diff options
| author | Christoph Bumiller <[email protected]> | 2010-08-31 19:09:15 +0200 |
|---|---|---|
| committer | Christoph Bumiller <[email protected]> | 2010-09-01 18:02:50 +0200 |
| commit | 07fe7c2f02dbf4e0c385aaf3f21ee858f0ae974c (patch) | |
| tree | eef4da3e52bb3e379ddbf2068b092eabe985a3cd | |
| parent | 917c79b384af9da95d2fe3ad86d488478d0d7718 (diff) | |
nv50: make FrontFacing -1 or +1
| -rw-r--r-- | src/gallium/drivers/nv50/nv50_tgsi_to_nc.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/gallium/drivers/nv50/nv50_tgsi_to_nc.c b/src/gallium/drivers/nv50/nv50_tgsi_to_nc.c index 0a4c88c8179..c98d5e126ad 100644 --- a/src/gallium/drivers/nv50/nv50_tgsi_to_nc.c +++ b/src/gallium/drivers/nv50/nv50_tgsi_to_nc.c @@ -964,6 +964,14 @@ bld_saved_input(struct bld_context *bld, unsigned i, unsigned c) static struct nv_value * bld_interpolate(struct bld_context *bld, unsigned mode, struct nv_value *val) { + if (val->reg.id == 255) { + /* gl_FrontFacing: 0/~0 to -1.0/+1.0 */ + val = bld_insn_1(bld, NV_OP_LINTERP, val); + val = bld_insn_2(bld, NV_OP_SHL, val, bld_imm_u32(bld, 31)); + val->insn->src[0]->typecast = NV_TYPE_U32; + val = bld_insn_2(bld, NV_OP_XOR, val, bld_imm_f32(bld, -1.0f)); + val->insn->src[0]->typecast = NV_TYPE_U32; + } else if (mode & (NV50_INTERP_LINEAR | NV50_INTERP_FLAT)) val = bld_insn_1(bld, NV_OP_LINTERP, val); else @@ -1029,9 +1037,8 @@ emit_fetch(struct bld_context *bld, const struct tgsi_full_instruction *insn, } else { assert(src->Dimension.Dimension == 0); res = bld_insn_1(bld, NV_OP_LDA, res); + assert(res->reg.type == type); } - assert(res->reg.type == type); - bld->saved_inputs[bld->ti->input_map[idx][swz]] = res; break; case TGSI_FILE_TEMPORARY: |