[Mesa-dev] [PATCH] st/mesa: fix FRAMEBUFFER_UNSUPPORTED with the D24S8 format

[Marek Olšák]

Hi,

the attached patch attempts to fix bogus reports of
GL_FRAMEBUFFER_UNSUPPORTED when there is a D24S8 texture attached as both
depth and stencil attachments. The problem is such a renderbuffer is of
GL_TEXTURE type which has not been handled properly in
st_validate_framebuffer.

The r300 classic driver doesn't have this issue, but it affects all Gallium
drivers. This feature appears to be mandatory in wine (Bug #29116). I've
also added a new piglit test for this: fbo-d24s8.

Please review.

Best regards.

-Marek
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