} // ModelRendererFrustumCulling
/// <summary>
/// This is task that's is performed over the threads.
/// </summary>
private static void ModelRendererFrustumCullingTask(FrustumCullingParameters parameters)
{
BoundingFrustum boundingFrustum = parameters.boundingFrustum;
List <ModelRenderer> modelsToRender = parameters.modelsToRender;
int startPosition = parameters.startPosition;
int count = parameters.count;
FastBoundingFrustum fastBoundingFrustum = new FastBoundingFrustum(boundingFrustum);
// I improved memory locality with FrustumCullingDataPool.
// However, in order to do that I had to make the code a little more complicated and error prone.
// There is a performance gain, but it is small.
// I recommend to perform this kind of optimizations is the game/application has a CPU bottleneck.
// Besides, the old code was half data oriented.
for (int i = startPosition; i < (count + startPosition); i++)
{
ModelRenderer.FrustumCullingData frustumCullingData = ModelRenderer.FrustumCullingDataPool.Elements[i];
if (frustumCullingData.model != null && // Not need to waste cycles in this, how many ModelRenderer components will not have a model?
// Is Visible?
Layer.IsVisible(frustumCullingData.layerMask) && frustumCullingData.ownerActive && frustumCullingData.enabled)
{
if (fastBoundingFrustum.Intersects(ref frustumCullingData.boundingSphere))
{
modelsToRender.Add(frustumCullingData.component);
}
}
}
} // ModelRendererFrustumCullingTask
} // PointLightFrustumCulling
/// <summary>
/// Frustum Culling.
/// </summary>
/// <param name="boundingFrustum">Bounding Frustum.</param>
/// <param name="spotLightsToRender">The result.</param>
public static void SpotLightFrustumCulling(BoundingFrustum boundingFrustum, List <SpotLight> spotLightsToRender)
{
FastBoundingFrustum fastBoundingFrustum = new FastBoundingFrustum(boundingFrustum);
for (int i = 0; i < SpotLight.ComponentPool.Count; i++)
{
SpotLight component = SpotLight.ComponentPool.Elements[i];
if (component.Intensity > 0 && component.IsVisible)
{
BoundingSphere boundingSphere = new BoundingSphere(component.cachedPosition, component.Range);
if (fastBoundingFrustum.Intersects(ref boundingSphere))
{
//if (boundingFrustum.Intersects(frustumCullingData.boundingSphere)) // It is not thread safe and is slow as hell.
spotLightsToRender.Add(component);
}
}
}
} // FrustumCulling
