private static Viewport GetViewport(CascadedShadow shadow, int split)
{
return(new Viewport
{
X = split * shadow.ShadowMap.Width / shadow.NumberOfCascades,
Y = 0,
Width = shadow.ShadowMap.Width / shadow.NumberOfCascades,
Height = shadow.ShadowMap.Height,
MinDepth = 0,
MaxDepth = 1,
});
}
public CascadedShadowSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
_graphicsScreen = new DeferredGraphicsScreen(Services)
{
// For debugging: Disable materials and only show light buffer.
DebugMode = DeferredGraphicsDebugMode.VisualizeDiffuseLightBuffer
};
_graphicsScreen.DrawReticle = true;
GraphicsService.Screens.Insert(0, _graphicsScreen);
GameObjectService.Objects.Add(new DeferredGraphicsOptionsObject(Services));
Services.Register(typeof(DebugRenderer), null, _graphicsScreen.DebugRenderer);
Services.Register(typeof(IScene), null, _graphicsScreen.Scene);
// Add gravity and damping to the physics simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a custom game object which controls the camera.
var cameraGameObject = new CameraObject(Services);
GameObjectService.Objects.Add(cameraGameObject);
_graphicsScreen.ActiveCameraNode = cameraGameObject.CameraNode;
GameObjectService.Objects.Add(new GrabObject(Services));
ShadowSample.CreateScene(Services, ContentManager, _graphicsScreen);
// Get the cascaded shadow of the sunlight (which was created by the DynamicSkyObject).
_cascadedShadow = (CascadedShadow)((LightNode)_graphicsScreen.Scene.GetSceneNode("Sunlight")).Shadow;
CreateGuiControls();
}
public CompositeShadowSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
_graphicsScreen = new DeferredGraphicsScreen(Services)
{
// For debugging: Disable materials and only show light buffer.
DebugMode = DeferredGraphicsDebugMode.VisualizeDiffuseLightBuffer
};
_graphicsScreen.DrawReticle = true;
GraphicsService.Screens.Insert(0, _graphicsScreen);
GameObjectService.Objects.Add(new DeferredGraphicsOptionsObject(Services));
Services.Register(typeof(DebugRenderer), null, _graphicsScreen.DebugRenderer);
Services.Register(typeof(IScene), null, _graphicsScreen.Scene);
// Add gravity and damping to the physics simulation.
Simulation.ForceEffects.Add(new Gravity());
Simulation.ForceEffects.Add(new Damping());
// Add a custom game object which controls the camera.
var cameraGameObject = new CameraObject(Services);
GameObjectService.Objects.Add(cameraGameObject);
_graphicsScreen.ActiveCameraNode = cameraGameObject.CameraNode;
GameObjectService.Objects.Add(new GrabObject(Services));
// Create test scene.
ShadowSample.CreateScene(Services, ContentManager, _graphicsScreen);
// Create 3 different shadows:
// The VarianceShadow covers the whole level.
_vsmShadow = new VarianceShadow
{
Prefer16Bit = false,
PreferredSize = 512,
MinLightDistance = 200,
MaxDistance = 200,
FadeOutRange = 0,
ShadowFog = 0,
TargetArea = new Aabb(new Vector3(-100, 0, -100), new Vector3(100, 50, 100))
};
_vsmShadow.Filter = new Blur(GraphicsService);
_vsmShadow.Filter.NumberOfPasses = 1;
_vsmShadow.Filter.InitializeGaussianBlur(11, 3, false);
// The CascadedShadow for static objects.
_staticCascadedShadow = new CascadedShadow
{
PreferredSize = 1024,
Prefer16Bit = true,
Distances = new Vector4(4, 12, 20, 80),
MinLightDistance = 200,
};
// The CascadedShadow for dynamic objects covering a smaller distance.
_dynamicCascadedShadow = new CascadedShadow
{
PreferredSize = 1024,
Prefer16Bit = true,
NumberOfCascades = 2,
Distances = new Vector4(4, 12, 0, 0),
MinLightDistance = 200,
};
// Get directional light created by the DynamicSkyObject and replace the default
// shadow with our a CompositeShadow.
_lightNode = _graphicsScreen.Scene.GetDescendants().OfType <LightNode>().First(n => n.Shadow is CascadedShadow);
_lightNode.Shadow = new CompositeShadow
{
Shadows =
{
_vsmShadow,
_staticCascadedShadow,
_dynamicCascadedShadow,
}
};
// We do not want to render the same objects into all 3 shadow maps. We use a custom
// render callback to render each objects into only one of the shadow maps.
_graphicsScreen.ShadowMapRenderer.RenderCallback = context =>
{
// Query all shadow casters.
var query = context.Scene.Query <ShadowCasterQuery>(context.CameraNode, context);
if (query.ShadowCasters.Count == 0)
{
return(false);
}
// Get the shadow which is currently being rendered.
var shadow = context.Object;
// Create a list of scene nodes for the current shadow.
var list = _tempList;
if (shadow == _vsmShadow)
{
// Get the hills and skyscrapers which have been marked with a user flag
// in ShadowSample.CreateScene.
foreach (var node in query.ShadowCasters)
{
if (node.UserFlags == 1)
{
_tempList.Add(node);
}
}
}
else if (shadow == _staticCascadedShadow)
{
// Get all static objects except the hills/skyscrapers.
foreach (var node in query.ShadowCasters)
{
if (node.UserFlags == 0 && node.IsStatic)
{
_tempList.Add(node);
}
}
}
else if (shadow == _dynamicCascadedShadow)
{
// Get all dynamic objects.
foreach (var node in query.ShadowCasters)
{
if (!node.IsStatic)
{
_tempList.Add(node);
}
}
}
else
{
// Other shadows of other lights.
list = query.ShadowCasters;
}
// Render the selected objects into the shadow map.
_graphicsScreen.MeshRenderer.Render(list, context);
_tempList.Clear();
return(true);
};
// Register the custom renderers for the VarianceShadow.
_graphicsScreen.ShadowMapRenderer.Renderers.Add(new VarianceShadowMapRenderer(_graphicsScreen.ShadowMapRenderer.RenderCallback));
_graphicsScreen.ShadowMaskRenderer.Renderers.Add(new VarianceShadowMaskRenderer(GraphicsService));
CreateGuiControls();
}
private static Viewport GetViewport(CascadedShadow shadow, int split)
{
return new Viewport
{
X = split * shadow.ShadowMap.Width / shadow.NumberOfCascades,
Y = 0,
Width = shadow.ShadowMap.Width / shadow.NumberOfCascades,
Height = shadow.ShadowMap.Height,
MinDepth = 0,
MaxDepth = 1,
};
}