Changes between Version 40 and Version 41 of 3D_Lustre

Timestamp:

Sep 5, 2008, 2:47:09 PM (17 years ago)

Author:

rider

Comment:

--

3D_Lustre

@@ -240 +240 @@
 '''Mesa 3D GL Driver'''
 {{{
-rock@fly:~> git-clone git://anongit.freedesktop.org/git/mesa/mesa
+# Update Mesa-7.0.1 -> Mesa-7.0.4
+rock@fly:~> git-clone git://anongit.freedesktop.org/git/mesa/mesa (The latest Mesa 7.1.0 -> Dependency -> libdrm-2.3.1 higher)
+rock@fly:~> http://downloads.sourceforge.net/mesa3d/MesaLib-7.0.4.tar.gz?modtime=1218883994&big_mirror=0 (Mesa 7.0.4 -> Dependency -> libdrm-2.3.0)
+rock@fly:~> tar zxvf MesaLib-7.0.4.tar.gz
+rock@fly:~> cd ./Mesa-7.0.4/
+rock@fly:~> make linux-dri-x86-64
+rock@fly:~> sudo make install
 }}}
 
 '''DRM Kernel module'''
 {{{
+# Update to the latest libdrm
 rock@fly:~> git-clone git://anongit.freedesktop.org/git/mesa/drm
+rock@fly:~> cd ./drm
+rock@fly:~> ./autogen.sh --prefix=/usr/lib64 --exec-prefix=/
+rock@fly:~> make -j 4
+rock@fly:~> sudo make install
+# libdrm.so will be installed to /usr/lib64
 }}}
 
@@ -647 +659 @@
 [General VNC] --> [Xorg] --> [VGA Card] [[BR]]
 [TurboVNC] --> [VGL] --> [Xorg] --> [GLX/DRI] --> [VGA Card] [[BR]]
+
+=== OpenSUSE Xgl development Q & A ===
+
+Question1: [[BR]]
+Direct rendering does not work when running Xgl, but it does on Xorg. Why are OpenGL applications not accelerated?
+{{{
+Ans:
+Do not intermix hardware acceleration and direct rendering.
+OpenGL applications will be hardware accelerated on Xgl if the driver supports pBuffers or FBOs, like the nvidia and fglrx drivers do.
+Direct rendering on the other hand is impossible to implement at the moment, the necessary extensions for implementing that feature are not even specified yet, let alone being implemented.
+Direct rendering implies hardware acceleration, but not the other way round. 
+Direct rendering is a bit faster than indirect rendering, but indirect rendering is not as bad as it sounds. 
+}}}
+Question2: [[BR]]
+How can I check whether I have direct rendering on Xorg?
+{{{
+Ans:
+Direct rendering is active if running glxinfo|grep direct on top of Xorg (not Xgl!) shows you "Yes". On top of Xgl this will always show you "No". 
+Unfortunately, for Xorg having direct rendering is a synonym for having accelerated graphics, and it is more difficult to detect whether hardware acceleration is available than it is to detect direct rendering. 
+}}}