/WebGLExtensionInstancedArrays.cpp
rename : content/canvas/src/WebGLExtensionLoseContext.cpp => dom/canvas/WebGLExtensionLoseContext.cpp
rename : content/canvas/src/WebGLExtensionSRGB.cpp => dom/canvas/WebGLExtensionSRGB.cpp
rename : content/canvas/src/WebGLExtensionStandardDerivatives.cpp => dom/canvas/WebGLExtensionStandardDerivatives.cpp
rename : content/canvas/src/WebGLExtensionTextureFilterAnisotropic.cpp => dom/canvas/WebGLExtensionTextureFilterAnisotropic.cpp
rename : content/canvas/src/WebGLExtensionTextureFloat.cpp => dom/canvas/WebGLExtensionTextureFloat.cpp
rename : content/canvas/src/WebGLExtensionTextureFloatLinear.cpp => dom/canvas/WebGLExtensionTextureFloatLinear.cpp
rename : content/canvas/src/WebGLExtensionTextureHalfFloat.cpp => dom/canvas/WebGLExtensionTextureHalfFloat.cpp
rename : content/canvas/src/WebGLExtensionTextureHalfFloatLinear.cpp => dom/canvas/WebGLExtensionTextureHalfFloatLinear.cpp
rename : content/canvas/src/WebGLExtensionVertexArray.cpp => dom/canvas/WebGLExtensionVertexArray.cpp
rename : content/canvas/src/WebGLExtensions.h => dom/canvas/WebGLExtensions.h
rename : content/canvas/src/WebGLFramebuffer.cpp => dom/canvas/WebGLFramebuffer.cpp
rename : content/canvas/src/WebGLFramebuffer.h => dom/canvas/WebGLFramebuffer.h
rename : content/canvas/src/WebGLFramebufferAttachable.cpp => dom/canvas/WebGLFramebufferAttachable.cpp
rename : content/canvas/src/WebGLFramebufferAttachable.h => dom/canvas/WebGLFramebufferAttachable.h
rename : content/canvas/src/WebGLMemoryTracker.h => dom/canvas/WebGLMemoryTracker.h
rename : content/canvas/src/WebGLObjectModel.cpp => dom/canvas/WebGLObjectModel.cpp
rename : content/canvas/src/WebGLObjectModel.h => dom/canvas/WebGLObjectModel.h
rename : content/canvas/src/WebGLProgram.cpp => dom/canvas/WebGLProgram.cpp
rename : content/canvas/src/WebGLProgram.h => dom/canvas/WebGLProgram.h
rename : content/canvas/src/WebGLQuery.cpp => dom/canvas/WebGLQuery.cpp
rename : content/canvas/src/WebGLQuery.h => dom/canvas/WebGLQuery.h
rename : content/canvas/src/WebGLRenderbuffer.cpp => dom/canvas/WebGLRenderbuffer.cpp
rename : content/canvas/src/WebGLRenderbuffer.h => dom/canvas/WebGLRenderbuffer.h
rename : content/canvas/src/WebGLShader.cpp => dom/canvas/WebGLShader.cpp
rename : content/canvas/src/WebGLShader.h => dom/canvas/WebGLShader.h
rename : content/canvas/src/WebGLShaderPrecisionFormat.cpp => dom/canvas/WebGLShaderPrecisionFormat.cpp
rename : content/canvas/src/WebGLShaderPrecisionFormat.h => dom/canvas/WebGLShaderPrecisionFormat.h
rename : content/canvas/src/WebGLTexelConversions.cpp => dom/canvas/WebGLTexelConversions.cpp
rename : content/canvas/src/WebGLTexelConversions.h => dom/canvas/WebGLTexelConversions.h
rename : content/canvas/src/WebGLTexture.cpp => dom/canvas/WebGLTexture.cpp
rename : content/canvas/src/WebGLTexture.h => dom/canvas/WebGLTexture.h
rename : content/canvas/src/WebGLTypes.h => dom/canvas/WebGLTypes.h
rename : content/canvas/src/WebGLUniformInfo.h => dom/canvas/WebGLUniformInfo.h
rename : content/canvas/src/WebGLUniformLocation.cpp => dom/canvas/WebGLUniformLocation.cpp
rename : content/canvas/src/WebGLUniformLocation.h => dom/canvas/WebGLUniformLocation.h
rename : content/canvas/src/WebGLValidateStrings.h => dom/canvas/WebGLValidateStrings.h
rename : content/canvas/src/WebGLVertexArray.cpp => dom/canvas/WebGLVertexArray.cpp
rename : content/canvas/src/WebGLVertexArray.h => dom/canvas/WebGLVertexArray.h
rename : content/canvas/src/WebGLVertexArrayFake.cpp => dom/canvas/WebGLVertexArrayFake.cpp
rename : content/canvas/src/WebGLVertexArrayFake.h => dom/canvas/WebGLVertexArrayFake.h
rename : content/canvas/src/WebGLVertexArrayGL.cpp => dom/canvas/WebGLVertexArrayGL.cpp
rename : content/canvas/src/WebGLVertexArrayGL.h => dom/canvas/WebGLVertexArrayGL.h
rename : content/canvas/src/WebGLVertexAttribData.h => dom/canvas/WebGLVertexAttribData.h
rename : content/canvas/compiledtest/TestWebGLElementArrayCache.cpp => dom/canvas/compiledtest/TestWebGLElementArrayCache.cpp
rename : content/canvas/compiledtest/moz.build => dom/canvas/compiledtest/moz.build
rename : content/canvas/crashtests/0px-size-font-667225.html => dom/canvas/crashtests/0px-size-font-667225.html
rename : content/canvas/crashtests/0px-size-font-shadow.html => dom/canvas/crashtests/0px-size-font-shadow.html
rename : content/canvas/crashtests/360293-1.html => dom/canvas/crashtests/360293-1.html
rename : content/canvas/crashtests/421715-1.html => dom/canvas/crashtests/421715-1.html
