Module: Mesa
Branch: master
Commit: 29af29b8dca1c468294205a126c49084c7dcecf2
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=29af29b8dca1c468294205a126c49084c7dcecf2
Author: Chia-I Wu <olva...@gmail.com>
Date: Thu Jul 11 06:39:05 2013 +0800
ilo: correctly initialize undefined registers in fs
Initialize all 4 channels of undefined registers (that is, TEMPs that are used
before being assigned) in FS.
---
src/gallium/drivers/ilo/shader/toy_tgsi.c | 20 +++++++++++++++-----
1 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/src/gallium/drivers/ilo/shader/toy_tgsi.c
b/src/gallium/drivers/ilo/shader/toy_tgsi.c
index ad6161d..bf61cbb 100644
--- a/src/gallium/drivers/ilo/shader/toy_tgsi.c
+++ b/src/gallium/drivers/ilo/shader/toy_tgsi.c
@@ -2136,11 +2136,21 @@ ra_get_src(struct toy_tgsi *tgsi,
struct toy_dst dst = tdst_from(src);
dst.writemask = TOY_WRITEMASK_XYZW;
- /*
- * Always initialize registers. Otherwise, if the random value
- * ends up in a VUE, FS may fail to interpolate correctly.
- */
- tc_MOV(tgsi->tc, dst, tsrc_type(tsrc_imm_d(0), type));
+ /* always initialize registers before use */
+ if (tgsi->aos) {
+ tc_MOV(tgsi->tc, dst, tsrc_type(tsrc_imm_d(0), type));
+ }
+ else {
+ struct toy_dst tdst[4];
+ int i;
+
+ tdst_transpose(dst, tdst);
+
+ for (i = 0; i < 4; i++) {
+ tc_MOV(tgsi->tc, tdst[i],
+ tsrc_type(tsrc_imm_d(0), type));
+ }
+ }
}
break;
default:
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