radeonsi also does the same thing. I suspect that this is likely to be a
no-op in reality, but it brings nouveau code closer to what the blob
produces. Plus it makes sense to not try to do auto-derivatives on this.
Signed-off-by: Ilia Mirkin <imir...@alum.mit.edu>
---
src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp | 5 +++++
1 file changed, 5 insertions(+)
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 96bdd4e..80fbaed 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
@@ -2237,6 +2237,11 @@ Converter::handleTEX(Value *dst[4], int R, int S, int L,
int C, int Dx, int Dy)
if (tgsi.getOpcode() == TGSI_OPCODE_SAMPLE_C_LZ)
texi->tex.levelZero = true;
+ if (prog->getType() != Program::TYPE_FRAGMENT &&
+ (tgsi.getOpcode() == TGSI_OPCODE_TEX ||
+ tgsi.getOpcode() == TGSI_OPCODE_TEX2 ||
+ tgsi.getOpcode() == TGSI_OPCODE_TXP))
+ texi->tex.levelZero = true;
if (tgsi.getOpcode() == TGSI_OPCODE_TG4 && !tgt.isShadow())
texi->tex.gatherComp = tgsi.getSrc(1).getValueU32(0, info);
--
2.7.3
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