glsl: mark variables produced by lower_named_interface_blocks.

These variables will need to be treated specially by
program_resource_visitor, so that they can be addressed through the
API using their interface block name (and array index, for interface
block arrays).

Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Matt Turner <[email protected]>

2 files changed, 20 insertions, 0 deletions

diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index c4c00552ac3..8d5bec9c1ef 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -581,6 +581,24 @@ public:
    unsigned location_frac:2;
 
    /**
+    * Non-zero if this variable was created by lowering a named interface
+    * block which was not an array.
+    *
+    * Note that this variable and \c from_named_ifc_block_array will never
+    * both be non-zero.
+    */
+   unsigned from_named_ifc_block_nonarray:1;
+
+   /**
+    * Non-zero if this variable was created by lowering a named interface
+    * block which was an array.
+    *
+    * Note that this variable and \c from_named_ifc_block_nonarray will never
+    * both be non-zero.
+    */
+   unsigned from_named_ifc_block_array:1;
+
+   /**
     * \brief Layout qualifier for gl_FragDepth.
     *
     * This is not equal to \c ir_depth_layout_none if and only if this
diff --git a/src/glsl/lower_named_interface_blocks.cpp b/src/glsl/lower_named_interface_blocks.cpp
index 87ed60b971e..d59d11150e0 100644
--- a/src/glsl/lower_named_interface_blocks.cpp
+++ b/src/glsl/lower_named_interface_blocks.cpp
@@ -140,6 +140,7 @@ flatten_named_interface_blocks_declarations::run(exec_list *instructions)
                   new(mem_ctx) ir_variable(iface_t->fields.structure[i].type,
                                            var_name,
                                            (ir_variable_mode) var->mode);
+               new_var->from_named_ifc_block_nonarray = 1;
             } else {
                const glsl_type *new_array_type =
                   glsl_type::get_array_instance(
@@ -149,6 +150,7 @@ flatten_named_interface_blocks_declarations::run(exec_list *instructions)
                   new(mem_ctx) ir_variable(new_array_type,
                                            var_name,
                                            (ir_variable_mode) var->mode);
+               new_var->from_named_ifc_block_array = 1;
             }
             new_var->location = iface_t->fields.structure[i].location;
             new_var->explicit_location = (new_var->location >= 0);