3DOS is a low-poly old-school software renderer for MS-DOS written in C and x86 assembly, targeting VGA mode 13h at 320x200 resolution. Download the EXE file from itch.io.
Built with Borland Turbo C++ 3.0 (DOS), Turbo Assembler 4.1 and Turbo Link 5.0.
- Triangle rasterization
- 3D perspective projection
- Simple vector/matrix math with LUT-based sin/cos
- Backface culling
- Ordered dithering with 4x4 bayer matrix
- Double buffering
- Assembly-optimized framebuffer transfer - x86 REP MOVSW with far pointers for copying pixels to VGA memory
- Low-level keyboard input — custom interrupt handler with key press and release detection
| Key | Description |
|---|---|
WASD |
Move |
↑ ↓ |
Fly up/down |
ESC |
Exit |
1/2/3/4 |
Cube/Ico/Tree/F22 |
This project is licensed under the BSD 3-Clause License. See the LICENSE file for details.