CPU usage scales according to window size

[orogenic]

Checklist

• [X] I'm reporting a problem with Chatterino
• [X] I've verified that I'm running the most recent nightly build or stable release
• [X] I've looked for my problem on the wiki
• [X] I've searched the issues and pull requests for similar looking reports

Describe your issue

I am on Linux. I noticed as chatterino window size increases, CPU usage also increases. I ran a few perf records, and at small window sizes, there are no outlier symbols, but at fullscreen on 1920x1080, two symbols in libQt5Gui.so.5 accounted for more than 53% overhead, and two more outlier symbols in libQt5Gui.so.5 account for an additional more than 12% overhead. I don't know how to quickly make debug symbol build of Qt sorry.

I am wondering, does CPU usage necessarily need to scale with window size? The only similar issue I found is #2242 which mentions high GPU usage according to window size. Maybe due to Linux support or some configuration of my machine, some typically GPU-bound task on Windows happens on the CPU instead on Linux? I am running Xorg NVIDIA. I noticed this issue many months ago. Just thought I'd share.

Screenshots

No response

OS and Chatterino Version

Chatterino 2.3.5 (commit 81a62764c) Linux 5.18.12 NVIDIA Driver 515.57

[Brog33]

Same version/commit as original poster - can confirm this is an issue on my setup as well. Ubuntu 20.04 LTS, Intel UHD 620, Xorg.

[pajlada]

We make heavy use of the Qt 2d graphics calls, this uses a software rasterizer. As far as I can tell, there's no toggle for us to switch to a hardware accelerated paint method.

References: https://stackoverflow.com/questions/41179514/qt5-on-imx6-how-to-make-sure-the-hardware-acceleration-is-in-use https://doc.qt.io/qt-5/topics-graphics.html#2d-graphics-with-qpainter

[colinpeddle]

Seeing the same on macOS Monterey 12.6.1 with version 2.4.0 of Chatterino.