rename : content/canvas/crashtests/553938-1.html => dom/canvas/crashtests/553938-1.html
rename : content/canvas/crashtests/647480.html => dom/canvas/crashtests/647480.html
rename : content/canvas/crashtests/727547.html => dom/canvas/crashtests/727547.html
rename : content/canvas/crashtests/729116.html => dom/canvas/crashtests/729116.html
rename : content/canvas/crashtests/743499-negative-size.html => dom/canvas/crashtests/743499-negative-size.html
rename : content/canvas/crashtests/745699-1.html => dom/canvas/crashtests/745699-1.html
rename : content/canvas/crashtests/745818-large-source.html => dom/canvas/crashtests/745818-large-source.html
rename : content/canvas/crashtests/746813-1.html => dom/canvas/crashtests/746813-1.html
rename : content/canvas/crashtests/767337-1.html => dom/canvas/crashtests/767337-1.html
rename : content/canvas/crashtests/780392-1.html => dom/canvas/crashtests/780392-1.html
rename : content/canvas/crashtests/789933-1.html => dom/canvas/crashtests/789933-1.html
rename : content/canvas/crashtests/794463-1.html => dom/canvas/crashtests/794463-1.html
rename : content/canvas/crashtests/802926-1.html => dom/canvas/crashtests/802926-1.html
rename : content/canvas/crashtests/896047-1.html => dom/canvas/crashtests/896047-1.html
rename : content/canvas/crashtests/896047-2.html => dom/canvas/crashtests/896047-2.html
rename : content/canvas/crashtests/916128-1.html => dom/canvas/crashtests/916128-1.html
rename : content/canvas/crashtests/934939-1.html => dom/canvas/crashtests/934939-1.html
rename : content/canvas/crashtests/crashtests.list => dom/canvas/crashtests/crashtests.list
rename : content/canvas/crashtests/texImage2D.html => dom/canvas/crashtests/texImage2D.html
rename : content/canvas/moz.build => dom/canvas/moz.build
rename : content/canvas/public/nsICanvasRenderingContextInternal.h => dom/canvas/nsICanvasRenderingContextInternal.h
rename : content/canvas/test/android.json => dom/canvas/test/android.json
rename : content/canvas/test/chrome/chrome.ini => dom/canvas/test/chrome/chrome.ini
rename : content/canvas/test/chrome/nonchrome_webgl_debug_renderer_info.html => dom/canvas/test/chrome/nonchrome_webgl_debug_renderer_info.html
rename : content/canvas/test/chrome/test_drawWindow_widget_layers.html => dom/canvas/test/chrome/test_drawWindow_widget_layers.html
rename : content/canvas/test/chrome/test_webgl_debug_renderer_info.html => dom/canvas/test/chrome/test_webgl_debug_renderer_info.html
rename : content/canvas/test/crossorigin/image-allow-credentials.png => dom/canvas/test/crossorigin/image-allow-credentials.png
rename : content/canvas/test/crossorigin/image-allow-credentials.png^headers^ => dom/canvas/test/crossorigin/image-allow-credentials.png^headers^
rename : content/canvas/test/crossorigin/image-allow-star.png => dom/canvas/test/crossorigin/image-allow-star.png
rename : content/canvas/test/crossorigin/image-allow-star.png^headers^ => dom/canvas/test/crossorigin/image-allow-star.png^headers^
rename : content/canvas/test/crossorigin/image.png => dom/canvas/test/crossorigin/image.png
rename : content/canvas/test/crossorigin/mochitest.ini => dom/canvas/test/crossorigin/mochitest.ini
rename : content/canvas/test/crossorigin/test_canvas2d_crossorigin.html => dom/canvas/test/crossorigin/test_canvas2d_crossorigin.html
rename : content/canvas/test/crossorigin/test_video_crossorigin.html => dom/canvas/test/crossorigin/test_video_crossorigin.html
rename : content/canvas/test/crossorigin/test_webgl_crossorigin_textures.html => dom/canvas/test/crossorigin/test_webgl_crossorigin_textures.html
rename : content/canvas/test/crossorigin/video.sjs => dom/canvas/test/crossorigin/video.sjs
rename : content/canvas/test/file_drawImage_document_domain.html => dom/canvas/test/file_drawImage_document_domain.html
rename : content/canvas/test/file_drawWindow_common.js => dom/canvas/test/file_drawWindow_common.js
rename : content/canvas/test/file_drawWindow_source.html => dom/canvas/test/file_drawWindow_source.html
rename : content/canvas/test/image_anim-gr.gif => dom/canvas/test/image_anim-gr.gif
rename : content/canvas/test/image_anim-gr.png => dom/canvas/test/image_anim-gr.png
rename : content/canvas/test/image_anim-poster-gr.png => dom/canvas/test/image_anim-poster-gr.png
rename : content/canvas/test/image_broken.png => dom/canvas/test/image_broken.png
rename : content/canvas/test/image_ggrr-256x256.png => dom/canvas/test/image_ggrr-256x256.png
