glsl: Calculate UBO data at link-time

Use the function added in the previous commit.

This temporarily causes gles3conform
uniform_buffer_object_index_of_not_active_block,
uniform_buffer_object_inherit_and_override_layouts, and
uniform_buffer_object_repeat_global_scope_layouts to assertion fail.
This is fixed in the next commit.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

src/glsl/linker.cpp

@@ -873,7 +873,6 @@ link_intrastage_shaders(void *mem_ctx,
 			unsigned num_shaders)
 {
    struct gl_uniform_block *uniform_blocks = NULL;
-   unsigned num_uniform_blocks = 0;
 
    /* Check that global variables defined in multiple shaders are consistent.
     */
@@ -881,23 +880,11 @@ link_intrastage_shaders(void *mem_ctx,
       return NULL;
 
    /* Check that uniform blocks between shaders for a stage agree. */
-   for (unsigned i = 0; i < num_shaders; i++) {
-      struct gl_shader *sh = shader_list[i];
-
-      for (unsigned j = 0; j < sh->NumUniformBlocks; j++) {
-	 link_assign_uniform_block_offsets(sh);
-
-	 int index = link_cross_validate_uniform_block(mem_ctx,
-						       &uniform_blocks,
-						       &num_uniform_blocks,
-						       &sh->UniformBlocks[j]);
-	 if (index == -1) {
-	    linker_error(prog, "uniform block `%s' has mismatching definitions",
-			 sh->UniformBlocks[j].Name);
-	    return NULL;
-	 }
-      }
-   }
+   const int num_uniform_blocks =
+      link_uniform_blocks(mem_ctx, prog, shader_list, num_shaders,
+                          &uniform_blocks);
+   if (num_uniform_blocks < 0)
+      return NULL;
 
    /* Check that there is only a single definition of each function signature
     * across all shaders.