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gallium: TGSI->PPC inequality operators

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This commit is contained in:
Brian Paul 2008-10-22 14:48:58 -06:00
parent b06d072019
commit 5184006560
1 changed files with 70 additions and 0 deletions
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70
src/gallium/auxiliary/tgsi/tgsi_ppc.c
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@ -1495,6 +1495,68 @@ emit_binop(struct gen_context *gen, struct tgsi_full_instruction *inst)
}
/**
* Vector comparisons, resulting in 1.0 or 0.0 values.
*/
static void
emit_inequality(struct gen_context *gen, struct tgsi_full_instruction *inst)
{
int v0 = ppc_allocate_vec_register(gen->f);
int v1 = ppc_allocate_vec_register(gen->f);
int v2 = ppc_allocate_vec_register(gen->f);
int v_one = ppc_allocate_vec_register(gen->f);
uint chan_index;
boolean complement = FALSE;
/* v_one = splat(1.0) */
ppc_vload_float(gen->f, v_one, 1.0f);
FOR_EACH_DST0_ENABLED_CHANNEL(*inst, chan_index) {
FETCH(gen, *inst, v0, 0, chan_index); /* v0 = srcreg[0] */
FETCH(gen, *inst, v1, 1, chan_index); /* v1 = srcreg[1] */
switch (inst->Instruction.Opcode) {
case TGSI_OPCODE_SNE:
complement = TRUE;
/* fall-through */
case TGSI_OPCODE_SEQ:
ppc_vcmpeqfpx(gen->f, v2, v0, v1); /* v2 = v0 == v1 ? ~0 : 0 */
break;
case TGSI_OPCODE_SGE:
complement = TRUE;
/* fall-through */
case TGSI_OPCODE_SLT:
ppc_vcmpgtfpx(gen->f, v2, v1, v0); /* v2 = v1 > v0 ? ~0 : 0 */
break;
case TGSI_OPCODE_SLE:
complement = TRUE;
/* fall-through */
case TGSI_OPCODE_SGT:
ppc_vcmpgtfpx(gen->f, v2, v0, v1); /* v2 = v0 > v1 ? ~0 : 0 */
break;
default:
assert(0);
}
/* v2 is now {0,0,0,0} or {~0,~0,~0,~0} */
if (complement)
ppc_vandc(gen->f, v2, v_one, v2); /* v2 = v_one & ~v2 */
else
ppc_vand(gen->f, v2, v_one, v2); /* v2 = v_one & v2 */
STORE(gen, *inst, v2, 0, chan_index); /* store v2 */
}
ppc_release_vec_register(gen->f, v0);
ppc_release_vec_register(gen->f, v1);
ppc_release_vec_register(gen->f, v2);
ppc_release_vec_register(gen->f, v_one);
}
static void
emit_dotprod(struct gen_context *gen, struct tgsi_full_instruction *inst)
{
@ -1588,6 +1650,14 @@ emit_instruction(struct gen_context *gen,
case TGSI_OPCODE_MAX:
emit_binop(gen, inst);
break;
case TGSI_OPCODE_SEQ:
case TGSI_OPCODE_SNE:
case TGSI_OPCODE_SLT:
case TGSI_OPCODE_SGT:
case TGSI_OPCODE_SLE:
case TGSI_OPCODE_SGE:
emit_inequality(gen, inst);
break;
case TGSI_OPCODE_MAD:
case TGSI_OPCODE_LRP:
emit_triop(gen, inst);