Paul Berry <stereotype...@gmail.com> writes:
> Previously, Mesa code assumed that glReadBuffer(GL_NONE) was only
> valid for user-created framebuffer objects. However, the spec is
> quite clear that is should also be valid for the default framebuffer.
> From section 18.2.1 ("Obtaining Pixels from the Framebuffer") of the
> GL 4.3 spec:
>
> "When READ_FRAMEBUFFER_BINDING is zero, i.e. the default
> framebuffer, src must be one of the values listed in table 17.4,
> including NONE."
>
> Similar language exists in the GLES 3.0 spec, and in desktop GL all
> the way back to ARB_framebuffer_object.Even farther, back to EXT_framebuffer_object, too! Reviewed-by: Eric Anholt <e...@anholt.net>
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