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|  | This code was not updated when we added TGSI_SEMANTIC_FACE a while ago. | 
|  | 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... | 
|  | 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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|  | Do the auto trick that is used for both i915, i965 and svga. | 
|  | Conflicts:
	src/gallium/auxiliary/pipebuffer/pb_buffer_fenced.c
	src/gallium/auxiliary/util/Makefile
	src/gallium/drivers/r300/r300_state_derived.c | 
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|  | Conflicts:
	src/gallium/drivers/softpipe/sp_draw_arrays.c |