diff options
| author | Eric Anholt <[email protected]> | 2014-08-20 14:44:36 -0700 |
|---|---|---|
| committer | Eric Anholt <[email protected]> | 2014-08-22 10:16:57 -0700 |
| commit | c3c922289b2fb080ec184d9bd7e71a8870ced18d (patch) | |
| tree | 761325ed6d90430442566eba465e36b4a08b4d4f /src/gallium/drivers/vc4/vc4_program.c | |
| parent | 2ab4e48f9457159087c851f2230c1e642ea65802 (diff) | |
vc4: Fix FLR for integer values less than 0.
If we didn't truncate at all, then we don't need to fix for truncation
happening in the wrong direction.
Fixes piglit builtin-functions/*-floor-*
Diffstat (limited to 'src/gallium/drivers/vc4/vc4_program.c')
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_program.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c index c11ee5aa1b1..9f59bdffe0c 100644 --- a/src/gallium/drivers/vc4/vc4_program.c +++ b/src/gallium/drivers/vc4/vc4_program.c @@ -431,8 +431,14 @@ tgsi_to_qir_flr(struct tgsi_to_qir *trans, { struct qcompile *c = trans->c; struct qreg trunc = qir_ITOF(c, qir_FTOI(c, src[0 * 4 + i])); + + /* This will be < 0 if we truncated and the truncation was of a value + * that was < 0 in the first place. + */ + struct qreg diff = qir_FSUB(c, src[0 * 4 + i], trunc); + return qir_CMP(c, - src[0 * 4 + i], + diff, qir_FSUB(c, trunc, qir_uniform_f(trans, 1.0)), trunc); } |