Fail compile if gl_FragCoord is redeclared with different layout qualifiers in
one shader.
---
src/glsl/ast_to_hir.cpp | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 63fbd5a..d6362b0 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -2213,6 +2213,16 @@ get_variable_being_redeclared(ir_variable *var,
ast_declaration *decl,
/* Allow redeclaration of gl_FragCoord for ARB_fcc layout
* qualifiers.
*/
+
+ /* Prevent inconsistent redeclaration of layout qualifier. */
+ if (earlier->redeclared
+ && (earlier->origin_upper_left != var->origin_upper_left ||
+ earlier->pixel_center_integer != var->pixel_center_integer)) {
+ _mesa_glsl_error(&loc, state,
+ "`gl_FragCoord' redeclared with different layout "
+ "qualifier");
+ }
+
earlier->origin_upper_left = var->origin_upper_left;
earlier->pixel_center_integer = var->pixel_center_integer;
--
1.8.1.2
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