private void PushDataImpl(CommandBufferScoped cbs, BufferHolder dst, int dstOffset, ReadOnlySpan <byte> data)
{
var srcBuffer = _buffer.GetBuffer();
var dstBuffer = dst.GetBuffer();
int offset = _freeOffset;
int capacity = BufferSize - offset;
if (capacity < data.Length)
{
_buffer.SetDataUnchecked(offset, data.Slice(0, capacity));
_buffer.SetDataUnchecked(0, data.Slice(capacity));
BufferHolder.Copy(_gd, cbs, srcBuffer, dstBuffer, offset, dstOffset, capacity);
BufferHolder.Copy(_gd, cbs, srcBuffer, dstBuffer, 0, dstOffset + capacity, data.Length - capacity);
}
else
{
_buffer.SetDataUnchecked(offset, data);
BufferHolder.Copy(_gd, cbs, srcBuffer, dstBuffer, offset, dstOffset, data.Length);
}
_freeOffset = (offset + data.Length) & (BufferSize - 1);
_freeSize -= data.Length;
Debug.Assert(_freeSize >= 0);
_pendingCopies.Enqueue(new PendingCopy(cbs.GetFence(), data.Length));
}
public unsafe bool TryPushData(CommandBufferScoped cbs, Action endRenderPass, BufferHolder dst, int dstOffset, ReadOnlySpan <byte> data)
{
if (data.Length > BufferSize)
{
return(false);
}
if (_freeSize < data.Length)
{
FreeCompleted();
if (_freeSize < data.Length)
{
return(false);
}
}
endRenderPass();
var srcBuffer = _buffer.GetBuffer();
var dstBuffer = dst.GetBuffer();
int offset = _freeOffset;
int capacity = BufferSize - offset;
if (capacity < data.Length)
{
_buffer.SetDataUnchecked(offset, data.Slice(0, capacity));
_buffer.SetDataUnchecked(0, data.Slice(capacity));
BufferHolder.Copy(_gd, cbs, srcBuffer, dstBuffer, offset, dstOffset, capacity);
BufferHolder.Copy(_gd, cbs, srcBuffer, dstBuffer, 0, dstOffset + capacity, data.Length - capacity);
}
else
{
_buffer.SetDataUnchecked(offset, data);
BufferHolder.Copy(_gd, cbs, srcBuffer, dstBuffer, offset, dstOffset, data.Length);
}
_freeOffset = (offset + data.Length) & (BufferSize - 1);
_freeSize -= data.Length;
Debug.Assert(_freeSize >= 0);
_pendingCopies.Enqueue(new PendingCopy(cbs.GetFence(), data.Length));
return(true);
}