| Lauri Kasanen | 50da22c | 2011-08-25 23:26:17 +0300 | [diff] [blame^] | 1 | <HTML> |
| 2 | |
| 3 | <TITLE>Gallium Post-processing</TITLE> |
| 4 | |
| 5 | <link rel="stylesheet" type="text/css" href="mesa.css"></head> |
| 6 | |
| 7 | <BODY> |
| 8 | |
| 9 | <H1>Gallium Post-processing</H1> |
| 10 | |
| 11 | <p> |
| 12 | The Gallium drivers support user-defined image post-processing. |
| 13 | At the end of drawing a frame a post-processing filter can be applied to |
| 14 | the rendered image. |
| 15 | Example filters include morphological antialiasing and cell shading. |
| 16 | </p> |
| 17 | |
| 18 | <p> |
| 19 | The filters can be toggled per-app via driconf, or per-session via the |
| 20 | corresponding environment variables. |
| 21 | </p> |
| 22 | |
| 23 | <p> |
| 24 | Multiple filters can be used together. |
| 25 | </p> |
| 26 | |
| 27 | |
| 28 | <H2>PP environment variables</H2> |
| 29 | |
| 30 | <ul> |
| 31 | <li>PP_DEBUG - If defined debug information will be printed to stderr. |
| 32 | </ul> |
| 33 | |
| 34 | <h2>Current filters</h2> |
| 35 | |
| 36 | <ul> |
| 37 | <li>pp_nored, pp_nogreen, pp_noblue - set to 1 to remove the corresponding color channel. |
| 38 | These are basic filters for easy testing of the PP queue. |
| 39 | <li>pp_jimenezmlaa, pp_jimenezmlaa_color - |
| 40 | <a href="http://www.iryokufx.com/mlaa/" target=_blank>Jimenez's MLAA</a> |
| 41 | is a morphological antialiasing filter. |
| 42 | The two versions use depth and color data, respectively. |
| 43 | Which works better depends on the app - depth will not blur text, but it will |
| 44 | miss transparent textures for example. |
| 45 | Set to a number from 2 to 32, roughly corresponding to quality. |
| 46 | Numbers higher than 8 see minimizing gains. |
| 47 | <li>pp_celshade - set to 1 to enable cell shading (a more complex color filter). |
| 48 | </ul> |
| 49 | |
| 50 | |
| 51 | <br> |
| 52 | <br> |
| 53 | |
| 54 | |
| 55 | </BODY> |
| 56 | </HTML> |