Draws a rectangle at position pos and with size dimensions.
color1 upper left cornercolor2 upper right cornercolor3 lower left cornercolor4 lower right cornerSample:
void onSceneUpdate()
{
uint black = 0xFF000000;
uint dark = 0xFF0A0A0A;
DrawRectangle(vector2(2, 250), vector2(64,64), black, black, dark, dark);
}