rename : content/canvas/test/image_green-16x16.png => dom/canvas/test/image_green-16x16.png
rename : content/canvas/test/image_green-1x1.png => dom/canvas/test/image_green-1x1.png
rename : content/canvas/test/image_green-redirect => dom/canvas/test/image_green-redirect
rename : content/canvas/test/image_green-redirect^headers^ => dom/canvas/test/image_green-redirect^headers^
rename : content/canvas/test/image_green.png => dom/canvas/test/image_green.png
rename : content/canvas/test/image_red-16x16.png => dom/canvas/test/image_red-16x16.png
rename : content/canvas/test/image_red.png => dom/canvas/test/image_red.png
rename : content/canvas/test/image_redtransparent.png => dom/canvas/test/image_redtransparent.png
rename : content/canvas/test/image_rgrg-256x256.png => dom/canvas/test/image_rgrg-256x256.png
rename : content/canvas/test/image_rrgg-256x256.png => dom/canvas/test/image_rrgg-256x256.png
rename : content/canvas/test/image_transparent.png => dom/canvas/test/image_transparent.png
rename : content/canvas/test/image_transparent50.png => dom/canvas/test/image_transparent50.png
rename : content/canvas/test/image_yellow.png => dom/canvas/test/image_yellow.png
rename : content/canvas/test/image_yellow75.png => dom/canvas/test/image_yellow75.png
rename : content/canvas/test/mochitest.ini => dom/canvas/test/mochitest.ini
rename : content/canvas/test/moz.build => dom/canvas/test/moz.build
rename : content/canvas/test/reftest/black.html => dom/canvas/test/reftest/black.html
rename : content/canvas/test/reftest/clip-multiple-paths-badref.html => dom/canvas/test/reftest/clip-multiple-paths-badref.html
rename : content/canvas/test/reftest/clip-multiple-paths.html => dom/canvas/test/reftest/clip-multiple-paths.html
rename : content/canvas/test/reftest/colors-half-alpha.png => dom/canvas/test/reftest/colors-half-alpha.png
rename : content/canvas/test/reftest/colors.png => dom/canvas/test/reftest/colors.png
rename : content/canvas/test/reftest/drawCustomFocusRing-ref.html => dom/canvas/test/reftest/drawCustomFocusRing-ref.html
rename : content/canvas/test/reftest/drawCustomFocusRing.html => dom/canvas/test/reftest/drawCustomFocusRing.html
rename : content/canvas/test/reftest/drawFocusIfNeeded-ref.html => dom/canvas/test/reftest/drawFocusIfNeeded-ref.html
rename : content/canvas/test/reftest/drawFocusIfNeeded.html => dom/canvas/test/reftest/drawFocusIfNeeded.html
rename : content/canvas/test/reftest/green.png => dom/canvas/test/reftest/green.png
rename : content/canvas/test/reftest/half-colors-half-alpha.png => dom/canvas/test/reftest/half-colors-half-alpha.png
rename : content/canvas/test/reftest/half-colors.png => dom/canvas/test/reftest/half-colors.png
rename : content/canvas/test/reftest/reftest.list => dom/canvas/test/reftest/reftest.list
rename : content/canvas/test/reftest/stroketext-shadow-ref.html => dom/canvas/test/reftest/stroketext-shadow-ref.html
rename : content/canvas/test/reftest/stroketext-shadow.html => dom/canvas/test/reftest/stroketext-shadow.html
rename : content/canvas/test/reftest/webgl-clear-test.html => dom/canvas/test/reftest/webgl-clear-test.html
rename : content/canvas/test/reftest/webgl-color-alpha-test.html => dom/canvas/test/reftest/webgl-color-alpha-test.html
rename : content/canvas/test/reftest/webgl-color-test.html => dom/canvas/test/reftest/webgl-color-test.html
rename : content/canvas/test/reftest/webgl-disable-test.html => dom/canvas/test/reftest/webgl-disable-test.html
rename : content/canvas/test/reftest/webgl-hanging-fb-test.html => dom/canvas/test/reftest/webgl-hanging-fb-test.html
rename : content/canvas/test/reftest/webgl-hanging-scissor-test.html => dom/canvas/test/reftest/webgl-hanging-scissor-test.html
rename : content/canvas/test/reftest/webgl-orientation-test.html => dom/canvas/test/reftest/webgl-orientation-test.html
rename : content/canvas/test/reftest/webgl-resize-test.html => dom/canvas/test/reftest/webgl-resize-test.html
rename : content/canvas/test/reftest/webgl-utils.js => dom/canvas/test/reftest/webgl-utils.js
rename : content/canvas/test/reftest/white-top-left.png => dom/canvas/test/reftest/white-top-left.png
rename : content/canvas/test/reftest/white.png => dom/canvas/test/reftest/white.png
rename : content/canvas/test/reftest/wrapper.html => dom/canvas/test/reftest/wrapper.html
rename : content/canvas/test/test_2d.clearRect.image.offscreen.html => dom/canvas/test/test_2d.clearRect.image.offscreen.html
