Hi Ivan,
Try this before the code creating the program:
osg::setNotifyLevel(osg::INFO);
Then watch the spew on the console to get some idea of supported
extensions, errors etc ...
Mihai
Ivan Bolčina wrote:
Nvidia 6600 GT, driver is 9.1.3.1
Thanks and bye,
ivan
2007/3/28, Mike Weiblen <[EMAIL PROTECTED]
>:
What
GPU and driver?
-- mew
> -----Original Message-----
> From: [EMAIL PROTECTED]
[mailto:osg-users-
> [EMAIL PROTECTED]
] On Behalf Of Ivan Bolcina
> Sent: Wednesday, March 28, 2007 2:21 PM
> To: osg users
> Subject: Re: [osg-users] How to preload and precompile shader.
>
> It is GLSL.
> It is not first frame problem.
> I dont know what you mean my displaylists?
>
> That is shader init.
>
> mProg = new osg::Program;
> RefPtr<osg::Shader> fragmentShader = new osg::Shader(
> osg::Shader::FRAGMENT );
> mProg->addShader( fragmentShader.get() );
> fragmentShader->loadShaderSourceFromFile(
"data/blackify.frag");
>
> This is my shader.
> uniform float strength;
>
> void main(void)
> {
> gl_FragColor = vec4(1.0,1.0,1.0,strength);
> }
>
>
>
> 2007/3/28, Mike Weiblen <[EMAIL PROTECTED]
>:
>
> Hi,
> What's your GPU/driver? Is your shader GLSL or ARB FP?
> 0.5 second build times are way over anything I've seen. I've
run
> apps
> that rebuild the shaders every frame (not a good idea, but
not
> painful
> either). Why do you think it's the shader; could it be some
other
> 1st-frame setup (eg displaylists) going on?
> Cheers
> -- mew
>
>
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
<mailto:osg-users-
> [EMAIL PROTECTED]> [mailto:osg-users-
> > [EMAIL PROTECTED]
] On Behalf Of Ivan Bolcina
> > Sent: Wednesday, March 28, 2007 8:43 AM
> > To: osg users
> > Subject: [osg-users] How to preload and precompile
shader.
> >
> > Hi.
> >
> > I am using very simple fragment shader and it works
great. But
> there
> is a
> > problem, when I first use ti on scene, it takes about
half a
sec
> to
> > initialize, so my whole app freezes for half a second.
> >
> > I would like to preload fragment shader and precompile
it. Any
> ideas?
> >
> > Bye, ivan
>
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> http://www.openscenegraph.org/
>
>
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