This version is targeting the Glide API, designed to control 3DFX graphic adapters (such as the Voodoo 1 and the Banshee) under DOS.
The DJGPP toolchain is used to compile C to the DOS target. The Glide 'driver' is also compiled using the same toolchain from the sources released online and adjusted for compilation with DJGPP by SuperIlu (repository). The version included in the repository is targeting the Voodoo 1 specifically. Documentation for the Glide API can be found on 3dfxarchive.com. For testing, the Voodoo Graphics was emulated using DOSBox-X.
Vertex transformation and shading is performed on the CPU. Clipping is also performed manually, generating triangle strip lists that are then sent to the graphics adapter. Textures are limited to a 256px resolution, and stored in the RGB565 format ; mipmaps are not used for now. Inputs are handled using a custom interrupt.