//--------------------------------------------------------------
/// <overloads>
/// <summary>
/// Initializes a new instance of the <see cref="TerrainRoadLayer"/> class.
/// </summary>
/// </overloads>
///
/// <summary>
/// Initializes a new instance of the <see cref="TerrainRoadLayer"/> class with the default
/// material.
/// </summary>
/// <param name="graphicService">The graphic service.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="graphicService"/> is <see langword="null"/>.
/// </exception>
public TerrainRoadLayer(IGraphicsService graphicService)
{
if (graphicService == null)
throw new ArgumentNullException("graphicService");
var effect = graphicService.Content.Load<Effect>("DigitalRune/Terrain/TerrainRoadLayer");
Material = new Material
{
{ "Detail", new EffectBinding(graphicService, effect, null, EffectParameterHint.Material) }
};
FadeOutStart = int.MaxValue;
FadeOutEnd = int.MaxValue;
TileSize = 1;
DiffuseColor = new Vector3F(1, 1, 1);
SpecularColor = new Vector3F(1, 1, 1);
SpecularPower = 10;
Alpha = 1;
DiffuseTexture = graphicService.GetDefaultTexture2DWhite();
SpecularTexture = graphicService.GetDefaultTexture2DBlack();
NormalTexture = graphicService.GetDefaultNormalTexture();
HeightTextureScale = 1;
HeightTexture = graphicService.GetDefaultTexture2DBlack();
RoadLength = 1;
}
protected virtual void CloneCore(Material source)
{
Name = source.Name;
// Clone all effect bindings (deep copy).
foreach (var pass in source)
_bindingsPerPass.Add(pass.Key, pass.Value.Clone());
}
private static OutlineItem CreateOutlineItem(Material material)
{
var item = new OutlineItem
{
Text = $"Material \"{material.Name}\"",
Icon = MultiColorGlyphs.Texture,
ToolTip = ToolTipSceneNode,
UserData = material,
};
return(item);
}
/// <summary>
/// Initializes a new instance of the <see cref="TerrainClearLayer"/> class.
/// </summary>
/// <param name="graphicService">The graphic service.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="graphicService"/> is <see langword="null"/>.
/// </exception>
public TerrainClearLayer(IGraphicsService graphicService)
{
if (graphicService == null)
throw new ArgumentNullException("graphicService");
var effect = graphicService.Content.Load<Effect>("DigitalRune/Terrain/TerrainClearLayer");
var effectBinding = new EffectBinding(graphicService, effect, null, EffectParameterHint.Material);
Material = new Material
{
{ "Base", effectBinding },
{ "Detail", effectBinding }
};
MaterialInstance = new MaterialInstance(Material);
}
public static void SetMaterial(this Submesh submesh, Material material)
{
if (submesh == null)
throw new ArgumentNullException("submesh");
var mesh = submesh.Mesh;
if (mesh == null)
throw new InvalidOperationException("Cannot add material to submesh. Submesh needs to be added to Mesh first.");
if (material == null)
throw new ArgumentNullException("material");
var oldMaterial = GetMaterial(submesh);
if (oldMaterial == material)
return;
// Find out if the old or new material is used by other submeshes which belong
// to the same mesh.
bool oldMaterialStillInUse = false;
bool newMaterialAlreadyInUse = false;
foreach (var otherSubmesh in mesh.Submeshes)
{
if (otherSubmesh != submesh)
{
Material otherMaterial = GetMaterial(otherSubmesh);
if (otherMaterial == oldMaterial)
oldMaterialStillInUse = true;
else if (otherMaterial == material)
newMaterialAlreadyInUse = true;
}
}
// Remove old material from parent mesh material collection if it is not used by
// any submesh.
int oldIndex = submesh.MaterialIndex;
if (!oldMaterialStillInUse && oldMaterial != null)
{
mesh.Materials.RemoveAt(oldIndex);
// One material was removed --> Update indices of meshes.
foreach (var otherSubmesh in mesh.Submeshes)
if (otherSubmesh.MaterialIndex > oldIndex)
otherSubmesh.MaterialIndex--;
}
// Add new material to parent mesh material collection if this is the first submesh
// that uses this material.
if (newMaterialAlreadyInUse)
{
// Get index of the new material.
submesh.MaterialIndex = mesh.Materials.IndexOf(material);
}
else
{
// Add new material to the mesh at the end of the material collection.
mesh.Materials.Add(material);
submesh.MaterialIndex = mesh.Materials.Count - 1;
}
}
//--------------------------------------------------------------
#region Methods
//--------------------------------------------------------------
protected override void OnLoad()
{
// Get common services and game objects.
