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svga: check for NaN shader immediates

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The svga device doesn't handle them.  Replace with zeros.
Fixes several piglit tests, such as "glsl-const-builtin-inversesqrt".

Reviewed-by: Reviewed-by: José Fonseca <jfonseca@vmware.com>
(cherry picked from commit 3cb4915344)
This commit is contained in:
Brian Paul 2013-01-30 17:44:25 -07:00
parent cda92f5191
commit 26f802d063
1 changed files with 4 additions and 2 deletions
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6
src/gallium/drivers/svga/svga_tgsi_insn.c
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@ -2716,8 +2716,10 @@ static boolean svga_emit_immediate( struct svga_shader_emitter *emit,
unsigned i;
assert(1 <= imm->Immediate.NrTokens && imm->Immediate.NrTokens <= 5);
for (i = 0; i < imm->Immediate.NrTokens - 1; i++)
value[i] = imm->u[i].Float;
for (i = 0; i < imm->Immediate.NrTokens - 1; i++) {
float f = imm->u[i].Float;
value[i] = util_is_inf_or_nan(f) ? 0.0f : f;
}
for ( ; i < 4; i++ )
value[i] = id[i];