rename : content/canvas/test/test_2d.clip.winding.html => dom/canvas/test/test_2d.clip.winding.html
rename : content/canvas/test/test_2d.composite.canvas.color-burn.html => dom/canvas/test/test_2d.composite.canvas.color-burn.html
rename : content/canvas/test/test_2d.composite.canvas.color-dodge.html => dom/canvas/test/test_2d.composite.canvas.color-dodge.html
rename : content/canvas/test/test_2d.composite.canvas.color.html => dom/canvas/test/test_2d.composite.canvas.color.html
rename : content/canvas/test/test_2d.composite.canvas.darken.html => dom/canvas/test/test_2d.composite.canvas.darken.html
rename : content/canvas/test/test_2d.composite.canvas.destination-atop.html => dom/canvas/test/test_2d.composite.canvas.destination-atop.html
rename : content/canvas/test/test_2d.composite.canvas.destination-in.html => dom/canvas/test/test_2d.composite.canvas.destination-in.html
rename : content/canvas/test/test_2d.composite.canvas.difference.html => dom/canvas/test/test_2d.composite.canvas.difference.html
rename : content/canvas/test/test_2d.composite.canvas.exclusion.html => dom/canvas/test/test_2d.composite.canvas.exclusion.html
rename : content/canvas/test/test_2d.composite.canvas.hard-light.html => dom/canvas/test/test_2d.composite.canvas.hard-light.html
rename : content/canvas/test/test_2d.composite.canvas.hue.html => dom/canvas/test/test_2d.composite.canvas.hue.html
rename : content/canvas/test/test_2d.composite.canvas.lighten.html => dom/canvas/test/test_2d.composite.canvas.lighten.html
rename : content/canvas/test/test_2d.composite.canvas.lighter.html => dom/canvas/test/test_2d.composite.canvas.lighter.html
rename : content/canvas/test/test_2d.composite.canvas.luminosity.html => dom/canvas/test/test_2d.composite.canvas.luminosity.html
rename : content/canvas/test/test_2d.composite.canvas.multiply.html => dom/canvas/test/test_2d.composite.canvas.multiply.html
rename : content/canvas/test/test_2d.composite.canvas.overlay.html => dom/canvas/test/test_2d.composite.canvas.overlay.html
rename : content/canvas/test/test_2d.composite.canvas.saturation.html => dom/canvas/test/test_2d.composite.canvas.saturation.html
rename : content/canvas/test/test_2d.composite.canvas.screen.html => dom/canvas/test/test_2d.composite.canvas.screen.html
rename : content/canvas/test/test_2d.composite.canvas.soft-light.html => dom/canvas/test/test_2d.composite.canvas.soft-light.html
rename : content/canvas/test/test_2d.composite.canvas.source-in.html => dom/canvas/test/test_2d.composite.canvas.source-in.html
rename : content/canvas/test/test_2d.composite.canvas.source-out.html => dom/canvas/test/test_2d.composite.canvas.source-out.html
rename : content/canvas/test/test_2d.composite.canvas.xor.html => dom/canvas/test/test_2d.composite.canvas.xor.html
rename : content/canvas/test/test_2d.composite.clip.lighter.html => dom/canvas/test/test_2d.composite.clip.lighter.html
rename : content/canvas/test/test_2d.composite.clip.xor.html => dom/canvas/test/test_2d.composite.clip.xor.html
rename : content/canvas/test/test_2d.composite.image.destination-atop.html => dom/canvas/test/test_2d.composite.image.destination-atop.html
rename : content/canvas/test/test_2d.composite.image.destination-in.html => dom/canvas/test/test_2d.composite.image.destination-in.html
rename : content/canvas/test/test_2d.composite.image.lighter.html => dom/canvas/test/test_2d.composite.image.lighter.html
rename : content/canvas/test/test_2d.composite.image.source-in.html => dom/canvas/test/test_2d.composite.image.source-in.html
rename : content/canvas/test/test_2d.composite.image.source-out.html => dom/canvas/test/test_2d.composite.image.source-out.html
rename : content/canvas/test/test_2d.composite.image.xor.html => dom/canvas/test/test_2d.composite.image.xor.html
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600 lines
21 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WebGLElementArrayCache.h"
#include "mozilla/Assertions.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/MathAlgorithms.h"
#include <cstdlib>
#include <cstring>
#include <limits>
#include <algorithm>
namespace mozilla {
static void
UpdateUpperBound(uint32_t* out_upperBound, uint32_t newBound)
{
MOZ_ASSERT(out_upperBound);
*out_upperBound = std::max(*out_upperBound, newBound);
}
/*
* WebGLElementArrayCacheTree contains most of the implementation of WebGLElementArrayCache,
* which performs WebGL element array buffer validation for drawElements.
