[info-performer] about opengl call in performer

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From: Allan Schaffer (allan++at++sgi.com)
Date: 05/24/2002 00:19:27


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-------- Original Message --------
Subject: about opengl call in performer
Date: Fri, 24 May 2002 15:15:24 +0900
From: "bumdai" <bumdai++at++grmanet.sogang.ac.kr>
To: <info-performer++at++sgi.com>
CC: "bumdae LEE" <bumdai++at++grmanet.sogang.ac.kr>

hi, performer family

I'm graduate student. and I have just begun performer programming.
I have some confusion. if you know, please reply to me.

========================================================

I want to integrate "OpenGL" code to "Performer".

as you know, you can do camera setting like this,

        pfChanNearFar(chan, 1.0, 10.0);
        pfChanFOV(chan, 60.0f, -1.0f);
        pfChanView((chan, view.xyz, view.hpr);
        pfChanTravFunc(chan, PFTRAV_DRAW, drawHUD);

and in the "drawHUD" function, when I programmed like this,

       glMatrixMode(GL_PROJECTION);
       glPushMatrix();
       glLoadIdentity();
       gluOrtho2D(-x/2, x/2, -y/2, y/2);

       glMatrixMode(GL_MODELVIEW);
       glPushMatrix();
       glLoadIdentity();
       gluLookAt(0.0f, 0.0f, 10.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f);

If I programmed like this, I'm confusing,

Is camera setting with "performer function" disregarded by "gl camera
function" ?
Do "performer function" and "gl function" make problem?

please help me..

-- 
Allan Schaffer                                            allan++at++sgi.com
Engr. Manager, Core Rendering                            1-650-933-2160
Silicon Graphics                                     http://www.sgi.com


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