diff options
| author | Christoph Bumiller <[email protected]> | 2011-04-10 13:55:01 +0200 |
|---|---|---|
| committer | Christoph Bumiller <[email protected]> | 2011-04-10 14:06:52 +0200 |
| commit | d546df4d9c090656c506e8a959646a48ed00efc2 (patch) | |
| tree | f291ac7cec4755d691ab14acc180b1937b6926cf /src/gallium/drivers/nvc0 | |
| parent | ee2a8ea7d9004c052916db79eac644ef51a9ccaa (diff) | |
nvc0: force perspective correction hint to nicest
Fixes issues in e.g. nexuiz (desertfactory) or supertuxkart that
look like lighting bugs.
They're not visible with the software rasterizers because their
notion of linear interpolation seems to be different from that
of nv50/nvc0.
Diffstat (limited to 'src/gallium/drivers/nvc0')
| -rw-r--r-- | src/gallium/drivers/nvc0/nvc0_pc_emit.c | 4 | ||||
| -rw-r--r-- | src/gallium/drivers/nvc0/nvc0_program.c | 3 |
2 files changed, 7 insertions, 0 deletions
diff --git a/src/gallium/drivers/nvc0/nvc0_pc_emit.c b/src/gallium/drivers/nvc0/nvc0_pc_emit.c index 76ad40dbcf8..6f409a9e925 100644 --- a/src/gallium/drivers/nvc0/nvc0_pc_emit.c +++ b/src/gallium/drivers/nvc0/nvc0_pc_emit.c @@ -715,6 +715,10 @@ emit_interp(struct nv_pc *pc, struct nv_instruction *i) if (i->opcode == NV_OP_PINTERP) { pc->emit[0] |= 0x040; SID(pc, i->src[1], 26); + + if (i->src[0]->value->reg.address >= 0x280 && + i->src[0]->value->reg.address <= 0x29c) + pc->emit[0] |= 0x080; /* XXX: ? */ } else { SID(pc, NULL, 26); } diff --git a/src/gallium/drivers/nvc0/nvc0_program.c b/src/gallium/drivers/nvc0/nvc0_program.c index 3c59213176e..383bc30f20b 100644 --- a/src/gallium/drivers/nvc0/nvc0_program.c +++ b/src/gallium/drivers/nvc0/nvc0_program.c @@ -225,6 +225,9 @@ nvc0_interp_mode(const struct tgsi_full_declaration *decl) if (decl->Declaration.Interpolate == TGSI_INTERPOLATE_PERSPECTIVE) mode = NVC0_INTERP_PERSPECTIVE; else + if (decl->Declaration.Semantic && decl->Semantic.Name == TGSI_SEMANTIC_COLOR) + mode = NVC0_INTERP_PERSPECTIVE; + else mode = NVC0_INTERP_LINEAR; if (decl->Declaration.Centroid) |