_graphicsService = _services.GetInstance<IGraphicsService>();
var content = _services.GetInstance<ContentManager>();
var scene = _services.GetInstance<IScene>();
_simulation = _services.GetInstance<Simulation>();
var gameObjectService = _services.GetInstance<IGameObjectService>();
_cameraObject = gameObjectService.Objects.OfType<CameraObject>().First();
_previousCameraFar = _cameraObject.CameraNode.Camera.Projection.Far;
// Create a new terrain.
var terrain = new Terrain();
_terrainTile = new TerrainTile(_graphicsService)
{
CellSize = 2,
};
terrain.Tiles.Add(_terrainTile);
var shadowMapEffect = content.Load<Effect>("DigitalRune/Terrain/TerrainShadowMap");
var gBufferEffect = content.Load<Effect>("DigitalRune/Terrain/TerrainGBuffer");
var materialEffect = content.Load<Effect>("DigitalRune/Terrain/TerrainMaterial");
var material = new Material
{
{ "ShadowMap", new EffectBinding(_graphicsService, shadowMapEffect, null, EffectParameterHint.Material) },
{ "GBuffer", new EffectBinding(_graphicsService, gBufferEffect, null, EffectParameterHint.Material) },
{ "Material", new EffectBinding(_graphicsService, materialEffect, null, EffectParameterHint.Material) }
};
TerrainNode = new TerrainNode(terrain, material)
{
BaseClipmap =
{
CellsPerLevel = 128,
NumberOfLevels = 6,
},
DetailClipmap =
{
CellsPerLevel = 1364,
NumberOfLevels = 9,
},
};
scene.Children.Add(TerrainNode);
// Create a rigid body with a height field for collision detection.
var heightField = new HeightField
{
Depth = 1,
UseFastCollisionApproximation = false,
};
_rigidBody = new RigidBody(heightField, new MassFrame(), null)
{
MotionType = MotionType.Static,
UserData = _terrainTile,
};
_simulation.RigidBodies.Add(_rigidBody);
InitializeHeightsAndNormals();
InitializeClipmapCellSizes();
InitializeTerrainLayers(content);
// Enable mipmaps when using anisotropic filtering on AMD graphics cards:
//TerrainNode.DetailClipmap.EnableMipMap = true;
CreateGuiControls();
}
private static OutlineItem CreateOutlineItem(Material material)
{
var item = new OutlineItem
{
Text = $"Material \"{material.Name}\"",
Icon = MultiColorGlyphs.Texture,
ToolTip = ToolTipSceneNode,
UserData = material,
};
return item;
}
public static Mesh CreateMesh(IGraphicsService graphicsService, Texture2D texture)
{
if (graphicsService == null)
throw new ArgumentNullException("graphicsService");
if (texture == null)
throw new ArgumentNullException("texture");
List<Vector3> positions = new List<Vector3>();
List<ushort> indices = new List<ushort>();
// Create two rings of vertices around the top and bottom of the cylinder.
for (int i = 0; i < CylinderSegments; i++)
{
float angle = ConstantsF.TwoPi * i / CylinderSegments;
float x = (float)Math.Cos(angle) * CylinderSize;
float z = (float)Math.Sin(angle) * CylinderSize;
positions.Add(new Vector3(x, CylinderSize * 5 / 12, z));
positions.Add(new Vector3(x, -CylinderSize * 5 / 12, z));
}
// Create two center vertices, used for closing the top and bottom.
positions.Add(new Vector3(0, CylinderSize, 0));
positions.Add(new Vector3(0, -CylinderSize, 0));
// Create the individual triangles that make up our skydome.
