Differences

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--- luxrender [2015/06/20 06:52]
slackermedia
+++ luxrender [2021/06/03 19:48] (current)
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+====== LuxRender ======
+LuxRender is a physically based and unbiased rendering engine. Based on state of the art algorithms, LuxRender simulates the flow of light according to physical equations, which gives it the ability to produce realistic images of photographic quality. It can be used as a stand-alone renderer, a networked renderer, and a Blender render engine.
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 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.
-Once the dependencies are installed, install Luxrender from [[http://slackbuilds.org]]. This also installs the Blender package.
+Once the dependencies are installed, install Luxrender from [[http://slackbuilds.org]].
+==== OpenCL ====
+OpenCL is an open specification that enables a system to access and recruit any computing device for the computational workload. In practise, that usually means the graphics card (GPU) but in theory it could include more.
+OpenCL increases the render speed substantially, but it does require sufficiently powered hardware, and for LuxRender to utilise OpenCL, you must [[opencl|enable OpenCL]] on your system.
+The default behaviour of the SlackBuild is to install LuxRender with OpenCL support. To disable it, start the SlackBuild with a leading ''OPENCL=no'' variable setting:
+<code>
+$ OPENCL=no ./luxrender.SlackBuild
+</code>
+or, if you use ''sport'':
+<code>
+$ OPENCL=no sport i luxrender
+</code>
+If you do not know what OpenCL is, you probably do not //need// it.
+==== Blender ====
+The default behaviour of the LuxRender SlackBuild is to auto-detect whether you have Blender installed, and where its ''script'' directory is located, and to install the LuxRender Blender plug-in. You can forego this automatic detection process by just providing the path manually:
+<code>
+$ BLENDER=/path/to/blender/scripts ./luxrender.SlackBuild
+</code>
+Or, if you would rather the Blender plug-in not be installed, set it to ''no'':
+<code>
+$ BLENDER=no ./luxrender.SlackBuild
+</code>
+If you set ''BLENDER=no'' then the plugins are stored, uninstalled, in ''/usr/share/luxrender-X.X''.
+===== Usage =====
+LuxRender has several ways for you to interact with it. To try it out, use the ''LuxTime'' example stored in ''/usr/share/luxrender-X.X''. Copy the ''LuxTime'' directory to your home directory and then load the ''.lxs'' file to produce a render.
+LuxRender can be invoked as a shell application:
+<code>
+$ luxconsole /path/to/file.lxs
+</code>
+LuxRender has a stand-alone GUI frontend, which you can launch from the **K Menu** or from a shell:
+<code>
+$ luxrender&
+</code>
+[{{ luxrender.jpg?666 |The LuxRender GUI rendering an image by **freejack**.}}]
+And finally, the Blender plugin, which can be activated and used the same as any other Blender plugin:
+  - Activate the Blender plugin in the **User Preferences** panel → **Render**. (There is no need to install the plugin as you might other Blender addons, because the LuxRender installer from SlackBuilds has already installed it for you.)
+  - Make it your active renderer in the *Info* panel
+[{{ luxblend.jpg |Selecting the LuxRender engine in Blender.}}]
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 **See Also** \\
-blender \\
+[[blender|Blender]] \\
-mitsuba \\
+[[mitsuba|Mitsuba]] \\
-povray
+[[http://povray.org|Povray]] \\
+[[yafaray|Yafaray]]
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+<wrap fa>[[luppp|R]]</wrap> <wrap fa>[[start|S]]</wrap> <wrap fa>[[lv2rack|Q]]</wrap>
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