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prog_to_nir, tgsi_to_nir: make sure kill doesn't discard NaNs 

Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
This commit is contained in:
Marek Olšák 2019-09-06 14:01:51 -04:00
parent 1bb2656276
commit b97c5edd7a
2 changed files with 7 additions and 0 deletions
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4
src/gallium/auxiliary/nir/tgsi_to_nir.c
View File

@ -1109,7 +1109,11 @@ ttn_kill(nir_builder *b, nir_op op, nir_alu_dest dest, nir_ssa_def **src)
static void
ttn_kill_if(nir_builder *b, nir_op op, nir_alu_dest dest, nir_ssa_def **src)
{
/* flt must be exact, because NaN shouldn't discard. (apps rely on this) */
b->exact = true;
nir_ssa_def *cmp = nir_bany(b, nir_flt(b, src[0], nir_imm_float(b, 0.0)));
b->exact = false;
nir_intrinsic_instr *discard =
nir_intrinsic_instr_create(b->shader, nir_intrinsic_discard_if);
discard->src[0] = nir_src_for_ssa(cmp);

3
src/mesa/program/prog_to_nir.c
View File

@ -456,7 +456,10 @@ ptn_lrp(nir_builder *b, nir_alu_dest dest, nir_ssa_def **src)
static void
ptn_kil(nir_builder *b, nir_ssa_def **src)
{
/* flt must be exact, because NaN shouldn't discard. (apps rely on this) */
b->exact = true;
nir_ssa_def *cmp = nir_bany(b, nir_flt(b, src[0], nir_imm_float(b, 0.0)));
b->exact = false;
nir_intrinsic_instr *discard =
nir_intrinsic_instr_create(b->shader, nir_intrinsic_discard_if);