This is my opengl initialisation:

Qt Code: 
  1. void GlClass::initializeGL()
  2. {
  3. 	glEnable(GL_TEXTURE_3D);
  4. 	glShadeModel(GL_SMOOTH);							
  5. 	glClearColor(0.0f, 0.0f, 0.0f, 0.5f);				
  6. 	glClearDepth(1.0f);									
  7. 	glEnable(GL_DEPTH_TEST);							
  8. 	glDepthFunc(GL_LEQUAL);								
  9. 	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
  10.  
  11. 	glGenTextures(1, &texture[0]);
  12. 	glBindTexture(GL_TEXTURE_3D, texture[0]);
  13.  
  14.        /* Line 35 */
  15. 	glTexImage3D(GL_TEXTURE_3D, 0, GL_LUMINANCE, 32, 32, 32, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, tekstura);
  16.  
  17. 	glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
  18. 	glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
  19.  
  20. }
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