Author: ken
Date: Wed Sep  4 14:25:58 2013
New Revision: 11759

Log:
Mesa : explain some things

Modified:
   trunk/BOOK/x/installing/mesalib.xml

Modified: trunk/BOOK/x/installing/mesalib.xml
==============================================================================
--- trunk/BOOK/x/installing/mesalib.xml Wed Sep  4 12:45:25 2013        (r11758)
+++ trunk/BOOK/x/installing/mesalib.xml Wed Sep  4 14:25:58 2013        (r11759)
@@ -134,9 +134,11 @@
 
     <bridgehead renderas="sect4">Recommended</bridgehead>
     <para role="recommended">
-      <xref linkend="elfutils"/>,
-      <xref linkend="libvdpau"/> (to build VDPAU drivers) and
-      <xref linkend="llvm"/>
+      <xref linkend="elfutils"/> (required for radeon 3d drivers),
+      <xref linkend="libvdpau"/> (to build VDPAU drivers),
+      <xref linkend="llvm"/> (required for radeon 3d drivers and also for
+      llvmpipe which is intended to be the fastest of the three sw rasterizers,
+      see <ulink url="http://www.mesa3d.org/faq.html#part3";></ulink>
     </para>
 
     <bridgehead renderas="sect4">Optional</bridgehead>
@@ -144,16 +146,17 @@
       <ulink url="http://wayland.freedesktop.org/";>Wayland</ulink>
     </para>
 
-    <warning>
+    <note>
       <para>
         The instructions below assume that <application>elfutils</application>
         and <application>LLVM</application> are installed. You will
         need to modify the instructions if you choose not to install them.
         Please note that <application>elfutils</application> and
         <application>LLVM</application> are <emphasis>required</emphasis>
-        for Radeon 3D drivers.
+        for Radeon 3D drivers.  For an explanation of gallium please see
+        <ulink url="https://en.wikipedia.org/wiki/Gallium3D";></ulink>.
       </para>
-    </warning>
+    </note>
 
     <note>
       <para>
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