public static RenderScene Merge(IEnumerable <RenderScene> scenes)
{
if (scenes == null)
{
return(Empty);
}
var count = scenes.Sum(s => s?.Count ?? 0);
if (count <= 0)
{
return(Empty);
}
var collection = new RenderObjectCollection(count);
var index = 0;
foreach (var scene in scenes)
{
if (scene == null)
{
continue;
}
scene.CopyTo(collection, index);
index += scene.Count;
}
return(collection);
}
public VisibilityGroup(RenderSystem renderSystem)
{
RenderSystem = renderSystem;
RenderObjects = new RenderObjectCollection(this);
RenderData.Initialize(ComputeDataArrayExpectedSize);
// Create RenderStageMask key, and keep track of number of RenderStages.Count for future resizing
RenderStageMaskKey = RenderData.CreateStaticObjectKey<uint>(null, stageMaskMultiplier = (RenderSystem.RenderStages.Count + RenderStageMaskSizePerEntry - 1) / RenderStageMaskSizePerEntry);
Array.Resize(ref viewRenderStageMask, stageMaskMultiplier);
RenderSystem.RenderStages.CollectionChanged += RenderStages_CollectionChanged;
RenderSystem.RenderStageSelectorsChanged += RenderSystem_RenderStageSelectorsChanged;
RenderSystem.RenderFeatures.CollectionChanged += RenderFeatures_CollectionChanged;
}
public static RenderScene Merge(RenderScene a, RenderScene b)
{
if (a == null && b == null)
{
return(RenderScene.Empty);
}
if (a == null || a.Count <= 0)
{
return(b);
}
if (b == null || b.Count <= 0)
{
return(a);
}
var collection = new RenderObjectCollection(a.Count + b.Count);
a.CopyTo(collection, 0);
b.CopyTo(collection, a.Count);
return(collection);
}
