Draw manager: Expose grease pencil helper function

source/blender/draw/DRW_engine.h

@@ -128,6 +128,7 @@ void DRW_draw_depth_loop(
         struct ARegion *ar, struct View3D *v3d);
 
 /* grease pencil render */
+bool DRW_render_check_grease_pencil(struct Depsgraph *depsgraph);
 void DRW_render_gpencil(struct RenderEngine *engine, struct Depsgraph *depsgraph);
 void DRW_gpencil_freecache(struct Object *ob);
 

source/blender/draw/intern/draw_manager.c

@@ -1611,8 +1611,8 @@ void DRW_draw_render_loop_offscreen(
 	GPU_offscreen_bind(ofs, false);
 }
 
-/* helper to check if exit object type to render */
-static bool DRW_render_check_grease_pencil(Depsgraph *depsgraph)
+/* Helper to check if exit object type to render. */
+bool DRW_render_check_grease_pencil(Depsgraph *depsgraph)
 {
 	DEG_OBJECT_ITER_FOR_RENDER_ENGINE_BEGIN(depsgraph, ob)
 	{