This project contains a number of experiments in the simulation / graphics category. I frequently write Haskell projects where I delegate the performance critical, numerical code to C/C++ or offload it to the GPU. I wanted to try using Rust as a safer and more functional alternative. The application itself is written in Haskell, doing the display, user interaction and non-inner-loop parts with the actual computations done in a Rust library.

Experiments include...

• Software rasterizer using half-space functions, doing perspective and sub-pixel correct, gap-less rasterization, depth buffering, switchable between vertex and pixel shading, many different shaders implemented, does IBL based on pre-filtered irradiance cubemaps, different environments included, a selection of scenes, many with baked ambient occlusion or radiosity, build-in benchmarking, gamma corrected output, selectable backgrounds, parallelized
• Gravitational N-Body simulation, both a brute force O(N^2) and the O(n log n) Barnes-Hut algorithm are implemented, adjustable time step and cutoff criteria, rendering of alpha blended particles with tails, parallelized, multiple interesting initial configurations to choose from
• The famous 'Game of Life' cellular automata, optimized and parallelized implementation, library of recallable patterns

If you want to read actual algorithm descriptions and references for these experiments, including more, higher quality images visit the following link to my website

Rust projects on Blitzcode.net

The Haskell application itself might also be of interests. It features a pluggable experiment framework, modern OpenGL 3/4.x style rendering, text, quad rendering, screenshots, framebuffer system, FPS counter, GLSL, logging etc. A good starting point for your own Haskell + OpenGL adventures. Also see my other Haskell and GLSL program containing my distance field / ray marching related experiments.

This project uses the Stack / Cabal tools (stack build) for building the Haskell code and Cargo (cargo build --release) for building the Rust code. There's a top-level Makefile invoking both, simply do

make

once you have Stack and Cargo / Rust installed.

This program is published under the MIT License.

Developed by Tim C. Schroeder, visit my website to learn more.