Matt Turner noticed that the hardware has always had a MIN
instruction, but the driver always used MAX+MOV for no
apparent reason.
This should cut an instruction, and a temporary, allowing
more programs to run in hardware.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/mesa/drivers/dri/i915/i915_fragprog.c | 16 +---------------
1 file changed, 1 insertion(+), 15 deletions(-)
diff --git a/src/mesa/drivers/dri/i915/i915_fragprog.c
b/src/mesa/drivers/dri/i915/i915_fragprog.c
index 96fdd3c..d42da5a 100644
--- a/src/mesa/drivers/dri/i915/i915_fragprog.c
+++ b/src/mesa/drivers/dri/i915/i915_fragprog.c
@@ -671,21 +671,7 @@ upload_program(struct i915_fragment_program *p)
break;
case OPCODE_MIN:
- src0 = src_vector(p, &inst->SrcReg[0], program);
- src1 = src_vector(p, &inst->SrcReg[1], program);
- tmp = i915_get_utemp(p);
- flags = get_result_flags(inst);
-
- i915_emit_arith(p,
- A0_MAX,
- tmp, flags & A0_DEST_CHANNEL_ALL, 0,
- negate(src0, 1, 1, 1, 1),
- negate(src1, 1, 1, 1, 1), 0);
-
- i915_emit_arith(p,
- A0_MOV,
- get_result_vector(p, inst),
- flags, 0, negate(tmp, 1, 1, 1, 1), 0, 0);
+ EMIT_2ARG_ARITH(A0_MIN);
break;
case OPCODE_MOV:
--
2.2.2
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