https://github.com/florianvazelle/gltessellation

Real-time adaptative level of detail with tessellation shader
https://github.com/florianvazelle/gltessellation

compute-shader level-of-detail opengl real-time spatial-acceleration tessellation

Last synced: 30 days ago
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Real-time adaptative level of detail with tessellation shader

• Host: GitHub
• URL: https://github.com/florianvazelle/gltessellation
• Owner: florianvazelle
• Created: 2021-05-05T20:50:43.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2021-12-31T13:51:29.000Z (about 3 years ago)
• Last Synced: 2024-10-31T21:43:02.757Z (3 months ago)
• Topics: compute-shader, level-of-detail, opengl, real-time, spatial-acceleration, tessellation
• Language: CMake
• Homepage:
• Size: 68.4 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# glTessellation

![GitHub Workflow Status (branch)](https://img.shields.io/github/workflow/status/florianvazelle/glTessellation/build/main?label=Windows%20%7C%20Linux&logo=github)

## Building

### Build and run the standalone target

Use the following command to build and run the executable target.

```bash

cmake -B build

cmake --build build

./build/bin/glTessellation

```

## Dependencies

- C++20 compiler (to use [Mathematical constants](https://en.cppreference.com/w/cpp/numeric/constants)) :

  - VS 2019 16.5

  - GCC 10+ or Clang 11+

- [CMake](https://cmake.org/) for build system creation (>= 3.8)

- [Conan](https://conan.io/) for install packages (>= 1.0)

## Example

My scene renders a sphere whose vertices are modified by a geometry shader, to look like a "planet". And the color is added according to the height of the vertex.  

The camera can move in space.

- The sphere initially sent does not have many triangles.



  

  



- When the camera gets closer, we see the planet starting to become more detailed.



  

  



- When the camera is very close we see a very well defined planet.



  

  



## References

### Octree

- [C Implementation](https://stackoverflow.com/questions/5963954/fast-templated-c-octree-implementation#8423694)

- [As LOD System](https://gamedev.stackexchange.com/questions/184631/using-octrees-as-lod-system)

### OpenGL Wiki Shader

- [Tessellation Control](https://www.khronos.org/opengl/wiki/Tessellation_Control_Shader)

- [Tessellation](https://www.khronos.org/opengl/wiki/Tessellation)

### Tessellation Tutorial

- [Shader Example](http://www.ogldev.org/www/tutorial30/tutorial30.html)

### Papers

- [Adaptive GPU Tessellationwith Compute Shaders](https://onrendering.com/data/papers/isubd/isubd.pdf)

- [A Real-Time Procedural Universe](https://www.gamasutra.com/view/feature/2511/a_realtime_procedural_universe_.php?print=1)

- [Efficient GPU Rendering of Subdivision Surfaces using Adaptive Quadtrees](https://graphics.stanford.edu/~niessner/papers/2016/4subdiv/brainerd2016efficient.pdf)

- [Terrain Tessellation with Geomipmapping](http://users.csc.calpoly.edu/~zwood/teaching/csc572/final15/rpeder/index.html)

- [Dynamic Feature-Adaptive Subdivision](https://graphics.stanford.edu/~niessner/papers/2015/0dynamic/schaefer2015dynamic.pdf)

### Books

- [ShaderX](https://www.realtimerendering.com/resources/shaderx/Tips_and_Tricks_with_DirectX_9.pdf)

- [GPU Gems](https://developer.nvidia.com/gpugems/gpugems2/part-i-geometric-complexity/chapter-7-adaptive-tessellation-subdivision-surfaces)

### Tools

- [Pixar OpenSubdiv](https://graphics.pixar.com/opensubdiv/docs/intro.html)