Module: Mesa
Branch: master
Commit: 66f55de31e15f97ad1d16c573756738218c02109
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=66f55de31e15f97ad1d16c573756738218c02109
Author: Fredrik Höglund <fred...@kde.org>
Date: Wed Dec 15 20:00:42 2010 +0100
r600g: fix pow(0, 0) evaluating to NaN
We have to use the non-IEEE compliant version of MUL here, since
log2(0) is -inf, and 0 * -inf is NaN in IEEE arithmetic.
candidates for 7.10 branch
---
src/gallium/drivers/r600/r600_shader.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/src/gallium/drivers/r600/r600_shader.c
b/src/gallium/drivers/r600/r600_shader.c
index d645502..9c7b7f0 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -1451,7 +1451,7 @@ static int tgsi_pow(struct r600_shader_ctx *ctx)
return r;
/* b * LOG2(a) */
memset(&alu, 0, sizeof(struct r600_bc_alu));
- alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_MUL_IEEE);
+ alu.inst = CTX_INST(V_SQ_ALU_WORD1_OP2_SQ_OP2_INST_MUL);
r = tgsi_src(ctx, &inst->Src[1], &alu.src[0]);
if (r)
return r;
_______________________________________________
mesa-commit mailing list
mesa-commit@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/mesa-commit
