Mesa (master): docs: Add a page on post-processing

Brian Paul brianp at kemper.freedesktop.org
Fri Aug 26 13:06:05 PDT 2011


Module: Mesa
Branch: master
Commit: 50da22ceb16a7398612a8b5b7036ef2e0b635eef
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=50da22ceb16a7398612a8b5b7036ef2e0b635eef

Author: Lauri Kasanen <cand at gmx.com>
Date:   Thu Aug 25 23:26:17 2011 +0300

docs: Add a page on post-processing

With edits by Brian.

Signed-off-by: Lauri Kasanen <cand at gmx.com>
Signed-off-by: Brian Paul <brianp at vmware.com>

---

 docs/contents.html    |    1 +
 docs/postprocess.html |   56 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+), 0 deletions(-)

diff --git a/docs/contents.html b/docs/contents.html
index 8fc2ac0..46e458e 100644
--- a/docs/contents.html
+++ b/docs/contents.html
@@ -63,6 +63,7 @@ a:visited {
 <LI><A HREF="extensions.html" target="MainFrame">Mesa Extensions</A>
 <LI><A HREF="mangling.html" target="MainFrame">Function Name Mangling</A>
 <LI><A href="llvmpipe.html" target="MainFrame">Gallium llvmpipe driver</A>
+<LI><A href="postprocess.html" target="MainFrame">Gallium post-processing</A>
 </ul>
 
 <b>Developer Topics</b>
diff --git a/docs/postprocess.html b/docs/postprocess.html
new file mode 100644
index 0000000..2a37969
--- /dev/null
+++ b/docs/postprocess.html
@@ -0,0 +1,56 @@
+<HTML>
+
+<TITLE>Gallium Post-processing</TITLE>
+
+<link rel="stylesheet" type="text/css" href="mesa.css"></head>
+
+<BODY>
+
+<H1>Gallium Post-processing</H1>
+
+<p>
+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.
+</p>
+
+<p>
+The filters can be toggled per-app via driconf, or per-session via the
+corresponding environment variables.
+</p>
+
+<p>
+Multiple filters can be used together.
+</p>
+
+
+<H2>PP environment variables</H2>
+
+<ul>
+<li>PP_DEBUG - If defined debug information will be printed to stderr.
+</ul>
+
+<h2>Current filters</h2>
+
+<ul>
+<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).
+</ul>
+
+
+<br>
+<br>
+
+
+</BODY>
+</HTML>



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