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/nv30 | |
| 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/nv30')
| -rw-r--r-- | src/gallium/drivers/nv30/nv30_fragprog.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/src/gallium/drivers/nv30/nv30_fragprog.c b/src/gallium/drivers/nv30/nv30_fragprog.c index 40965a9772..dc4e583ce9 100644 --- a/src/gallium/drivers/nv30/nv30_fragprog.c +++ b/src/gallium/drivers/nv30/nv30_fragprog.c @@ -435,10 +435,11 @@ nv30_fragprog_parse_instruction(struct nv30_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 = nv30_sr(NV30SR_NONE, 0); tmp.cc_update = 1; arith(fpc, 0, MOV, tmp, 0xf, src[0], none, none); + dst.cc_test = NV30_VP_INST_COND_GE; + arith(fpc, sat, MOV, dst, mask, src[2], none, none); dst.cc_test = NV30_VP_INST_COND_LT; arith(fpc, sat, MOV, dst, mask, src[1], none, none); break; @@ -517,13 +518,28 @@ nv30_fragprog_parse_instruction(struct nv30_fpc *fpc, arith(fpc, sat, RSQ, dst, mask, abs(swz(src[0], 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_SIN: |