Browsing appleseed Source Code - appleseedhq/appleseed GitHub Wiki
Woboq Source Code Browser
The team at Woboq is kindly hosting a fully cross-referenced version of appleseed's source code (but it is unfortunately quite outdated): https://code.woboq.org/appleseed/appleseed/
Top-level Libraries
appleseed/foundation/: base code, utilities, etc. Nothing specific to rendering.appleseed/renderer/: the entire renderer is there.appleseed/main/: entry point of the appleseed shared library / DLL.
Foundation Code
appleseed/foundation/math/bvh/: generic BVH implementation.appleseed/foundation/math/intersection/: low-level intersection primitives.
Renderer Code
appleseed/renderer/kernel/intersection/: intersection subsystem, built on top of the generic BVH code and relying on the low-level intersection primitives.appleseed/renderer/kernel/lighting/pathtracer.h: generic path tracing loop used whenever a path needs to be traced.appleseed/renderer/kernel/lighting/pt/ptlightingengine.cpp: unidirectional path tracer.appleseed/renderer/modeling/: all the entities to model a scene are defined there.appleseed/renderer/modeling/bsdf/bsdf.h: the interface that a BSDF must implement.appleseed/renderer/modeling/bsdf/lambertianbrdf.cpp: implementation of one of the simplest BRDF, the Lambertian BRDF.appleseed/renderer/kernel/rendering/generic/genericsamplerenderer.cpp: the code that renders a single pixel sample.appleseed/renderer/kernel/rendering/final/uniformpixelrenderer.cpp: the code that renders a single pixel (uniform, non-adaptive sampling).appleseed/renderer/kernel/rendering/final/adaptivepixelrenderer.cpp: the adaptive version.
Applications
appleseed.cli/main.cpp: entry point of appleseed.cli, the command line interface of appleseed.appleseed.cli/main.cpp: function that renders a project file in appleseed.cli.appleseed.studio/main/main.cpp: entry point of appleseed.studio, the graphical user interface of appleseed.
Hot Spots
The "hottest" functions when rendering (the ones that have the biggest impact on performance):