nehe-tutorial 36 (blurr) works under vc6.0 but NOT under vc7.0 !! how is't possible?

[herc]

i took tutorial 36 about radial blur from http://nehe.gamedev.net/tutorials/lesson.asp?l=36

and it works fine under visual c++ 6.0, but not under visualc++ 7.0 ! how can this happen? i thougth opengl is more or less platform independent and even more compiler version independent.....
strange thing. seems that microsofts opengl-implementation in vc7.0 is buggy .
can anyone help out? i think the problem is located by the frambuffer to texture copy.

[fresh]

Could be a gone generation bug? Did you try building it in debug mode with optimizations turned off?

[J P]

What exactly is the problem. I remeber having found some bugs in radial blur in VC++ 6.0 (don't have VC++ 7). But I think they were windows related.

[zed]

librarys compiled for one version of vc normally aint compatable with another version.
this has got nothing to do with opengl per se ie it happens with any libraries.

[Mihail121]

There is VISUAL C++ 7.0???Where can i read some info about that.Does it have introductionary/standart/professinal/enterprise versions???.Write me a mail about that stuff!

[herc]

sorry for late reply,
i have compiled both in debug mode (no optimizations) and release mode - neither works. i cannot believe this ... i would expect this if i change between win32<->linux, but not between different vc-version....

seems that even in vc7 the gl - header is pretty old:

/*++ BUILD Version: 0004 // Increment this if a change has global effects

Copyright (c) 1985-96, Microsoft Corporation

Module Name:

gl.h

Abstract:

Procedure declarations, constant definitions and macros for the OpenGL
component.

--*/

#ifndef __gl_h_
#ifndef __GL_H__

#define __gl_h_
#define __GL_H__

#ifdef __cplusplus
extern "C" {
#endif

/*
** Copyright 1996 Silicon Graphics, Inc.
** All Rights Reserved.
**
** This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
** the contents of this file may not be disclosed to third parties, copied or
** duplicated in any form, in whole or in part, without the prior written
** permission of Silicon Graphics, Inc.
**
** RESTRICTED RIGHTS LEGEND:
** Use, duplication or disclosure by the Government is subject to restrictions
** as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
** and Computer Software clause at DFARS 252.227-7013, and/or in similar or
** successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
** rights reserved under the Copyright Laws of the United States.
*/
/* Version */
#define GL_VERSION_1_1


so my guess is just a buggy opengl.lib.

[harsman]

You still haven't explained what "doesn't works" means. It doesn't compile, it doesn't link, it doesn't display correctly or what?

[herc]

oh sorry!
it compiles fine, runs fine - but the blur effect is gone in vc7. only the spriral gets drawn. so my assumption is that the framebuffer -> texture copy fails.
but why ?

[opla]

works fine for me. the EXE is 44K instead of 36K, but it's working just fine.

quit smoking man.

[herc]

so - could you please mail me your *.exe (or probably better the complete direc with project files)?
(post@andre-krause.net)
what's your graphics card ? i got ati-radeon ve.. and you visualc++ version ? any updates applied ?