*
* Attention: Here lie nontrivial data structures, bug-prone algorithms, and non-canonical tweaks!
* Whence the explanatory comments, and compiled unit test.
*
* *** What problem are we solving here? ***
*
* WebGL::DrawElements has to validate that the elements are in range wrt the current vertex attribs.
* This boils down to the problem, given an array of integers, of computing the maximum in an arbitrary
* sub-array. The naive algorithm has linear complexity; this has been a major performance problem,
* see bug 569431. In that bug, we took the approach of caching the max for the whole array, which
* does cover most cases (DrawElements typically consumes the whole element array buffer) but doesn't
* help in other use cases:
* - when doing "partial DrawElements" i.e. consuming only part of the element array buffer
* - when doing frequent "partial buffer updates" i.e. bufferSubData calls updating parts of the
* element array buffer
*
* *** The solution: a binary tree ***
*
* The solution implemented here is to use a binary tree as the cache data structure. Each tree node
* contains the max of its two children nodes. In this way, finding the maximum in any contiguous sub-array
* has log complexity instead of linear complexity.
*
* Simplistically, if the element array is
*
* 1 4 3 2
*
* then the corresponding tree is
*
* 4
* _/ \_
* 4 3
* / \ / \
* 1 4 3 2
*
* In practice, the bottom-most levels of the tree are both the largest to store (because they
* have more nodes), and the least useful performance-wise (because each node in the bottom
* levels concerns only few entries in the elements array buffer, it is cheap to compute).
*
* For this reason, we stop the tree a few levels above, so that each tree leaf actually corresponds
* to more than one element array entry.
*
* The number of levels that we "drop" is |sSkippedBottomTreeLevels| and the number of element array entries
* that each leaf corresponds to, is |sElementsPerLeaf|. This being a binary tree, we have
*
* sElementsPerLeaf = 2 ^ sSkippedBottomTreeLevels.
*
* *** Storage layout of the binary tree ***
*
* We take advantage of the specifics of the situation to avoid generalist tree storage and instead
* store the tree entries in a vector, mTreeData.
*
* TreeData is always a vector of length
*
* 2 * (number of leaves).
*
* Its data layout is as follows: mTreeData[0] is unused, mTreeData[1] is the root node,
* then at offsets 2..3 is the tree level immediately below the root node, then at offsets 4..7
* is the tree level below that, etc.
*
* The figure below illustrates this by writing at each tree node the offset into mTreeData at
* which it is stored:
*
* 1
* _/ \_
* 2 3
* / \ / \
* 4 5 6 7
* ...
*
* Thus, under the convention that the root level is level 0, we see that level N is stored at offsets
*
* [ 2^n .. 2^(n+1) - 1 ]
*
* in mTreeData. Likewise, all the usual tree operations have simple mathematical expressions in
* terms of mTreeData offsets, see all the methods such as ParentNode, LeftChildNode, etc.
*
* *** Design constraint: element types aren't known at buffer-update time ***
*
* Note that a key constraint that we're operating under, is that we don't know the types of the elements
* by the time WebGL bufferData/bufferSubData methods are called. The type of elements is only
* specified in the drawElements call. This means that we may potentially have to store caches for
* multiple element types, for the same element array buffer. Since we don't know yet how many
* element types we'll eventually support (extensions add more), the concern about memory usage is serious.
* This is addressed by sSkippedBottomTreeLevels as explained above. Of course, in the typical
* case where each element array buffer is only ever used with one type, this is also addressed
* by having WebGLElementArrayCache lazily create trees for each type only upon first use.
*
* Another consequence of this constraint is that when updating the trees, we have to update
* all existing trees. So if trees for types uint8_t, uint16_t and uint32_t have ever been constructed for this buffer,
* every subsequent update will have to update all trees even if one of the types is never
* used again. That's inefficient, but content should not put indices of different types in the
* same element array buffer anyways. Different index types can only be consumed in separate
* drawElements calls, so nothing particular is to be achieved by lumping them in the same
* buffer object.
*/
template<typename T>
struct WebGLElementArrayCacheTree
{
// A too-high sSkippedBottomTreeLevels would harm the performance of small drawElements calls
// A too-low sSkippedBottomTreeLevels would cause undue memory usage.
// The current value has been validated by some benchmarking. See bug 732660.
static const size_t sSkippedBottomTreeLevels = 3;
static const size_t sElementsPerLeaf = 1 << sSkippedBottomTreeLevels;
static const size_t sElementsPerLeafMask = sElementsPerLeaf - 1; // sElementsPerLeaf is POT
private:
// The WebGLElementArrayCache that owns this tree
WebGLElementArrayCache& mParent;
// The tree's internal data storage. Its length is 2 * (number of leaves)
// because of its data layout explained in the above class comment.
FallibleTArray<T> mTreeData;
public:
// Constructor. Takes a reference to the WebGLElementArrayCache that is to be
// the parent. Does not initialize the tree. Should be followed by a call
// to Update() to attempt initializing the tree.
