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Force all adapters to report min buffer alignment of 32 #3262

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Wumpf
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@Wumpf Wumpf commented Dec 5, 2022

Checklist

  • Run cargo clippy.
  • Run RUSTFLAGS=--cfg=web_sys_unstable_apis cargo clippy --target wasm32-unknown-unknown if applicable.
  • Add change to CHANGELOG.md. See simple instructions inside file.

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Description

This follows up on the WebGPU spec which doesn't allow an api to report less than 32 bytes buffer alignment.
(brought up on Matrix https://matrix.to/#/!XFRnMvAfptAHthwBCx:matrix.org/$YbQEfpuY-nNlZWNGexna4w0pHa_ItGlm0oHlPvrC5Ds?via=matrix.org&via=mozilla.org&via=kyju.org)

Testing

Ran some sample applications with this

wgpu-hal/src/lib.rs Outdated Show resolved Hide resolved
wgpu-hal/src/dx11/adapter.rs Outdated Show resolved Hide resolved
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codecov-commenter commented Dec 5, 2022

Codecov Report

Merging #3262 (dd7a5ea) into master (6f4ec4f) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #3262      +/-   ##
==========================================
+ Coverage   64.11%   64.14%   +0.03%     
==========================================
  Files          86       86              
  Lines       42560    42572      +12     
==========================================
+ Hits        27286    27308      +22     
+ Misses      15274    15264      -10     
Impacted Files Coverage Δ
wgpu-core/src/instance.rs 65.67% <100.00%> (+0.56%) ⬆️
wgpu-core/src/hub.rs 60.67% <0.00%> (-0.16%) ⬇️
wgpu-core/src/device/mod.rs 66.77% <0.00%> (+0.09%) ⬆️
wgpu/src/backend/direct.rs 56.78% <0.00%> (+0.28%) ⬆️

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@Wumpf Wumpf force-pushed the fix-buffer-alignments-lower-than-32 branch from 221f32f to b787007 Compare December 17, 2022 20:24
@Wumpf Wumpf requested a review from cwfitzgerald December 17, 2022 20:24
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Wumpf commented Dec 17, 2022

@cwfitzgerald apologies for the hiatus!
Solved it completely differently now - the modified callsite seems to be a chokepoint through which adapter limits from hal will go through, so seems like a better place to enforce this the limit

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Thanks!

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Merge conflicts

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Wumpf commented Dec 21, 2022

resolved

wgpu-core/src/instance.rs Outdated Show resolved Hide resolved
@teoxoy teoxoy added this to the WebGPU Specification V1 milestone Dec 21, 2022
@Wumpf Wumpf force-pushed the fix-buffer-alignments-lower-than-32 branch from 2de272b to 8e5a635 Compare December 21, 2022 18:36
@cwfitzgerald cwfitzgerald merged commit eaa87ba into gfx-rs:master Dec 21, 2022
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5 participants