VIDEO: https://vimeo.com/323361180 Variable rate rendering Always - - PowerPoint PPT Presentation

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VIDEO: https://vimeo.com/323361180 Variable rate rendering Always - - PowerPoint PPT Presentation

Jul 19, 2023 396 likes •721 views

VIDEO: https://vimeo.com/323361180 Variable rate rendering Always grouping similar work items No rasterization Real-time rates (50 ms or less per frame) Groups similar work items Enables efficient implementation of:

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VIDEO: https://vimeo.com/323361180

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  • Variable rate rendering
  • Always grouping similar work items
  • No rasterization
  • Real-time rates (50 ms or less per frame)
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  • Groups similar work items
  • Enables efficient implementation of:
  • Variable rate rendering
  • Foveated rendering
  • Checkerboard rendering
  • Any analytic or random pattern
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FOVEATED VRR (Variable Res. Rendering)

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TIP: as NN input, find scene properties that can be mostly represented with a continuous function.

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Performance impact BVH vs. SMG

BVH – Linear SMG – Sublinear

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  • Spatial denoise
  • NN approximate energy at surface
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GOOD FOR:

  • Static scenes
  • Can compliment lightmaps;

by vectorizing soft shadow regions.

BAD FOR:

  • Dynamic scenes
  • Very small primitives
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A viable high performance substitute for:

  • Bidirectional PT
  • Metropolis light transport

Finds up to 70% more paths than unidirectional path tracing.

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GPU 1 GPU 2 … GPU N

  • Offline voxel data interpolation
  • A bit of overfitting is welcome
  • Each voxel can be processed by a

different GPU, training scales linearly!

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Rage, Megatextures | Id Software

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Animation guided by NN inputs QNM model size: ~5 KB QNM primitives: 9 Polygonal model size: ~1 MB

(vertices, normals, texture coordinates)

Polygonal primitives (triangles): 31 415

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Questions

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Email: nejc@lightmass-dynamics.com Twitter: @nejclesek