[Bug 47689] New: When DirectWrite rendering is enabled in Notepad++ performance is inacceptable
https://bugs.winehq.org/show_bug.cgi?id=47689 Bug ID: 47689 Summary: When DirectWrite rendering is enabled in Notepad++ performance is inacceptable Product: Wine Version: unspecified Hardware: x86 OS: Linux Status: UNCONFIRMED Severity: normal Priority: P2 Component: -unknown Assignee: wine-bugs(a)winehq.org Reporter: kolan_n(a)mail.ru Distribution: --- [Notepad++](https://github.com/notepad-plus-plus/notepad-plus-plus) is an application based on Scintilla. Scintilla is a library for creating textareas. [DirectWrite](https://docs.microsoft.com/en-us/windows/win32/directwrite/direct-write-port...) is an API for text rendering with subpixel antialiasing which can be hardware-accelerated using Direct2D. [SCI_SETTECHNOLOGY](https://www.scintilla.org/ScintillaDox.html#SCI_SETTECHNOLOGY) is a enum value identifying a call to Scintilla (in fact it is done using Windows messages). When it is set to values > 0 (SC_TECHNOLOGY_DIRECTWRITE, SC_TECHNOLOGY_DIRECTWRITERETAIN, or SC_TECHNOLOGY_DIRECTWRITEDC), Scintilla uses DirectDraw accelerated via Direct2D for rendering instead of an own surrogate. In Windows >7 everything works fine. In Wine performance is damn bad - single screen update takes several seconds. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=47689 Ken Sharp <imwellcushtymelike(a)gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEEDINFO Ever confirmed|0 |1 --- Comment #1 from Ken Sharp <imwellcushtymelike(a)gmail.com> --- And what version are you using? What logs have you provided? -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=47689 KOLANICH <kolan_n(a)mail.ru> changed: What |Removed |Added ---------------------------------------------------------------------------- Version|unspecified |4.14 --- Comment #2 from KOLANICH <kolan_n(a)mail.ru> ---
And what version are you using?
Wine-staging, the one in apt repos. Likely 4.14. [NPP 4.7.1 64-bit.](https://notepad-plus-plus.org/repository/7.x/7.7.1/npp.7.7.1.bin.x64.7z)
What logs have you provided?
I haven't provided any logs yet. I don't expect them to be helpful in a performance issue, one fixing it still have to do debugging on real software. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=47689 KOLANICH <kolan_n(a)mail.ru> changed: What |Removed |Added ---------------------------------------------------------------------------- Hardware|x86 |x86-64 -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=47689 --- Comment #3 from Nikolay Sivov <bunglehead(a)gmail.com> --- (In reply to Ken Sharp from comment #1)
And what version are you using? What logs have you provided?
Please try to be polite, it's the least you can do for people taking time to report issues. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=47689 --- Comment #5 from KOLANICH <kolan_n(a)mail.ru> --- Created attachment 67635 --> https://bugs.winehq.org/attachment.cgi?id=67635 Video, showing the problem -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=47689 --- Comment #6 from KOLANICH <kolan_n(a)mail.ru> --- Now the plugin is not needed and the feature of enabling DirectWrite is in npp itself. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=47689 --- Comment #7 from Nikolay Sivov <bunglehead(a)gmail.com> --- (In reply to KOLANICH from comment #6)
Now the plugin is not needed and the feature of enabling DirectWrite is in npp itself.
Is it starting with Notepad++ 7.8.8? With 5.11 you should see some improvement in performance, due to cmap access reimplementation. It's possible it's not enough, and unfortunately last time I tested (with 7.8.6), scintilla dwrite backend is poorly optimized itself - it using text layout API, which is meant more for static or rarely updated text, rather than text editors. Basically what happens is that layout object has to be recreated on every text change, and they seem to recreate it even more often. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=47689 --- Comment #8 from KOLANICH <kolan_n(a)mail.ru> ---
Is it starting with Notepad++ 7.8.8?
Yes.
With 5.11 you should see some improvement in performance, due to cmap access reimplementation.
I have tested, yeah, there is some improvement ("waves" of redrawing now move faster), but scrolling is still inacceptably slow :(
scintilla dwrite backend is poorly optimized itself - it using text layout API, which is meant more for static or rarely updated text, rather than text editors. Basically what happens is that layout object has to be recreated on every text change, and they seem to recreate it even more often.
Could you, please, create an issue in the NPP GitHub repo, and maybe in Scintilla bug tracker, about it? -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=47689 --- Comment #9 from Nikolay Sivov <bunglehead(a)gmail.com> --- Sorry, I don't have time for that right now, and I didn't do proper profiling either. Can only tell what I learned from the logs and their code. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=47689 Ken Sharp <imwellcushtymelike(a)gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |performance, source Severity|normal |minor --- Comment #10 from Ken Sharp <imwellcushtymelike(a)gmail.com> --- Please retry in Wine 8.4 or later. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
https://bugs.winehq.org/show_bug.cgi?id=47689 Joan <sam(a)roque-worcel.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |sam(a)roque-worcel.com --- Comment #11 from Joan <sam(a)roque-worcel.com> --- I think this issue has been resolved by this patch by Notepad++ developers: https://github.com/notepad-plus-plus/notepad-plus-plus/commit/975d29b30bfd62... I've tested this issue in latest wine and N++ 8.6.4 and it is no longer present. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.
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