chrg6
5eef43742d
Compare textures up to 8 MiB by content before uploading them a second time, by default.
...
A texture whose pages show a write is uploaded again unless a hash of its bytes says they are the same. The hash
covered textures up to 64 KiB; for larger ones it was a switch left off until measured in play (tex_same_big). A
run through Hyrule Field measured it (RTX 5090, about three minutes of running): without it 44,000 to 52,000 second
uploads of 33 to 47 GiB of storage in four runs of six, one 1536x1536 texture 29 times within 300 frames with the
same bytes each time, and 66 thousand million texels decoded on the GPU in a run; with it 214 to 592 second uploads,
24 GiB found unchanged, and 20 to 24 thousand million texels decoded, which is the first uploads. The GPU's upload
work fell from 0.41 to 0.14 ms a frame, and the second uploads' 2.9 s of the submitting thread are gone for about
as much hashing.
tex_same_big = 0 hashes only the small ones, as before.
Co-Authored-By: Claude Fable 5.2 <noreply@anthropic.com >
2026-11-14 08:33:06 -05:00
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