private readonly LensFlareRenderer _lensFlareRenderer; // Handles LensFlareNodes.
public LensFlareSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
var delegateGraphicsScreen = new DelegateGraphicsScreen(GraphicsService)
{
RenderCallback = Render,
};
GraphicsService.Screens.Insert(0, delegateGraphicsScreen);
// Add a custom game object which controls the camera.
_cameraObject = new CameraObject(Services);
GameObjectService.Objects.Add(_cameraObject);
// Create a new empty scene.
_scene = new Scene();
// Add the camera node to the scene.
_scene.Children.Add(_cameraObject.CameraNode);
// Add a few models to the scene.
var ground = ContentManager.Load<ModelNode>("Ground/Ground").Clone();
_scene.Children.Add(ground);
var box = ContentManager.Load<ModelNode>("MetalGrateBox/MetalGrateBox").Clone();
box.PoseLocal = new Pose(new Vector3F(0.5f, 0.5f, 0.5f), Matrix33F.CreateRotationY(0.1f));
_scene.Children.Add(box);
// Add some lights to the scene which have the same properties as the lights
// of BasicEffect.EnableDefaultLighting().
SceneSample.InitializeDefaultXnaLights(_scene);
// Add a lens flare for the sun light.
var lensFlare = new LensFlare(true); // The sun is a directional light source.
lensFlare.Name = "Sun Flare";
// The Size determines the screen size of the lens flare elements. The value
// is relative to the viewport height.
lensFlare.Size = 0.28f; // 0.28 * viewport height
// The QuerySize of a directional light is the estimated size relative to the
// viewport. This value is used in the hardware occlusion query, which determines
// whether the lens flare is visible.
lensFlare.QuerySize = 0.18f; // 0.18 * viewport height
// All lens flare elements are packed into one texture ("texture atlas").
// The PackedTexture identifies an element within the texture atlas.
// See file Media/LensFlare/LensFlares.png.
// (Credits: The sun lens flare was copied from the XNA racing game - http://exdream.com/XnaRacingGame/.)
var lensFlareTexture = ContentManager.Load<Texture2D>("LensFlare/LensFlares");
var circleTexture = new PackedTexture("Circle", lensFlareTexture, new Vector2F(0, 0), new Vector2F(0.25f, 0.5f));
var glowTexture = new PackedTexture("Glow", lensFlareTexture, new Vector2F(0.25f, 0), new Vector2F(0.25f, 0.5f));
var ringTexture = new PackedTexture("Ring", lensFlareTexture, new Vector2F(0.5f, 0), new Vector2F(0.25f, 0.5f));
var haloTexture = new PackedTexture("Halo", lensFlareTexture, new Vector2F(0.75f, 0), new Vector2F(0.25f, 0.5f));
var sunTexture = new PackedTexture("Sun", lensFlareTexture, new Vector2F(0, 0.5f), new Vector2F(0.25f, 0.5f));
var streaksTexture = new PackedTexture("Streaks", lensFlareTexture, new Vector2F(0.25f, 0.5f), new Vector2F(0.25f, 0.5f));
var flareTexture = new PackedTexture("Flare", lensFlareTexture, new Vector2F(0.5f, 0.5f), new Vector2F(0.25f, 0.5f));
// Add a few elements (circles, glow, rings, halos, streaks, ...) to the lens flare.