List<VertexPositionTexture> vertices = new List<VertexPositionTexture>();
ushort index = 0;
for (int i = 0; i < CylinderSegments; i++)
{
int j = (i + 1) % CylinderSegments;
// Calculate texture coordinates for this segment of the cylinder.
float u1 = (float)i / (float)CylinderSegments;
float u2 = (float)(i + 1) / (float)CylinderSegments;
// Two triangles form a quad, one side segment of the cylinder.
vertices.Add(new VertexPositionTexture(positions[i * 2], new Vector2(u1, TexCoordTop)));
indices.Add(index++);
vertices.Add(new VertexPositionTexture(positions[j * 2], new Vector2(u2, TexCoordTop)));
indices.Add(index++);
vertices.Add(new VertexPositionTexture(positions[i * 2 + 1], new Vector2(u1, TexCoordBottom)));
indices.Add(index++);
vertices.Add(new VertexPositionTexture(positions[j * 2], new Vector2(u2, TexCoordTop)));
indices.Add(index++);
vertices.Add(new VertexPositionTexture(positions[j * 2 + 1], new Vector2(u2, TexCoordBottom)));
indices.Add(index++);
vertices.Add(new VertexPositionTexture(positions[i * 2 + 1], new Vector2(u1, TexCoordBottom)));
indices.Add(index++);
// Triangle fanning inward to fill the top above this segment.
vertices.Add(new VertexPositionTexture(positions[CylinderSegments * 2], new Vector2(u1, 0)));
indices.Add(index++);
vertices.Add(new VertexPositionTexture(positions[j * 2], new Vector2(u2, TexCoordTop)));
indices.Add(index++);
vertices.Add(new VertexPositionTexture(positions[i * 2], new Vector2(u1, TexCoordTop)));
indices.Add(index++);
// Triangle fanning inward to fill the bottom below this segment.
vertices.Add(new VertexPositionTexture(positions[CylinderSegments * 2 + 1], new Vector2(u1, 1)));
indices.Add(index++);
vertices.Add(new VertexPositionTexture(positions[i * 2 + 1], new Vector2(u1, TexCoordBottom)));
indices.Add(index++);
vertices.Add(new VertexPositionTexture(positions[j * 2 + 1], new Vector2(u2, TexCoordBottom)));
indices.Add(index++);
}
// Create the vertex buffer.
VertexBuffer vertexBuffer = new VertexBuffer(
graphicsService.GraphicsDevice,
VertexPositionTexture.VertexDeclaration,
vertices.Count, BufferUsage.
None);
vertexBuffer.SetData(vertices.ToArray());
// Create the index buffer.
IndexBuffer indexBuffer = new IndexBuffer(
graphicsService.GraphicsDevice,
IndexElementSize.SixteenBits,
indices.Count,
BufferUsage.None);
indexBuffer.SetData(indices.ToArray());
// Create a submesh, which is a set of primitives which can be rendered in
// one draw call.
Submesh submesh = new Submesh
{
PrimitiveCount = indices.Count / 3,
PrimitiveType = PrimitiveType.TriangleList,
StartIndex = 0,
StartVertex = 0,
VertexCount = vertices.Count,
VertexBuffer = vertexBuffer,
IndexBuffer = indexBuffer,
};
// Create a mesh (which is collection of submeshes and materials).
Mesh mesh = new Mesh
{
Name = "Sky",
BoundingShape = new CylinderShape(CylinderSize, 2 * CylinderSize),
};
mesh.Submeshes.Add(submesh);
// Create a BasicEffectBinding which wraps the XNA BasicEffect.
// An EffectBinding connects an effect with effect parameter values ("effect
// parameter binding"). Some of these parameter values are defined here. Others,
// like World matrices, light parameters, etc. are automatically updated by
// the graphics engine in each frame.
BasicEffectBinding effectBinding = new BasicEffectBinding(graphicsService, null)
{
LightingEnabled = false,
TextureEnabled = true,
VertexColorEnabled = false
};
effectBinding.Set("Texture", texture);
effectBinding.Set("SpecularColor", new Vector3(0, 0, 0));
// Create a material, which is a collection of effect bindings - one effect
// binding for each "render pass". The sky mesh should be rendered in the
// "Sky" render pass. This render pass name is an arbitrary string that is
// used in SampleGraphicsScreen.cs.
