Glscene with lazarus svn
lazarus / 39-Graphics

----------------------------------------------------------------------
scrat · 2010-09-12 14:33

Hello

GLScene seems no longer work with the  lazarus svn and freepscal
2.5.1. (linux ubuntu 10.04)

Installation is ok after modified GTKproc / GtkDef in GTK2proc
/GTK2Def.
Examples (megacube) compiles well but there is no rendering in the
glviewer, only the fps is displayed.

is there a patch or a solution

Thanks

----------------------------------------------------------------------
YarUnderoaker · 2010-09-13 17:46

Try last revision of our GLScene
https://sourceforge.net/projects/glscene/
but not release 1.1, it's can't compile in Lazarus.
At least I can now provide support, if there would be problems.

----------------------------------------------------------------------
jeehell · 2010-09-20 19:20

Hi,

I cannot install the latest rev 5044 with Lazarus 0.9.29/FPC 2.4.3
under win 7 XP.
I get the following errors:

QuoteD:\Programmes\Lazarus\components\Glscene\Source\Base\VectorGeomet
ry.pas(1021,11) Error: Function is already declared Public/Forward
"SinCos(const Double,var Double,var Double);"
D:\Programmes\Lazarus\components\Glscene\Source\Base\VectorGeometry.pa
s(1029,11) Error: Function is already declared Public/Forward
"SinCos(const Double,const Double,var Double,var Double);"
D:\Programmes\Lazarus\components\Glscene\Source\Base\VectorGeometry.pa
s(1133,10) Error: Function is already declared Public/Forward
"MinFloat(const Double,const Double):Double;"
D:\Programmes\Lazarus\components\Glscene\Source\Base\VectorGeometry.pa
s(1136,10) Error: Function is already declared Public/Forward
"MinFloat(const Double,const Double,const Double):Double;"
D:\Programmes\Lazarus\components\Glscene\Source\Base\VectorGeometry.pa
s(1145,10) Error: Function is already declared Public/Forward
"MaxFloat(const Double,const Double):Double;"
D:\Programmes\Lazarus\components\Glscene\Source\Base\VectorGeometry.pa
s(1148,10) Error: Function is already declared Public/Forward
"MaxFloat(const Double,const Double,const Double):Double;"
D:\Programmes\Lazarus\components\Glscene\Source\Base\VectorGeometry.pa
s(1388,19) Fatal: There were 6 errors compiling module, stopping

I read somewhere to use compiler directives but no luck with that.

Any idea?
Thanks in advance...
JeeHell

----------------------------------------------------------------------
scrat · 2010-09-27 16:34

Hello YarUnderoaker

I  tested your glscene SVN revision 5190 on Ubuntu 10.04 Fpc 2.5.1 and
Lazarus SVN

In GLScreen.pas i have modified

Code: [Select]if XF86VidModeQueryExtension( vDisplay, @i, @j )=0
by
if not XF86VidModeQueryExtension( vDisplay, @i, @j )

because I had this error message
Quote/lazarus/components/glscene/Source/Platform/GLScreen.pas(325,6)
Error: Incompatible types: got "LongBool" expected "LongInt"

In glviewer.ps i add this uses ==> Gl
because Gl_True et Gl_False  are unknown in
Code: [Select]vsmSync  : glXSwapIntervalSGI(GL_True);
vsmNoSync: glXSwapIntervalSGI(GL_False);

Now Glscene compile.

I have tested a few examples that works after smales changes

In all examples replace
Code: [Select]uses windows, .........................

by

uses
{$ifdef MSWINDOWS}
windows,
{$endif}     

The path for media directory is not at the right place for DemosLCL
and the case is not good for linux.

Example tested and working :

megaglasscube
smoking
volcano
fog
nutsnbolts
manual
camera
demogizmoex
spline
projection after add  gl in uses
heightfield
fxy

Not working
multisampletexture don't work in linux ->api windows
megacube (just a very very little red cube)


Thank's

----------------------------------------------------------------------
hgabor47 · 2010-10-03 19:31

Hi, please let me known, how the solution work. Or perhaps an ubuntu
virtual ISO  I have same problem... and now I have the last messages:


/usr/bin/ld: warning: /home/hgabor47/.lazarus/bin/link.res contains
output sections; did you forget -T?
/usr/lib/fpc/2.4.0/units/i386-linux/gtk1/gtk.o: In function
`GTK_GTK_CHECK_CLASS_TYPE$PGTKTYPECLASS$LONGWORD$$BOOLEAN':
gtk.pp:(.text+0x111): undefined reference to `gtk_type_is_a'
/usr/lib/fpc/2.4.0/units/i386-linux/gtk1/gtk.o: In function
`GTK_GTK_IS_DATA_CLASS$POINTER$$BOOLEAN':
gtk.pp:(.text+0x3bd): undefined reference to `gtk_data_get_type'
/usr/lib/fpc/2.4.0/units/i386-linux/gtk1/gtk.o: In function
`GTK_GTK_IS_PACKER_CLASS$POINTER$$BOOLEAN':
gtk.pp:(.text+0xead): undefined reference to `gtk_packer_get_type'
/usr/lib/fpc/2.4.0/units/i386-linux/gtk1/gdk.o: In function
`GDK_GDK_GET_ROOT_WINDOW$$PGDKWINDOW':
gdk.pp:(.text+0x111): undefined reference to `gdk_root_window'
/usr/lib/fpc/2.4.0/units/i386-linux/gtk1/gdk.o: In function
`GDK_GDK_GET_ROOT_PARENT$$PGDKWINDOW':
gdk.pp:(.text+0x121): undefined reference to `gdk_root_parent'
/usr/lib/lazarus/0.9.28.2/ide/lazarus.pp(129,1) Error: Error while
linking
/usr/lib/lazarus/0.9.28.2/ide/lazarus.pp(129,1) Fatal: There were 1
errors compiling module, stopping


so... i'm tired.

----------------------------------------------------------------------
scrat · 2010-10-04 05:45

Hi

With glscene from this SVN :
http://sourceforge.net/projects/glscene/files/

I have tested with FPC SVN 2.5.1 and Lazarus SVN.
GLscene seems to works after smalls modifications.

Your FPC version is 2.4.1, you can try SVN from freepascal repository

Now I use openglcontext .........

----------------------------------------------------------------------
YarUnderoaker · 2010-10-07 14:11

Hi all.
I suggest you go to our official forum
https://sourceforge.net/apps/phpbb/glscene/index.php
I often visit there.

I have Ubuntu 10.04 AMD64 and FPC 2.4.0. (there GLScene work), but I
can't test FPC 2.5.1. because have small Linux skill and don't not
where it got.