Compiling ProtoRay

Requirements: Linux, CMake, ICC, GCC, CUDA, Embree, OptiX

By default, you have to put the Embree source directory 'embree' in the same directory as the ProtoRay source directory, and the Embree build directory must be called 'embree-build'. These paths can be changed in CMake, e.g.

• git clone https://github.com/embree/embree.git embree

• cd embree

• mkdir embree-build

• cd embree-build

• ccmake .. (set CMake variables, configure + generate)

• make

• git clone https://github.com/embree/embree-benchmark-protoray.git protoray

• cd protoray

• mkdir protoray-build

• cd protoray-build

• ccmake .. (set CMake variables (including path to "embree" directory, configure + generate)

• make

For ProtoRay you can set the explicit target ISA with the HOST_ISA CMake option (e.g., CORE-AVX2 for HSW, MIC-AVX512 for KNL, CORE-AVX512 for SKX).

Running ProtoRay

Before rendering a scene in .obj format, you have to build a corresponding .mesh file:

./protoray build scene.obj

Render with single-ray diffuse path tracing:

./protoray render scene.mesh -no-mtl -r diffuse -spp 64

Render with packet diffuse path tracing:

./protoray render scene.mesh -no-mtl -r diffusePacket -size 1920,1080 -spp 64

Render with stream diffuse path tracing:

./protoray render scene.mesh -no-mtl -r diffuseStream -streamSize 256 -size 1920,1080 -spp 64