diff options
| author | Eric Anholt <eric@anholt.net> | 2014-10-13 08:05:35 +0100 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2014-10-13 08:06:48 +0100 |
| commit | 83365a5b57b6ab966329bceb858d41d6159d7f3d (patch) | |
| tree | 8dfc6cd33066b50b480c8ffbc41ce33c51fb2693 | |
| parent | 926eaa9af464f2448b3840bb401c0b2efe43bb40 (diff) | |
vc4: Add support for the CEIL opcode.
Not as big of a deal as SSG, but still +9 piglit tests.
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_program.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c index 15da3ed3005..b7c51a7195b 100644 --- a/src/gallium/drivers/vc4/vc4_program.c +++ b/src/gallium/drivers/vc4/vc4_program.c @@ -722,6 +722,27 @@ tgsi_to_qir_flr(struct vc4_compile *c, trunc); } +/** + * Computes ceil(x), which is tricky because our FTOI truncates (rounds to + * zero). + */ +static struct qreg +tgsi_to_qir_ceil(struct vc4_compile *c, + struct tgsi_full_instruction *tgsi_inst, + enum qop op, struct qreg *src, int i) +{ + 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. + */ + qir_SF(c, qir_FSUB(c, trunc, src[0 * 4 + i])); + + return qir_SEL_X_Y_NS(c, + qir_FADD(c, trunc, qir_uniform_f(c, 1.0)), + trunc); +} + static struct qreg tgsi_to_qir_abs(struct vc4_compile *c, struct tgsi_full_instruction *tgsi_inst, @@ -1083,6 +1104,7 @@ emit_tgsi_instruction(struct vc4_compile *c, [TGSI_OPCODE_LG2] = { QOP_LOG2, tgsi_to_qir_scalar }, [TGSI_OPCODE_LRP] = { 0, tgsi_to_qir_lrp }, [TGSI_OPCODE_TRUNC] = { 0, tgsi_to_qir_trunc }, + [TGSI_OPCODE_CEIL] = { 0, tgsi_to_qir_ceil }, [TGSI_OPCODE_FRC] = { 0, tgsi_to_qir_frc }, [TGSI_OPCODE_FLR] = { 0, tgsi_to_qir_flr }, [TGSI_OPCODE_SIN] = { 0, tgsi_to_qir_sin }, |