[info-performer] glDrawPixels n pfuSaveImage Conflicts

Date view Thread view Subject view Author view

From: faculaganymede (faculaganymede++at++yahoo.com)
Date: 02/18/2005 14:19:07

pfExperts,

It appears when I use glDrawPixels and pfuSaveImage in
draw callback, there's some conflicts. I get the same
image on all frames - frame n is the same as frame 0
(n=0:infinity);

Below is the DrawChannel callback function. Any idea?

// Draw process callback
static void DrawChannel (pfChannel *chan, void *)
{
        int g_width=500;
        int g_height=500;
        char *intensity_img;
        static int frame_num=0;
        char fname[256];

        intensity_img=new char[500*500];

        chan->clear();
    pfDraw ();

        glReadPixels( 0, 0, g_width, g_height, GL_RED,
GL_UNSIGNED_BYTE, intensity_img);

        glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

        glMatrixMode(GL_PROJECTION);
        glPushMatrix();
        glLoadIdentity();
        gluOrtho2D( 0.0, g_width, 0.0, g_height);

        glMatrixMode(GL_MODELVIEW);
        glPushMatrix();
        glLoadIdentity();

        glDrawPixels( g_width, g_height, GL_RED,
GL_UNSIGNED_BYTE, intensity_img);

        glMatrixMode(GL_MODELVIEW);
        glPopMatrix();

        glMatrixMode(GL_PROJECTION);
        glPopMatrix();

        sprintf(fname, "snap_%d.rgb", frame_num);
        pfuSaveImage(fname, 0, 0, g_width, g_height, 0);
        frame_num++;

        if(intensity_img)
                free(intensity_img);
}

=====
Thanks,
faculaganymede

        
                
__________________________________
Do you Yahoo!?
Yahoo! Mail - You care about security. So do we.
http://promotions.yahoo.com/new_mail

Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Fri Feb 18 2005 - 14:19:22 PST