kicad-developers team mailing list archive

["Torsten Hüter" <torstenhtr@xxxxxx>]

Hi Mike,

have a look here:
http://bazaar.launchpad.net/~kicad-testing-committers/kicad/kicad-gal/view/head:/gal/common/graphics_abstraction_layer.h

This is the base class. As application developer you have to know only this class and its methods. The implementation is the job of the GAL implementer; currently I've implemented OpenGL (hardware acceleration) and cairo (software renderer). So both share the same interface. I've also an experimental wxDC implementation; just for evaluation and performance comparision (not yet checked in).
I've tried to make the interface relative simple .. hope that will be a success.

Bye,
Torsten

-------- Original-Nachricht --------
> Datum: Fri, 18 May 2012 09:00:02 +0200
> Von: Miguel Angel Ajo Pelayo <miguelangel@xxxxxxx>
> An: "Torsten Hüter" <torstenhtr@xxxxxx>
> CC: kicad-developers@xxxxxxxxxxxxxxxxxxx
> Betreff: Re: [Kicad-developers] Kicad-gal and OpenGL supported version under Mingw ( was Plotting/fabricating in nanometers)

> Hi Torsten, I'm yet a little bit lost...,
> 
>     so you're building a graphic abstraction layer to run over OpenGL?,
> 
>     That's great, painting over a graphic abstraction layer should make
> things much more simple
> for drawing (when it's done), and we must get much better graphical
> results.
> 
> 
> 
> 2012/5/17 "Torsten Hüter" <torstenhtr@xxxxxx>
> 
> > Hi Jean,
> >
> > no, usually MESA is not required. What you only need is the opengl32.dll
> > and the glu32.dll (e.g. C:\Windows\System32). The graphics card driver
> > should provide the latest versions for these files. The old version of
> the
> > MinGW OpenGL headers is normal, that's the same on my system - the
> purpose
> > of GLEW is to wrap the functions of OpenGL > 1.3.
> > So I'd guess you have an old driver/ a conficting library or headers
> > somewhere. Perhaps OpenGL 2.1 is not supported on your system ( some
> older
> > Intel GMA Chipsets support only < 2.0 ).
> >
> > A nice tool for troubleshooting is "GLview":
> > http://www.realtech-vr.com/glview/download.html
> >
> > There you can check, which extensions are supported.
> >
> > I've found some movies on youtube, which are maybe also helpful:
> >
> > OpenGL 4.2 + MinGW
> > http://www.youtube.com/watch?v=i8XRKBk40VA
> >
> > OpenGL Superbible example (OpenGL 3.3), MinGW:
> > http://www.youtube.com/watch?v=9PbY7SM7P3w
> >
> > --
> >
> > I'll try next week to compile on my notebook (Windows 7 however), I'll
> > check if I run into the same troubles ..
> >
> > Bye,
> > Torsten
> >
> >
> > > I also have trouble with GLEW and POINT.
> > > I just added GLEW in Kicad-gal to compile it with Kicad-gal, and
> renamed
> > > POINT.
> > > (Currently I can run only the Cairo version of demos)
> > >
> > > The issue relative to OpenGL (run time error: opengl version 2.1 not
> > > supported)
> > > is due to the fact MinGw come from a rather old version of OpenGl
> (Mesa
> > > GL, in fact)
> > > (comments in .h headers show a 2002 version) and not an hardware
> issue.
> > > My MinGW installation is a recent version (now including GDIplus).
> > >
> > > So my question is:
> > > Are you using the Opengl libs and headers coming from Mingw,
> > > or have you installed a recent version of MESA GL under Windows?
> > > (Recent Mesa version seems do not have an easy install under
> > > Mingw/Windows)
> > >
> > > Thanks.
> > >
> > > --
> > > Jean-Pierre CHARRAS
> > >
> > >
> > > _______________________________________________
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> 
> 
> 
> -- 
> 
> Miguel Angel Ajo Pelayo
> http://www.nbee.es
> +34 636 52 25 69
> skype: ajoajoajo

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