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1 /* | 1 /* |
2 * Copyright (C) 2009 Apple Inc. All rights reserved. | 2 * Copyright (C) 2009 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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1004 } | 1004 } |
1005 | 1005 |
1006 void WebGLRenderingContextBase::reshape(int width, int height) | 1006 void WebGLRenderingContextBase::reshape(int width, int height) |
1007 { | 1007 { |
1008 if (isContextLost()) | 1008 if (isContextLost()) |
1009 return; | 1009 return; |
1010 | 1010 |
1011 // This is an approximation because at WebGLRenderingContextBase level we do
n't | 1011 // This is an approximation because at WebGLRenderingContextBase level we do
n't |
1012 // know if the underlying FBO uses textures or renderbuffers. | 1012 // know if the underlying FBO uses textures or renderbuffers. |
1013 GLint maxSize = std::min(m_maxTextureSize, m_maxRenderbufferSize); | 1013 GLint maxSize = std::min(m_maxTextureSize, m_maxRenderbufferSize); |
1014 // Limit drawing buffer size to 4k to avoid memory exhaustion. | |
1015 const int sizeUpperLimit = 4096; | |
1016 maxSize = std::min(maxSize, sizeUpperLimit); | |
1017 GLint maxWidth = std::min(maxSize, m_maxViewportDims[0]); | 1014 GLint maxWidth = std::min(maxSize, m_maxViewportDims[0]); |
1018 GLint maxHeight = std::min(maxSize, m_maxViewportDims[1]); | 1015 GLint maxHeight = std::min(maxSize, m_maxViewportDims[1]); |
1019 width = clamp(width, 1, maxWidth); | 1016 width = clamp(width, 1, maxWidth); |
1020 height = clamp(height, 1, maxHeight); | 1017 height = clamp(height, 1, maxHeight); |
1021 | 1018 |
1022 // We don't have to mark the canvas as dirty, since the newly created image
buffer will also start off | 1019 // We don't have to mark the canvas as dirty, since the newly created image
buffer will also start off |
1023 // clear (and this matches what reshape will do). | 1020 // clear (and this matches what reshape will do). |
1024 drawingBuffer()->reset(IntSize(width, height)); | 1021 drawingBuffer()->reset(IntSize(width, height)); |
1025 restoreStateAfterClear(); | 1022 restoreStateAfterClear(); |
1026 | 1023 |
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6025 return m_sharedWebGraphicsContext3D ? m_sharedWebGraphicsContext3D->drawingB
uffer() : 0; | 6022 return m_sharedWebGraphicsContext3D ? m_sharedWebGraphicsContext3D->drawingB
uffer() : 0; |
6026 } | 6023 } |
6027 #else | 6024 #else |
6028 DrawingBuffer* WebGLRenderingContextBase::drawingBuffer() const | 6025 DrawingBuffer* WebGLRenderingContextBase::drawingBuffer() const |
6029 { | 6026 { |
6030 return m_drawingBuffer.get(); | 6027 return m_drawingBuffer.get(); |
6031 } | 6028 } |
6032 #endif | 6029 #endif |
6033 | 6030 |
6034 } // namespace blink | 6031 } // namespace blink |
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