Cleanup: Draw: Use StringRef for function argument

source/blender/draw/DRW_engine.hh

@@ -8,6 +8,8 @@
 
 #pragma once
 
+#include "BLI_string_ref.hh"
+
 struct ARegion;
 struct DRWData;
 struct DRWInstanceDataList;
@@ -189,6 +191,6 @@ void DRW_gpu_context_activate(bool drw_state);
 void DRW_cdlayer_attr_aliases_add(GPUVertFormat *format,
                                   const char *base_name,
                                   int data_type,
-                                  const char *layer_name,
+                                  blender::StringRef layer_name,
                                   bool is_active_render,
                                   bool is_active_layer);

source/blender/draw/intern/draw_cache.cc

@@ -646,7 +646,7 @@ void DRW_batch_cache_free_old(Object *ob, int ctime)
 void DRW_cdlayer_attr_aliases_add(GPUVertFormat *format,
                                   const char *base_name,
                                   const int data_type,
-                                  const char *layer_name,
+                                  const blender::StringRef layer_name,
                                   bool is_active_render,
                                   bool is_active_layer)
 {