Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 341129414655facbed5a7a46f322b16a93028ac9
https://github.com/WebKit/WebKit/commit/341129414655facbed5a7a46f322b16a93028ac9
Author: Loïc Yhuel <[email protected]>
Date: 2024-05-23 (Thu, 23 May 2024)
Changed paths:
M Source/WebCore/platform/graphics/nicosia/NicosiaGCGLANGLELayer.cpp
M
Source/WebCore/platform/graphics/texmap/GraphicsContextGLTextureMapperANGLE.cpp
M
Source/WebCore/platform/graphics/texmap/GraphicsContextGLTextureMapperANGLE.h
M Source/WebCore/platform/graphics/texmap/TextureMapperGCGLPlatformLayer.cpp
Log Message:
-----------
[GTK][WPE] Do not display uninitialized WebGL front buffer
https://bugs.webkit.org/show_bug.cgi?id=274527
Reviewed by Miguel Gomez.
When a page creates a WebGL context, but does not render immediately, we
display the compositor
texture from GraphicsContextGLTextureMapperANGLE.
After reshapeDrawingBuffer (glTexImage2D with null data), the contents are
undefined as per the
OpenGL specification, and depending on the plaform this may display
uninitialized memory.
We now check if the texture is initialized before using it in
GCGLANGLELayer::swapBuffersIfNeeded
or TextureMapperGCGLPlatformLayer::paintToTextureMapper.
* Source/WebCore/platform/graphics/nicosia/NicosiaGCGLANGLELayer.cpp:
(Nicosia::GCGLANGLELayer::swapBuffersIfNeeded):
*
Source/WebCore/platform/graphics/texmap/GraphicsContextGLTextureMapperANGLE.cpp:
(WebCore::GraphicsContextGLTextureMapperANGLE::swapCompositorTexture):
(WebCore::GraphicsContextGLTextureMapperANGLE::reshapeDrawingBuffer):
* Source/WebCore/platform/graphics/texmap/GraphicsContextGLTextureMapperANGLE.h:
* Source/WebCore/platform/graphics/texmap/TextureMapperGCGLPlatformLayer.cpp:
(WebCore::TextureMapperGCGLPlatformLayer::paintToTextureMapper):
Canonical link: https://commits.webkit.org/279206@main
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