0001303: copy of TPrimitive retains same glListID

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Category

Severity

Reproducibility

Date Submitted

Last Update

0001303

[Croquet] Jasmine

minor

always

06-02-05 22:04

08-18-05 18:34

Reporter

schwa

View Status

public

Assigned To

Priority

normal

Resolution

fixed

Status

resolved

Summary

0001303: copy of TPrimitive retains same glListID

Description

Copies of TPrimitive retain the same glListID. A problem arises because the OpenGL's display list registry only knows that the original object uses that glListID, not the copy.

An example of a bug that could (and has) occurred:
- make a TCube in a space.
- make a duplicate of it
- delete the original
- wait a render cycle or two (so that OpenGL>>cleanup is called)
- make a TSphere in the space

If you're unlucky, the duplicate cube will start to render as a sphere. This can (has) happened when the newly created sphere ends up using the same glListID as the original and duplicate cubes.

Other unlucky scenarios include rendering with an invalid glListID. Results in this case are probably platform/driver dependent.

Additional Information

Attached Files

TPrimitive-postCopy.st [^] (244 bytes) 06-02-05 22:11

Relationships

Notes
(0001564 - 70 - 70 - 70 - 70 - 70 - 70) schwa 06-02-05 22:12	The attached changeset (TPrimitive-postCopy.st) addresses the problem.

(0002410 - 106 - 106 - 106 - 106 - 106 - 106) schwa 08-18-05 18:32	This was fixed by managing display lists like other OpenGL resources. See the update 0232DisplayListsEtc.

(0002412 - 105 - 105 - 105 - 105 - 105 - 105) schwa 08-18-05 18:33	This was fixed by managing display lists like other OpenGL resources. See the update 0232DisplayListsEtc.

Issue History
Date Modified	Username	Field	Change
06-02-05 22:04	schwa	New Issue
06-02-05 22:11	schwa	File Added: TPrimitive-postCopy.st
06-02-05 22:12	schwa	Note Added: 0001564
08-18-05 18:32	schwa	Note Added: 0002410
08-18-05 18:32	schwa	Status	new => closed
08-18-05 18:33	schwa	Status	closed => resolved
08-18-05 18:33	schwa	Resolution	open => fixed
08-18-05 18:33	schwa	Assigned To	=> schwa
08-18-05 18:33	schwa	Note Added: 0002412
08-18-05 18:34	schwa	Assigned To	schwa =>

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