pbrt, Version 3 - Intelligent Indirect Lighting Estimation
More info, demo, and build instructions here: https://osr.jstudios.ovh
This repository holds the source code to the version of pbrt that is described in the third edition of Physically Based Rendering: From Theory to Implementation, by Matt Pharr, Wenzel Jakob, and Greg Humphreys. As before, the code is available under the BSD license.
The pbrt website has general information about both the Physically Based Rendering book as well as many other resources for pbrt.
This version has been modified to implement One Shot Radiance.
Over 8GB of example scenes are available for download. (Many are new and weren't available with previous versions of pbrt.) See the pbrt-v3 scenes page on the pbrt website for information about how to download them.
After downloading them, see the
README.md.html file in the scene
distribution for more information about the scenes and preview images.
One Shot Radiance specific example scenes will be coming soon.
A detailed guide for downloading and building PBRTv3-OSR from source is here: https://osr.jstudios.ovh/CompileFromSource
While the original PBRTv3 supports Linux, OSX and Windows, PBRTv3-OSR has only been developed for Linux.
To check out pbrt together with all dependencies, be sure to use the
--recursive flag when cloning the repository, i.e.
$ git clone --recursive https://github.com/giuliojiang/pbrt-v3-IILE/
If you accidentally already cloned pbrt without this flag (or to update an pbrt source tree after a new submodule has been added, run the following command to also fetch the dependencies:
$ git submodule update --init --recursive
Debug and Release Builds
By default, the build files that are created that will compile an optimized release build of pbrt. These builds give the highest performance when rendering, but many runtime checks are disabled in these builds and optimized builds are generally difficult to trace in a debugger.
To build a debug version of pbrt, set the
CMAKE_BUILD_TYPE flag to
Debug when you run cmake to create build files to make a debug build. For
example, when running cmake from the command line, provide it with the
-DCMAKE_BUILD_TYPE=Debug. Then build pbrt using the resulting
build files. (You may want to keep two build directories, one for release
builds and one for debug builds, so that you don't need to switch back and
Debug versions of the system run much more slowly than release builds. Therefore, in order to avoid surprisingly slow renders when debugging support isn't desired, debug versions of pbrt print a banner message indicating that they were built for debugging at startup time.
The use of
bin/pbrt as launcher is recommended.
Move usage information here: https://osr.jstudios.ovh/UsageInfo