Material material = new Material();
material.Add("Sky", effectBinding);
// Assign the material to the submesh.
submesh.SetMaterial(material);
return mesh;
}
/// <summary>
/// Initializes a new instance of the <see cref="TerrainDecalLayer"/> class with a custom
/// material.
/// </summary>
/// <param name="material">The material.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="material"/> is <see langword="null"/>.
/// </exception>
public TerrainDecalLayer(Material material)
{
if (material == null)
throw new ArgumentNullException("material");
// Use a down orientation per default.
Pose = new Pose(Matrix33F.CreateRotationX(-ConstantsF.PiOver2));
Material = material;
UpdateAabb();
}
private MeshNode CreateMeshNode(IEnumerable<Submesh> submeshes, Color color)
{
var mesh = new Mesh();
mesh.Submeshes.AddRange(submeshes);
var material = new Material();
BasicEffectBinding defaultEffectBinding = new BasicEffectBinding(GraphicsService, null)
{
LightingEnabled = true,
TextureEnabled = false,
VertexColorEnabled = false
};
defaultEffectBinding.Set("DiffuseColor", color.ToVector4());
defaultEffectBinding.Set("SpecularColor", new Vector3(1, 1, 1));
defaultEffectBinding.Set("SpecularPower", 100f);
material.Add("Default", defaultEffectBinding);
var triangleMesh = mesh.ToTriangleMesh();
var shape = new TriangleMeshShape(triangleMesh);
var aabb = shape.GetAabb();
mesh.BoundingShape = new TransformedShape(
new GeometricObject(
new BoxShape(aabb.Extent),
new Pose(aabb.Center)));
mesh.Materials.Add(material);
foreach (var submesh in mesh.Submeshes)
submesh.MaterialIndex = 0;
return new MeshNode(mesh);
}
//--------------------------------------------------------------
/// <overloads>
/// <summary>
/// Initializes a new instance of the <see cref="TerrainDecalLayer"/> class.
/// </summary>
/// </overloads>
///
/// <summary>
/// Initializes a new instance of the <see cref="TerrainDecalLayer"/> class with the default
/// material.
/// </summary>
/// <param name="graphicService">The graphic service.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="graphicService"/> is <see langword="null"/>.
/// </exception>
public TerrainDecalLayer(IGraphicsService graphicService)
{
if (graphicService == null)
throw new ArgumentNullException("graphicService");
// Use a down orientation per default.
Pose = new Pose(Matrix33F.CreateRotationX(-ConstantsF.PiOver2));
var effect = graphicService.Content.Load<Effect>("DigitalRune/Terrain/TerrainDecalLayer");
Material = new Material
{
{ "Detail", new EffectBinding(graphicService, effect, null, EffectParameterHint.Material) }
};
FadeOutStart = int.MaxValue;
FadeOutEnd = int.MaxValue;
Width = 1;
Height = 1;
DiffuseColor = new Vector3F(1, 1, 1);
SpecularColor = new Vector3F(1, 1, 1);
SpecularPower = 10;
Alpha = 1;
DiffuseTexture = graphicService.GetDefaultTexture2DWhite();
SpecularTexture = graphicService.GetDefaultTexture2DBlack();
NormalTexture = graphicService.GetDefaultNormalTexture();
HeightTextureScale = 1;
HeightTexture = graphicService.GetDefaultTexture2DBlack();
UpdateAabb();
}
public TerrainTextureSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
_graphicsScreen = new DeferredGraphicsScreen(Services);
_graphicsScreen.DrawReticle = true;
GraphicsService.Screens.Insert(0, _graphicsScreen);
GameObjectService.Objects.Add(new DeferredGraphicsOptionsObject(Services));
Services.Register(typeof(DebugRenderer), null, _graphicsScreen.DebugRenderer);
var scene = _graphicsScreen.Scene;
Services.Register(typeof(IScene), null, 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, 60);
cameraGameObject.ResetPose(new Vector3F(0, 1.8f, 0), 0, 0);
GameObjectService.Objects.Add(cameraGameObject);
_graphicsScreen.ActiveCameraNode = cameraGameObject.CameraNode;
for (int i = 0; i < 10; i++)
GameObjectService.Objects.Add(new DynamicObject(Services, 1));
GameObjectService.Objects.Add(new DynamicSkyObject(Services, true, false, true));
// Create a simple flat terrain.
