glsl: Add an ir_variable::max_ifc_array_access field.

For interface blocks that contain arrays, this field will contain the
maximum element of each contained array that is accessed by the
shader.  This is a first step toward supporting unsized arrays in
interface blocks.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/glsl/ir_clone.cpp b/src/glsl/ir_clone.cpp
index dde22e0..105f906 100644
--- a/src/glsl/ir_clone.cpp
+++ b/src/glsl/ir_clone.cpp
@@ -44,6 +44,12 @@ ir_variable::clone(void *mem_ctx, struct hash_table *ht) const
 					       (ir_variable_mode) this->mode);
 
    var->max_array_access = this->max_array_access;
+   if (this->is_interface_instance()) {
+      var->max_ifc_array_access =
+         rzalloc_array(var, unsigned, this->interface_type->length);
+      memcpy(var->max_ifc_array_access, this->max_ifc_array_access,
+             this->interface_type->length * sizeof(unsigned));
+   }
    var->read_only = this->read_only;
    var->centroid = this->centroid;
    var->invariant = this->invariant;