RGKrt

Photorealistic physically-based renderer I initially wrote for photorealistic graphics course and improved afterwards.

Main features:

• Bidirectional path tracing
• Uses efficient data structures
• Multisampling using various sample generators
• Depth of field
• Various BRDFs built-in: Phong, Cook-Torr, Beckmann, GGX
• Refractions, reflections, caustics
• Areal (surface) lights
• Environmental map support
• Linearly Transformed Cosines
• Supports bumpmaps and normal maps
• Non-interactive runtime (batch processing)
• Simple and transparent input file format
• Preview mode, very basic support for animations
• HDR output in openEXR format

Currently it runs only on Linux. Source code is available on Github.

RGKrt is written in C++14 and it uses assimp, png++, glm, libjpeg, ctpl and openEXR libraries.

Example renders:

360 interactive view	360 rendered animation

Sunny	Cloudy
Above images use the same input, with only lighting conditions changed (click to enlarge).
	Coffee Maker model by cekuhnen: blendswap.com/user/cekuhnen, used under the terms of CC-BY-3.0 license. 360 rendered animation
Using LTC GGX BRDF to simulate smooth polished stone.

360 interactive view	360 rendered animation