A simple software 3D renderer in C.

It uses my bitmap module as a framebuffer and for texture maps.

The renderer uses Barycentric coordinates for texture mapping as in tinyrenderer, which is a bit slow. I was working on a scanline rasterizer at some point, but I had some trouble with the perspective correction, and didn't get around to finishing it.

• Dmitry V. Sokolov's tinyrenderer tutorial
• The www.scratchapixel.com tutorials
• The official home of bmp.c is here: https://github.com/wernsey/bitmap
• The /gl-matrix code is originally from https://github.com/coreh/gl-matrix.c, but I've made some modifications in my fork: https://github.com/wernsey/gl-matrix.c

Other references

1. https://www.davrous.com/2013/06/13/tutorial-series-learning-how-to-write-a-3d-soft-engine-from-scratch-in-c-typescript-or-javascript/
2. http://www.3dcpptutorials.sk/index.php?id=60
3. https://www.opengl.org/discussion_boards/showthread.php/156767-Clipping-triangles-in-clip-space
4. https://github.com/bulletphysics/bullet3/blob/master/examples/TinyRenderer/TinyRenderer.cpp
5. http://www.gamasutra.com/view/news/168577/Indepth_Software_rasterizer_and_triangle_clipping.php
6. http://myweb.lmu.edu/dondi/share/cg/hsr.pdf
7. Object files
   • http://www.martinreddy.net/gfx/3d/OBJ.spec
   • http://paulbourke.net/dataformats/obj/
8. MD2 files
   • http://tfc.duke.free.fr/coding/md2-specs-en.html
   • http://tfc.duke.free.fr/old/models/md2.htm
   • http://openglsamples.sourceforge.net/md2.html
9. MD5 files
   • http://tfc.duke.free.fr/coding/md5-specs-en.html
   • https://www.3dgep.com/loading-and-animating-md5-models-with-opengl/
   • https://www.braynzarsoft.net/viewtutorial/q16390-27-loading-an-md5-model
   • https://lwjglgamedev.gitbooks.io/3d-game-development-with-lwjgl/content/chapter19/chapter19.html

In the future I might consider adding support for these file formats:

• STL
• PLY
• OFF