Teardown及其他中的光线追踪体素.pdf

1、Dennis Gustafsson&Gabe Rundlett Tuxedo LabsRaytracing VoxelsIn Teardown and beyondFast Voxel Traversal AlgorithmAmanatides&Woo(1987)LightingShadow volume4 objects,individually transformedSingle large axis-aligned volumeShadow volume4000 x 3400 x 2904 billion voxelsShadow volume2x2x2=8 voxels per byt

2、e4000 x 3400 x 2904 billion voxels500 Mb VRAM2000 x 1700 x 145=High Quality TraceMedium Quality Trace?Medium Quality TraceLow Quality TraceFrame shapes are very inefficientLimitationsRestricted by the paletteLimitationsShadow volume implies a maximum level sizeLimitationsNo global illuminationLimita

3、tionsDynamic objects require shadow volume updatesLimitationsShadow volume quantization artifactsLimitationsShadow volume quantization artifactsLimitationsLimitationsSparse shapes Indexed palette Maximum level size Global illumination Dynamic objects Quantization artifactsDaxaCreated by Patrick Ahre

4、ns.Co-developed by Matj Sakmary and me Faster iteration Powerful rendergraph Bindless resources Reasonable defaults Syntax nicetiesWhat about primary view?LimitationsSparse shapes Indexed palette Maximum level size Global illumination Dynamic objects Quantization artifactsLimitationsSparse shapes Indexed palette Maximum level size Global illumination Dynamic objects Quantization artifactsDennis Gustafsson Gabe Rundlett Dennis Gustafsson Gabe Rundlett