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-rw-r--r--src/mesa/shader/slang/slang_builtin.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/src/mesa/shader/slang/slang_builtin.c b/src/mesa/shader/slang/slang_builtin.c
index ed6de40d4b..fdcd3714a5 100644
--- a/src/mesa/shader/slang/slang_builtin.c
+++ b/src/mesa/shader/slang/slang_builtin.c
@@ -109,10 +109,13 @@ lookup_statevar(const char *var, GLint index1, GLint index2, const char *field,
if (isMatrix) {
if (tokens[0] == STATE_TEXTURE_MATRIX) {
if (index1 >= 0) {
- tokens[1] = index1;
- index1 = 0; /* prevent extra addition at end of function */
+ tokens[1] = index1; /* which texture matrix */
}
}
+ if (index1 < 0) {
+ /* index1 is unused: prevent extra addition at end of function */
+ index1 = 0;
+ }
}
else if (strcmp(var, "gl_DepthRange") == 0) {
tokens[0] = STATE_DEPTH_RANGE;