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We were calling this from the CI span function, but not the RGBA
span function.
I don't know of a test program for the GL_EXT_depth_bounds_test
extension...
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The integer Z clamping range depends on the number of bits
in the Z buffer because that's the scale factor used when we
transform NDC coords by the viewport/depth range.
Fixes fd.o bug #25972 but only for Z buffers up to a depth
of 30 bits. Beyond that we get into messy integer overflow
issues and things fall apart.
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On r100 we emit the indices inline so we need to account
for that in the emission size.
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This bug was fixed in libdrm ages ago, port to non-kms
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Signed-off-by: Dan Nicholson <dbn.lists@gmail.com>
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_mesa_Ortho() takes GLdoubles.
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Based on a patch submitted by Pierre Willenbrock <pierre@pirsoft.de>
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This fixes mipmap levels being clipped to the last viewport.
Based on a patch submitted by Pierre Willenbrock <pierre@pirsoft.de>
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