Our tech artist did a test scene with our forthcoming virtual texturing system. This scene uses just three 256x256 PBR materials (3 textures each). Total memory consumption (ASTC4x4/BC7) = 0.56MB Total storage cost (2bpp AVIF) = 144KB www.youtube.com/watch?v=IjlE... - ThreadSky

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sebaaltonen.bsky.social • 76 days ago

Our tech artist did a test scene with our forthcoming virtual texturing system.

This scene uses just three 256x256 PBR materials (3 textures each).

Total memory consumption (ASTC4x4/BC7) = 0.56MB
Total storage cost (2bpp AVIF) = 144KB

https://www.youtube.com/watch?v=IjlERqzmVJQ

Comments

sebaaltonen.bsky.social•76 days ago

This demo doesn't yet have a virtual texture decaling system. It will make it possible to add lots of texture variety with minimal storage cost. But it's possible to make pretty good-looking results even with just a couple of traditional tiling textures.

belgianrenderer.gijskaerts.com•76 days ago

I think I remember you mentioning in one of your talks that you have a lean gbuffer by not writing color to it and instead sampling colors based on material ID. Does VT allow you to support textures this way as well by guaranteeing you'll only ever have one texture atlas for all materials?

sebaaltonen.bsky.social•76 days ago

VT makes it possible to fit all textures in one atlas (3x atlases, actually, since there are three textures per PBR material). 4096x4096 atlas is fine for 720p resolution (low end phones) and 8192x8192 for 4K.

belgianrenderer.gijskaerts.com•75 days ago

Do you end up storing UVs in your gbuffer at all in that case?

sebaaltonen.bsky.social•75 days ago

Not right now, but that's a plan.

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