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          T H E   A D V A N C E D   R E N D E R I N G   T O O L K I T
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			      K N O W N   B U G S


    INTRODUCTION
	This file gives a list of known bugs, mis-features, and shortcomings
	of ART, and contains also workarounds as far as they are available.

    MIS FEATURES
	all versions
	    GENERAL_SURFACE scene source problem
		if you specify a general Surface, and the terminating weight
		is specified as 0, instead of 0.0 compiling the scene will
		produce:
	    
			make: *** [<filename>.art] Error 139
	
		In order to fix this always use 0.0 as terminating weight,
		e.g.:
		
			GENERAL_SURFACE(
			    0.4, ...
			    0.6, ...
			    0.0);
			    ^^^
    BUGS
    	all versions
	    there seems to be a problem LINUX and egcs.  Currently it shows
	    up in some radiosity scenes: artist crashes.
	    we are trying to pinpoint it, and will check iff gcc-2.8.1 is
	    stable
    
	version <= 0.4.5.1
	    textures are slightly wrong on mips--irix6.5-gcc-a
	    externals do not work on IRIX

	version >= 0.4.1.0
	    ArnFace bug fixed

	version == 0.4.0.7
	    ArnFace does not work, i.e. setting a COMPOUND_FACE breaks a
	    scene e.g. scene/Logos/rftScene.arm

	version <= 0.4.0.4
	    transformed textures do not work.
    
	version <= 0.3.10.4
	    transformation combination/normal calculation bug.  Some
	    scenes exhibit misteriously broken CSG combinations.
	    e.g. scene/Demos/RotondaScene.arm
    
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