mesa: reference built-in uniforms into gl_uniform_storage

This change introduces a new field in gl_uniform_storage to
explicitely say that a uniform is built-in. In the case where it is,
no storage is defined to make it clear that it is read-only from the
mesa side. I fixed all the places in the code that made use of the
structure that I changed. Any place making a wrong assumption and using
the storage straight away will just crash.

This patch seems to implement the path of least resistance towards
listing built-in uniforms in GL_ACTIVE_UNIFORM (and other APIs).

Reviewed-by: Tapani Pälli <[email protected]>
Signed-off-by: Martin Peres <[email protected]>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/mesa/main/shaderobj.c b/src/mesa/main/shaderobj.c
index e428960362d..110a18e1e2c 100644
--- a/src/mesa/main/shaderobj.c
+++ b/src/mesa/main/shaderobj.c
@@ -282,10 +282,10 @@ _mesa_clear_shader_program_data(struct gl_shader_program *shProg)
    unsigned i;
 
    if (shProg->UniformStorage) {
-      for (i = 0; i < shProg->NumUserUniformStorage; ++i)
+      for (i = 0; i < shProg->NumUniformStorage; ++i)
          _mesa_uniform_detach_all_driver_storage(&shProg->UniformStorage[i]);
       ralloc_free(shProg->UniformStorage);
-      shProg->NumUserUniformStorage = 0;
+      shProg->NumUniformStorage = 0;
       shProg->UniformStorage = NULL;
    }