Module: Mesa
Branch: master
Commit: b84e3f570f4b5aba1dd96760e090ae976d0e1cba
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=b84e3f570f4b5aba1dd96760e090ae976d0e1cba
Author: Chad Versace <chad.vers...@intel.com>
Date: Wed Dec 15 16:32:47 2010 -0800
glsl: Allow redeclaration of gl_Color and its variants in GLSL 1.30
Allow redeclaration of the following built-in variables with an
interpolation qualifier in language versions >= 1.30:
* gl_FrontColor
* gl_BackColor
* gl_FrontSecondaryColor
* gl_BackSecondaryColor
* gl_Color
* gl_SecondaryColor
See section 4.3.7 of the GLSL 1.30 spec.
---
src/glsl/ast_to_hir.cpp | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 2baeffc..6770eed 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -2344,6 +2344,27 @@ ast_declarator_list::hir(exec_list *instructions,
*/
earlier->origin_upper_left = var->origin_upper_left;
earlier->pixel_center_integer = var->pixel_center_integer;
+
+ /* According to section 4.3.7 of the GLSL 1.30 spec,
+ * the following built-in varaibles can be redeclared with an
+ * interpolation qualifier:
+ * * gl_FrontColor
+ * * gl_BackColor
+ * * gl_FrontSecondaryColor
+ * * gl_BackSecondaryColor
+ * * gl_Color
+ * * gl_SecondaryColor
+ */
+ } else if (state->language_version >= 130
+ && (strcmp(var->name, "gl_FrontColor") == 0
+ || strcmp(var->name, "gl_BackColor") == 0
+ || strcmp(var->name, "gl_FrontSecondaryColor") == 0
+ || strcmp(var->name, "gl_BackSecondaryColor") == 0
+ || strcmp(var->name, "gl_Color") == 0
+ || strcmp(var->name, "gl_SecondaryColor") == 0)
+ && earlier->type == var->type
+ && earlier->mode == var->mode) {
+ earlier->interpolation = var->interpolation;
} else {
YYLTYPE loc = this->get_location();
_mesa_glsl_error(&loc, state, "`%s' redeclared", decl->identifier);
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