0,0 → 1,64 |
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<h1>The Mesa 3D Graphics Library</h1> |
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<h1>Gallium Post-processing</h1> |
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The Gallium drivers support user-defined image post-processing. |
At the end of drawing a frame a post-processing filter can be applied to |
the rendered image. |
Example filters include morphological antialiasing and cell shading. |
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The filters can be toggled per-app via driconf, or per-session via the |
corresponding environment variables. |
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Multiple filters can be used together. |
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<h2>PP environment variables</h2> |
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<li>PP_DEBUG - If defined debug information will be printed to stderr. |
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<h2>Current filters</h2> |
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<li>pp_nored, pp_nogreen, pp_noblue - set to 1 to remove the corresponding color channel. |
These are basic filters for easy testing of the PP queue. |
<li>pp_jimenezmlaa, pp_jimenezmlaa_color - |
<a href="http://www.iryokufx.com/mlaa/" target=_blank>Jimenez's MLAA</a> |
is a morphological antialiasing filter. |
The two versions use depth and color data, respectively. |
Which works better depends on the app - depth will not blur text, but it will |
miss transparent textures for example. |
Set to a number from 2 to 32, roughly corresponding to quality. |
Numbers higher than 8 see minimizing gains. |
<li>pp_celshade - set to 1 to enable cell shading (a more complex color filter). |
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