var terrain = new Terrain();
_terrainTile = new TerrainTile(GraphicsService)
{
OriginX = -100,
OriginZ = -100,
CellSize = 1,
};
terrain.Tiles.Add(_terrainTile);
// Create a flat dummy height texture.
float[] heights = new float[200 * 200];
Texture2D heightTexture = null;
TerrainHelper.CreateHeightTexture(
GraphicsService.GraphicsDevice,
heights,
200,
200,
false,
ref heightTexture);
_terrainTile.HeightTexture = heightTexture;
var shadowMapEffect = ContentManager.Load<Effect>("DigitalRune/Terrain/TerrainShadowMap");
var gBufferEffect = ContentManager.Load<Effect>("DigitalRune/Terrain/TerrainGBuffer");
var materialEffect = ContentManager.Load<Effect>("DigitalRune/Terrain/TerrainMaterial");
var material = new Material
{
{ "ShadowMap", new EffectBinding(GraphicsService, shadowMapEffect, null, EffectParameterHint.Material) },
{ "GBuffer", new EffectBinding(GraphicsService, gBufferEffect, null, EffectParameterHint.Material) },
{ "Material", new EffectBinding(GraphicsService, materialEffect, null, EffectParameterHint.Material) }
};
var terrainNode = new TerrainNode(terrain, material)
{
DetailClipmap =
{
CellsPerLevel = 1364,
NumberOfLevels = 9,
EnableMipMap = true,
},
};
scene.Children.Add(terrainNode);
// Add 3 detail textures layers: gravel, rock, snow.
float detailCellSize = terrainNode.DetailClipmap.CellSizes[0];
var materialGravel = new TerrainMaterialLayer(GraphicsService)
{
DiffuseTexture = ContentManager.Load<Texture2D>("Terrain/Gravel-Diffuse"),
NormalTexture = ContentManager.Load<Texture2D>("Terrain/Gravel-Normal"),
SpecularTexture = ContentManager.Load<Texture2D>("Terrain/Gravel-Specular"),
TileSize = detailCellSize * 512,
BlendRange = 0.1f,
};
_terrainTile.Layers.Add(materialGravel);
var noiseTexture = NoiseHelper.GetNoiseTexture(GraphicsService, 128, 60);
var materialRock = new TerrainMaterialLayer(GraphicsService)
{
DiffuseTexture = ContentManager.Load<Texture2D>("Terrain/Rock-02-Diffuse"),
NormalTexture = ContentManager.Load<Texture2D>("Terrain/Rock-02-Normal"),
SpecularTexture = ContentManager.Load<Texture2D>("Terrain/Rock-02-Specular"),
HeightTexture = ContentManager.Load<Texture2D>("Terrain/Rock-02-Height"),
TileSize = detailCellSize * 1024,
DiffuseColor = new Vector3F(1 / 0.702f),
BlendTexture = noiseTexture,
BlendTextureChannel = 0,
BlendRange = 0.1f,
TerrainHeightBlendRange = 0.1f,
};
_terrainTile.Layers.Add(materialRock);
var materialSnow = new TerrainMaterialLayer(GraphicsService)
{
DiffuseTexture = ContentManager.Load<Texture2D>("Terrain/Snow-Diffuse"),
NormalTexture = ContentManager.Load<Texture2D>("Terrain/Snow-Normal"),
SpecularTexture = ContentManager.Load<Texture2D>("Terrain/Snow-Specular"),
TileSize = detailCellSize * 512,
BlendTexture = noiseTexture,
BlendTextureChannel = 1,
BlendRange = 0.1f,
};
_terrainTile.Layers.Add(materialSnow);
// Create a flat plane for collision detection.
var rigidBody = new RigidBody(new PlaneShape(), new MassFrame(), null)
{
MotionType = MotionType.Static,
};
Simulation.RigidBodies.Add(rigidBody);
CreateGuiControls();
}
//--------------------------------------------------------------
#region Methods
//--------------------------------------------------------------
protected override void OnLoad()
{
// Get common services and game objects.
