Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  1. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  2. <html lang="en">
  3. <head>
  4.   <meta http-equiv="content-type" content="text/html; charset=utf-8">
  5.   <title>Gallium Post-processing</title>
  6.   <link rel="stylesheet" type="text/css" href="mesa.css">
  7. </head>
  8. <body>
  9.  
  10. <div class="header">
  11.   <h1>The Mesa 3D Graphics Library</h1>
  12. </div>
  13.  
  14. <iframe src="contents.html"></iframe>
  15. <div class="content">
  16.  
  17. <h1>Gallium Post-processing</h1>
  18.  
  19. <p>
  20. The Gallium drivers support user-defined image post-processing.
  21. At the end of drawing a frame a post-processing filter can be applied to
  22. the rendered image.
  23. Example filters include morphological antialiasing and cell shading.
  24. </p>
  25.  
  26. <p>
  27. The filters can be toggled per-app via driconf, or per-session via the
  28. corresponding environment variables.
  29. </p>
  30.  
  31. <p>
  32. Multiple filters can be used together.
  33. </p>
  34.  
  35.  
  36. <h2>PP environment variables</h2>
  37.  
  38. <ul>
  39. <li>PP_DEBUG - If defined debug information will be printed to stderr.
  40. </ul>
  41.  
  42. <h2>Current filters</h2>
  43.  
  44. <ul>
  45. <li>pp_nored, pp_nogreen, pp_noblue - set to 1 to remove the corresponding color channel.
  46. These are basic filters for easy testing of the PP queue.
  47. <li>pp_jimenezmlaa, pp_jimenezmlaa_color -
  48. <a href="http://www.iryokufx.com/mlaa/" target=_blank>Jimenez's MLAA</a>
  49. is a morphological antialiasing filter.
  50. The two versions use depth and color data, respectively.
  51. Which works better depends on the app - depth will not blur text, but it will
  52. miss transparent textures for example.
  53. Set to a number from 2 to 32, roughly corresponding to quality.
  54. Numbers higher than 8 see minimizing gains.
  55. <li>pp_celshade - set to 1 to enable cell shading (a more complex color filter).
  56. </ul>
  57.  
  58.  
  59. <br>
  60. <br>
  61.  
  62. </div>
  63. </body>
  64. </html>
  65.