From 66f55de31e15f97ad1d16c573756738218c02109 Mon Sep 17 00:00:00 2001 From: Fredrik Höglund Date: Wed, 15 Dec 2010 20:00:42 +0100 Subject: 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 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/gallium') diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c index d6455023a3..9c7b7f0a57 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; -- cgit v1.2.3