Mesa (master): glsl: Check that integer vertex outputs are qualified with flat
Chad Versace
chadversary at kemper.freedesktop.org
Tue Jan 4 18:51:27 UTC 2011
Module: Mesa
Branch: master
Commit: 68d06b1454aea30c492c7318ab4e8514df8f38fd
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=68d06b1454aea30c492c7318ab4e8514df8f38fd
Author: Chad Versace <chad.versace at intel.com>
Date: Thu Dec 16 11:06:19 2010 -0800
glsl: Check that integer vertex outputs are qualified with flat
Perform this check in ast_declarator_list::hir().
>From section 4.3.6 of the GLSL 1.30 spec:
"If a vertex output is a signed or unsigned integer or integer
vector, then it must be qualified with the interpolation
qualifier
flat."
---
src/glsl/ast_to_hir.cpp | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 6770eed..67202df 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -2158,6 +2158,25 @@ ast_declarator_list::hir(exec_list *instructions,
}
}
+ /* Integer vertex outputs must be qualified with 'flat'.
+ *
+ * From section 4.3.6 of the GLSL 1.30 spec:
+ * "If a vertex output is a signed or unsigned integer or integer
+ * vector, then it must be qualified with the interpolation qualifier
+ * flat."
+ */
+ if (state->language_version >= 130
+ && state->target == vertex_shader
+ && state->current_function == NULL
+ && var->type->is_integer()
+ && var->mode == ir_var_out
+ && var->interpolation != ir_var_flat) {
+
+ _mesa_glsl_error(&loc, state, "If a vertex output is an integer, "
+ "then it must be qualified with 'flat'");
+ }
+
+
/* Process the initializer and add its instructions to a temporary
* list. This list will be added to the instruction stream (below) after
* the declaration is added. This is done because in some cases (such as
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