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authorBrian Paul <brian.paul@tungstengraphics.com>2003-12-31 20:59:51 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2003-12-31 20:59:51 +0000
commitfc528e27c6cf51cca758aa481fd3b8e3aa3f338a (patch)
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parent1fdfd54ba246cbcc4f2569ff496daf06fde832ee (diff)
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added info about S3TC texture compression
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@@ -7,7 +7,7 @@
<center>
<h1>Mesa Frequently Asked Questions</h1>
-Last updated: 26 November 2003
+Last updated: 31 December 2003
</center>
<br>
@@ -203,8 +203,8 @@ package and unpack it before compiling Mesa.
<h2><a name="part2">2.6 What's the proper place for the libraries and headers?</a></h2>
<p>
<a name="part2">On Linux-based systems you'll want to follow the
-</a><a href="http://oss.sgi.com/projects/ogl-sample/ABI/index.html">Linux ABI</a>
-standard.
+</a><a href="http://oss.sgi.com/projects/ogl-sample/ABI/index.html"
+target="_parent">Linux ABI</a> standard.
Basically you'll want the following:
</p>
<ul>
@@ -260,7 +260,7 @@ hardware it has detected.
</a></p>
<p>
<a name="part3">If your DRI-based driver isn't working, go to the
-</a><a href="http://dri.sf.net/">DRI website</a> for trouble-shooting information.
+</a><a href="http://dri.sf.net/" target="_parent">DRI website</a> for trouble-shooting information.
</p>
@@ -268,7 +268,8 @@ hardware it has detected.
<p>
Make sure the ratio of the far to near clipping planes isn't too great.
Look
-<a href="http://www.sgi.com/software/opengl/advanced97/notes/node18.html">
+<a href="http://www.sgi.com/software/opengl/advanced97/notes/node18.html"
+target="_parent">
here</a> for details.
</p>
<p>
@@ -324,7 +325,7 @@ will fix the problem.
is discussed.
</a></p>
<p>
-<a name="part4">The </a><a href="http://www.opengl.org/developers/documentation/specs.html">
+<a name="part4">The </a><a href="http://www.opengl.org/developers/documentation/specs.html" target="_parent">
OpenGL Specification</a> is the bible for OpenGL implemention work.
You should read it.
</p>
@@ -356,5 +357,22 @@ the archives) is a good way to get information.
</p>
+<h2>4.3 Why isn't GL_EXT_texture_compression_s3tc implemented in Mesa and/or the DRI drivers?</h2>
+<p>
+The <a href="http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt" target="_parent">specification for the extension</a>
+indicates that there are intellectual property (IP) and/or patent issues
+to be dealt with.
+</p>
+<p>We've been unsucessful in getting a response from S3 (or whoever owns
+the IP nowadays) to indicate whether or not an open source project can
+implement the extension (specifically the compression/decompression
+algorithms).
+</p>
+<p>
+Until we can get official permission to do so, this extension will not
+be implemented in Mesa.
+</p>
+
+
</body>
</html>