glsl: Keep track of location for interface block fields.

This patch adds a "location" element to struct glsl_struct_field, so
that we can keep track of the gl_varying_slot associated with each
built-in geometry shader input.

In lower_named_interface_blocks, we use this value to populate the
"location" field in the ir_variable that stores each geometry shader
input.

Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Jordan Justen <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/glsl/lower_named_interface_blocks.cpp b/src/glsl/lower_named_interface_blocks.cpp
index 7019185a2f3..5ad5683f63d 100644
--- a/src/glsl/lower_named_interface_blocks.cpp
+++ b/src/glsl/lower_named_interface_blocks.cpp
@@ -150,6 +150,7 @@ flatten_named_interface_blocks_declarations::run(exec_list *instructions)
                                            var_name,
                                            (ir_variable_mode) var->mode);
             }
+            new_var->location = iface_t->fields.structure[i].location;
 
             new_var->interface_type = iface_t;
             hash_table_insert(interface_namespace, new_var,