0007928: Forum 7411: Improved display lists management for the trihedron display - MantisBT

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ID

Project

Category

View Status

Date Submitted

Last Update

0007928

Community

[OCCT] OCCT:Visualization

public

2005-01-31 07:59

2014-11-10 12:18

Reporter

san

Assigned To

bugmaster

Priority

normal

Severity

feature

Status

closed

Resolution

fixed

Platform

OS

All

OS Version

Product Version

Target Version

[OCCT] 6.8.0

Fixed in Version

[OCCT] 6.8.0

Summary

0007928: Forum 7411: Improved display lists management for the trihedron display

Description

This improvement has been reported by Open Source community user Sangsu Lee on
the Forum, see thread 7411:

http://www.opencascade.org/org/forum/thread_7411 [^]

The idea is not to re-create display lists for drawing trihedron arrows each
time a 3D view is updated.
Instead, a map-like behavior could be implemented (unfortunately, available
object-oriented map implementations cannot be re-used in C code of OpenGl
package), with an OpenGL rendering context (GLRC) ID being a key, and a
structure containing current geometrical trihedron parameters and current
display list ID(s) being a data.

When some of trihedron's geometrical parameters changes for the given GLRC,
corresponding display lists could be replaced with new ones, and old ones
deleted.

During view updates, existing display lists could be re-used, with help of
their IDs taken from the map.

On 3D view destruction, it is necessary to take care of removing trihedron data
for relevant GLRC.

Original posting:

-----------------------
Sangsu Lee:

To OCC developers,

I think this code can be improved.
If we make the display lists only when it is made at first or user redefine the
triedron, and just call the lists when redrawing, and destroy it in the
v3d_viewer's destructor, it would be more fast and efficient.

Currently, it is always recreated and deleted again and it is not so efficient.

Tags

No tags attached.

Test case number

Relationships

related to	0007726	closed		Community	Forum 7411: Memory leak with the trihedron display
related to	0024291	closed	apn	Open CASCADE	Visualization - move Z-buffer trihedron presentation from TKOpenGl to TKV3d
related to	0023484	closed	bugmaster	Open CASCADE	Visualization, TKOpenGl - primitive arrays to become the only way to render geometry
related to	0025162	closed	bugmaster	Open CASCADE	Visualization, TKOpenGl - drop GLU library dependency

Notes
(0034159) kgv (developer) 2014-11-07 15:09 edited on: 2014-11-07 15:10	Dear bugmaster, please close the issue - original problem in description does not exist anymore. Since 0024381 trihedron uses OpenGl_PrimitiveArray for rendering primitives, so resources are now re-used without display lists.

Issue History
Date Modified	Username	Field	Change
2005-03-10 09:13	bugmaster	Assigned To	bugmaster => san
2005-03-10 09:13	bugmaster	Status	new => assigned
2005-03-21 10:23	san	Assigned To	san => skt
2010-07-01 11:39	bugmaster	groupset1	=> 4096
2010-07-01 11:39	bugmaster	Customer	=> Community
2011-04-07 18:10	bugmaster	Assigned To	skt => apl
2011-08-02 11:24	bugmaster	Category	OCCT:VIZ => OCCT:Visualization
2012-02-06 08:25	abv	Relationship added	related to 0007726
2012-10-23 10:32	kgv	Relationship added	related to 0023484
2012-10-23 10:47	abv	Fixed in Version	EMPTY =>
2012-10-23 10:47	abv	Target Version	=> 6.6.0
2012-10-23 10:47	abv	Description Updated	View Revisions
2013-02-26 18:44	san	Target Version	6.6.0 => 6.7.0
2013-11-06 14:51	kgv	Target Version	6.7.0 => 6.7.1
2014-02-05 14:52	kgv	Relationship added	related to 0024291
2014-04-04 18:16	abv	Target Version	6.7.1 => 6.8.0
2014-09-24 15:05	kgv	Relationship added	related to 0025162
2014-10-29 13:59	kgv	Target Version	6.8.0 => 7.1.0
2014-11-07 15:09	kgv	Note Added: 0034159
2014-11-07 15:09	kgv	Assigned To	apl => bugmaster
2014-11-07 15:09	kgv	Status	assigned => feedback
2014-11-07 15:09	kgv	Resolution	open => fixed
2014-11-07 15:09	kgv	Fixed in Version	=> 6.8.0
2014-11-07 15:09	kgv	Target Version	7.1.0 => 6.8.0
2014-11-07 15:10	kgv	Note Edited: 0034159	View Revisions
2014-11-10 12:18	bugmaster	Status	feedback => closed

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