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tgsi: Return 0.0 for negative constant register indices.

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This commit is contained in:
Michal Krol 2008-11-14 13:31:06 +01:00
parent 957f7d7d94
commit d86ffcffb3
1 changed files with 16 additions and 8 deletions
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24
src/gallium/auxiliary/tgsi/tgsi_exec.c
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@ -947,14 +947,22 @@ 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: