protected override void OnUnload()
{
_cameraObject = null;
// Detach and dispose the grouping scene node with all children.
_groupNode.Parent.Children.Remove(_ambientLightNode);
_groupNode.Dispose(false);
// Dispose cloud textures.
if (_enableCloudLayer)
{
_cloudMap0.Dispose();
_cloudMap1.Dispose();
}
// Set all references to null.
_groupNode = null;
_milkyWayNode = null;
_starfieldNode = null;
_sunNode = null;
_moonNode = null;
_scatteringSkyNode = null;
_ambientLightNode = null;
_sunlightNode = null;
_moonlightNode = null;
_cloudLayerNode0 = null;
_cloudLayerNode1 = null;
_cloudMap0 = null;
_cloudMap1 = null;
}
protected override void OnUnload()
{
// Detach the scene nodes from the scene.
if (_skyGroupNode.Parent != null)
{
_skyGroupNode.Parent.Children.Remove(_skyGroupNode);
}
_lightGroupNode.Parent.Children.Remove(_lightGroupNode);
// Dispose allocated resources.
_skyGroupNode.Dispose(false);
_lightGroupNode.Dispose(false);
if (_enableClouds)
{
_cloudLayerNode0.CloudMap.Dispose();
_cloudLayerNode1.CloudMap.Dispose();
}
if (_cacheSky)
{
_sceneCaptureNode.RenderToTexture.Texture.Dispose();
_sceneCaptureNode.Dispose(false);
_cloudMapRenderer.Dispose();
_skyRenderer.Dispose();
_colorEncoder.Dispose();
_sceneCaptureRenderer.Dispose();
}
// Set references to null.
_cameraObject = null;
_skyGroupNode = null;
_lightGroupNode = null;
_milkyWayNode = null;
_starfieldNode = null;
_sunNode = null;
_moonNode = null;
_scatteringSkyNode = null;
_ambientLightNode = null;
_sunlightNode = null;
_moonlightNode = null;
_cloudLayerNode0 = null;
_cloudLayerNode1 = null;
_sceneCaptureNode = null;
SkyboxNode = null;
_cloudMapRenderer = null;
_skyRenderer = null;
_colorEncoder = null;
_sceneCaptureRenderer = null;
}
private void InitializeClouds()
{
// Add a CloudLayerNode which renders dynamic clouds.
// This layer represents dense, lit clouds at low altitude.
var cloudMap0 = new LayeredCloudMap
{
Density = 15,
Coverage = 0.5f,
Size = 2048,
};
_cloudLayerNode0 = new CloudLayerNode(cloudMap0)
{
SkyCurvature = 0.9f,
TextureMatrix = CreateScale(0.5f),
ForwardScatterExponent = 10,
ForwardScatterScale = 10f,
ForwardScatterOffset = 0.3f,
NumberOfSamples = 16,
HorizonFade = 0.03f,
};
// Define the layers which are combined to a single CloudMap.Texture in the CloudMapRenderer.
var scale = CreateScale(0.2f);
float animationScale = _enableCloudAnimation ? 0.01f : 0.0f;
cloudMap0.Layers[0] = new CloudMapLayer(null, scale * CreateScale(1), -0.5f, 1, 1 * animationScale);
cloudMap0.Layers[1] = new CloudMapLayer(null, scale * CreateScale(1.7f), -0.5f, 1f / 2f, 5 * animationScale);
cloudMap0.Layers[2] = new CloudMapLayer(null, scale * CreateScale(3.97f), -0.5f, 1f / 4f, 13 * animationScale);
cloudMap0.Layers[3] = new CloudMapLayer(null, scale * CreateScale(8.1f), -0.5f, 1f / 8f, 27 * animationScale);
cloudMap0.Layers[4] = new CloudMapLayer(null, scale * CreateScale(16, 17), -0.5f, 1f / 16f, 43 * animationScale);
cloudMap0.Layers[5] = new CloudMapLayer(null, scale * CreateScale(32, 31), -0.5f, 1f / 32f, 77 * animationScale);
cloudMap0.Layers[6] = new CloudMapLayer(null, scale * CreateScale(64, 67), -0.5f, 1f / 64f, 127 * animationScale);
cloudMap0.Layers[7] = new CloudMapLayer(null, scale * CreateScale(128, 127), -0.5f, 1f / 64f, 200 * animationScale);
_skyGroupNode.Children.Add(_cloudLayerNode0);
// Add a second CloudLayerNode which renders dynamic clouds.
// This layer represents light clouds at high altitude.
var cloudMap1 = new LayeredCloudMap
{
Density = 2,
Coverage = 0.4f,
Size = 1024,
Seed = 77777,
};
_cloudLayerNode1 = new CloudLayerNode(cloudMap1)
{
SkyCurvature = 0.9f,
TextureMatrix = CreateScale(0.5f),
ForwardScatterExponent = 10,
ForwardScatterScale = 10f,
ForwardScatterOffset = 0f,
NumberOfSamples = 0, // No samples to disable lighting calculations.
HorizonFade = 0.03f,
Alpha = 0.5f, // Make these clouds more transparent.
};
scale = CreateScale(0.25f);
cloudMap1.Layers[0] = new CloudMapLayer(null, scale * CreateScale(1), -0.5f, 1, 0);
cloudMap1.Layers[1] = new CloudMapLayer(null, scale * CreateScale(1.7f), -0.5f, 1f / 2f, 0);
cloudMap1.Layers[2] = new CloudMapLayer(null, scale * CreateScale(3.97f), -0.5f, 1f / 4f, 0);
cloudMap1.Layers[3] = new CloudMapLayer(null, scale * CreateScale(8.1f), -0.5f, 1f / 8f, 0);
cloudMap1.Layers[4] = new CloudMapLayer(null, scale * CreateScale(16, 17), -0.5f, 1f / 16f, 0);
cloudMap1.Layers[5] = new CloudMapLayer(null, scale * CreateScale(32, 31), -0.5f, 1f / 32f, 0);
cloudMap1.Layers[6] = new CloudMapLayer(null, scale * CreateScale(64, 67), -0.5f, 1f / 64f, 0);
cloudMap1.Layers[7] = new CloudMapLayer(null, scale * CreateScale(128, 127), -0.5f, 1f / 128f, 0);
_skyGroupNode.Children.Add(_cloudLayerNode1);
}
public LdrSkySample(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);
var spriteFont = UIContentManager.Load <SpriteFont>("UI Themes/BlendBlue/Default");
_debugRenderer = new DebugRenderer(GraphicsService, spriteFont);
_cieSkyFilter = new CieSkyFilter(GraphicsService);
_cieSkyFilter.Exposure = 5;
_cieSkyFilter.Strength = 0.9f;
_gradientSky = new GradientSkyNode();
//_gradientSky.GroundColor = new Vector4F(0, 0, 1, 1);
//_gradientSky.ZenithColor = new Vector4F(0, 0, 1, 1);
//_gradientSky.FrontColor = new Vector4F(0, 0, 1, 1);
//_gradientSky.BackColor = new Vector4F(0, 0, 1, 1);
//_gradientSky.FrontZenithShift = 0.3f;
//_gradientSky.FrontGroundShift = 0.1f;
//_gradientSky.BackGroundShift = 0.1f;
_gradientSky.CieSkyStrength = 0;
_gradientTextureSky = new GradientTextureSkyNode();
_gradientTextureSky.TimeOfDay = _time.TimeOfDay;
_gradientTextureSky.Color = new Vector4F(1);
_gradientTextureSky.FrontTexture = ContentManager.Load <Texture2D>("Sky/GradientSkyFront");
_gradientTextureSky.BackTexture = ContentManager.Load <Texture2D>("Sky/GradientSkyBack");
_gradientTextureSky.CieSkyStrength = 1;
_scatteringSky = new ScatteringSkyNode();
_scatteringSky.SunIntensity *= 2;
_scatteringSky.BetaMie *= 2;
_scatteringSky.GMie = 0.75f;
_scatteringSky.ScaleHeight = _scatteringSky.AtmosphereHeight * 0.25f;
InitializeStarfield();
_cloudMapRenderer = new CloudMapRenderer(GraphicsService);
_skyRenderer = new SkyRenderer(GraphicsService);
_milkyWay = ContentManager.Load <TextureCube>("Sky/MilkyWay");
_milkyWaySkybox = new SkyboxNode(_milkyWay)
{
Color = new Vector3F(0.05f)
};
_sun = new SkyObjectNode
{
GlowColor0 = new Vector3F(1, 1, 1) * 5,
GlowExponent0 = 4000,
//GlowColor1 = new Vector3F(0.4f) * 0.1f,
//GlowExponent1 = 100
};
_moon = new SkyObjectNode
{
Texture = new PackedTexture(ContentManager.Load <Texture2D>("Sky/Moon")),
SunLight = new Vector3F(1, 1, 1) * 1,
AmbientLight = new Vector3F(0.001f) * 1,
LightWrap = 0.1f,
LightSmoothness = 1,
AngularDiameter = new Vector2F(MathHelper.ToRadians(5)),
GlowColor0 = new Vector3F(0.005f * 0),
GlowCutoffThreshold = 0.001f,
GlowExponent0 = 100
};
var cloudMap = new LayeredCloudMap
{
Density = 10,
Coverage = 0.5f,
Size = 1024,
};
var scale = CreateScale(0.2f);
cloudMap.Layers[0] = new CloudMapLayer(null, scale * CreateScale(1), -0.5f, 1, 0.011f * 0);
cloudMap.Layers[1] = new CloudMapLayer(null, scale * CreateScale(1.7f), -0.5f, 1f / 2f, 0.017f * 0);
cloudMap.Layers[2] = new CloudMapLayer(null, scale * CreateScale(3.97f), -0.5f, 1f / 4f, 0.033f * 0);
cloudMap.Layers[3] = new CloudMapLayer(null, scale * CreateScale(8.1f), -0.5f, 1f / 8f, 0.043f * 0);
cloudMap.Layers[4] = new CloudMapLayer(null, scale * CreateScale(16, 17), -0.5f, 1f / 16f, 0.051f * 0);
cloudMap.Layers[5] = new CloudMapLayer(null, scale * CreateScale(32, 31), -0.5f, 1f / 32f, 0.059f * 0);
cloudMap.Layers[6] = new CloudMapLayer(null, scale * CreateScale(64, 67), -0.5f, 1f / 64f, 0.067f * 0);
cloudMap.Layers[7] = new CloudMapLayer(null, scale * CreateScale(128, 127), -0.5f, 1f / 128f, 0.081f * 0);
_cloudLayerNode = new CloudLayerNode(cloudMap)
{
ForwardScatterScale = 2.5f,
ForwardScatterOffset = 0.3f,
TextureMatrix = CreateScale(0.5f),
SkyCurvature = 0.9f,
NumberOfSamples = 16,
};
_ephemeris = new Ephemeris();
// Approx. location of Ternberg: Latitude = 48, Longitude = 15, Altitude = 300
_ephemeris.Latitude = 0;
_ephemeris.Longitude = 15;
_ephemeris.Altitude = 300;
#if XBOX
//_time = new DateTime(2013, 5, 1, 17, 17, 0, 0);
_time = DateTime.Now;
#else
_time = new DateTimeOffset(2013, 5, 1, 12, 0, 0, 0, TimeSpan.Zero);
//_time = DateTimeOffset.UtcNow;
#endif
UpdateEphemeris();
_milkyWaySkybox.DrawOrder = 0;
_starfield.DrawOrder = 1;
_sun.DrawOrder = 2;
_moon.DrawOrder = 3;
_scatteringSky.DrawOrder = 4;
_gradientSky.DrawOrder = 4;
_gradientTextureSky.DrawOrder = 4;
_cloudLayerNode.DrawOrder = 5;
_skyNodes = new SceneNode[]
{
_milkyWaySkybox,
_starfield,
_sun,
_moon,
_scatteringSky,
//_gradientSky,
//_gradientTextureSky,
_cloudLayerNode,
};
var graphicsDevice = GraphicsService.GraphicsDevice;
_skybox = new SkyboxNode(
new RenderTargetCube(graphicsDevice, 512, false, SurfaceFormat.Color, DepthFormat.None))
{
Encoding = ColorEncoding.Rgbm,
};
_hdrFilter = new HdrFilter(GraphicsService)
{
MinExposure = 0.5f,
MaxExposure = 2,
BloomIntensity = 1,
BloomThreshold = 0.6f,
AdaptionSpeed = 100,
};
_colorEncoder = new ColorEncoder(GraphicsService)
{
SourceEncoding = ColorEncoding.Rgb,
TargetEncoding = _skybox.Encoding,
};
}
protected override void OnLoad()
{
_inputService = _services.GetInstance <IInputService>();
_graphicsService = _services.GetInstance <IGraphicsService>();
_scene = _services.GetInstance <IScene>();
var content = _services.GetInstance <ContentManager>();
var gameObjectService = _services.GetInstance <IGameObjectService>();
_cameraObject = (CameraObject)gameObjectService.Objects["Camera"];
// This scene node is used as the parent of all other scene nodes created here.
_groupNode = new SceneNode
{
Name = "ScatteringSkyGroup",
Children = new SceneNodeCollection()
};
_scene.Children.Add(_groupNode);
// Add a skybox with milky way cube map.
_milkyWayNode = new SkyboxNode(content.Load <TextureCube>("Sky/MilkyWay"))
{
Color = new Vector3F(MilkyWayLightScale),
};
_groupNode.Children.Add(_milkyWayNode);
// Add a starfield with all visible stars from a star catalog.
InitializeStarfield();
_groupNode.Children.Add(_starfieldNode);
// Add a node which draws a sun disk.
_sunNode = new SkyObjectNode
{
GlowExponent0 = 4000,
};
_groupNode.Children.Add(_sunNode);
// Add a node which draws a moon texture including moon phase.
_moonNode = new SkyObjectNode
{
Texture = new PackedTexture(content.Load <Texture2D>("Sky/Moon")),
LightWrap = 0.1f,
LightSmoothness = 1,
AngularDiameter = new Vector2F(MathHelper.ToRadians(5)),
// Disable glow.
GlowColor0 = new Vector3F(0),
GlowColor1 = new Vector3F(0),
};
_groupNode.Children.Add(_moonNode);
// Add a ScatteringSky which renders the sky colors using a physically-based model.
_scatteringSkyNode = new ScatteringSkyNode
{
SunIntensity = 1,
// Set a base color to get a dark blue instead of a pitch black night.
BaseHorizonColor = new Vector3F(0.043f, 0.090f, 0.149f) * 0.01f,
BaseZenithColor = new Vector3F(0.024f, 0.051f, 0.102f) * 0.01f,
BaseColorShift = 0.5f
};
_groupNode.Children.Add(_scatteringSkyNode);
if (_enableCloudLayer)
{
// Add a CloudLayerNode which renders dynamic clouds.
// This layer represents dense, lit clouds at low altitude.
_cloudMap0 = new LayeredCloudMap
{
Density = 15,
Coverage = 0.5f,
Size = 2048,
};
_cloudLayerNode0 = new CloudLayerNode(_cloudMap0)
{
SkyCurvature = 0.9f,
TextureMatrix = CreateScale(0.5f),
ForwardScatterExponent = 10,
ForwardScatterScale = 10f,
ForwardScatterOffset = 0.3f,
NumberOfSamples = 16,
HorizonFade = 0.03f,
};
// Define the layers which are combined to a single CloudMap.Texture in the CloudMapRenderer.
var scale = CreateScale(0.2f);
float animationScale = 0.01f;
animationScale = 0; // Uncomment to enable formation and dissolution of clouds.
_cloudMap0.Layers[0] = new CloudMapLayer(null, scale * CreateScale(1), -0.5f, 1, 1 * animationScale);
_cloudMap0.Layers[1] = new CloudMapLayer(null, scale * CreateScale(1.7f), -0.5f, 1f / 2f, 5 * animationScale);
_cloudMap0.Layers[2] = new CloudMapLayer(null, scale * CreateScale(3.97f), -0.5f, 1f / 4f, 13 * animationScale);
_cloudMap0.Layers[3] = new CloudMapLayer(null, scale * CreateScale(8.1f), -0.5f, 1f / 8f, 27 * animationScale);
_cloudMap0.Layers[4] = new CloudMapLayer(null, scale * CreateScale(16, 17), -0.5f, 1f / 16f, 43 * animationScale);
_cloudMap0.Layers[5] = new CloudMapLayer(null, scale * CreateScale(32, 31), -0.5f, 1f / 32f, 77 * animationScale);
_cloudMap0.Layers[6] = new CloudMapLayer(null, scale * CreateScale(64, 67), -0.5f, 1f / 64f,
127 * animationScale);
_cloudMap0.Layers[7] = new CloudMapLayer(null, scale * CreateScale(128, 127), -0.5f, 1f / 64f,
200 * animationScale);
_groupNode.Children.Add(_cloudLayerNode0);
// Add a second CloudLayerNode which renders dynamic clouds.
// This layer represents light clouds at high altitude.
_cloudMap1 = new LayeredCloudMap
{
Density = 2,
Coverage = 0.4f,
Size = 1024,
Seed = 77777,
};
_cloudLayerNode1 = new CloudLayerNode(_cloudMap1)
{
SkyCurvature = 0.9f,
TextureMatrix = CreateScale(0.5f),
ForwardScatterExponent = 10,
ForwardScatterScale = 10f,
ForwardScatterOffset = 0f,
NumberOfSamples = 0, // No samples to disable lighting calculations.
HorizonFade = 0.03f,
Alpha = 0.5f, // Make these clouds more transparent.
};
scale = CreateScale(0.25f);
_cloudMap1.Layers[0] = new CloudMapLayer(null, scale * CreateScale(1), -0.5f, 1, 0);
_cloudMap1.Layers[1] = new CloudMapLayer(null, scale * CreateScale(1.7f), -0.5f, 1f / 2f, 0);
_cloudMap1.Layers[2] = new CloudMapLayer(null, scale * CreateScale(3.97f), -0.5f, 1f / 4f, 0);
_cloudMap1.Layers[3] = new CloudMapLayer(null, scale * CreateScale(8.1f), -0.5f, 1f / 8f, 0);
_cloudMap1.Layers[4] = new CloudMapLayer(null, scale * CreateScale(16, 17), -0.5f, 1f / 16f, 0);
_cloudMap1.Layers[5] = new CloudMapLayer(null, scale * CreateScale(32, 31), -0.5f, 1f / 32f, 0);
_cloudMap1.Layers[6] = new CloudMapLayer(null, scale * CreateScale(64, 67), -0.5f, 1f / 64f, 0);
_cloudMap1.Layers[7] = new CloudMapLayer(null, scale * CreateScale(128, 127), -0.5f, 1f / 128f, 0);
_groupNode.Children.Add(_cloudLayerNode1);
}
// The following scene nodes inherit from SkyNode and are rendered by a SkyRenderer
// in the DeferredLightingScreen. We have to set the DrawOrder to render them from
// back to front.
_milkyWayNode.DrawOrder = 0;
_starfieldNode.DrawOrder = 1;
_sunNode.DrawOrder = 2;
_moonNode.DrawOrder = 3;
_scatteringSkyNode.DrawOrder = 4;
if (_enableCloudLayer)
{
_cloudLayerNode1.DrawOrder = 5;
_cloudLayerNode0.DrawOrder = 6;
}
// Add an ambient light.
var ambientLight = new AmbientLight
{
HemisphericAttenuation = 1,
};
_ambientLightNode = new LightNode(ambientLight)
{
Name = "Ambient",
};
_groupNode.Children.Add(_ambientLightNode);
// Add a directional light for the sun.
_sunlightNode = new LightNode(new DirectionalLight())
{
Name = "Sunlight",
Priority = 10, // This is the most important light.
// This light uses Cascaded Shadow Mapping.
Shadow = new CascadedShadow
{
PreferredSize = 1024,
DepthBiasScale = new Vector4F(0.99f),
DepthBiasOffset = new Vector4F(0),
FadeOutDistance = 20,
MaxDistance = 30,
MinLightDistance = 100,
ShadowFog = 0.5f,
JitterResolution = 3000,
SplitDistribution = 0.7f
}
};
_groupNode.Children.Add(_sunlightNode);
// Add a directional light for the moonlight.
_moonlightNode = new LightNode(new DirectionalLight())
{
Name = "Moonlight",
Priority = 5,
};
_groupNode.Children.Add(_moonlightNode);
// The Ephemeris class computes the positions of the sun and the moon as seen
// from any place on the earth.
_ephemeris = new Ephemeris();
// Seattle, Washington
_ephemeris.Latitude = 47;
_ephemeris.Longitude = 122;
_ephemeris.Altitude = 100;
#if XBOX
_time = DateTime.Now;
#else
_time = DateTimeOffset.Now;
#endif
// Update the positions of sky objects and the lights.
UpdateSky();
}
