Review Arena::RenderObjectsPass

[ForNeVeR]

See // TODO[#12]: in the original code, there was a call

Direct3D.d3dd.SetStreamSource(0, Shadow.vertices, 0)

Which seemingly calculated the size of vertex type instance under the covers:

// (decompiled)
if (streamData != null)
  num = streamData.TypeSize;
// ISSUE: cast to a function pointer type
// ISSUE: function pointer call
int resultCode = __calli((__FnPtr<int (int, uint, IDirect3DVertexBuffer9*, uint, uint)>) *(int*) (*(int*) this.m_lpUM + 400))((uint) this.m_lpUM, (uint) streamNumber, lpUm, (uint) offsetInBytes, num);

But now, there's another call:

Direct3D.d3dd.SetStreamSource(0, Shadow.vertices, 0, Shadow.vertices.Description.SizeInBytes);

Is this SizeInBytes size of one vertex item or the whole buffer?