lensFlare.Elements.Add(new LensFlareElement(-0.2f, 0.55f, 0.0f, new Color(175, 175, 255, 20), new Vector2F(0.5f, 0.5f), circleTexture));
lensFlare.Elements.Add(new LensFlareElement(0.0f, 0.9f, 0.0f, new Color(255, 255, 255, 255), new Vector2F(0.5f, 0.5f), sunTexture));
lensFlare.Elements.Add(new LensFlareElement(0.0f, 1.8f, 0.0f, new Color(255, 255, 255, 128), new Vector2F(0.5f, 0.5f), streaksTexture));
lensFlare.Elements.Add(new LensFlareElement(0.0f, 2.6f, 0.0f, new Color(255, 255, 200, 64), new Vector2F(0.5f, 0.5f), glowTexture));
lensFlare.Elements.Add(new LensFlareElement(0.5f, 0.12f, 0.0f, new Color(60, 60, 180, 35), new Vector2F(0.5f, 0.5f), circleTexture));
lensFlare.Elements.Add(new LensFlareElement(0.55f, 0.46f, 0.0f, new Color(100, 100, 200, 60), new Vector2F(0.5f, 0.5f), circleTexture));
lensFlare.Elements.Add(new LensFlareElement(0.6f, 0.17f, 0.0f, new Color(120, 120, 220, 40), new Vector2F(0.5f, 0.5f), circleTexture));
lensFlare.Elements.Add(new LensFlareElement(0.85f, 0.2f, 0.0f, new Color(60, 60, 255, 100), new Vector2F(0.5f, 0.5f), ringTexture));
lensFlare.Elements.Add(new LensFlareElement(1.5f, 0.2f, 0.0f, new Color(255, 60, 60, 130), new Vector2F(0.5f, 0.5f), flareTexture));
lensFlare.Elements.Add(new LensFlareElement(0.15f, 0.15f, 0.0f, new Color(255, 60, 60, 90), new Vector2F(0.5f, 0.5f), flareTexture));
lensFlare.Elements.Add(new LensFlareElement(1.3f, 0.6f, 0.0f, new Color(60, 60, 255, 180), new Vector2F(0.5f, 0.5f), haloTexture));
lensFlare.Elements.Add(new LensFlareElement(1.4f, 0.2f, 0.0f, new Color(220, 80, 80, 98), new Vector2F(0.5f, 0.5f), haloTexture));
lensFlare.Elements.Add(new LensFlareElement(1.5f, 0.1f, 0.0f, new Color(220, 80, 80, 85), new Vector2F(0.5f, 0.5f), circleTexture));
lensFlare.Elements.Add(new LensFlareElement(1.6f, 0.5f, 0.0f, new Color(60, 60, 255, 80), new Vector2F(0.5f, 0.5f), haloTexture));
lensFlare.Elements.Add(new LensFlareElement(1.8f, 0.3f, 0.0f, new Color(90, 60, 255, 110), new Vector2F(0.5f, 0.5f), ringTexture));
lensFlare.Elements.Add(new LensFlareElement(1.95f, 0.5f, 0.0f, new Color(60, 60, 255, 120), new Vector2F(0.5f, 0.5f), haloTexture));
lensFlare.Elements.Add(new LensFlareElement(2.0f, 0.15f, 0.0f, new Color(60, 60, 255, 85), new Vector2F(0.5f, 0.5f), circleTexture));
// The scene node "KeyLight" (defined in SceneSample.InitializeDefaultXnaLights())
// is the main directional light source.
var keyLightNode = _scene.GetDescendants().First(n => n.Name == "KeyLight");
// Let's attach the lens flare to the "KeyLight" node.
// (Note: It is not necessary to attach a lens flare to a light node. Lens flares
// can be added anywhere within the scene. But attaching the lens flare to the
// light node ensures that the lens flare always has the same position and direction
// as the light source.)
var lensFlareNode = new LensFlareNode(lensFlare);
keyLightNode.Children = new SceneNodeCollection();
keyLightNode.Children.Add(lensFlareNode);
// Add a second lens flare.
// The previous lens flare was a caused by a directional light source (distance = infinite).
// This time we add a local lens flare.
lensFlare = new LensFlare(false);
lensFlare.Name = "Anamorphic Flare";
lensFlare.Size = 0.3f; // 0.3 * viewport height
// The QuerySize of a local lens flare is estimated size of the light source
// in world space.
lensFlare.QuerySize = 0.2f; // 0.2 meters
// Add some elements (glow, horizontal streaks, ...) to the lens flare effect.
var anamorphicFlareTexture = ContentManager.Load<Texture2D>("LensFlare/AnamorphicFlare");
flareTexture = new PackedTexture("AnamorphicFlare", anamorphicFlareTexture, new Vector2F(0, 0), new Vector2F(1.0f, 87f / 256f));
var flare1Texture = new PackedTexture("Flare0", anamorphicFlareTexture, new Vector2F(227f / 512f, 88f / 256f), new Vector2F(285f / 512f, 15f / 256f));
var flare2Texture = new PackedTexture("Flare1", anamorphicFlareTexture, new Vector2F(0, 87f / 256f), new Vector2F(226f / 512f, 168f / 256f));
lensFlare.Elements.Add(new LensFlareElement(0.0f, 0.8f, 0.0f, new Color(255, 255, 255, 255), new Vector2F(0.5f, 0.5f), flareTexture));
lensFlare.Elements.Add(new LensFlareElement(1.0f, new Vector2F(0.6f, 0.5f), 0.0f, new Color(172, 172, 255, 32), new Vector2F(0.5f, 0.5f), flare1Texture));
lensFlare.Elements.Add(new LensFlareElement(1.5f, 1.2f, float.NaN, new Color(200, 200, 255, 24), new Vector2F(0.5f, 0.2f), flare2Texture));
lensFlare.Elements.Add(new LensFlareElement(2.0f, 2.0f, float.NaN, new Color(172, 172, 255, 48), new Vector2F(0.5f, 0.2f), flare2Texture));
// Position the lens flare near the origin.
