https://github.com/Mighty-A/OptimizedMetaBall

🔮GPU-based real-time raytracing rendering of transparent metaball. (Project for CS337 Computer Graphics)
https://github.com/Mighty-A/OptimizedMetaBall

Last synced: about 1 month ago
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🔮GPU-based real-time raytracing rendering of transparent metaball. (Project for CS337 Computer Graphics)

• Host: GitHub
• URL: https://github.com/Mighty-A/OptimizedMetaBall
• Owner: Mighty-A
• License: other
• Created: 2021-12-07T13:36:25.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2021-12-28T05:39:50.000Z (almost 3 years ago)
• Last Synced: 2024-08-01T19:47:24.770Z (4 months ago)
• Language: C++
• Homepage:
• Size: 5.02 MB
• Stars: 3
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-cs - @Mighty-A @Healthcliff-Ding, 2021 Fall

README

        
# Optimized Raytracing MetaBall: Acceleration and Transparent 

🔮GPU-based real-time raytracing rendering of transparent metaball. (Project for CS337 Computer Graphics)

## Features

* Implement BVH acceleration for MetaBalls

* Implement transparent (trace refraction rays) for MetaBalls

* GPU-based real-time rendering of the final scene (acceleration and transparent).

## Final Scene

Transparent metaballs: 25  

w: 1920, h: 1080  

recursion depth: 8  

fps: > 60

![](./img/final_scene.png)

## Requirements

* GPU and driver with support for [DirectX 12 Ultimate](http://aka.ms/DirectX12UltimateDev)

* Windows 10 SDK 22000

* Shader model >= 6.5

## Controls

* ALT+ENTER - toggles between windowed and fullscreen modes.

* C - enable/disable camera animation.

* L - enable/disable light animation.

## Performance Benchmark

### BVH acceleration

We test two cases (with and without BVH acceleration) on a scene with 9 non-transparent metaballs. (1920 x 1080, recursion depth = 3)

| BVH    | fps  |

| ----------- | ---- |

| BVH unabled | 89   |

| BVH enabled | 601  |

- Without BVH  

![Benchmark without BVH](./img/benchmark_without_bvh.png)

- With BVH  

![Benchmark without BVH](./img/benchmark_with_bvh.png)

### Interval Refinement 

We test two cases (with interval refinment and without) on a scene with 125 non-transparent metaballs. (1920 x 1080, recursion depth = 3)

Visible differences in visual effects

![Interval Refinement](./img/interval_refinement.png)

### Transparent 

left: transparency in deformation  

middle: refracted virtual image  

right: total reflection  

![Transparent](./img/transparent.png)

## Known Issues

* Hardcoded shader index 

* MetaBalls need a wraper for closest-hit shader

## Reference Code

[DirectX-Graphics-Samples](https://github.com/microsoft/DirectX-Graphics-Samples)

## Report

[report](https://1drv.ms/w/s!AqTcPxnfNYjMj5ocZhqJx9TrpvWDQA?e=tQS7Rd)