Mesa (gallium-0.1): tgsi: Return 0.0 for negative constant register indices .
MichaŠKról
michal at kemper.freedesktop.org
Mon Dec 22 20:43:42 UTC 2008
Module: Mesa
Branch: gallium-0.1
Commit: 4b3c74b4d6786475bc45f883612e76069e722cbd
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=4b3c74b4d6786475bc45f883612e76069e722cbd
Author: Michal Krol <michal at tungstengraphics.com>
Date: Fri Nov 14 13:31:06 2008 +0100
tgsi: Return 0.0 for negative constant register indices.
---
src/gallium/auxiliary/tgsi/tgsi_exec.c | 24 ++++++++++++++++--------
1 files changed, 16 insertions(+), 8 deletions(-)
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index 0756d7d..d55c337 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -958,14 +958,22 @@ fetch_src_file_channel(
switch( file ) {
case TGSI_FILE_CONSTANT:
assert(mach->Consts);
- assert(index->i[0] >= 0);
- assert(index->i[1] >= 0);
- assert(index->i[2] >= 0);
- assert(index->i[3] >= 0);
- chan->f[0] = mach->Consts[index->i[0]][swizzle];
- chan->f[1] = mach->Consts[index->i[1]][swizzle];
- chan->f[2] = mach->Consts[index->i[2]][swizzle];
- chan->f[3] = mach->Consts[index->i[3]][swizzle];
+ if (index->i[0] < 0)
+ chan->f[0] = 0.0f;
+ else
+ chan->f[0] = mach->Consts[index->i[0]][swizzle];
+ if (index->i[1] < 0)
+ chan->f[1] = 0.0f;
+ else
+ chan->f[1] = mach->Consts[index->i[1]][swizzle];
+ if (index->i[2] < 0)
+ chan->f[2] = 0.0f;
+ else
+ chan->f[2] = mach->Consts[index->i[2]][swizzle];
+ if (index->i[3] < 0)
+ chan->f[3] = 0.0f;
+ else
+ chan->f[3] = mach->Consts[index->i[3]][swizzle];
break;
case TGSI_FILE_INPUT:
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