OpenGL-10.4.7 incompatibility

FROM : nestor cardozo
DATE : Fri Jun 30 22:26:15 2006

Okay, I have identified where the problem in my program is:

When I disable lighting my app works fine in 10.4.7 Intel or ppc.

When lighting is enabled the app only works fine in 10.4.7 ppc.

The initialization code for my NSOpenGLView is in the

initWithCoder: method

The code that I use to define lighting within this method is 
something like:

   self = [super initWithCoder:c];
   NSOpenGLContext *glContext;
   glContext = [self openGLContext];
   [glContext makeCurrentContext];

// Lights
   GLfloat ambientLight[] = {intAmbient,intAmbient,intAmbient,1.0};
   GLfloat diffuseLight[] = {intDiffuse,intDiffuse,intDiffuse,1.0};
   GLfloat specular [] = {intSpecular, intSpecular, intSpecular, 1.0};
   GLfloat specref[] = {0.5, 0.5, 0.5, 1.0};

   glEnable(GL_LIGHTING);
   glLightfv(GL_LIGHT0, GL_AMBIENT,ambientLight);
   glLightfv(GL_LIGHT0, GL_DIFFUSE,diffuseLight);
   glLightfv(GL_LIGHT0, GL_SPECULAR, specular);
   glEnable(GL_LIGHT0);
   glEnable(GL_COLOR_MATERIAL);
   glColorMaterial(GL_FRONT,GL_AMBIENT_AND_DIFFUSE);
   glMaterialfv(GL_FRONT,GL_SPECULAR,specref);
   glMateriali(GL_FRONT,GL_SHININESS,50);

   // other stuff
   return self;

As I said when I comment the glEnable (GL_LIGHTING) line, everything 
works fine (except that there are no lights). When I comment the 
glEnable(GL_COLOR_MATERIAL) line everything shows up well but only in 
gray.

The strange thing is that my code works well in 10.4.7 ppc, but not 
10.4.7 Intel.

I have installed the newest 10.4.7 Intel update:

SHA1MacOSXUpd10.4.7Intel.dmg= 10aa57dfccd63accb0939a894cea202a8910fb45

I appreciate any help

Nestor Cardozo