diff options
| author | Rob Clark <robclark@freedesktop.org> | 2016-03-21 19:55:37 -0400 |
|---|---|---|
| committer | Rob Clark <robclark@freedesktop.org> | 2016-03-28 10:19:53 -0400 |
| commit | b4c72b792caecd8be271af20de92d24b4ae7da4c (patch) | |
| tree | 93300e7809d46cf964a1d0d37bcf8b40083222db /src | |
| parent | 3ca034cada87aea58a92113cb38cf92a97d70c55 (diff) | |
freedreno/ir3: fix for load_front_face intrinsic
Seems like trying to widen in the same instruction as the add.s does a
non-sign-extending widen.
Signed-off-by: Rob Clark <robclark@freedesktop.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c index 88f6e168558..3d656d4a34d 100644 --- a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c +++ b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c @@ -1258,7 +1258,14 @@ emit_intrinsic(struct ir3_compile *ctx, nir_intrinsic_instr *intr) ctx->frag_face = create_input(b, 0); ctx->frag_face->regs[0]->flags |= IR3_REG_HALF; } - dst[0] = ir3_ADD_S(b, ctx->frag_face, 0, create_immed(b, 1), 0); + /* for fragface, we always get -1 or 0, but that is inverse + * of what nir expects (where ~0 is true). Unfortunately + * trying to widen from half to full in add.s seems to do a + * non-sign-extending widen (resulting in something that + * gets interpreted as float Inf??) + */ + dst[0] = ir3_COV(b, ctx->frag_face, TYPE_S16, TYPE_S32); + dst[0] = ir3_ADD_S(b, dst[0], 0, create_immed(b, 1), 0); break; case nir_intrinsic_discard_if: case nir_intrinsic_discard: { |