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Diffstat (limited to 'src/gallium/auxiliary/tgsi/tgsi_ureg.c')
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_ureg.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.c b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
index 96e9bb9e096..7afd986e41f 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_ureg.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
@@ -495,9 +495,10 @@ static int
match_or_expand_immediate( const unsigned *v,
unsigned nr,
unsigned *v2,
- unsigned *nr2,
+ unsigned *pnr2,
unsigned *swizzle )
{
+ unsigned nr2 = *pnr2;
unsigned i, j;
*swizzle = 0;
@@ -505,7 +506,7 @@ match_or_expand_immediate( const unsigned *v,
for (i = 0; i < nr; i++) {
boolean found = FALSE;
- for (j = 0; j < *nr2 && !found; j++) {
+ for (j = 0; j < nr2 && !found; j++) {
if (v[i] == v2[j]) {
*swizzle |= j << (i * 2);
found = TRUE;
@@ -513,16 +514,19 @@ match_or_expand_immediate( const unsigned *v,
}
if (!found) {
- if (*nr2 >= 4) {
+ if (nr2 >= 4) {
return FALSE;
}
- v2[*nr2] = v[i];
- *swizzle |= *nr2 << (i * 2);
- (*nr2)++;
+ v2[nr2] = v[i];
+ *swizzle |= nr2 << (i * 2);
+ nr2++;
}
}
+ /* Actually expand immediate only when fully succeeded.
+ */
+ *pnr2 = nr2;
return TRUE;
}