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-rw-r--r--src/mesa/shader/prog_parameter.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/src/mesa/shader/prog_parameter.c b/src/mesa/shader/prog_parameter.c
index 66edae9001..e9ed3985ee 100644
--- a/src/mesa/shader/prog_parameter.c
+++ b/src/mesa/shader/prog_parameter.c
@@ -178,15 +178,20 @@ _mesa_add_named_constant(struct gl_program_parameter_list *paramList,
const char *name, const GLfloat values[4],
GLuint size)
{
-#if 0 /* disable this for now -- we need to save the name! */
+ /* first check if this is a duplicate constant */
GLint pos;
- GLuint swizzle;
- ASSERT(size == 4); /* XXX future feature */
- /* check if we already have this constant */
- if (_mesa_lookup_parameter_constant(paramList, values, 4, &pos, &swizzle)) {
- return pos;
+ for (pos = 0; pos < paramList->NumParameters; pos++) {
+ const GLfloat *pvals = paramList->ParameterValues[pos];
+ if (pvals[0] == values[0] &&
+ pvals[1] == values[1] &&
+ pvals[2] == values[2] &&
+ pvals[3] == values[3] &&
+ _mesa_strcmp(paramList->Parameters[pos].Name, name) == 0) {
+ /* Same name and value is already in the param list - reuse it */
+ return pos;
+ }
}
-#endif
+ /* not found, add new parameter */
return _mesa_add_parameter(paramList, PROGRAM_CONSTANT, name,
size, GL_NONE, values, NULL, 0x0);
}