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dino@apple.com authored
https://webkit.org/b/120443 Reviewed by Simon Fraser. Source/WebCore: CoreGraphics can decode greyscale or greyscale+alpha images while preserving the format. Our WebGL texture unpacker was seeing this and assuming it meant the data did not come from an <img> element. Since that method already special cased CoreGraphics, the fix was to simply return true for these extra types. I also renamed srcFormatComeFromDOMElementOrImageData to srcFormatComesFromDOMElementOrImageData. Test: fast/canvas/webgl/tex-image-with-greyscale-image.html * platform/graphics/GraphicsContext3D.cpp: Call new name. * platform/graphics/GraphicsContext3D.h: (WebCore::GraphicsContext3D::srcFormatComesFromDOMElementOrImageData): Add support for R8, AR8, A8, and RA8 data formats. LayoutTests: New test that attempts to load and draw an image that only has grey and alpha channels. * fast/canvas/webgl/resources/greyscale.png: Added. * fast/canvas/webgl/tex-image-with-greyscale-image-expected.txt: Added. * fast/canvas/webgl/tex-image-with-greyscale-image.html: Added. git-svn-id: http://svn.webkit.org/repository/webkit/trunk@154793 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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