Source/modules/webgl/WebGL2RenderingContextBase.cpp - Issue 1300573002: WebGL 2: add readPixels API to read pixels into pixel pack buffer

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Issue 1300573002: WebGL 2: add readPixels API to read pixels into pixel pack buffer (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Created 5 years, 4 months ago

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1 // Copyright 2015 The Chromium Authors. All rights reserved.	1 // Copyright 2015 The Chromium Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style license that can be	2 // Use of this source code is governed by a BSD-style license that can be

3 // found in the LICENSE file.	3 // found in the LICENSE file.

4	4

5 #include "config.h"	5 #include "config.h"

6 #include "modules/webgl/WebGL2RenderingContextBase.h"	6 #include "modules/webgl/WebGL2RenderingContextBase.h"

7	7

8 #include "bindings/modules/v8/WebGLAny.h"	8 #include "bindings/modules/v8/WebGLAny.h"

9 #include "core/html/HTMLCanvasElement.h"	9 #include "core/html/HTMLCanvasElement.h"

10 #include "core/html/HTMLImageElement.h"	10 #include "core/html/HTMLImageElement.h"

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42 {	42 {

43	43

44 }	44 }

45	45

46 WebGL2RenderingContextBase::~WebGL2RenderingContextBase()	46 WebGL2RenderingContextBase::~WebGL2RenderingContextBase()

47 {	47 {

48 m_readFramebufferBinding = nullptr;	48 m_readFramebufferBinding = nullptr;

49	49

50 m_boundCopyReadBuffer = nullptr;	50 m_boundCopyReadBuffer = nullptr;

51 m_boundCopyWriteBuffer = nullptr;	51 m_boundCopyWriteBuffer = nullptr;

52 m_boundPixelPackBuffer = nullptr;

53 m_boundPixelUnpackBuffer = nullptr;	52 m_boundPixelUnpackBuffer = nullptr;

54 m_boundTransformFeedbackBuffer = nullptr;	53 m_boundTransformFeedbackBuffer = nullptr;

55 m_boundUniformBuffer = nullptr;	54 m_boundUniformBuffer = nullptr;

56	55

57 m_currentBooleanOcclusionQuery = nullptr;	56 m_currentBooleanOcclusionQuery = nullptr;

58 m_currentTransformFeedbackPrimitivesWrittenQuery = nullptr;	57 m_currentTransformFeedbackPrimitivesWrittenQuery = nullptr;

59 }	58 }

60	59

61 void WebGL2RenderingContextBase::initializeNewContext()	60 void WebGL2RenderingContextBase::initializeNewContext()

62 {	61 {

63 ASSERT(!isContextLost());	62 ASSERT(!isContextLost());

64 ASSERT(drawingBuffer());	63 ASSERT(drawingBuffer());

65	64

66 m_readFramebufferBinding = nullptr;	65 m_readFramebufferBinding = nullptr;

67	66

68 m_boundCopyReadBuffer = nullptr;	67 m_boundCopyReadBuffer = nullptr;

69 m_boundCopyWriteBuffer = nullptr;	68 m_boundCopyWriteBuffer = nullptr;

70 m_boundPixelPackBuffer = nullptr;

71 m_boundPixelUnpackBuffer = nullptr;	69 m_boundPixelUnpackBuffer = nullptr;

72 m_boundTransformFeedbackBuffer = nullptr;	70 m_boundTransformFeedbackBuffer = nullptr;

73 m_boundUniformBuffer = nullptr;	71 m_boundUniformBuffer = nullptr;

74	72

75 m_currentBooleanOcclusionQuery = nullptr;	73 m_currentBooleanOcclusionQuery = nullptr;

76 m_currentTransformFeedbackPrimitivesWrittenQuery = nullptr;	74 m_currentTransformFeedbackPrimitivesWrittenQuery = nullptr;

77	75

78 m_max3DTextureSize = 0;	76 m_max3DTextureSize = 0;

79 webContext()->getIntegerv(GL_MAX_3D_TEXTURE_SIZE, &m_max3DTextureSize);	77 webContext()->getIntegerv(GL_MAX_3D_TEXTURE_SIZE, &m_max3DTextureSize);

80 m_max3DTextureLevel = WebGLTexture::computeLevelCount(m_max3DTextureSize, m_ max3DTextureSize, m_max3DTextureSize);	78 m_max3DTextureLevel = WebGLTexture::computeLevelCount(m_max3DTextureSize, m_ max3DTextureSize, m_max3DTextureSize);

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2443 GLenum WebGL2RenderingContextBase::boundFramebufferColorFormat()	2441 GLenum WebGL2RenderingContextBase::boundFramebufferColorFormat()

2444 {	2442 {

2445 if (m_readFramebufferBinding && m_readFramebufferBinding->object())	2443 if (m_readFramebufferBinding && m_readFramebufferBinding->object())

2446 return m_readFramebufferBinding->colorBufferFormat();	2444 return m_readFramebufferBinding->colorBufferFormat();

2447 if (m_requestedAttributes.alpha())	2445 if (m_requestedAttributes.alpha())

2448 return GL_RGBA;	2446 return GL_RGBA;

2449 return GL_RGB;	2447 return GL_RGB;

2450 }	2448 }

2451	2449

2452 } // namespace blink	2450 } // namespace blink

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