[Gtkradiant] [Bug 846] depth testing

[gtkradiant@zerowing.idsoftware.com]

http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=846





------- Additional Comments From wjoseph@europe.ea.com  2003-07-29 04:47 -------
In radiant 1.3.x-gtk2 we use GtkGLExt ( http://gtkglext.sourceforge.net ) to 
set up an opengl display context. We ask for a RGBA double-buffered + depth-
buffer context and GtkGLExt handles all the requests for pixelformatdescriptors 
etc on win32. Unfortunately, gtkglext picks the minimum available depth-buffer 
depth asked for.. and by default, it asks for 1 bit. I've now changed this to 
ask for 32, then 24, then 16. Testing on a geforce4, GtkGLExt successfully 
creates the display when asked for 32 bits, and the z-buffer flimmering goes 
away.