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nvfx: implement fp SSG properly

This commit is contained in:
Luca Barbieri 2010-09-04 04:17:16 +02:00
parent 527a4f11a7
commit 72648ca51f
1 changed files with 18 additions and 5 deletions
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23
src/gallium/drivers/nvfx/nvfx_fragprog.c
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@ -757,12 +757,25 @@ nvfx_fragprog_parse_instruction(struct nvfx_context* nvfx, struct nvfx_fpc *fpc,
nvfx_fp_emit(fpc, arith(sat, SNE, dst, mask, src[0], src[1], none));
break;
case TGSI_OPCODE_SSG:
tmp = nvfx_src(temp(fpc));
tmp2 = nvfx_src(temp(fpc));
nvfx_fp_emit(fpc, arith(0, SGT, tmp.reg, mask, src[0], nvfx_src(nvfx_reg(NVFXSR_CONST, 0)), none));
nvfx_fp_emit(fpc, arith(0, SLT, tmp.reg, mask, src[0], nvfx_src(nvfx_reg(NVFXSR_CONST, 0)), none));
nvfx_fp_emit(fpc, arith(sat, ADD, dst, mask, tmp, neg(tmp2), none));
{
float minonesv[4] = {-1.0, -1.0, -1.0, -1.0};
struct nvfx_src minones = swz(nvfx_src(constant(fpc, -1, minonesv)), X, X, X, X);
insn = arith(sat, MOV, dst, mask, src[0], none, none);
insn.cc_update = 1;
nvfx_fp_emit(fpc, insn);
insn = arith(0, STR, dst, mask, none, none, none);
insn.cc_test = NVFX_COND_GT;
nvfx_fp_emit(fpc, insn);
if(!sat) {
insn = arith(0, MOV, dst, mask, minones, none, none);
insn.cc_test = NVFX_COND_LT;
nvfx_fp_emit(fpc, insn);
}
break;
}
case TGSI_OPCODE_STR:
nvfx_fp_emit(fpc, arith(sat, STR, dst, mask, src[0], src[1], none));
break;