Use Depth buffer as texture

Graphics and GPU Programming Programming

Started by 8up tuotlo February 27, 2014 02:06 PM

1 comment, last by Hodgman 10 years, 1 month ago

8up tuotlo

123

Author

February 27, 2014 02:06 PM

Is it possible to set depth buffer as the texture to effect (LPDIRECT3DEFFECT9) in direct3d?

thanks.

21st Century Moose

13,459

February 27, 2014 05:26 PM

Yes, no, and it depends on why you want to do it.

If for shadow mapping, then it can be done (on certain hardware), but you need to create a new texture with a depth/stencil format, get surface level 0 on it, set that as your depth/stencil surface and draw into it. All summarized here: http://aras-p.info/texts/D3D9GPUHacks.html#shadowmap

Direct3D has need of instancing, but we do not. We have plenty of glVertexAttrib calls.

Hodgman

52,717

February 27, 2014 09:51 PM

The INTZ method on the same page works for general purpose usage (e.g. Deferred rendering, post processing), but requires the user to have a D3D10-capable GPU (or very late D3D9-era)

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