From 1065aa92f4e448fbfe47c074f08dded1933a7f1f Mon Sep 17 00:00:00 2001 From: Ilia Mirkin Date: Fri, 4 Jul 2014 18:38:28 -0400 Subject: [PATCH] nv50/ir: ignore bias for samplerCubeShadow on nv50 Unfortunately there's no good way to do this on the nv50 shader isa. Dropping the bias seems preferable to doing the compare post-filtering. Signed-off-by: Ilia Mirkin Cc: --- .../drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp | 10 ++++++++++ 1 file changed, 10 insertions(+) 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()) -- 2.30.2