[vim/vim] GTK4 GUI is slow (Issue #20429)
Foxe Chen
64-bitman created an issue (vim/vim#20429)There is noticable lag when scrolling down or up a file. Especially when my laptop is unplugged (running on battery). Using Vim built with #20324 is much smoother, and consumes roughly 6W of power less, which is a lot.
This is the current GTK4 GUI:
https://github.com/user-attachments/assets/894895b6-9aad-498a-8aa8-da3623d90864
This is #20324:
https://github.com/user-attachments/assets/4bf02b36-e276-4875-bc2c-5b94afc6fd18
Both were tested using same optimized build flags and on battery (same power profile)
I won't open #20324 again, but I will try working on a different PR that is hopefully a bit simpler.
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dezza
dezza left a comment (vim/vim#20429)I'm wondering why not deprecate the software rendering on gtk4. Since gtk4 only have full widget drawing it requires major refactoring which is unlikely.
I believe hwaccel should be enabled by default and sw rendering shouldn't even have a place in the source as it is unusable in that state.
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Foxe Chen
64-bitman left a comment (vim/vim#20429)I'm wondering why not deprecate the software rendering on gtk4. Since gtk4 only have full widget drawing it requires major refactoring to be faster which is unlikely.
I believe hwaccel should be enabled by default and sw rendering shouldn't even have a place in the source as it is unusable in that state.
I plan on removing the cairo code (software rendering path) soon, so that the hwaccel is default
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dezza
dezza left a comment (vim/vim#20429)Good job on the hwaccel btw!
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