public void GenerateShadowMaps(GraphicsContext ctx, SceneGraph sceneGraph)
{
if (sceneGraph == null)
{
throw new ArgumentNullException("sceneGraph");
}
// Push current viewport to be restore later
State.ViewportState currentViewport = new State.ViewportState(ctx);
foreach (SceneObjectLight sceneLight in ShadowLights)
{
using (SceneGraph shadowGraph = new SceneGraph(sceneGraph,
//SceneGraphFlags.CullingViewFrustum | SceneGraphFlags.StateSorting
SceneGraphFlags.None
))
{
shadowGraph.SceneRoot.ObjectState.DefineState(new State.CullFaceState(CullFaceMode.Back));
sceneLight.UpdateShadowMap(ctx, shadowGraph);
}
}
// Restore viewport
currentViewport.Apply(ctx, null);
// Restore cull face state to default
State.CullFaceState.DefaultState.Apply(ctx, null);
}
