prismGL

Lightweight OpenGL 3D renderer built in C++ as a capstone project for The Marcy Lab School.

Overview

prismGL is a small graphics project focused on learning low-level rendering fundamentals outside of a web stack. It creates an OpenGL window, loads textures, renders indexed geometry, and implements a movable camera.

The project is now built with CMake and supports Linux, Windows/MSVC, and Windows cross-compilation from Linux with MinGW-w64.

Tech Stack

• C++20
• OpenGL 3.3
• GLFW
• GLAD
• GLM
• stb_image
• CMake

Features

• Textured 3D geometry rendered with OpenGL
• Camera movement with frame-rate independent controls
• Mouse-look camera rotation
• Resizable viewport with framebuffer-aware resizing
• Cross-platform CMake builds
• GitHub Actions artifacts for Linux and Windows

Capstone Presentation Slides

https://docs.google.com/presentation/d/1KO9wPCWXOwfeYVaQ4cV5OP2ssWn4ZD9pixSIIrQd90w

Build

Linux

Install build dependencies, then run:

cmake --preset linux-release
cmake --build --preset linux-release --config Release

Output:

build/linux-release/bin/prismGL

Windows with Visual Studio

From a Windows machine with Visual Studio 2022 installed:

cmake --preset windows-release
cmake --build --preset windows-release --config Release

Output:

build/windows-release/bin/prismGL.exe

Windows cross-build from Linux

Install MinGW-w64, then run:

cmake --preset windows-mingw-release
cmake --build --preset windows-mingw-release --config Release

Output:

build/windows-mingw-release/bin/prismGL.exe

Controls

• W, A, S, D — Move camera
• Space / Left Ctrl — Move up/down
• Left Shift — Sprint
• Left Mouse Button + move mouse — Look around
• R — Rename the window
• Esc — Close the window

Notes

• Runtime assets are expected in a res directory next to the build output directory.
• The default texture can be replaced by swapping res/aigis.png with another PNG using the same filename.