/// <summary>
/// Draws all meshes from the render cache between <code>startToken</code> and
/// (but not including) <code>endToken</code>. The render cache contains all meshes
/// rendered in the previous frame.
/// </summary>
public void DrawFromCache(BatchToken startToken, BatchToken endToken)
{
MeshSubset subset = SMeshSubset;
if (!startToken.Equals(endToken))
{
PushState();
for (int i = startToken.BatchID; i <= endToken.BatchID; ++i)
{
var meshBatch = _batchProcessorPrev.GetBatchAt(i);
subset.SetTo(); // resets subset
if (i == startToken.BatchID)
{
subset.VertexId = startToken.VertexID;
subset.IndexId = startToken.IndexID;
subset.NumVertices = meshBatch.NumVertices - subset.VertexId;
subset.NumIndices = meshBatch.NumIndices - subset.IndexId;
}
if (i == endToken.BatchID)
{
subset.NumVertices = endToken.VertexID - subset.VertexId;
subset.NumIndices = endToken.IndexID - subset.IndexId;
}
if (subset.NumVertices != 0)
{
_state.Alpha = 1.0f;
_state.BlendMode = meshBatch.BlendMode;
_batchProcessor.AddMesh(meshBatch, _state, subset, true);
}
}
PopState();
}
}
