Re: [info-performer] polygonOffset per node example

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From: Goncalo Carvalho (g.carvalho++at++gsa.ac.uk)
Date: 06/04/2003 00:56:43

pfHey,

> => Is there a simple example, how to use glPolygonOffset together with Performer
> nodes?
>

Specify a preDraw and a postDraw callback for the node.

glPolygonOffset can be used in the following way:

static int PreDraw( pfTraverser *, void *data )
{
          glPolygonOffset( -0.5f, -0.000001f );
          glEnable( GL_POLYGON_OFFSET_FILL );

        return( PFTRAV_CONT );
}

static int PostDraw( pfTraverser *, void *data )
{
        glDisable( GL_POLYGON_OFFSET_FILL );
        
        return( PFTRAV_CONT );
}

Cheers,

Goncalo 

-- 
Goncalo Carvalho
Digital Design Studio - Glasgow School of Art
House for an Art Lover - Bellahouston Park
10 Dumbreck Road 
Glasgow G41 5BW
United Kingdom

Tel:	+44 (0) 141 353 4616
Fax:	+44 (0) 141 353 4422
Mobile:	+44 (0) 7766 295867
mailto:g.carvalho++at++gsa.ac.uk

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