render default preset

main.go

@@ -9,6 +9,10 @@ import "github.com/veandco/go-sdl2/sdl"
 */
 import "C"
 
+import (
+	"time"
+)
+
 func main() {
 	if err := sdl.Init(sdl.INIT_EVERYTHING); err != nil {
 		panic(err)
@@ -29,25 +33,13 @@ func main() {
 	defer sdl.GLDeleteContext(context)
 
 	handle := C.projectm_create()
-	if (handle == nil) {
+	if handle == nil {
 		panic("nil")
 	}
 	defer C.projectm_destroy(handle)
 
 	C.projectm_set_window_size(handle, 800, 600)
 
-	surface, err := window.GetSurface()
-	if err != nil {
-		panic(err)
-	}
-	surface.FillRect(nil, 0)
-
-	rect := sdl.Rect{0, 0, 200, 200}
-	colour := sdl.Color{R: 255, G: 0, B: 255, A: 255} // purple
-	pixel := sdl.MapRGBA(surface.Format, colour.R, colour.G, colour.B, colour.A)
-	surface.FillRect(&rect, pixel)
-	window.UpdateSurface()
-
 	running := true
 	for running {
 		for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
@@ -58,5 +50,9 @@ func main() {
 				break
 			}
 		}
+
+		C.projectm_opengl_render_frame(handle)
+		window.GLSwap()
+		time.Sleep(1 / 60 * time.Second)
 	}
 }