mesa: fix bug in GLSL built-in matrix state lookup

2008-11-12 16:44:47 -07:00
parent 557fde9531
commit 47b883e42b
1 changed files with 5 additions and 2 deletions
@@ -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;