[Nouveau] [Bug 89455] [NVC0/Gallium] Unigine Heaven black and white boxes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89455

--- Comment #2 from Ilia Mirkin <imirkin at alum.mit.edu> ---
This patch seems to improve things for me (on a GF108). Pretty sure this is
incomplete though.

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 248f98d..0420bf2 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
@@ -2433,6 +2433,8 @@ Converter::handleInstruction(const struct
tgsi_full_instruction *insn)
          src1 = fetchSrc(1, c);
          geni = mkOp2(op, dstTy, dst0[c], src0, src1);
          geni->subOp = tgsi::opcodeToSubOp(tgsi.getOpcode());
+         if (dstTy == TYPE_F32)
+            geni->ftz = true;
       }
       break;
    case TGSI_OPCODE_MAD:
@@ -2442,7 +2444,9 @@ Converter::handleInstruction(const struct
tgsi_full_instruction *insn)
          src0 = fetchSrc(0, c);
          src1 = fetchSrc(1, c);
          src2 = fetchSrc(2, c);
-         mkOp3(op, dstTy, dst0[c], src0, src1, src2);
+         geni = mkOp3(op, dstTy, dst0[c], src0, src1, src2);
+         if (dstTy == TYPE_F32)
+            geni->ftz = true;
       }
       break;
    case TGSI_OPCODE_MOV:

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