Hi, guys, I know it's easy to copy vertex/index buffer in D3D10 with IDirect3D10::CopyResource(...) interface.
How to do the same work in D3D9? Is there any similar API for this?
+1
A:
Just lock the vertex/index buffers and memcpy the data from one to the other.
Goz
2010-04-12 08:49:22
I want to avoid Lock method, since Lock will create memory buffer internally, and it could be out of memory.I wish I could reserved a buffer at beginning, and copy the target buffer to reserved buffer when mapping.
Buzz
2010-04-12 09:24:45
There is no other way to do it under DX9. If you want to avoid running out of memory remember that you can lock a buffer a bit at a time so you can keep memory usage manageable.
Goz
2010-04-12 09:45:43
I was under the impression that locking a dynamic buffer essentially mapped the existing memory for that buffer into your process, so locking a buffer doesn't actually use any additional memory as such.
John Burton
2010-04-12 13:33:09
@JB: That "may" be how its implemented. There are no guarantees though ...
Goz
2010-04-12 16:04:52
Ok thanks that makes sense
John Burton
2010-04-13 10:32:24