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-rw-r--r--src/glsl/ast_to_hir.cpp19
1 files changed, 18 insertions, 1 deletions
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 9d642c1a642..22d9f7ad532 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -1813,7 +1813,24 @@ ast_declarator_list::hir(exec_list *instructions,
* FINISHME: required or not.
*/
- if (var->type->array_size() <= (int)earlier->max_array_access) {
+ /* From page 54 (page 60 of the PDF) of the GLSL 1.20 spec:
+ *
+ * "The size [of gl_TexCoord] can be at most
+ * gl_MaxTextureCoords."
+ *
+ * FINISHME: Every platform that supports GLSL sets
+ * FINISHME: gl_MaxTextureCoords to at least 4, so hard-code 4
+ * FINISHME: for now.
+ */
+ if ((strcmp("gl_TexCoord", var->name) == 0)
+ && (var->type->array_size() > 4)) {
+ YYLTYPE loc = this->get_location();
+
+ _mesa_glsl_error(& loc, state, "`gl_TexCoord' array size cannot "
+ "be larger than gl_MaxTextureCoords (%u)\n",
+ 4);
+ } else if (var->type->array_size() <=
+ (int)earlier->max_array_access) {
YYLTYPE loc = this->get_location();
_mesa_glsl_error(& loc, state, "array size must be > %u due to "