Question!

Graphics and GPU Programming Programming

Started by lomateron March 15, 2012 06:27 PM

4 comments, last by lomateron 12 years, 1 month ago

491

Author

March 15, 2012 06:27 PM

Is there any way of changing a vertex buffer, like the position, in the c++ code file(not in the .fx), after being created.

Washu

7,836

March 15, 2012 06:29 PM

Depends on the flags you passed when creating the vertex buffer.

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lomateron

491

Author

March 15, 2012 06:32 PM

Ok, itis D3D10_USAGE_DYNAMIC, now how is the code to change it, the vertex buffer only has one vertice and it only is position, no more that that.

MJP

20,295

March 15, 2012 06:43 PM

Call Map on the ID3D10Buffer, and pass D3D10_MAP_WRITE_DISCARD. You can then use the pointer you get from the ppData parameter to fill in the vertex data. Call Unmap when you're done, and it's ready to use.

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lomateron

491

Author

March 15, 2012 07:06 PM

What?! /(*-*)/
Got this
ID3D10Buffer* g_pVertexBuffer = NULL;
Now pass this as flag in the description? D3D10_MAP_WRITE_DISCARD?
the ppData parameter?What?! Where is that?
Call Unmap?