c-ray | c-ray is a small , simple path tracer written in C | Game Engine library

macOS: Either follow these instructions, or the instructions for Linux below. Both work fine.
Install SDL2 (See installing SDL below)
Open the .xcodeproj file in Xcode
Edit scheme by clicking C-Ray in top left, make sure 'Use custom working directory' is ticked and set it to the root directory of this project.
Go into the Arguments tab, and add by clicking +. Type in ./input/scene.json, then click close
Build&Run with CMD+R
(Optional) Install SDL2 (See installing SDL below)
Run cmake ., or optionally cmake . -DNO_SDL2=True to disable SDL2.
Run make to build the project
Run binary: ./bin/c-ray ./input/scene.json (Making sure the working dir is the root directory). You can also pipe files into C-ray and it will read from there. This is useful for scripts that invoke C-ray. Example: cat input/scene.json | ./bin/c-ray Note: Reading the json from stdin assumes that the asset path is ./
Install Build Tools for Visual Studio
Optional: Download SDL2 Development libaries from here and extract: https://www.libsdl.org/download-2.0.php (https://www.libsdl.org/release/SDL2-devel-2.0.8-VC.zip)
Open a Developer Command Prompt for VS 2019, navigate to where you cloned c-ray and set path to SDL2DIR (where you extracted the files to, should have a few folders like 'include' and 'lib'): set SDL2DIR=E:\sdl2\SDL2-devel-2.0.8-VC\SDL2-2.0.8
Run cmake: cmake -G "Visual Studio 16 2019" .
(Optional) Copy your SDL2.dll into bin\Release\ and bin\Debug\
Build the generated solution: msbuild c-ray.sln /p:Configuration=Release
Run: bin\Release\c-ray.exe input\scene.json or type input\scene.json | bin\Release\c-ray.exe