glsl: implement shader sampler validation

Shader validation should fail if there are two samplers of different types
which reference the same texture unit.  For example, if a cubemap sampler
and a 2D sampler both reference texture unit 0, that's invalid.

1 files changed, 7 insertions, 1 deletions

diff --git a/src/mesa/shader/shader_api.h b/src/mesa/shader/shader_api.h
index ec1996ee98d..d08d47373e1 100644
--- a/src/mesa/shader/shader_api.h
+++ b/src/mesa/shader/shader_api.h
@@ -1,8 +1,9 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.5
+ * Version:  7.6
  *
  * Copyright (C) 2004-2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -87,6 +88,11 @@ extern void
 _mesa_use_program(GLcontext *ctx, GLuint program);
 
 
+extern GLboolean
+_mesa_validate_shader_program(GLcontext *ctx,
+                              const struct gl_shader_program *shProg,
+                              char *errMsg);
+
 extern void
 _mesa_init_glsl_driver_functions(struct dd_function_table *driver);