Voxelize mesh algorithm in Unity. (includes GPU and CPU voxelizers.)
the Demo for GPU Particle with geometry shader. (only tested on windows10 (GTX 1060))
Inspired by Keijiro Takahashi works⚡️ StandardGeometryShader & KvantSpray
the Demo to update the resolution of voxels in realtime. (only tested on windows10 (GTX 1060))
Sample a mesh from SkinnedRenderer in every frame and voxelize it in realtime.
the human model and animation from asset store.
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 );Tested on Unity 2018.3.0f2, windows10 (GTX 1060), macOS (metal, not compatible with GPU Particle Demo).
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Triangle mesh voxelization / Wolfire Games Blog - http://blog.wolfire.com/2009/11/Triangle-mesh-voxelization
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Möller–Trumbore intersection algorithm - https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm
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keijiro/StandardGeometryShader - https://github.com/keijiro/StandardGeometryShader
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keijiro/KvantSpray - https://github.com/keijiro/KvantSpray
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Post Processing Stack - https://www.assetstore.unity3d.com/jp/#!/content/83912