RESOLVED INVALID 48673
Implementation Color Read Format RGB565/UNSIGNED_SHORT 
https://bugs.webkit.org/show_bug.cgi?id=48673
Summary Implementation Color Read Format RGB565/UNSIGNED_SHORT
Zhenyao Mo
Reported 2010-10-29 14:12:45 PDT
WebGL spec: 6.12 Implementation Color Read Format In the OpenGL ES 2.0 API, the IMPLEMENTATION_COLOR_READ_FORMAT and IMPLEMENTATION_COLOR_READ_TYPE parameters are used to inform applications of an additional format and type combination that may be passed to ReadPixels, in addition to the required RGBA/UNSIGNED_BYTE pair. In the WebGL API, the required implementation read format and type is RGB565/UNSIGNED_SHORT to ensure interoperability. Extensions may be used to add additional allowed read formats.
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Zhenyao Mo
Comment 1 2010-10-29 15:00:05 PDT
On desktop GL backend, we should map RGB565 to RGB, UNSIGNED_SHORT to UNSIGNED_SHORT_5_6_5. On GLES backend, we should query if the implementation supports RGB565/UNSIGNED_SHORT. If not, we need to use RGBA/UNSIGNED_BYTE and then pack the data to RGB565/UNSIGNED_SHORT.
Zhenyao Mo
Comment 2 2010-11-03 13:25:26 PDT
Due to spec change, this is no longer valid.
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