private ITextureProjectionRenderer FindOrCreateTextureProjectionRenderer(SpotLightGroupParameters groupParamaters)
{
if (groupParamaters.SpotParameters.ProjectionTexture == null)
{
return(null); // If no projection texture is set for this group, it means it doesn't require a texture projection renderer.
}
// Check if a texture projection renderer with the desired properties has already been created:
var textureProjectionRendererKey = new TextureProjectionRendererKey(groupParamaters.SpotParameters);
ITextureProjectionRenderer textureProjectionRenderer = null;
if (textureProjectionRenderers.TryGetValue(textureProjectionRendererKey, out textureProjectionRenderer))
{
// The desired texture projection renderer has already been created. Therefore we will reuse that one.
return(textureProjectionRenderer);
}
// If the desired texture projection renderer is not already present in the dictionary, we create and add it:
textureProjectionRenderer = new LightSpotTextureProjectionRenderer(groupParamaters.SpotParameters);
textureProjectionRenderers.Add(textureProjectionRendererKey, textureProjectionRenderer);
return(textureProjectionRenderer);
}
public bool Equals(ref SpotLightGroupParameters other)
{
return(ShadowType == other.ShadowType && ShadowRenderer == other.ShadowRenderer && SpotParameters.Equals(ref other.SpotParameters));
}