/// <summary>
/// Create high resolution normal map
/// </summary>
/// <param name="heightmapSurface">High resolution height map</param>
/// <param name="normalSurface">Render target surface for outputting the normal map</param>
public void Execute(TerrainHeightmapSurface heightmapSurface, TerrainNormalSurface normalSurface, int nodeLevel)
{
normalSurface.Begin();
normalSurface.Clear();
// disable depth buffer and alpha blending
device.DepthStencilState = DepthStencilState.None;
device.BlendState = BlendState.Opaque;
float normalScale = (float)Math.Pow(2.0, -(Constants.MaxTerrainNodeLevel - nodeLevel));
normalScale *= 1000;
generateNormalEffect.Parameters["NormalScale"].SetValue(normalScale);
generateNormalEffect.Parameters["PatchWidth"].SetValue(heightmapSurface.Width);
generateNormalEffect.Parameters["PatchHeight"].SetValue(heightmapSurface.Height);
generateNormalEffect.Parameters["heightmap"].SetValue(heightmapSurface.Texture);
for (int i = 0; i < generateNormalEffect.CurrentTechnique.Passes.Count; i++)
{
EffectPass pass = generateNormalEffect.CurrentTechnique.Passes[i];
pass.Apply();
device.DrawUserPrimitives(PrimitiveType.TriangleStrip, normalSurface.Vertices, 0, 2, vertexPositionTexture);
}
normalSurface.End();
}
public void Execute(TerrainHeightmapSurface heightmapSurface, TerrainNormalSurface normalmapSurface, TerrainTextureSurface textureSurface, float HeightScale)
{
textureSurface.Begin();
textureSurface.Clear();
//device.VertexDeclaration = vertexPositionTexture;
// disable depth buffer and alpha blending
device.DepthStencilState = DepthStencilState.None;
device.BlendState = BlendState.Opaque;
generateTextureEffect.Parameters["HeightMapTexture"].SetValue(heightmapSurface.Texture);
#if !gradient
generateTextureEffect.Parameters["HeightScale"].SetValue(HeightScale);
generateTextureEffect.Parameters["NormalMapTexture"].SetValue(normalmapSurface.Texture);
generateTextureEffect.Parameters["SlopeMapTexture"].SetValue(slopemapTexture);
generateTextureEffect.Parameters["DiffuseTexture0"].SetValue(textures[0]);
generateTextureEffect.Parameters["DiffuseTexture1"].SetValue(textures[1]);
generateTextureEffect.Parameters["DiffuseTexture2"].SetValue(textures[2]);
generateTextureEffect.Parameters["DiffuseTexture3"].SetValue(textures[3]);
generateTextureEffect.Parameters["DiffuseTexture4"].SetValue(textures[4]);
generateTextureEffect.Parameters["DiffuseTexture5"].SetValue(textures[5]);
generateTextureEffect.Parameters["DiffuseTexture6"].SetValue(textures[6]);
generateTextureEffect.Parameters["DiffuseTexture7"].SetValue(textures[7]);
generateTextureEffect.Parameters["DiffuseTexture8"].SetValue(textures[8]);
generateTextureEffect.Parameters["DiffuseTexture9"].SetValue(textures[9]);
generateTextureEffect.Parameters["DiffuseTextureA"].SetValue(textures[10]);
generateTextureEffect.Parameters["DiffuseTextureB"].SetValue(textures[11]);
#endif
//Vector2 halfPixel = new Vector2(0.5f / heightmapSurface.Width, 0.5f / heightmapSurface.Height);
//generateTextureEffect.Parameters["HalfPixel"].SetValue(halfPixel);
for (int i = 0; i < generateTextureEffect.CurrentTechnique.Passes.Count; i++)
{
EffectPass pass = generateTextureEffect.CurrentTechnique.Passes[i];
pass.Apply();
device.DrawUserPrimitives(PrimitiveType.TriangleStrip, textureSurface.Vertices, 0, 2);
}
textureSurface.End();
}
/// <summary>
/// Construct a terrain node instance from a pre-generated geometry map
/// </summary>
/// <param name="item"></param>
/// <param name="level"></param>
/// <param name="radius"></param>
/// <param name="createTerrainNodeVertexBuffer"></param>
public TerrainNode(TerrainNodeSplitItem item, int level, double radius, CreateTerrainNodeVertexBufferDelegate createTerrainNodeVertexBuffer, bool isSphere)
{
this.bounds = item.Bounds;
this.level = level;
this.radius = radius;
this.createPosition = null;
this.createTerrainNodeVertexBuffer = createTerrainNodeVertexBuffer;
this.isSphere = isSphere;
this.diffuseSurface = item.DiffuseSurface;
this.normalSurface = item.NormalSurface;
Initialize(item);
}
