public DelegateParameterBinding <T> Set <T>(EffectParameter parameter, Func <DelegateParameterBinding <T>, RenderContext, T> computeParameter)
{
DelegateParameterBinding <T> binding;
int index = ParameterBindings.IndexOf(parameter);
if (index >= 0)
{
// An effect parameter binding already exists.
binding = ParameterBindings[index] as DelegateParameterBinding <T>;
if (binding != null)
{
// Update existing binding.
binding.ComputeParameter = computeParameter;
}
else
{
// Replace existing binding.
binding = new DelegateParameterBinding <T>(Effect, parameter, computeParameter);
ParameterBindings[index] = binding;
}
}
else
{
// Create a new binding.
binding = new DelegateParameterBinding <T>(Effect, parameter, computeParameter);
CheckHint(binding);
ParameterBindings.Add(binding);
}
return(binding);
}
private static Vector4 GetDebug(DelegateParameterBinding <Vector4> binding, RenderContext context)
{
if (binding.Description.Index == 0)
{
return(Debug0);
}
if (binding.Description.Index == 1)
{
return(Debug1);
}
return(new Vector4(0, 0, 0, 0));
}
private static Texture2D GetDetailClipmapTexture(DelegateParameterBinding <Texture2D> binding, RenderContext context)
{
var usage = binding.Description;
int index = (usage != null) ? usage.Index : 0;
var textures = GetTerrainNode(context).DetailClipmap.Textures;
if (index < textures.Length)
{
return(textures[index]);
}
return(null);
}
private static Texture2D GetLightBuffer(DelegateParameterBinding <Texture2D> binding, RenderContext context)
{
if (binding.Description.Index == 0)
{
return(context.LightBuffer0);
}
if (binding.Description.Index == 1)
{
return(context.LightBuffer1);
}
return(null);
}
private static float GetDetailClipmapCellsPerLevel(DelegateParameterBinding <float> binding, RenderContext context)
{
return(GetTerrainNode(context).DetailClipmap.CellsPerLevel);
}
private static float GetBaseClipmapNumberOfLevels(DelegateParameterBinding <float> binding, RenderContext context)
{
return(GetTerrainNode(context).BaseClipmap.NumberOfLevels);
}
private static float GetBaseClipmapCellSize(DelegateParameterBinding <float> binding, RenderContext context)
{
return(GetTerrainNode(context).BaseClipmap.CellSizes[0]);
}
private static float GetPassIndexAsSingle(DelegateParameterBinding <float> binding, RenderContext context)
{
return(Math.Max(context.PassIndex, 0.0f));
}
private static Vector2 GetTerrainOrigin(DelegateParameterBinding <Vector2> binding, RenderContext context)
{
var terrainTile = GetTerrainTile(context);
return(new Vector2(terrainTile.OriginX, terrainTile.OriginZ));
}
private static float GetDetailFadeRange(DelegateParameterBinding <float> binding, RenderContext context)
{
return(GetTerrainNode(context).DetailFadeRange);
}
private static Vector2 GetTerrainSize(DelegateParameterBinding <Vector2> binding, RenderContext context)
{
var terrainTile = GetTerrainTile(context);
return(new Vector2(terrainTile.WidthX, terrainTile.WidthZ));
}
private static Texture2D GetSourceTexture2D(DelegateParameterBinding <Texture2D> binding, RenderContext context)
{
return(context.SourceTexture);
}
//private Vector2 GetRenderTargetSize(DelegateParameterBinding<Vector2> binding, RenderContext context)
//{
// var renderTarget = context.RenderTarget;
// if (renderTarget != null)
// return new Vector2(renderTarget.Width, renderTarget.Height);
// var presentationParameters = context.GraphicsService.GraphicsDevice.PresentationParameters;
// return new Vector2(presentationParameters.BackBufferWidth, presentationParameters.BackBufferHeight);
//}
private static Vector2 GetViewportSize(DelegateParameterBinding <Vector2> binding, RenderContext context)
{
var viewport = context.GraphicsService.GraphicsDevice.Viewport;
return(new Vector2(viewport.Width, viewport.Height));
}
private static float GetElapsedTime(DelegateParameterBinding <float> binding, RenderContext context)
{
return((float)context.DeltaTime.TotalSeconds);
}
private static float GetLastTime(DelegateParameterBinding <float> binding, RenderContext context)
{
return((float)(context.Time - context.DeltaTime).TotalSeconds);
}
private static float GetDetailClipmapNumberOfColumns(DelegateParameterBinding <float> binding, RenderContext context)
{
return(GetTerrainNode(context).DetailClipmap.NumberOfTextureAtlasColumns);
}
private static float GetDetailClipmapLevelBias(DelegateParameterBinding <float> binding, RenderContext context)
{
return(GetTerrainNode(context).DetailClipmap.LevelBias);
}
private static Texture2D GetTerrainHoleTexture(DelegateParameterBinding <Texture2D> binding, RenderContext context)
{
return(GetTerrainTile(context).HoleTexture ?? context.GraphicsService.GetDefaultTexture2DWhite());
}
private static float GetDetailEnableAnisotropicFiltering(DelegateParameterBinding <float> binding, RenderContext context)
{
return(GetTerrainNode(context).DetailClipmap.EnableAnisotropicFiltering ? 1 : 0);
}
private static Vector2 GetTerrainHoleTextureSize(DelegateParameterBinding <Vector2> binding, RenderContext context)
{
var texture = GetTerrainHoleTexture(null, context);
return(new Vector2(texture.Width, texture.Height));
}
private static float GetHoleThreshold(DelegateParameterBinding <float> binding, RenderContext context)
{
return(GetTerrainNode(context).HoleThreshold);
}
private static int GetPassIndexAsInt32(DelegateParameterBinding <int> binding, RenderContext context)
{
return(Math.Max(context.PassIndex, 0));
}