			   Ŀ
			                               
			    Crystal TOPAS Professional 
			                               
 			             READ ME           
 			      Latest News and Notes    
			        13 January, 1993       
			                               
			      CrystalGraphics, Inc.    
			                               
			   



SYSTEM REQUIREMENTS


	PC Compatible with a 486 or 386 (math co-processor strongly
	recommended).

	At least 8MB extended RAM (16MB recommended); 20MB available
	disk space (40MB recommended).

	DOS 3.3 or later.

	Mouse or compatible input device.

	Supports most popular VGA and Super VGA graphics cards.



INSTALLER LICENSE NOTICE


	The installation program used to install this CrystalGraphics
	product, INSTALL, is based on licensed software provided by 
	Knowledge Dynamics Corp, P.O. Box 1558 Canyon Lake, Texas 
	78130-1558 (USA). INSTALL is Copyright (c) 1987-1992 by Knowledge 
	Dynamics Corp which reserves all copyright protection worldwide. 
	INSTALL is provided to you for the exclusive purpose of installing
	Crystal TOPAS Professional. CrystalGraphics, Inc. has modified
	the software as provided by Knowledge Dynamics Corp, and thus
	the performance and behavior of the INSTALL program shipped with
	Crystal TOPAS Professional may not represent the performance
	and behavior of INSTALL as shipped by Knowledge Dynamics Corp.
	CrystalGraphics, Inc. is exclusively responsible for the support
	of Crystal TOPAS Professional, including support during the
	installation phase. In no event will Knowledge Dynamics Corp
	provide any technical support for Crystal TOPAS Professional.

KNOWN BUGS - With Advised Work-Arounds


Bug Symptom:
  Models using high-res images render as mapped with the wrong parts of the
the hi-res image when the "Hi-Res Textures" option is toggled off.
	or
  Models using high-res images show incorrect mapping placement during the
"Show Mapping" and "Edit Maps" functions.

To Fix the Model:
 1) Start the program, or choose the "New" command (Files>Basic). (No model 
	should be in memory.)
 2) Choose the "Picture Load Res." command (Files>Basic) and insure that 
	the option selected is "File Resolution".
 3) Load a high-res image used in the model.
 4) Choose the "Image Display Options" command (Materials>Images).
 5) Select the high-res texture from the scrolling listbox.
 6) Make a note of the value set for "Picture Aspect Ratio" (and note the 
	image name if you are correcting more than one high-res image).
 7) Repeat steps 3 through 6 for any other high-res images exibiting this
	bug.
 Note: if you are unable to load any of your high-res images at file 
  resolution due to memory constraints, you may be able to instead use a
  third-party utility or image processing application to find the aspect
  ratio of the image. Use this value for the value you would have obtained
  in step 6.

 8) Choose the "New" command (Files>Basic) and be sure to answer "Yes" to 
	the "Delete all images from memory?" dialog box.
 9) Load the model. The program should re-load all images.
10) Choose the "Image Display Options" command (Materials>Images).
11) Select one of the high-res images you previously loaded in step 5.
12) Set the "Pixel Aspect Ratio" setting to the value you previously recorded
	for this image in step 6 and be sure to choose "Accept".
13) Repeat steps 10 through 12 for all other high-res images you previously
	loaded in step 5.
14) Save the model. From now on the model should load with the correct 
	settings for high-res textures to work correctly in all situations.


      If you have problems installing the software, refer to your
      installation documentation.

