void InitWater()
{
Bitmap normal = (Bitmap)Bitmap.FromFile(System.IO.Path.Combine("shader_data", "normalmap.png"));
reflectionTexture = RHelp.GLLoadImage(normal, false);
refractionTexture = RHelp.GLLoadImage(normal, false);
normalmap = RHelp.GLLoadImage(normal, false);
depthTexture = RHelp.GLLoadImage(normal, false);
dudvmap = RHelp.GLLoadImage((Bitmap)Bitmap.FromFile(System.IO.Path.Combine("shader_data", "dudvmap.png")), false);
waterProgram.Load("water.vert", "water.frag");
}