A software implementation of a GPU rendering pipeline. Written in C++17 as part of the IZG (Computer Graphics Principles) course at FIT VUT Brno.
Score 20/20 pts.
The full rendering pipeline executed in software on the CPU:
- Command buffer — GPU command queue (bind, draw, clear, user/sub commands)
- Vertex assembly — indexed and non-indexed, attribute fetching from buffers
- Vertex shader — programmable per-vertex transform stage
- Perspective division & viewport transform
- Backface culling — front face configurable (CW/CCW)
- Near-plane clipping — clip-space triangle clipping before rasterization
- Rasterization — barycentric coordinates, perspective-correct interpolation
- Stencil test — configurable comparison, separate front/back ops (sfail/dpfail/dppass)
- Depth test — with optional depth write
- Fragment shader — programmable per-fragment stage with discard support
- Blending — configurable source/destination factors and equation
- Color/depth/stencil write masks
- 3D model rendering — glTF/GLB model loading with per-mesh shaders
Download the latest binaries from the Releases page.
chmod +x izgProject_linux
./izgProject_linuxchmod +x izgProject_macos
# First run: right-click the binary -> Open, or:
xattr -d com.apple.quarantine ./izgProject_macos
./izgProject_macos| Input | Action |
|---|---|
| Left mouse + drag | Rotate camera |
| Right mouse + drag | Zoom |
| Middle mouse + drag | Pan |
n / p |
Next / previous scene |
w s a d q e |
Move camera |
Esc |
Quit |
./izgProject -h # help
./izgProject -c # run conformance tests (Linux only, see below)
./izgProject --method N # select rendering method (scene)Note: Conformance tests (
-c) require the teacher's pre-compiled reference binary, which was only provided for Linux and Windows. Tests will not run on macOS.
Source code is not public — course project policy. Built and tested on Ubuntu 24.04 (x86_64) and macOS (aarch64).