Module: Mesa
Branch: master
Commit: 336351e971d6232bbed11d9812ebf05341b6aa36
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=336351e971d6232bbed11d9812ebf05341b6aa36
Author: Paul Berry <stereotype...@gmail.com>
Date: Mon Aug 12 06:39:23 2013 -0700
glsl/ast: Check that geometry shader interface block inputs are arrays.
Reviewed-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/glsl/ast_to_hir.cpp | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp
index 49804b7..3610014 100644
--- a/src/glsl/ast_to_hir.cpp
+++ b/src/glsl/ast_to_hir.cpp
@@ -4528,6 +4528,19 @@ ast_interface_block::hir(exec_list *instructions,
*/
assert(declared_variables.is_empty());
+ /* From section 4.3.4 (Inputs) of the GLSL 1.50 spec:
+ *
+ * Geometry shader input variables get the per-vertex values written
+ * out by vertex shader output variables of the same names. Since a
+ * geometry shader operates on a set of vertices, each input varying
+ * variable (or input block, see interface blocks below) needs to be
+ * declared as an array.
+ */
+ if (state->target == geometry_shader && !this->is_array &&
+ var_mode == ir_var_shader_in) {
+ _mesa_glsl_error(&loc, state, "geometry shader inputs must be arrays");
+ }
+
/* Page 39 (page 45 of the PDF) of section 4.3.7 in the GLSL ES 3.00 spec
* says:
*
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