unity-voxel
Voxelize mesh algorithm in Unity. (includes GPU and CPU voxelizers.)
GPUVoxelParticleSystem
the Demo for GPU Particle with geometry shader. (only tested on windows10 (GTX 1060))
Inspired by Keijiro Takahashi works⚡️ StandardGeometryShader & KvantSpray
GPUVoxelMosaic
the Demo to update the resolution of voxels in realtime. (only tested on windows10 (GTX 1060))
GPUVoxelSkinnedMesh
Sample a mesh from SkinnedRenderer in every frame and voxelize it in realtime.
the human model and animation from asset store.
Usage
with GPU Voxelizer (recommended)
GPUVoxelData data = GPUVoxelizer.Voxelize(
voxelizer, // ComputeShader (Voxelizer.compute)
mesh, // a target mesh
64, // # of voxels for largest AABB bounds
true // flag to fill in volume or not; if set flag to false, sample a surface only
);
// build voxel cubes integrated mesh
GetComponent<MeshFilter>().sharedMesh = VoxelMesh.Build(data.GetData(), data.UnitLength, useUV);
// build 3D texture represent a volume by voxels.
RenderTexture volumeTexture = GPUVoxelizer.BuildTexture3D(
voxelizer,
data,
texture, // Texture2D to color voxels based on uv coordinates in voxels
RenderTextureFormat.ARGBFloat,
FilterMode.Bilinear
);
// need to release a voxel buffer
data.Dispose();
with CPU Voxelizer
// Voxelize target mesh with CPU Voxelizer
List<Voxel> voxels = CPUVoxelizer.Voxelize(
mesh, // a target mesh
20 // # of voxels for largest AABB bounds
);
Compatibility
Tested on Unity 2018.3.0f2, windows10 (GTX 1060), macOS (metal, not compatible with GPU Particle Demo).
Sources
-
Triangle mesh voxelization / Wolfire Games Blog - http://blog.wolfire.com/2009/11/Triangle-mesh-voxelization
-
Möller–Trumbore intersection algorithm - https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm
-
keijiro/StandardGeometryShader - https://github.com/keijiro/StandardGeometryShader
-
keijiro/KvantSpray - https://github.com/keijiro/KvantSpray
-
Post Processing Stack - https://www.assetstore.unity3d.com/jp/#!/content/83912