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-rw-r--r--src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp10
1 files changed, 10 insertions, 0 deletions
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp
index ed06def24ff..e283424844e 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp
@@ -797,6 +797,16 @@ NV50LoweringPreSSA::handleTXB(TexInstruction *i)
const CondCode cc[4] = { CC_EQU, CC_S, CC_C, CC_O };
int l, d;
+ // We can't actually apply bias *and* do a compare for a cube
+ // texture. Since the compare has to be done before the filtering, just
+ // drop the bias on the floor.
+ if (i->tex.target == TEX_TARGET_CUBE_SHADOW) {
+ i->op = OP_TEX;
+ i->setSrc(3, i->getSrc(4));
+ i->setSrc(4, NULL);
+ return handleTEX(i);
+ }
+
handleTEX(i);
Value *bias = i->getSrc(i->tex.target.getArgCount());
if (bias->isUniform())