[Lazarus] Lazarus and GLScene, bug in polygon rendering

[Burkhard Carstens]

Am Samstag, 16. Februar 2008 10:29 schrieb tcoq at free.fr:
> Hi all,
>
> I have a bug with GLScene when executing on Windows, compiled with
> Lazarus and FPC.
> GLScene's version is Lazarus', version 1.0.0.2 (Delphi's version's
> needs a lot more fixes to work on Lazarus).
>
> The program is very simple, see attached zip file, basically a
> polygon viewed from above in a GLSceneViewer. When I connect the
> viewer to the camera, the program hangs with a SIGSEGV signal in the
> ialmgicd!DrvSetContext procedure, it seems the GLU library transmits
> back bizarre pointers into the TGLNodes.RenderTesselatedPolygon
> procedure in GLMisc.
> I've printed out a copy of the values in the GLSceneDebug.Text file.
>
> Needless to say, the same code work perfectly with Delphi7 and the
> latest stable GLScene.

I just learned "it's pure luck" that/if it works .. I'll submit a patch 
to original glscene as soon as you confirm the fix. ( I don't have 
windows to test, however in linux your test program works now ) 

>
> Has anyone seen this before and could help with information to debug
> this?

fixed in svn.

regards
 Burkhard