private RawList <T> GetVertexList <T>() where T : struct, IVertexData
{
// Fast path: Retrieve and return
int typeIndex = VertexDeclaration.Get <T>().TypeIndex;
RawList <T> vertexList = null;
if (typeIndex < this.vertexDataSlots.Length && (vertexList = this.vertexDataSlots[typeIndex].Vertices as RawList <T>) != null)
{
return(vertexList);
}
// Slow / init path
else
{
// Allocate slot for vertex type
if (typeIndex >= this.vertexDataSlots.Length)
{
Array.Resize(ref this.vertexDataSlots, typeIndex + 1);
}
this.usedSlotCount = Math.Max(this.usedSlotCount, typeIndex + 1);
// Init batch storage for vertex type
if (this.vertexDataSlots[typeIndex].Batches == null)
{
this.vertexDataSlots[typeIndex].Batches = new List <IVertexBatch>();
this.vertexDataSlots[typeIndex].Batches.Add(new VertexBatch <T>());
}
// Assign current vertex batch for fast access
VertexBatch <T> batch = (VertexBatch <T>) this.vertexDataSlots[typeIndex].Batches[0];
this.vertexDataSlots[typeIndex].Vertices = batch.Vertices;
this.vertexDataSlots[typeIndex].ActiveBatchCount = 1;
return(batch.Vertices);
}
}
private RawList <T> AdvanceToNextBatch <T>() where T : struct, IVertexData
{
int typeIndex = VertexDeclaration.Get <T>().TypeIndex;
int batchIndex = this.vertexDataSlots[typeIndex].ActiveBatchCount;
List <IVertexBatch> batchList = this.vertexDataSlots[typeIndex].Batches;
// Create a new batch, if we didn't already have one ready
if (batchList.Count <= batchIndex)
{
batchList.Add(new VertexBatch <T>());
}
// Assign current vertex batch for fast access
VertexBatch <T> batch = (VertexBatch <T>)batchList[batchIndex];
this.vertexDataSlots[typeIndex].Vertices = batch.Vertices;
this.vertexDataSlots[typeIndex].ActiveBatchCount++;
return(batch.Vertices);
}
private RawList <T> GetVertexList <T>() where T : struct, IVertexData
{
// Fast path: Retrieve and return
int typeIndex = VertexDeclaration.Get <T>().TypeIndex;
RawList <T> vertexList = null;
if (typeIndex < this.vertices.Length && (vertexList = this.vertices[typeIndex] as RawList <T>) != null)
{
return(vertexList);
}
// Slow / init path
else
{
if (typeIndex >= this.vertices.Length)
{
Array.Resize(ref this.batches, typeIndex + 1);
Array.Resize(ref this.vertices, typeIndex + 1);
}
VertexBatch <T> batch = new VertexBatch <T>();
this.batches[typeIndex] = batch;
this.vertices[typeIndex] = batch.Vertices;
return(batch.Vertices);
}
}