_graphicsService = _services.GetInstance<IGraphicsService>();
_graphicsScreen = _graphicsService.Screens.OfType<DeferredGraphicsScreen>().First();
var content = _services.GetInstance<ContentManager>();
var scene = _services.GetInstance<IScene>();
_simulation = _services.GetInstance<Simulation>();
var gameObjectService = _services.GetInstance<IGameObjectService>();
_cameraObject = gameObjectService.Objects.OfType<CameraObject>().First();
_previousCameraFar = _cameraObject.CameraNode.Camera.Projection.Far;
// Create a new terrain.
var terrain = new Terrain();
// The terrain is made up of terrain tiles which can be loaded independently.
// Each terrain tile consists of height and normal textures which define the terrain
// geometry and terrain layers which define the material (detail textures).
// In this sample we create 2x2 tiles.
_tiles = new Tile[2, 2];
for (int row = 0; row < 2; row++)
{
for (int column = 0; column < 2; column++)
{
// Create a tile and add it to the terrain.
// (The tile content is loaded later.)
var terrainTile = new TerrainTile(_graphicsService)
{
CellSize = 1, // The terrain has a resolution of 1 height sample per world space unit.
};
terrain.Tiles.Add(terrainTile);
// Create a rigid body with a height field for collision detection and add
// it to the simulation. (The height data is loaded later.)
var heightField = new HeightField
{
Depth = 1,
UseFastCollisionApproximation = false,
};
var rigidBody = new RigidBody(heightField, new MassFrame(), null)
{
MotionType = MotionType.Static,
UserData = terrainTile,
};
_simulation.RigidBodies.Add(rigidBody);
// Store the tile for use later in this sample.
_tiles[row, column] = new Tile
{
TerrainTile = terrainTile,
RigidBody = rigidBody,
};
}
}
// Create a terrain node which represents the terrain in the scene graph.
// The terrain node is rendered by the TerrainRenderer (see DeferredGraphicsScreen).
// The material used to render the terrain is customizable. The material must specify
// the effects for the different render passes which we use in the DeferredGraphicsScreen
// ("ShadowMap", "GBuffer", "Material").
// The prebuilt DigitalRune content contains standard terrain effects. However, you could
// change the effects to change how the material is rendered.
// We can create the material by loading a .drmat file. Or we can create the material in
// code like this:
var shadowMapEffect = content.Load<Effect>("DigitalRune/Terrain/TerrainShadowMap");
var gBufferEffect = content.Load<Effect>("DigitalRune/Terrain/TerrainGBuffer");
var materialEffect = content.Load<Effect>("DigitalRune/Terrain/TerrainMaterial");
var material = new Material
{
{ "ShadowMap", new EffectBinding(_graphicsService, shadowMapEffect, null, EffectParameterHint.Material) },
{ "GBuffer", new EffectBinding(_graphicsService, gBufferEffect, null, EffectParameterHint.Material) },
{ "Material", new EffectBinding(_graphicsService, materialEffect, null, EffectParameterHint.Material) }
};
TerrainNode = new TerrainNode(terrain, material)
{
// The terrain rendering uses clipmaps.
// The clipmaps are updated by the TerrainClipmapRenderer (see DeferredGraphicsScreen)
// when the camera moves.
// The base clipmap contains the basic geometry info (height, normals, hole info).
// It also determines the terrain mesh resolution.
BaseClipmap =
{
CellsPerLevel = 128,
NumberOfLevels = 6
},
// The detail clipmap contains the splatted detail textures (e.g. grass, rock, ...).
// (The max texture size in XNA is 4096x4096. That means we can fit 9 clipmap levels
// into a single texture.)
DetailClipmap =
{
CellsPerLevel = 1365,
NumberOfLevels = 9,
},
};
scene.Children.Add(TerrainNode);
// Load the height and normal maps which define the terrain geometry.
InitializeHeightsAndNormals();
// Set the clipmap cell sizes.
InitializeClipmapCellSizes();
// Create the terrain layers which define the detail textures (e.g. grass, rock, ...)
