Limegarden.net » multithreading http://limegarden.net Personal site of Wouter Lindenhof Wed, 01 Feb 2012 23:07:09 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Multi Threaded Direct3D http://limegarden.net/2009/01/29/multi-threaded-direct3d/ http://limegarden.net/2009/01/29/multi-threaded-direct3d/#comments Thu, 29 Jan 2009 02:18:24 +0000 Wouter Lindenhof http://limegarden.net/2009/01/29/multi-threaded-direct3d/ In the previous post I mentioned that I would look in to multi threaded rendering and I have done that. The minimal example attached and available for download is really simple sample, that creates a Direct3D device and cleans it.

If you would further apply the trick that is described on the 26 slide of Optimizing Direct X On Multi Core Architectures then I'm certain you can create something very flexible.

For example: If you need a vertex buffer, you lock the RenderingThread using [cci_cpp]RenderingThread::Lock[/cci_cpp] which will only be released once the [cci_cpp]CRITICAL_SECTION[/cci_cpp] has been released by another thread. Then you could ask the RenderingThread to create a wrapper of [cci_cpp]IDirect3DVertexBuffer9[/cci_cpp] which has added function that it will buffer everything and only update [cci_cpp]IDirect3DVertexBuffer9[/cci_cpp] inside the RenderingThread. If done correct you can easily multithread without having to worry about the following error message:

[ccWN_text]Direct3D9: (WARN) :D evice that was created without D3DCREATE_MULTITHREADED is being used by a thread other than the creation thread.[/ccWN_text]

You can download the source code here: DirectXMultiThreaded.zip (source only)

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