func key(w *glfw.Window, key glfw.Key, scancode int, action glfw.Action, mods glfw.ModifierKey) {
if key == glfw.KeyEscape && action == glfw.Press {
w.SetShouldClose(true)
} else if key == glfw.KeySpace && action == glfw.Press {
blowup = !blowup
} else if key == glfw.KeyP && action == glfw.Press {
premult = !premult
}
}
func getMouseState(w *glfw.Window) gxui.MouseState {
var s gxui.MouseState
for _, button := range []glfw.MouseButton{glfw.MouseButtonLeft, glfw.MouseButtonMiddle, glfw.MouseButtonRight} {
if w.GetMouseButton(button) == glfw.Press {
s |= 1 << uint(translateMouseButton(button))
}
}
return s
}