diff options
| author | Luca Barbieri <[email protected]> | 2009-12-26 08:12:15 +0100 |
|---|---|---|
| committer | Younes Manton <[email protected]> | 2009-12-28 17:59:00 -0500 |
| commit | a55e50b082ca068d35d695ff323603507e2b64aa (patch) | |
| tree | 6eab5bf9a219443e6e4fc1f92d897b5f9f4a66ec /src/gallium/drivers/nv40 | |
| parent | 926562fe271a031774d1aae850e955c2180f2816 (diff) | |
NV30/NV40 CMP and SCS src == dst handling
CMP and SCS can produce incorrect results if the source and
destination are the same.
This patch should fix the issues.
CMP is fixed by predicating both moves.
SCS by changing the order if the source component is X.
Diffstat (limited to 'src/gallium/drivers/nv40')
| -rw-r--r-- | src/gallium/drivers/nv40/nv40_fragprog.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/src/gallium/drivers/nv40/nv40_fragprog.c b/src/gallium/drivers/nv40/nv40_fragprog.c index 1bf16726d10..468d3509a98 100644 --- a/src/gallium/drivers/nv40/nv40_fragprog.c +++ b/src/gallium/drivers/nv40/nv40_fragprog.c @@ -445,10 +445,11 @@ nv40_fragprog_parse_instruction(struct nv40_fpc *fpc, arith(fpc, sat, ADD, dst, mask, src[0], src[1], none); break; case TGSI_OPCODE_CMP: - tmp = temp(fpc); - arith(fpc, sat, MOV, dst, mask, src[2], none, none); + tmp = nv40_sr(NV40SR_NONE, 0); tmp.cc_update = 1; arith(fpc, 0, MOV, tmp, 0xf, src[0], none, none); + dst.cc_test = NV40_VP_INST_COND_GE; + arith(fpc, sat, MOV, dst, mask, src[2], none, none); dst.cc_test = NV40_VP_INST_COND_LT; arith(fpc, sat, MOV, dst, mask, src[1], none, none); break; @@ -573,13 +574,28 @@ nv40_fragprog_parse_instruction(struct nv40_fpc *fpc, neg(swz(tmp, X, X, X, X)), none, none); break; case TGSI_OPCODE_SCS: - if (mask & MASK_X) { - arith(fpc, sat, COS, dst, MASK_X, - swz(src[0], X, X, X, X), none, none); + /* avoid overwriting the source */ + if(src[0].swz[SWZ_X] != SWZ_X) + { + if (mask & MASK_X) { + arith(fpc, sat, COS, dst, MASK_X, + swz(src[0], X, X, X, X), none, none); + } + if (mask & MASK_Y) { + arith(fpc, sat, SIN, dst, MASK_Y, + swz(src[0], X, X, X, X), none, none); + } } - if (mask & MASK_Y) { - arith(fpc, sat, SIN, dst, MASK_Y, - swz(src[0], X, X, X, X), none, none); + else + { + if (mask & MASK_Y) { + arith(fpc, sat, SIN, dst, MASK_Y, + swz(src[0], X, X, X, X), none, none); + } + if (mask & MASK_X) { + arith(fpc, sat, COS, dst, MASK_X, + swz(src[0], X, X, X, X), none, none); + } } break; case TGSI_OPCODE_SEQ: |