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