Place stars in Jabys eyes

include/PSX/GPU/gpu.hpp

@@ -71,6 +71,10 @@ namespace JabyEngine {
             internal::render(reinterpret_cast<const uint32_t*>(&primitives), (sizeof(T)/sizeof(uint32_t))*N);
         }
 
+        static void wait_for_render() {
+            while(!GPU_IO::GPUSTAT.read().is_set(GPU_IO::GPUSTAT::GP0ReadyForCMD));
+        }
+
         uint8_t swap_buffers_vsync(uint8_t syncs, bool clear_screen = true);
     }
 }