[Mesa-dev] [PATCH 04/12] glsl parser: reject VS+in & FS+out interface blocks

[Jordan Justen]

Signed-off-by: Jordan Justen <jordan.l.justen at intel.com>
---
 src/glsl/glsl_parser.yy |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/glsl/glsl_parser.yy b/src/glsl/glsl_parser.yy
index 7adc06d..8e6b04d 100644
--- a/src/glsl/glsl_parser.yy
+++ b/src/glsl/glsl_parser.yy
@@ -1935,6 +1935,20 @@ basic_interface_block:
 	      }
 	   }
 
+	   /* GLSLangSpec.1.50.11, 4.3.7 Interface Blocks:
+	    * "It is illegal to have an input block in a vertex shader
+	    *  or an output block in a fragment shader"
+	    */
+	   if ((state->target == vertex_shader) && $1.flags.q.in) {
+	      _mesa_glsl_error(& @1, state,
+	                       "in interface block is not allowed for "
+	                       "a vertex shader\n");
+	   } else if ((state->target == fragment_shader) && $1.flags.q.out) {
+	      _mesa_glsl_error(& @1, state,
+	                       "out interface block is not allowed for "
+	                       "a fragment shader\n");
+	   }
+
 	   /* Since block arrays require names, and both features are added in
 	    * the same language versions, we don't have to explicitly
 	    * version-check both things.
-- 
1.7.10.4