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] 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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