Kein-Hong Man wrote:
Robert Roessler wrote:
Neil Hodgson wrote:
Robert Roessler:
2) is the Pango/GTK on Windows combo doomed?
Do you read Federico Mena Quintero?
http://primates.ximian.com/~federico/news-2005-10.html
Don't know if any of the optimizations have made it to a GTK+
release or onto the Windows port.
A current summary of my (superficial?) performance investigations:
[snip]
I thought this was normal (that Win32 GTK+ apps have a different kind of
responsiveness.) The whole GTK+ kaboodle is a pretty large library, and
it is another layer sitting on top of Win32. Redraw definitely behaves
differently compared to Win32 native apps. Try this on any big GTK+ app
on Win32: GIMP and Inkscape are all a little less than crisply
responsive, and processor usage usually spike quite high when large
redraws are needed. Scrolling say, an Inkscape tutorial causes processor
usage to shoot up pretty easily.
I sometimes wonder about this headlong rush to get out from under the
thumb of the Evil Empire... ;) One of the costs seems like we are not
getting to have as much [peppy] interface fun and GUI goodness as we
should, even though processors, memory, graphics, and disks are faster
than ever... I am still bummed about SeaMonkey [Windows] builds
quitting using GdiPlus around 10 weeks ago - while I do not have a
good sense of what their rendering architecture looks like now, I do
think that screen update performance took a nose-dive at that point.
Yeah, GTK+ on Win32 probably can do with some more optimization, but I
see this as primarily a GTK+ on Win32 issue, not a real problem with
Scintilla/SciTE. Improving GTK+ on Win32 will benefit all apps that use
it; modifying Scintilla/SciTE seems like a short-term fix.
Philosophically, your point is hard to argue against... OTOH, I have
some clues how Scintilla works (no comments from Neil), so the problem
is a bit more tractable. But I have pretty much exhausted approaches
based on Scintilla enhancements... not that there aren't any to be
made, but I think any inefficiencies in Scintilla text rendering are
dwarfed by the GTK+ on Win32 implementation.
But then that is how the performance-oriented optimization game works
- you take care of the worst offender(s), and then next tackle the
former #2 or #3 performance-sapping areas of code (which is exactly
what the account of the Pango speed enhancements talks about). :)
Robert Roessler
[EMAIL PROTECTED]
http://www.rftp.com
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