I am not sure if it is a bug.
The problem is if you call glGetTexImage on SRGB texture with a format
different to the internal format, you will get wrong data because
_mesa_get_teximage simply use memcpy on that.
I can image 2 solutions for this,
1. Add a nonlinear to linear transfer after FetchTexel1f call, this could be
very slow.
2. Add a no transfer version FetchTexel1f function-pointer to gl_texture_image,
this is nly used for SRGB on _mesa_get_teximage.
Which one is better?
Thanks
Zou Nan hai
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> Subject: [Mesa3d-dev] [Bug 11877] texture_srgb glGetTexImage failed
> forinternalFormat GL_SRGB_EXT
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> http://bugs.freedesktop.org/show_bug.cgi?id=11877
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