InitializeTerrainLayers(content);
// Special note for AMD GPUs:
// If we want anisotropic filtering for the terrain, then we need to enable mipmaps for
// AMD GPUs. NVIDIA and Intel can do anisotropic filtering without mipmaps.
//TerrainNode.DetailClipmap.EnableMipMap = true;
CreateGuiControls();
}
public ParallaxMappingSample(Microsoft.Xna.Framework.Game game)
: base(game)
{
SampleFramework.IsMouseVisible = false;
_graphicsScreen = new DeferredGraphicsScreen(Services);
_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));
GameObjectService.Objects.Add(new ObjectCreatorObject(Services));
GameObjectService.Objects.Add(new DynamicSkyObject(Services, false, false, true));
GameObjectService.Objects.Add(new DynamicObject(Services, 1));
GameObjectService.Objects.Add(new DynamicObject(Services, 1));
GameObjectService.Objects.Add(new DynamicObject(Services, 1));
GameObjectService.Objects.Add(new DynamicObject(Services, 2));
GameObjectService.Objects.Add(new DynamicObject(Services, 2));
GameObjectService.Objects.Add(new DynamicObject(Services, 2));
// Add a few palm trees.
Random random = new Random(12345);
for (int i = 0; i < 10; i++)
{
Vector3F position = new Vector3F(random.NextFloat(-3, -8), 0, random.NextFloat(0, -5));
Matrix33F orientation = Matrix33F.CreateRotationY(random.NextFloat(0, ConstantsF.TwoPi));
float scale = random.NextFloat(0.5f, 1.2f);
GameObjectService.Objects.Add(new StaticObject(Services, "PalmTree/palm_tree", scale, new Pose(position, orientation)));
}
// Load ground model which uses normal mapping.
var modelNode = ContentManager.Load<ModelNode>("Parallax/Ground");
_meshNode = modelNode.Children.OfType<MeshNode>().First().Clone();
_meshNode.ScaleLocal = new Vector3F(0.1f);
_meshNode.IsStatic = true;
Debug.Assert(_meshNode.Mesh.Materials.Count == 1, "Mesh should have only one material.");
// Load materials with normal mapping, parallax mapping and parallax occlusion mapping.
_normalMaterial = ContentManager.Load<Material>("Parallax/Normal").Clone();
_parallaxMappingMaterial = ContentManager.Load<Material>("Parallax/PM").Clone();
_parallaxOcclusionMappingMaterial = ContentManager.Load<Material>("Parallax/POM").Clone();
// Get default values from materials.
var parameterBindings = _parallaxOcclusionMappingMaterial["Material"].ParameterBindings;
_heightScale = ((ConstParameterBinding<float>)parameterBindings["HeightScale"]).Value;
_heightBias = ((ConstParameterBinding<float>)parameterBindings["HeightBias"]).Value;
_lodThreshold = ((ConstParameterBinding<int>)parameterBindings["LodThreshold"]).Value;
_maxSamples = ((ConstParameterBinding<int>)parameterBindings["MaxSamples"]).Value;
_shadowStrength = ((ConstParameterBinding<float>)parameterBindings["ShadowStrength"]).Value;
// Start test with POM material.
_currentMaterialIndex = 2;
UpdateMesh();
// Add nodes to scene graph.
_graphicsScreen.Scene.Children.Add(_meshNode);
// Create rigid body for ground plane.
Simulation.RigidBodies.Add(new RigidBody(new PlaneShape(Vector3F.UnitY, 0))
{
MotionType = MotionType.Static,
});
}
//--------------------------------------------------------------
/// <summary>
/// Called when a new <see cref="TerrainTile"/> is created without explicitly specifying a
/// <see cref="Material"/>.
/// </summary>
/// <param name="graphicsService">The graphics service.</param>
/// <returns>The default material.</returns>
/// <remarks>
/// <strong>Notes to Inheritors:</strong>
/// This method may be executed in the constructor of the <see cref="TerrainTile"/> class.
/// Therefore, the <see cref="TerrainTile"/> instance may not be fully initialized when this
/// method is called!
