silenterus / cube-to-sphere

Cube Map to Sphere/Equirectangular Map Converter

Cube to Sphere

Description

A simple command line tool to convert from a 6-image cube map to a single image HDR equirectangular projection (sphere map). Primarily created to generate the basis for IBL (image based lighting) specular and diffuse environment maps based off of existing non-HDR skyboxes.

Very Long Term Future Plans

• Graphical Interface
• Sphere to Cube as well as Cube to Sphere conversions
• Built in IBL post processing

Dependencies

• GLFW
• GLew
• GLM
• STB Image
• STB Image Write

References

• https://learnopengl.com/PBR/IBL/Diffuse-irradiance
• http://paulbourke.net/miscellaneous/cubemaps/