Reduced model aliasing by increased z-buffer depth (cjlaurel)

macosx/CelestiaOpenGLView.m

@@ -23,10 +23,10 @@
     NSOpenGLPixelFormatAttribute attrs[] = 
     {
         NSOpenGLPFADoubleBuffer,
-        NSOpenGLPFANoRecovery,
-        NSOpenGLPFAAccelerated,
+//        NSOpenGLPFANoRecovery,
+//        NSOpenGLPFAAccelerated,
         NSOpenGLPFADepthSize,
-        (NSOpenGLPixelFormatAttribute)1,
+        (NSOpenGLPixelFormatAttribute)24,
         nil
     } ;
 
@@ -222,16 +222,13 @@
 - (void) drawRect: (NSRect) rect
 {
     NSOpenGLContext *oglContext;
-        [self lockFocus];
     oglContext = [self openGLContext];
     if (oglContext != nil) 
     {
         [controller display];
         glFinish();
         [oglContext flushBuffer];
-
     }
-        [self unlockFocus];
 }
 
 - (void) update