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[Octave-bug-tracker] [bug #44416] Qt toolkit OpenGL could possibly have
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From: |
Rik |
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Subject: |
[Octave-bug-tracker] [bug #44416] Qt toolkit OpenGL could possibly have separate painter thread |
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Date: |
Tue, 03 Mar 2015 22:41:39 +0000 |
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User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:36.0) Gecko/20100101 Firefox/36.0 |
Follow-up Comment #1, bug #44416 (project octave):
Maybe this should become a bug about Qt performance in general. For bug
#44415 I made a patch that happens to print to stderr whenever the OpenGL
context is intialized. I'm attaching it to this bug report as well.
When a window is moved in Qt it seems that the entire plot is re-initialized
every time. This is incredibly wasteful as dragging a window will cause
re-initializations every 10 pixels or so.
I don't see this behavior with FLTK, so it is something about when the Qt
toolkit decides that the Canvas needs a refresh.
(file #33239)
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Additional Item Attachment:
File name: max_texture_size.diff Size:0 KB
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