public void UpdateAmbient(int index)
{
CubeMapFace face = (CubeMapFace)index;
Surface cubeSurface = m_ambientRT.GetCubeMapSurface(face, 0);
MyMinerGame.Static.GraphicsDevice.SetRenderTarget(0, cubeSurface);
BlendState.Opaque.Apply();
MyEffectAmbientPrecalculation precalc = MyRender.GetEffect(MyEffects.AmbientMapPrecalculation) as MyEffectAmbientPrecalculation;
precalc.SetEnvironmentMap(this.m_environmentRT);
precalc.SetFaceMatrix(CreateViewMatrix(face, Vector3.Zero));
precalc.SetRandomTexture(MyRender.GetRandomTexture());
precalc.SetIterationCount(14);
precalc.SetMainVectorWeight(1.0f);
precalc.SetBacklightColorAndIntensity(new Vector3(MyRender.Sun.BackColor.X, MyRender.Sun.BackColor.Y, MyRender.Sun.BackColor.Z), MyRender.Sun.BackIntensity);
MyGuiManager.GetFullscreenQuad().Draw(precalc);
MyMinerGame.SetRenderTarget(null, null);
cubeSurface.Dispose();
}