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Cone tracing - Wikipedia
https://en.wikipedia.org/wiki/Cone_tracing
Cone tracing - HandWiki
https://handwiki.org/wiki/Cone_tracing
Cone tracing solves certain problems related to sampling and aliasing, which can plague conventional ray tracing. However, cone tracing creates a host of problems of its own. For example, just intersecting a cone with scene geometry leads to an enormous variety of possible results. For this reason, cone tracing has remained mostly unpopular.
Cone tracing - Wikipedia
https://en.wiki.hereiszyn.com/wiki/Cone_tracing
Cone tracing solves certain problems related to sampling and aliasing, which can plague conventional ray tracing. However, cone tracing creates a host of problems of its own. For example, just intersecting a cone with scene geometry leads to an enormous variety of possible results. For this reason, cone tracing has remained mostly unpopular.
Voxel Cone Tracing | OGRE - Open Source 3D Graphics …
https://www.ogre3d.org/2019/08/05/voxel-cone-tracing
Voxel Cone Tracing could be seen as an approximated version of ray marching. The scene is voxelized and three voxels are generated, containing albedo, normals and emissive properties. In other words, we build a Minecraft-looking representation of the world: Albedo Normals We run a compute shader (‘VCT/Voxelizer’) to voxelize the scene.
Global Illumination Using Voxel Cone Tracing – Andrew Pham
https://andrew-pham.blog/2019/07/29/voxel-cone-tracing/
We only trace a single cone in the direction of the reflection using a supplied aperture for the indirect specular lighting. The aperture is a crucial input to the cone tracing function that will allow us to calibrate the amount of reflection and specular effect as an approximation of the roughness of the material.
Voxel Cone Traced Global Illumination – Leif Node
http://leifnode.com/2015/05/voxel-cone-traced-global-illumination/
Cone tracing is a way to approximate the result of casting many rays into a scene with a distribution on a lobe. This is done by taking samples along a ray, but as the samples get further from the ray origin the sampled mip map level increases. Each circle is a sample along a ray; the size of the circles corresponds to the mip map sampling level
Real-Time Rendering · cone tracing
http://www.realtimerendering.com/blog/tag/cone-tracing/
Some cool results here using cone tracing for global illumination effects. Seeing these effects for dynamic objects at interactive rates is great stuff, especially since they’re having to update octrees on the fly. I love the colored Japanese woodcuts of classic videogames that Jed Henry has been making:
global illumination - How does voxel cone tracing work ...
https://computergraphics.stackexchange.com/questions/5823/how-does-voxel-cone-tracing-work
Voxel Cone Tracing L v ( x, ω ^ j, α j) is computed using voxel cone tracing, which can be implemented by marching the mip-mapped 3D voxel texture in UVW texture space. Our accumulated radiance (red, green, blue channels) and opacity (alpha channel) are initialized to zero. Lv ← [0, 0, 0, 0]
REAL-TIME VOXEL CONE-TRACING
http://cis565-fall-2012.github.io/lectures/11-01-GigaVoxels-And-Sparse-Textures.pdf
• Approximate a hemisphere by tracing cones outwards • Treat each gather point as point light. • Ambient Occlusion can be done in a similar way Indirect Lighting Cyril Crassin, GigaVoxels: A Voxel-Based Rendering Pipeline For Efficient Exploration Of Large And Detailed Scenes • A sharper cone in the direction of the reflected view direction.
Voxel Cone Tracing and Sparse Voxel Octree for Real-time ...
https://on-demand.gputechconf.com/gtc/2012/presentations/SB134-Voxel-Cone-Tracing-Octree-Real-Time-Illumination.pdf
Voxel cone tracing Geometry pre-filtering Traced like a participating media Volume ray-casting Voxel representation Scene geometry : Opacity field + Incoming radiance 3D MIP-map pyramid of pre-filtered values Quadrilinearly interpolated samples n r l Rendering algorithm 1. Light pass (es) Bake irradiance (RSM) 2. Filtering pass
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