WebGLElementArrayCacheTree(WebGLElementArrayCache& p)
: mParent(p)
{
}
T GlobalMaximum() const {
return mTreeData[1];
}
// returns the index of the parent node; if treeIndex=1 (the root node),
// the return value is 0.
static size_t ParentNode(size_t treeIndex) {
MOZ_ASSERT(treeIndex > 1);
return treeIndex >> 1;
}
static bool IsRightNode(size_t treeIndex) {
MOZ_ASSERT(treeIndex > 1);
return treeIndex & 1;
}
static bool IsLeftNode(size_t treeIndex) {
MOZ_ASSERT(treeIndex > 1);
return !IsRightNode(treeIndex);
}
static size_t SiblingNode(size_t treeIndex) {
MOZ_ASSERT(treeIndex > 1);
return treeIndex ^ 1;
}
static size_t LeftChildNode(size_t treeIndex) {
MOZ_ASSERT(treeIndex);
return treeIndex << 1;
}
static size_t RightChildNode(size_t treeIndex) {
MOZ_ASSERT(treeIndex);
return SiblingNode(LeftChildNode(treeIndex));
}
static size_t LeftNeighborNode(size_t treeIndex, size_t distance = 1) {
MOZ_ASSERT(treeIndex > 1);
return treeIndex - distance;
}
static size_t RightNeighborNode(size_t treeIndex, size_t distance = 1) {
MOZ_ASSERT(treeIndex > 1);
return treeIndex + distance;
}
size_t NumLeaves() const {
// see class comment for why we the tree storage size is 2 * numLeaves
return mTreeData.Length() >> 1;
}
size_t LeafForElement(size_t element) const {
size_t leaf = element / sElementsPerLeaf;
MOZ_ASSERT(leaf < NumLeaves());
return leaf;
}
size_t LeafForByte(size_t byte) const {
return LeafForElement(byte / sizeof(T));
}
// Returns the index, into the tree storage, where a given leaf is stored
size_t TreeIndexForLeaf(size_t leaf) const {
// See above class comment. The tree storage is an array of length 2 * numLeaves.
// The leaves are stored in its second half.
return leaf + NumLeaves();
}
static size_t LastElementUnderSameLeaf(size_t element) {
return element | sElementsPerLeafMask;
}
static size_t FirstElementUnderSameLeaf(size_t element) {
return element & ~sElementsPerLeafMask;
}
static size_t NextMultipleOfElementsPerLeaf(size_t numElements) {
MOZ_ASSERT(numElements >= 1);
return ((numElements - 1) | sElementsPerLeafMask) + 1;
}
bool Validate(T maxAllowed, size_t firstLeaf, size_t lastLeaf,
uint32_t* out_upperBound)
{
size_t firstTreeIndex = TreeIndexForLeaf(firstLeaf);
size_t lastTreeIndex = TreeIndexForLeaf(lastLeaf);
while (true) {
// given that we tweak these values in nontrivial ways, it doesn't hurt to do
// this sanity check
MOZ_ASSERT(firstTreeIndex <= lastTreeIndex);
// final case where there is only 1 node to validate at the current tree level
if (lastTreeIndex == firstTreeIndex) {
const T& curData = mTreeData[firstTreeIndex];
UpdateUpperBound(out_upperBound, curData);
return curData <= maxAllowed;
}
// if the first node at current tree level is a right node, handle it individually
// and replace it with its right neighbor, which is a left node
if (IsRightNode(firstTreeIndex)) {
const T& curData = mTreeData[firstTreeIndex];
UpdateUpperBound(out_upperBound, curData);
if (curData > maxAllowed)
return false;
firstTreeIndex = RightNeighborNode(firstTreeIndex);
}
// if the last node at current tree level is a left node, handle it individually
// and replace it with its left neighbor, which is a right node
if (IsLeftNode(lastTreeIndex)) {
const T& curData = mTreeData[lastTreeIndex];
UpdateUpperBound(out_upperBound, curData);
if (curData > maxAllowed)
return false;
lastTreeIndex = LeftNeighborNode(lastTreeIndex);
}
// at this point it can happen that firstTreeIndex and lastTreeIndex "crossed" each
// other. That happens if firstTreeIndex was a right node and lastTreeIndex was its
// right neighor: in that case, both above tweaks happened and as a result, they ended
// up being swapped: lastTreeIndex is now the _left_ neighbor of firstTreeIndex.
// When that happens, there is nothing left to validate.
if (lastTreeIndex == LeftNeighborNode(firstTreeIndex)) {
return true;
}
// walk up 1 level
firstTreeIndex = ParentNode(firstTreeIndex);
lastTreeIndex = ParentNode(lastTreeIndex);
}
}
// Updates the tree from the parent's buffer contents. Fallible, as it
// may have to resize the tree storage.
bool Update(size_t firstByte, size_t lastByte);
size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
return aMallocSizeOf(this) + mTreeData.SizeOfExcludingThis(aMallocSizeOf);
}
};
// TreeForType: just a template helper to select the right tree object for a given
// element type.