/// </remarks>
protected virtual Material OnCreateMaterial(IGraphicsService graphicsService)
{
if (graphicsService == null)
throw new ArgumentNullException("graphicsService");
object data;
graphicsService.Data.TryGetValue(DefaultMaterialKey, out data);
var material = data as Material;
if (material == null)
{
material = new Material
{
{
"Base",
new EffectBinding(
graphicsService,
graphicsService.Content.Load<Effect>("DigitalRune/Terrain/TerrainGeometryLayer"),
null,
EffectParameterHint.Material)
},
{
"Detail",
new EffectBinding(
graphicsService,
graphicsService.Content.Load<Effect>("DigitalRune/Terrain/TerrainHoleLayer"),
null,
EffectParameterHint.Material)
}
};
graphicsService.Data[DefaultMaterialKey] = material;
}
return material;
}
/// <summary>
/// Initializes a new instance of the <see cref="TerrainTile"/> class with the specified
/// material.
/// </summary>
/// <param name="graphicsService">The graphic service.</param>
/// <param name="material">The material. Can be <see langword="null"/> - see remarks.</param>
/// <remarks>
/// The specified material is used to render the terrain geometry (heights, normals, holes) into
/// the clipmaps. When the <paramref name="material"/> is <see langword="null"/>, no geometry is
/// rendered into the terrain tile.
/// </remarks>
/// <exception cref="ArgumentNullException">
/// <paramref name="graphicsService"/> is <see langword="null"/>.
/// </exception>
public TerrainTile(IGraphicsService graphicsService, Material material)
{
if (graphicsService == null)
throw new ArgumentNullException("graphicsService");
Material = material;
Layers = new TerrainLayerCollection(this);
UpdateAabb();
}
/// <summary>
/// Initializes a new instance of the <see cref="TerrainMaterialLayer"/> class with a custom
/// material.
/// </summary>
/// <param name="material">The material.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="material"/> is <see langword="null"/>.
/// </exception>
public TerrainMaterialLayer(Material material)
{
if (material == null)
throw new ArgumentNullException("material");
Material = material;
}
//--------------------------------------------------------------
/// <overloads>
/// <summary>
/// Initializes a new instance of the <see cref="TerrainMaterialLayer"/> class.
/// </summary>
/// </overloads>
///
/// <summary>
/// Initializes a new instance of the <see cref="TerrainMaterialLayer"/> class with the default
/// material.
/// </summary>
/// <param name="graphicService">The graphic service.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="graphicService"/> is <see langword="null"/>.
/// </exception>
public TerrainMaterialLayer(IGraphicsService graphicService)
{
if (graphicService == null)
throw new ArgumentNullException("graphicService");
var effect = graphicService.Content.Load<Effect>("DigitalRune/Terrain/TerrainMaterialLayer");
Material = new Material
{
{ "Detail", new EffectBinding(graphicService, effect, null, EffectParameterHint.Material) }
};
FadeOutStart = int.MaxValue;
FadeOutEnd = int.MaxValue;
TileSize = 1;
DiffuseColor = new Vector3F(1, 1, 1);
SpecularColor = new Vector3F(1, 1, 1);
SpecularPower = 10;
Alpha = 1;
DiffuseTexture = graphicService.GetDefaultTexture2DWhite();
SpecularTexture = graphicService.GetDefaultTexture2DBlack();
NormalTexture = graphicService.GetDefaultNormalTexture();
HeightTextureScale = 1;
HeightTextureBias = 0;
HeightTexture = graphicService.GetDefaultTexture2DBlack();
TriplanarTightening = -1;
TintStrength = 1;
TintTexture = graphicService.GetDefaultTexture2DWhite();
BlendThreshold = 0.5f;
BlendRange = 1f;
BlendHeightInfluence = 0;
BlendNoiseInfluence = 0;
BlendTextureChannel = 0;
BlendTexture = graphicService.GetDefaultTexture2DWhite();
NoiseTileSize = 1;
TerrainHeightMin = -1e20f;
TerrainHeightMax = +1e20f;
TerrainHeightBlendRange = 1f;
TerrainSlopeMin = -ConstantsF.Pi;
TerrainSlopeMax = ConstantsF.Pi;
TerrainSlopeBlendRange = MathHelper.ToRadians(10);
}