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vc4: Add support for the CEIL opcode.

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Not as big of a deal as SSG, but still +9 piglit tests.
This commit is contained in:
Eric Anholt 2014-10-13 08:05:35 +01:00
parent 926eaa9af4
commit 83365a5b57
1 changed files with 22 additions and 0 deletions
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22
src/gallium/drivers/vc4/vc4_program.c
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@ -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 },