348383 - Investigate using GdiSetBatchLimit to improve performance

Status: RESOLVED WONTFIX

(Core :: Graphics, defect)

Description

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

Win32 batches GDI calls up to a certain pre-set limit; we may be able to tweak this limit to improve rendering performance; see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/gdi/pantdraw_8ed0.asp .  However, any functions that don't return boolean values immediately flush, and our various text-handling functions fall into this, so it might not be that useful.

Filing this as a reminder to look into this.

Comment 1

[Jim Mathies [:jimm]]

Is this still a plausible thing to look at Vlad since we switched Cairo? If so I might take it, sounds like it might be interesting.

Comment 2

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

Yep, it is -- we still use GDI heavily through cairo, though we're going to try to get away from it as much as possible in the near future.  Might be interesting to explore this, but the text functions comment still stands.

Comment 3

[Jim Mathies [:jimm]]

never going to get to this. resetting to defaults.

Comment 4

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

And at this point, GDI is becoming a lot less interesting.