diff options
| author | Eric Anholt <[email protected]> | 2014-08-11 15:24:43 -0700 |
|---|---|---|
| committer | Eric Anholt <[email protected]> | 2014-08-12 14:03:34 -0700 |
| commit | b9eb3d4bee7591dacdf47835e5212962b2290dbf (patch) | |
| tree | 4bbfb3363dace9262f5713e04edf8afea482f728 /src | |
| parent | 8c229d306b3f312adbdfbaf79967ee43fbfc839e (diff) | |
vc4: Add support for the FLR opcode.
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_program.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c index d871dcd88d3..c87ea52c25e 100644 --- a/src/gallium/drivers/vc4/vc4_program.c +++ b/src/gallium/drivers/vc4/vc4_program.c @@ -390,6 +390,23 @@ tgsi_to_qir_frc(struct tgsi_to_qir *trans, diff); } +/** + * Computes floor(x), which is tricky because our FTOI truncates (rounds to + * zero). + */ +static struct qreg +tgsi_to_qir_flr(struct tgsi_to_qir *trans, + struct tgsi_full_instruction *tgsi_inst, + enum qop op, struct qreg *src, int i) +{ + struct qcompile *c = trans->c; + struct qreg trunc = qir_ITOF(c, qir_FTOI(c, src[0 * 4 + i])); + return qir_CMP(c, + src[0 * 4 + i], + qir_FSUB(c, trunc, qir_uniform_f(trans, 1.0)), + trunc); +} + static struct qreg tgsi_to_qir_dp(struct tgsi_to_qir *trans, struct tgsi_full_instruction *tgsi_inst, @@ -665,6 +682,7 @@ emit_tgsi_instruction(struct tgsi_to_qir *trans, [TGSI_OPCODE_POW] = { 0, tgsi_to_qir_pow }, [TGSI_OPCODE_TRUNC] = { 0, tgsi_to_qir_trunc }, [TGSI_OPCODE_FRC] = { 0, tgsi_to_qir_frc }, + [TGSI_OPCODE_FLR] = { 0, tgsi_to_qir_flr }, [TGSI_OPCODE_SIN] = { 0, tgsi_to_qir_sin }, [TGSI_OPCODE_COS] = { 0, tgsi_to_qir_cos }, }; |