template<typename T>
struct TreeForType {};
template<>
struct TreeForType<uint8_t>
{
static ScopedDeletePtr<WebGLElementArrayCacheTree<uint8_t>>&
Value(WebGLElementArrayCache *b) {
return b->mUint8Tree;
}
};
template<>
struct TreeForType<uint16_t>
{
static ScopedDeletePtr<WebGLElementArrayCacheTree<uint16_t>>&
Value(WebGLElementArrayCache *b) {
return b->mUint16Tree;
}
};
template<>
struct TreeForType<uint32_t>
{
static ScopedDeletePtr<WebGLElementArrayCacheTree<uint32_t>>&
Value(WebGLElementArrayCache *b) {
return b->mUint32Tree;
}
};
// Calling this method will 1) update the leaves in this interval
// from the raw buffer data, and 2) propagate this update up the tree
template<typename T>
bool WebGLElementArrayCacheTree<T>::Update(size_t firstByte, size_t lastByte)
{
MOZ_ASSERT(firstByte <= lastByte);
MOZ_ASSERT(lastByte < mParent.mBytes.Length());
size_t numberOfElements = mParent.mBytes.Length() / sizeof(T);
size_t requiredNumLeaves = 0;
if (numberOfElements > 0) {
// If we didn't require the number of leaves to be a power of two, then
// it would just be equal to
//
// ceil(numberOfElements / sElementsPerLeaf)
//
// The way we implement this (division+ceil) operation in integer arithmetic
// is as follows:
size_t numLeavesNonPOT = (numberOfElements + sElementsPerLeaf - 1) / sElementsPerLeaf;
// It only remains to round that up to the next power of two:
requiredNumLeaves = RoundUpPow2(numLeavesNonPOT);
}
// Step #0: if needed, resize our tree data storage.
if (requiredNumLeaves != NumLeaves()) {
// see class comment for why we the tree storage size is 2 * numLeaves
if (!mTreeData.SetLength(2 * requiredNumLeaves)) {
mTreeData.SetLength(0);
return false;
}
MOZ_ASSERT(NumLeaves() == requiredNumLeaves);
if (NumLeaves()) {
// when resizing, update the whole tree, not just the subset corresponding
// to the part of the buffer being updated.
memset(mTreeData.Elements(), 0, mTreeData.Length() * sizeof(T));
firstByte = 0;
lastByte = mParent.mBytes.Length() - 1;
}
}
if (NumLeaves() == 0) {
return true;
}
lastByte = std::min(lastByte, NumLeaves() * sElementsPerLeaf * sizeof(T) - 1);
if (firstByte > lastByte) {
return true;
}
size_t firstLeaf = LeafForByte(firstByte);
size_t lastLeaf = LeafForByte(lastByte);
MOZ_ASSERT(firstLeaf <= lastLeaf && lastLeaf < NumLeaves());
size_t firstTreeIndex = TreeIndexForLeaf(firstLeaf);
size_t lastTreeIndex = TreeIndexForLeaf(lastLeaf);
// Step #1: initialize the tree leaves from plain buffer data.
// That is, each tree leaf must be set to the max of the |sElementsPerLeaf| corresponding
// buffer entries.
// condition-less scope to prevent leaking this scope's variables into the code below
{
// treeIndex is the index of the tree leaf we're writing, i.e. the destination index
size_t treeIndex = firstTreeIndex;
// srcIndex is the index in the source buffer
size_t srcIndex = firstLeaf * sElementsPerLeaf;
while (treeIndex <= lastTreeIndex) {
T m = 0;
size_t a = srcIndex;
size_t srcIndexNextLeaf = std::min(a + sElementsPerLeaf, numberOfElements);
for (; srcIndex < srcIndexNextLeaf; srcIndex++) {
m = std::max(m, mParent.Element<T>(srcIndex));
}
mTreeData[treeIndex] = m;
treeIndex++;
}
}
// Step #2: propagate the values up the tree. This is simply a matter of walking up
// the tree and setting each node to the max of its two children.
while (firstTreeIndex > 1) {
// move up 1 level
firstTreeIndex = ParentNode(firstTreeIndex);
lastTreeIndex = ParentNode(lastTreeIndex);
// fast-exit case where only one node is updated at the current level
if (firstTreeIndex == lastTreeIndex) {
mTreeData[firstTreeIndex] = std::max(mTreeData[LeftChildNode(firstTreeIndex)], mTreeData[RightChildNode(firstTreeIndex)]);
continue;
}
size_t child = LeftChildNode(firstTreeIndex);
size_t parent = firstTreeIndex;
while (parent <= lastTreeIndex)
{
T a = mTreeData[child];
child = RightNeighborNode(child);
T b = mTreeData[child];
child = RightNeighborNode(child);
mTreeData[parent] = std::max(a, b);
parent = RightNeighborNode(parent);
}
}
return true;
}
WebGLElementArrayCache::WebGLElementArrayCache() {
}
WebGLElementArrayCache::~WebGLElementArrayCache() {
}
bool WebGLElementArrayCache::BufferData(const void* ptr, size_t byteLength) {
if (mBytes.Length() != byteLength) {
if (!mBytes.SetLength(byteLength)) {
mBytes.SetLength(0);
return false;
}
}
MOZ_ASSERT(mBytes.Length() == byteLength);
return BufferSubData(0, ptr, byteLength);
}
bool WebGLElementArrayCache::BufferSubData(size_t pos, const void* ptr, size_t updateByteLength) {
MOZ_ASSERT(pos + updateByteLength <= mBytes.Length());
if (!updateByteLength)
return true;
if (ptr)
memcpy(mBytes.Elements() + pos, ptr, updateByteLength);
else
memset(mBytes.Elements() + pos, 0, updateByteLength);
return UpdateTrees(pos, pos + updateByteLength - 1);
}
bool WebGLElementArrayCache::UpdateTrees(size_t firstByte, size_t lastByte)
{
bool result = true;
if (mUint8Tree)
result &= mUint8Tree->Update(firstByte, lastByte);
if (mUint16Tree)
result &= mUint16Tree->Update(firstByte, lastByte);
if (mUint32Tree)
result &= mUint32Tree->Update(firstByte, lastByte);
return result;
}
template<typename T>
bool
WebGLElementArrayCache::Validate(uint32_t maxAllowed, size_t firstElement,
size_t countElements, uint32_t* out_upperBound)
{
*out_upperBound = 0;
// if maxAllowed is >= the max T value, then there is no way that a T index could be invalid
uint32_t maxTSize = std::numeric_limits<T>::max();
if (maxAllowed >= maxTSize) {
UpdateUpperBound(out_upperBound, maxTSize);
return true;
}
T maxAllowedT(maxAllowed);
// integer overflow must have been handled earlier, so we assert that maxAllowedT
// is exactly the max allowed value.
