secondlife / secondlife/viewer

Mac: FXAA/SMAA Severe Performance issue

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#3,828 3 comments 0 reactions 0 assignees View on GitHub

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  • #3889 by @mobserveur — closed without merging
backlog bug team:viewer
Dominant language
C++
Stars
299
Forks
146
Avg merge
1d 9h
Merged PRs (30d)
88

Description

In the latest build, 7.1.12.13550888671 (64bit), enabling FXAA or SMAA divides the performance by 2 on my macbook Pro M2 (it used to have a negligible impact).

https://secondlife.canny.io/admin/board/bug-reports/p/fxaa-smaa-severe-performance-issue-mac-m2

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the performance regression on a MacBook Pro M2 using viewer build 7.1.12.13550888671, with FXAA and SMAA enabled and disabled. Review the linked Canny bug report and pull request 3889 for prior investigation. Done means identifying and correcting the roughly 2x performance loss while preserving the affected anti-aliasing options.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
computer-graphics, performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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