Re: Non-standard TIFF format?

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#979

From: wisdom
Date: Tue, 11 Aug 1992 16:53

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On a related note, tiff images generated by sgi PhotoRealistic Renderman (and  
possibly any other non-NeXT renderman) are not compatible with NXImage. I had  
to get around this by reading the image into a raw format using non-NeXT  
libraries, then using the 

	-initData:pixelsWide:pixelsHigh:bitsPerSample:etc..etc..etc..

method of the NXBitmapImageRep to make it usable via NXImage. This should be  
fixed due to the fact that PhotoRealistic Renderman will be bundled with 3.0  
and it will not be uncommon to have customers attempting to integrate NeXTs  
with what they are using now for prman.

This is a pretty serious incompatibility for these groups. a 100x100 tiff  
generated from prman on an sgi is viewable from the tiny workspace inspector  
window (though it reports a resolution of 7200x7200). However, try to open it  
in Preview (3.0 supports tiff files) or IconBuilder, and suddenly the systems  
tries to allocate vm for a 7200x7200x32bit image (i.e. *LOCKUP*)!! Icon can  
display these images, but Icon is no longer shipping with 3.0. 

tiffutil -info reports the existence of a field "Subfile Type: (0 = 0x0)", but  
I don't know if this has anything to do with it. BTW, the resolution is  
properly reported. I think I should probably make a bug report on this one, and  
hopefully it will be corrected in a future 3.x release. If not, then this  
subject will most certainly be brought up here again. Does anyone know if this  
is a problem with tiff images generated by all versions of non-NeXT  
PhotoRealistic Renderman (we are using sgi renderman 3.1)?

-Scott Wisdom
wisdom@geom.umn.edu

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From: wisdom@geom.umn.edu
Subject: Re: Non-standard TIFF format?
Message-ID: <1992Aug11.165351.23920@news2.cis.umn.edu>
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Date: Tue, 11 Aug 1992 16:53:51 GMT
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