Differences

This shows you the differences between two versions of the page.

--- mitsuba [2015/06/21 00:17]
slackermedia
+++ mitsuba [2021/06/03 19:48] (current)
@@ Line 1: / Line 1: @@
-[[{arrowp.png|border:0;background:none;width:0;display:inline-block;position:absolute;top:0;left:0;}luxrender|]]
-[[{arrown.png|border:0;background:none;width:0;display:inline-block;position:absolute;top:0;margin-left:2.5em;}mixxx|]]
 ====== Mitsuba ======
@@ Line 7: / Line 5: @@
 [[http://www.mitsuba-renderer.org|Mitsuba]] is a GPLv3 research-oriented rendering system in the style of physically-based rendering technology. It is written in C++, implements unbiased as well as biased techniques,  and contains heavy optimizations targeted towards current CPU architectures.
-It is experimental by its own mission statement, so it may not be a rendering engine you want to use exclusively, but its code has been used as a basis for some very important engines, and the render results speak for themselves.
+It is experimental by its own mission statement, so it is not a rendering engine for everyday use without testing, but its code has been used as a basis for some very important engines, and the render results speak for themselves.
 <WRAP notice prewrap 50%>
@@ Line 18: / Line 15: @@
 <WRAP indent>
-Mitsuba has not only all the usual features of modern render engines, but it maintains a lead ahead of others due to its commitment to experimentation.
+Mitsuba has not only all the usual features of modern render engines, but it maintains a lead ahead of others due to its commitment to experimentation. It features important advances in ambient occlusion, direct illumination, photon mapping, particle tracing, instant radiosity, and much more.
 </WRAP>
@@ Line 40: / Line 37: @@
 ===== Install =====
-Installing Luxrender broadly requires, like other renderers, the installation of the Luxrender base package, and then the plugin that will make it useful in your application of choice (probably [[blender]]).
+Installing Mitsuba broadly requires, like other renderers, the installation of the Mitsuba base package, and then the plugin that will make it useful in your application of choice (probably [[blender]]).
-To get the basic Luxrender package installed, first install its dependencies; all of them are available from [[http://slackbuilds.org]] but some (like OpenCL) are optional.
+To get the basic Mitsuba package installed, first install its dependencies; all of them are available from [[http://slackbuilds.org]].
-Once the dependencies are installed, install Luxrender from [[http://slackbuilds.org]].
+Once the dependencies are installed, install Mitsuba from [[http://slackbuilds.org]].
-==== OpenCL ====
+==== OpenGL (libGLEW) ====
+Mitsuba requires ''libglewmx''. While Slackware ships with ''GLEW'', it has not been compiled to include ''libglewmx'' (Slackermedia sent a patch to Slackware, so ''libglewmx'' will be included in the next version), so you will have to re-compile and re-install it manually.
-To compile and install LuxRender without OpenCL support:
+To do this, get the ''glew'' SlackBuild from your install disc (it is in the ''x'' series) or download it from your nearest Slackware mirror (for example, [[ftp://ftp.osuosl.org/pub/slackware/slackware-14.1/source/x]]). Download the ''glew'' source code.
+Change the ''make'' line in the SlackBuild to:
 <code>
-$ OPENCL=no ./luxrender.SlackBuild
+make install.all GLEW_DEST=$PKG/usr
 </code>
-or
+Remove the old version of ''glew'' and install the new version with ''upgradepkg'':
 <code>
-$ OPENCL=no sport i luxrender
+# upgradepkg --install-new \
+--reinstall /tmp/glew*tgz
 </code>
-If you do not know what OpenCL is, you probably do not need it. If you do know what it is and want to use it, then you must follow the instructions in the OpenCL SlackBuild to ensure that OpenCL is enabled on your system.
+<WRAP alert>
+Install only the //same version// of ''glew'' as the version that Slackware ships with. If you impulsively decide to upgrade to later GLEW code, then other packages using ''libglew'' could break, since they have been built to look for a specific version and, after your new install, they will not be able to find them.
+\\
+Sometimes repairing a missing library is as easy as lying to your system:
+\\
+<code>
+ln -s /usr/lib64/libGLEW.so.1.12 /usr/lib64/libGLEW.so.1.9
+</code>
+\\
+This often fixes the problem, but theoretically it can cause less obvious problems in the application wanting the older version of the library, especially if something important has changed between the old version and the new version, so it's best to avoid situations like this.
+</WRAP>
-The LuxRender package
+Confirm that ''libglewmx'' support has been built. If nothing is returned, then ''glewmx'' is still missing. Otherwise, the install was a success:
+<code>
+$ grep glewmx /var/log/packages/glew-X.Y.Z-x86_64
+usr/lib64/pkgconfig/glewmx.pc
+</code>
+Once all dependencies and the ''glew'' patch has been made, install Mitsuba.
+==== Blender ====
+If you intend to use Mitsuba with Blender, install the Mitsuba-blender package from SlackBuilds.org
 ===== Usage =====
-LuxRender has several entry points. It can be launched as a shell application:
+Mitsuba has several entry points. It can be launched as a shell application:
 <code>
-$ luxconsole /path/to/file.lxs
+$ mitsuba /path/to/file.xml -o render.exr
 </code>
@@ Line 76: / Line 98: @@
 <code>
-$ luxrender&
+$ mtsgui&
 </code>
-{{ luxrender.jpg?666 }}
+{{ mtsgui.jpg?666 }}
 And finally, the Blender plugin, which can be activated and used the same as any other Blender plugin:
@@ Line 86: / Line 108: @@
   - Make it your active renderer in the *Info* panel
-{{ luxblend.jpg }}
+[{{ mtsblend.jpg | Use an alternate render engine for Blender. }}]
 <WRAP tip>
 **See Also** \\
-blender \\
+[[blender|Blender]] \\
-mitsuba \\
+[[http://povray.org|Povray]] \\
-povray
+[[yafaray|Yafaray]] \\
+[[luxrender|Luxrender]]
 </WRAP>
+<WRAP centeralign>
-[[{arrown.png|border:0;background:none;width:0;display:inline-block;float:right;}mixxx|]][[{arrowp.png|border:0;background:none;width:0;float:right;}luxrender|]]
+<wrap fa>[[milkytracker|R]]</wrap> <wrap fa>[[start|S]]</wrap> <wrap fa>[[mixxx|Q]]</wrap>
+</WRAP>