r600g/sb: fix a bug in constants folding optimisation
pass:
ADD R6.y.1, R5.w.1, ~1|3f800000
ADD R6.y.2, |R6.y.1|, -0.0001|b8d1b717
was wrongly being converted to
ADD R6.y.1, R5.w.1, ~1|3f800000
ADD R6.y.2, R5.w.1, -1.0001|bf800347
because abs() modifier was ignored.
Signed-off-by: Xavier Bouchoux <[email protected]>
From 90481a39aaf10a46fd18254c8ecd3e42d1bc0499 Mon Sep 17 00:00:00 2001
From: xavier <[email protected]>
Date: Wed, 28 Jan 2015 02:31:58 +0100
Subject: [PATCH 2/2] r600g/sb: fix a bug in constants folding optimisation
pass:
ADD R6.y.1, R5.w.1, ~1|3f800000
ADD R6.y.2, |R6.y.1|, -0.0001|b8d1b717
was wrongly being converted to
ADD R6.y.1, R5.w.1, ~1|3f800000
ADD R6.y.2, R5.w.1, -1.0001|bf800347
because abs() modifier was ignored.
Signed-off-by: Xavier Bouchoux <[email protected]>
---
src/gallium/drivers/r600/sb/sb_expr.cpp | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/gallium/drivers/r600/sb/sb_expr.cpp b/src/gallium/drivers/r600/sb/sb_expr.cpp
index 52c0c17..9c2274e 100644
--- a/src/gallium/drivers/r600/sb/sb_expr.cpp
+++ b/src/gallium/drivers/r600/sb/sb_expr.cpp
@@ -645,6 +645,7 @@ bool expr_handler::fold_assoc(alu_node *n) {
(op == ALU_OP2_MUL_IEEE &&
d0->is_alu_op(ALU_OP2_MUL))) &&
!d0->bc.omod && !d0->bc.clamp &&
+ !a->bc.src[0].abs &&
(!a->bc.src[0].neg || allow_neg)) {
cur_neg ^= a->bc.src[0].neg;
a = d0;
@@ -678,6 +679,7 @@ bool expr_handler::fold_assoc(alu_node *n) {
(op == ALU_OP2_MUL_IEEE &&
d1->is_alu_op(ALU_OP2_MUL))) &&
!d1->bc.omod && !d1->bc.clamp &&
+ !a->bc.src[1].abs &&
(!a->bc.src[1].neg || allow_neg)) {
cur_neg ^= a->bc.src[1].neg;
a = d1;
--
2.1.0
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