diff options
| author | Luca Barbieri <luca@luca-barbieri.com> | 2009-12-26 08:12:15 +0100 |
|---|---|---|
| committer | Younes Manton <younes.m@gmail.com> | 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 1bf16726d1..468d3509a9 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: |