lensFlareNode = new LensFlareNode(lensFlare);
lensFlareNode.PoseWorld = new Pose(new Vector3F(-0.5f, 1, 0));
_scene.Children.Add(lensFlareNode);
// In this example we need two renderers:
// The MeshRenderer handles MeshNodes.
_meshRenderer = new MeshRenderer();
// The LensFlareRenderer handles LensFlareNodes.
_lensFlareRenderer = new LensFlareRenderer(GraphicsService);
}
//--------------------------------------------------------------
#region Creation & Cleanup
//--------------------------------------------------------------
public DeferredGraphicsScreen(IServiceLocator services)
: base(services.GetInstance<IGraphicsService>())
{
_sampleFramework = services.GetInstance<SampleFramework>();
var contentManager = services.GetInstance<ContentManager>();
SpriteBatch = GraphicsService.GetSpriteBatch();
// Let's create the necessary scene node renderers:
#if !XBOX360
TerrainRenderer = new TerrainRenderer(GraphicsService);
#endif
MeshRenderer = new MeshRenderer();
// The _opaqueMeshSceneRenderer combines all renderers for opaque
// (= not alpha blended) meshes.
_opaqueMeshSceneRenderer = new SceneRenderer();
#if !XBOX360
_opaqueMeshSceneRenderer.Renderers.Add(TerrainRenderer);
#endif
_opaqueMeshSceneRenderer.Renderers.Add(MeshRenderer);
_decalRenderer = new DecalRenderer(GraphicsService);
_billboardRenderer = new BillboardRenderer(GraphicsService, 2048)
{
EnableSoftParticles = true,
// If you have an extreme amount of particles that cover the entire screen,
// you can turn on offscreen rendering to improve performance.
//EnableOffscreenRendering = true,
};
// The AlphaBlendSceneRenderer combines all renderers for transparent
// (= alpha blended) objects.
AlphaBlendSceneRenderer = new SceneRenderer();
AlphaBlendSceneRenderer.Renderers.Add(MeshRenderer);
AlphaBlendSceneRenderer.Renderers.Add(_billboardRenderer);
AlphaBlendSceneRenderer.Renderers.Add(new WaterRenderer(GraphicsService));
AlphaBlendSceneRenderer.Renderers.Add(new FogSphereRenderer(GraphicsService));
AlphaBlendSceneRenderer.Renderers.Add(new VolumetricLightRenderer(GraphicsService));
#if !XBOX360
// Update terrain clipmaps. (Only necessary if TerrainNodes are used.)
_terrainClipmapRenderer = new TerrainClipmapRenderer(GraphicsService);
#endif
// Renderer for cloud maps. (Only necessary if LayeredCloudMaps are used.)
_cloudMapRenderer = new CloudMapRenderer(GraphicsService);
// Renderer for SceneCaptureNodes. See also SceneCapture2DSample.
// In the constructor we specify a method which is called in SceneCaptureRenderer.Render()
// when the scene must be rendered for the SceneCaptureNodes.
SceneCaptureRenderer = new SceneCaptureRenderer(context =>
{
// Get scene nodes which are visible by the current camera.
CustomSceneQuery sceneQuery = Scene.Query<CustomSceneQuery>(context.CameraNode, context);
// Render scene (with post-processing, with lens flares, no debug rendering, no reticle).
RenderScene(sceneQuery, context, true, true, false, false);
});
// Renderer for PlanarReflectionNodes. See also PlanarReflectionSample.
// In the constructor we specify a method which is called in PlanarReflectionRenderer.Render()
// to create the reflection images.
