FunGT

FunGT is a C++ 3D graphics application that combines professional rendering capabilities with an intuitive interface. Built on OpenGL and ImGui, FunGT provides real-time model viewing, material editing, and animation playback—all accessible through a clean, professional GUI.

C++20 SYCL / DPC++ GPU Compute Physics OpenGL ImGui CMake

Design Philosophy

GPU-first: algorithms are designed around massive parallelism
Data-oriented: memory layout matters more than abstractions
Modern C++: explicit ownership and predictable lifetimes
Engine as a lab: correctness → optimization → scalability

Demos

FunGT includes a growing set of interactive demos used to validate performance, correctness, and scalability.

Short animation rendered with PBR Path tracer

Animation created with the animation creator feature

GPU Collision Detection

Broad-phase collision detection implemented entirely on the GPU, using uniform grids and parallel prefix-sum-based compaction.

Dynamic object support
Parallel cell occupancy tracking
Designed for thousands of bodies

Path Tracer (GPU)

A physically based path tracer supporting GPU execution.

Area lights & emissive geometry
PBR materials
Hot / cold data layout optimization

Experimental.

Build

Roadmap

GPU-only physics pipeline
Advanced constraint solvers
SYCL-based rendering backend
Technical documentation & deep dives

Repository

https://github.com/FunGTs/FunGT