https://github.com/potato3d/grid-rt

GPU-accelerated ray tracing using GLSL and CUDA
https://github.com/potato3d/grid-rt

cuda glsl gpu ray-tracing real-time-rendering

Last synced: 2 months ago
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GPU-accelerated ray tracing using GLSL and CUDA

• Host: GitHub
• URL: https://github.com/potato3d/grid-rt
• Owner: potato3d
• License: mit
• Created: 2021-02-13T13:08:35.000Z (over 5 years ago)
• Default Branch: main
• Last Pushed: 2021-02-13T13:20:16.000Z (over 5 years ago)
• Last Synced: 2025-11-22T11:29:47.666Z (7 months ago)
• Topics: cuda, glsl, gpu, ray-tracing, real-time-rendering
• Language: C++
• Homepage:
• Size: 226 KB
• Stars: 3
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# grid-rt

GPU-accelerated ray tracing using GLSL and CUDA

Source code for the article [GPU-Accelerated Uniform Grid Construction for Ray Tracing](http://www.dbd.puc-rio.br/depto_informatica/09_14_ivson.pdf)

This repository implements the Qt ray-tracing application that uses the library from the [grid](https://github.com/potato3d/grid) repository.

# Description

We trace one ray per GPU thread through a uniform grid spatial acceleration structure using a 3D-DDA algorithm. We have two implementations for the ray tracing: GLSL-based and CUDA-based. At the time, the GLSL implementation was about 30% faster. Please check the companion project [grid](https://github.com/potato3d/grid) for the implementation of the GPU-based uniform grid construction.

The GLSL ray tracing implementation is in include/rtgl and src/rtgl directories.

The CUDA ray tracing implementation is in include/rtc and src/rtcuda directories.

This project also includes CPU-based ray tracing routines in include/rt, include/rtp, src/rtcore and src/rtplugins directories. Also includes CPU-based optimized kd-tree construction and traversal routines.

Please check the paper reference above for more implementation details.

# Examples

These are some images generated with our algorithm for benchmark animated scenes:

![scenes](https://github.com/potato3d/grid/blob/main/imgs/scenes.png "Animated scenes")

These are the results in performance, compared to state of the art:

![speed](https://github.com/potato3d/grid/blob/main/imgs/speed.png "Performance results")

# Build

Visual Studio project files available in visualstudio directory.