_planarReflectionRenderer = new PlanarReflectionRenderer(context =>
{
// Get scene nodes which are visible by the current camera.
CustomSceneQuery sceneQuery = Scene.Query<CustomSceneQuery>(context.CameraNode, context);
var planarReflectionNode = (PlanarReflectionNode)context.ReferenceNode;
// Planar reflections are often for WaterNodes. These nodes should not be rendered
// into their own reflection map because when the water surface is displaced by waves,
// some waves could be visible in the reflection.
// --> Remove the water node from the renderable nodes. (In our samples, the water
// node is the parent of the reflection node.)
if (planarReflectionNode.Parent is WaterNode)
{
var index = sceneQuery.RenderableNodes.IndexOf(planarReflectionNode.Parent);
if (index >= 0)
sceneQuery.RenderableNodes[index] = null;
}
// Render scene (no post-processing, no lens flares, no debug rendering, no reticle).
RenderScene(sceneQuery, context, false, false, false, false);
});
_waterWavesRenderer = new WaterWavesRenderer(GraphicsService);
// The shadow map renderer renders a depth image from the viewpoint of the light and
// stores it in LightNode.Shadow.ShadowMap.
ShadowMapRenderer = new ShadowMapRenderer(context =>
{
var query = context.Scene.Query<ShadowCasterQuery>(context.CameraNode, context);
if (query.ShadowCasters.Count == 0)
return false;
_opaqueMeshSceneRenderer.Render(query.ShadowCasters, context);
return true;
});
// The shadow mask renderer evaluates the shadow maps, does shadow filtering
// and stores the resulting shadow factor in a screen space image
//(see LightNode.Shadow.ShadowMask/ShadowMaskChannel).
ShadowMaskRenderer = new ShadowMaskRenderer(GraphicsService, 2);
// Optionally, we can blur the shadow mask to make the shadows smoother.
var blur = new Blur(GraphicsService)
{
IsAnisotropic = false,
IsBilateral = true,
EdgeSoftness = 0.05f,
Scale = 1f,
Enabled = false, // Disable blur by default.
};
blur.InitializeGaussianBlur(11, 3, true);
ShadowMaskRenderer.Filter = blur;
// Renderers which create the intermediate render targets:
// Those 2 renderers are implemented in this sample. Those functions could
// be implemented directly in this class but we have created separate classes
// to make the code more readable.
_gBufferRenderer = new GBufferRenderer(GraphicsService, _opaqueMeshSceneRenderer, _decalRenderer);
LightBufferRenderer = new LightBufferRenderer(GraphicsService);
// Other specialized renderers:
_lensFlareRenderer = new LensFlareRenderer(GraphicsService);
_skyRenderer = new SkyRenderer(GraphicsService);
_fogRenderer = new FogRenderer(GraphicsService);
_internalDebugRenderer = new DebugRenderer(GraphicsService, null);
_rebuildZBufferRenderer = new RebuildZBufferRenderer(GraphicsService);
Scene = new Scene();
// This screen needs a HDR filter to map high dynamic range values back to
// low dynamic range (LDR).
PostProcessors = new PostProcessorChain(GraphicsService);
PostProcessors.Add(new HdrFilter(GraphicsService)
{
EnableBlueShift = true,
BlueShiftCenter = 0.0004f,
BlueShiftRange = 0.5f,
//BlueShiftColor = new Vector3F(1.05f / 4f, 0.97f / 4f, 1.27f / 4f), // Default physically-based blue-shift
BlueShiftColor = new Vector3F(0.25f, 0.25f, 0.7f), // More dramatic blue-shift
MinExposure = 0,
MaxExposure = 10,
BloomIntensity = 1,
BloomThreshold = 0.6f,
});
_underwaterPostProcessor = new UnderwaterPostProcessor(GraphicsService, contentManager);
PostProcessors.Add(_underwaterPostProcessor);
// Use 2D texture for reticle.
_reticle = contentManager.Load<Texture2D>("Reticle");
// Use the sprite font of the GUI.
var uiContentManager = services.GetInstance<ContentManager>("UIContent");
var spriteFont = uiContentManager.Load<SpriteFont>("UI Themes/BlendBlue/Default");
DebugRenderer = new DebugRenderer(GraphicsService, spriteFont)
{
DefaultColor = new Color(0, 0, 0),
DefaultTextPosition = new Vector2F(10),
};
EnableLod = true;
}