mesa: update the shader programs->TexturesUsed array at link time

If an application never calls glUniform() to set sampler variable values
they'll remain 0 (the default value/unit).
Now call _mesa_update_shader_textures_used() at link time in case glUniform()
is never called.  program->TextureUsed[] will then be correct for state
validation.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/mesa/shader/shader_api.h b/src/mesa/shader/shader_api.h
index e7f1266915..ec1996ee98 100644
--- a/src/mesa/shader/shader_api.h
+++ b/src/mesa/shader/shader_api.h
@@ -80,6 +80,10 @@ _mesa_lookup_shader(GLcontext *ctx, GLuint name);
 
 
 extern void
+_mesa_update_shader_textures_used(struct gl_program *prog);
+
+
+extern void
 _mesa_use_program(GLcontext *ctx, GLuint program);