meta/blit: Use gl_FragColor also in the msaa blit shader
Fixes framebuffer_blit_functionality_multisampled_to_singlesampled_blit es3 cts test on bdw. Also fixes this on ivb when ivb is forced to use the meta path. No piglit regressions on IVB. Further input from Ken: "Unfortunately, this doesn't fix MRT for integer data. In the single-sampled case, since we're directly copying data, we were read/copy/write data as "float" values, which actually contained the integer bits. Here, we can't do that since we need to process the actual integer data. I do wonder if we could use intBitsToFloat/uintBitsToFloat to stuff the integer bits in the float gl_FragColor output. Just a crazy idea. In the long term (post 10.2), I think we should draft an extension that allows you to do "layout(location = all)" on user-defined fragment shader outputs. (Or some similar syntax.)" Signed-off-by:Topi Pohjolainen <topi.pohjolainen@intel.com> Cc: "10.2" <mesa-stable@lists.freedesktop.org> Reviewed-by:
Kenneth Graunke <kenneth@whitecape.org> Reviewed-by:
Anuj Phogat <anuj.phogat@gmail.com>