On 07/20/2012 02:40 PM, Eric Anholt wrote:
Brian Paul<[email protected]> writes:
Since sqrt(x) is typically implemented with a reciprocal square root, zero
is a special case. Mesa's GLSL->TGSI translator uses a CND instruction to
return 0 if x<=0.
Looks like these tests already the issue more generally:
generated_tests/spec/glsl-1.10/execution/built-in-functions/fs-sqrt-float.shader_test
generated_tests/spec/glsl-1.20/compiler/built-in-functions/sqrt-float.frag
so I think my old sqrt-zero code could just be removed.
OK, sounds good. I'll take that as a R-b.
-Brian
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