Comments on: Efficient Sparse Voxel Octrees http://www.realtimerendering.com/blog/efficient-sparse-voxel-octrees/ Tracking the latest developments in interactive rendering techniques Mon, 17 Jun 2013 03:17:13 +0000 hourly 1 http://wordpress.org/?v=3.4.1 By: Spudd86 http://www.realtimerendering.com/blog/efficient-sparse-voxel-octrees/comment-page-1/#comment-334 Spudd86 Mon, 08 Mar 2010 17:22:23 +0000 http://www.realtimerendering.com/blog/?p=1058#comment-334 ah found some of the old docs for cube http://strlen.com/sauerbraten/docs/dev/wikistuff.html scroll down to the bit about edge spans. ah found some of the old docs for cube http://strlen.com/sauerbraten/docs/dev/wikistuff.html scroll down to the bit about edge spans.

]]> By: Spudd86 http://www.realtimerendering.com/blog/efficient-sparse-voxel-octrees/comment-page-1/#comment-316 Spudd86 Tue, 23 Feb 2010 00:22:05 +0000 http://www.realtimerendering.com/blog/?p=1058#comment-316 Sounds a bit like the data structures used in cube to represent level geometry: http://cubeengine.com/ Cube doesn't use it as voxels... but the contour stuff is like what cube does. Cube's level geometry is real time editable in the game engine, AND very compact. Sounds a bit like the data structures used in cube to represent level geometry: http://cubeengine.com/

Cube doesn’t use it as voxels… but the contour stuff is like what cube does.

Cube’s level geometry is real time editable in the game engine, AND very compact.

]]> By: PolyVox http://www.realtimerendering.com/blog/efficient-sparse-voxel-octrees/comment-page-1/#comment-309 PolyVox Fri, 19 Feb 2010 08:40:34 +0000 http://www.realtimerendering.com/blog/?p=1058#comment-309 This is very much in my area of interest so thanks for bringing to my attention! I had a chance to play with the demo last night and it seemed nice. I estimated by eye that the demo dataset was either 512³ or 1024³ and it ran at around 50 fps on my NVidia GTX 260. There's a lot of preprocessing (several hours) which I believe is mostly for building the octree, but could also be the ambient occlusion calculations. They also provide a tool for converting your own models into voxel format but I haven't tried this. If I gt a chance I might try importing the voxel models onto my own engine to see how their CUDA raycasting approach compares with extracting the isosurface and rendering triangles. Their format is a little different to mine, though. There are several prototype 'sparse voxel octree' game engines out there, but this is the first I have seen which has actually released a playable demo to prove it works. Well done NVidia :-) This is very much in my area of interest so thanks for bringing to my attention! I had a chance to play with the demo last night and it seemed nice. I estimated by eye that the demo dataset was either 512³ or 1024³ and it ran at around 50 fps on my NVidia GTX 260. There’s a lot of preprocessing (several hours) which I believe is mostly for building the octree, but could also be the ambient occlusion calculations. They also provide a tool for converting your own models into voxel format but I haven’t tried this.

If I gt a chance I might try importing the voxel models onto my own engine to see how their CUDA raycasting approach compares with extracting the isosurface and rendering triangles. Their format is a little different to mine, though.

There are several prototype ‘sparse voxel octree’ game engines out there, but this is the first I have seen which has actually released a playable demo to prove it works. Well done NVidia :-)

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