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IDProjectCategoryView StatusLast Update
0002676CommunityOCCT:Visualizationpublic2006-06-29 09:15
Reporterbugmaster Assigned Toskt 
PrioritynormalSeveritytrivial 
Status closedResolutionunable to reproduce 
OSAll 
Summary0002676: The possible reason for flickering
DescriptionBuf from Open CASCADE Community
Bug has been registered by fhchina

With MFC Sample shipped with OCC4.0 and my application, and Stephane's exoTCAD,
all those applications will flickering when:
1. sizing.
2. partial erase(caused by other application overlap or after displaying a
dialog), then call V3d_View->Redraw in OnDraw, it filckering.

I have override Message Handler WM_ERASEBACKGROUND, return TRUE , no use.
I have compiled some MFC MDI applications which use direcly OpenGL, it runs very
well, no black screen, no flickering.

So I suspect the reason is in OpenGl package of OCC. It may incorrectly mix the
wgl and GDI calling.

Additonal information:

Author: fhchina
Date: 09-11-02 22:49
Project: Flickering when sizing and partial erase

I found the whole scene of OCC Viewer is redraw twice when sizing by using a
very `large' model! This is a common reason for any grphics code which flickers.
TagsNo tags attached.
Test case number

Activities

bugmaster

2005-03-02 15:52

administrator   ~0006438

It is not reproduced on development version

Bugmaster

Issue History

Date Modified Username Field Change
2003-05-16 11:15 bugmaster Assigned To bugmaster => vtn
2003-05-16 11:15 bugmaster Status new => assigned
2004-12-30 11:28 bugmaster Customer =>
2005-01-12 16:45 bugmaster Assigned To vtn => san
2005-01-27 09:00 san Assigned To san => skt
2005-03-02 15:52 bugmaster Status assigned => closed
2005-03-02 15:52 bugmaster Fixed in Version => 5.2.2
2005-03-02 15:52 bugmaster Resolution @0@ => unable to reproduce
2011-08-02 11:24 bugmaster Category OCCT:VIZ => OCCT:Visualization