-void R_MeshQueue_Add(void (*callback)(void *data1, int data2), void *data1, int data2);
-void R_MeshQueue_AddTransparent(vec3_t center, void (*callback)(void *data1, int data2), void *data1, int data2);
+void R_MeshQueue_Add(void (*callback)(const void *data1, int data2), const void *data1, int data2);
+void R_MeshQueue_AddTransparent(const vec3_t center, void (*callback)(const void *data1, int data2), const void *data1, int data2);