Module: Mesa
Branch: master
Commit: 08ddfe7b2fa9f577ba00c8c05c5604460942f5a8
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=08ddfe7b2fa9f577ba00c8c05c5604460942f5a8
Author: Samuel Pitoiset <samuel.pitoi...@gmail.com>
Date: Mon Jun 6 21:12:15 2016 +0200
nv50/ir: use round toward 0 when converting doubles to integers
Like floats, we should use the round toward 0 mode instead of the
nearest one (which is the default) for doubles to integers.
This fixes all arb_gpu_shader_fp64 piglits which convert doubles to
integers (16 tests).
Signed-off-by: Samuel Pitoiset <samuel.pitoi...@gmail.com>
Reviewed-by: Ilia Mirkin <imir...@alum.mit.edu>
Cc: "11.2 12.0" <mesa-sta...@lists.freedesktop.org>
---
src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
index cd98f70..beb7b53 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
@@ -3598,7 +3598,9 @@ Converter::handleInstruction(const struct
tgsi_full_instruction *insn)
src0 = fetchSrc(0, pos);
src1 = fetchSrc(0, pos + 1);
mkOp2(OP_MERGE, TYPE_U64, dreg, src0, src1);
- mkCvt(OP_CVT, dstTy, dst0[c], srcTy, dreg);
+ Instruction *cvt = mkCvt(OP_CVT, dstTy, dst0[c], srcTy, dreg);
+ if (!isFloatType(dstTy))
+ cvt->rnd = ROUND_Z;
pos += 2;
}
break;
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