| Andreas Boll | ecd5c7c | 2012-06-12 09:05:03 +0200 | [diff] [blame] | 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
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| 3 | <head> |
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| 5 | <title>Gallium Post-processing</title> |
| 6 | <link rel="stylesheet" type="text/css" href="mesa.css"> |
| 7 | </head> |
| 8 | <body> |
| Lauri Kasanen | 50da22c | 2011-08-25 23:26:17 +0300 | [diff] [blame] | 9 | |
| Andreas Boll | ecd5c7c | 2012-06-12 09:05:03 +0200 | [diff] [blame] | 10 | <h1>Gallium Post-processing</h1> |
| Lauri Kasanen | 50da22c | 2011-08-25 23:26:17 +0300 | [diff] [blame] | 11 | |
| 12 | <p> |
| 13 | The Gallium drivers support user-defined image post-processing. |
| 14 | At the end of drawing a frame a post-processing filter can be applied to |
| 15 | the rendered image. |
| 16 | Example filters include morphological antialiasing and cell shading. |
| 17 | </p> |
| 18 | |
| 19 | <p> |
| 20 | The filters can be toggled per-app via driconf, or per-session via the |
| 21 | corresponding environment variables. |
| 22 | </p> |
| 23 | |
| 24 | <p> |
| 25 | Multiple filters can be used together. |
| 26 | </p> |
| 27 | |
| 28 | |
| Andreas Boll | 210a27d | 2012-06-12 09:05:36 +0200 | [diff] [blame^] | 29 | <h2>PP environment variables</h2> |
| Lauri Kasanen | 50da22c | 2011-08-25 23:26:17 +0300 | [diff] [blame] | 30 | |
| 31 | <ul> |
| 32 | <li>PP_DEBUG - If defined debug information will be printed to stderr. |
| 33 | </ul> |
| 34 | |
| 35 | <h2>Current filters</h2> |
| 36 | |
| 37 | <ul> |
| 38 | <li>pp_nored, pp_nogreen, pp_noblue - set to 1 to remove the corresponding color channel. |
| 39 | These are basic filters for easy testing of the PP queue. |
| 40 | <li>pp_jimenezmlaa, pp_jimenezmlaa_color - |
| 41 | <a href="http://www.iryokufx.com/mlaa/" target=_blank>Jimenez's MLAA</a> |
| 42 | is a morphological antialiasing filter. |
| 43 | The two versions use depth and color data, respectively. |
| 44 | Which works better depends on the app - depth will not blur text, but it will |
| 45 | miss transparent textures for example. |
| 46 | Set to a number from 2 to 32, roughly corresponding to quality. |
| 47 | Numbers higher than 8 see minimizing gains. |
| 48 | <li>pp_celshade - set to 1 to enable cell shading (a more complex color filter). |
| 49 | </ul> |
| 50 | |
| 51 | |
| 52 | <br> |
| 53 | <br> |
| 54 | |
| 55 | |
| Andreas Boll | ecd5c7c | 2012-06-12 09:05:03 +0200 | [diff] [blame] | 56 | </body> |
| 57 | </html> |