MOZ_ASSERT(uint32_t(maxAllowedT) == maxAllowed);
if (!mBytes.Length() || !countElements)
return true;
ScopedDeletePtr<WebGLElementArrayCacheTree<T>>& tree = TreeForType<T>::Value(this);
if (!tree) {
tree = new WebGLElementArrayCacheTree<T>(*this);
if (mBytes.Length()) {
bool valid = tree->Update(0, mBytes.Length() - 1);
if (!valid) {
// Do not assert here. This case would happen if an allocation failed.
// We've already settled on fallible allocations around here.
tree = nullptr;
return false;
}
}
}
size_t lastElement = firstElement + countElements - 1;
// fast exit path when the global maximum for the whole element array buffer
// falls in the allowed range
T globalMax = tree->GlobalMaximum();
if (globalMax <= maxAllowedT)
{
UpdateUpperBound(out_upperBound, globalMax);
return true;
}
const T* elements = Elements<T>();
// before calling tree->Validate, we have to validate ourselves the boundaries of the elements span,
// to round them to the nearest multiple of sElementsPerLeaf.
size_t firstElementAdjustmentEnd = std::min(lastElement,
tree->LastElementUnderSameLeaf(firstElement));
while (firstElement <= firstElementAdjustmentEnd) {
const T& curData = elements[firstElement];
UpdateUpperBound(out_upperBound, curData);
if (curData > maxAllowedT)
return false;
firstElement++;
}
size_t lastElementAdjustmentEnd = std::max(firstElement,
tree->FirstElementUnderSameLeaf(lastElement));
while (lastElement >= lastElementAdjustmentEnd) {
const T& curData = elements[lastElement];
UpdateUpperBound(out_upperBound, curData);
if (curData > maxAllowedT)
return false;
lastElement--;
}
// at this point, for many tiny validations, we're already done.
if (firstElement > lastElement)
return true;
// general case
return tree->Validate(maxAllowedT,
tree->LeafForElement(firstElement),
tree->LeafForElement(lastElement),
out_upperBound);
}
bool
WebGLElementArrayCache::Validate(GLenum type, uint32_t maxAllowed,
size_t firstElement, size_t countElements,
uint32_t* out_upperBound)
{
if (type == LOCAL_GL_UNSIGNED_BYTE)
return Validate<uint8_t>(maxAllowed, firstElement, countElements, out_upperBound);
if (type == LOCAL_GL_UNSIGNED_SHORT)
return Validate<uint16_t>(maxAllowed, firstElement, countElements, out_upperBound);
if (type == LOCAL_GL_UNSIGNED_INT)
return Validate<uint32_t>(maxAllowed, firstElement, countElements, out_upperBound);
MOZ_ASSERT(false, "Invalid type.");
return false;
}
size_t
WebGLElementArrayCache::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
{
size_t uint8TreeSize = mUint8Tree ? mUint8Tree->SizeOfIncludingThis(aMallocSizeOf) : 0;
size_t uint16TreeSize = mUint16Tree ? mUint16Tree->SizeOfIncludingThis(aMallocSizeOf) : 0;
size_t uint32TreeSize = mUint32Tree ? mUint32Tree->SizeOfIncludingThis(aMallocSizeOf) : 0;
return aMallocSizeOf(this) +
mBytes.SizeOfExcludingThis(aMallocSizeOf) +
uint8TreeSize +
uint16TreeSize +
uint32TreeSize;
}
bool
WebGLElementArrayCache::BeenUsedWithMultipleTypes() const
{
// C++ Standard ($4.7)
// "If the source type is bool, the value false is converted to zero and
// the value true is converted to one."
const int num_types_used = (mUint8Tree != nullptr) +
(mUint16Tree != nullptr) +
(mUint32Tree != nullptr);
return num_types_used > 1;
}
} // end namespace mozilla