Gouraud / Phong

[M.Clarkson]

Well,
	I have had to replies to my previous mail, telling me
that OpenGL, and other hardware graphics platforms do not
support Phong shading.

So in effect you get Gouraud.

Many thanks to those who replied!

Matt


>>>From owner-vtkusers at gsao.med.ge.com Wed Aug  4 08:53 BST 1999
>>>X-Authentication-Warning: gsao.med.ge.com: mjordomo set sender to owner-vtkusers at gsao.med.ge.com using -f
>>>From: Jan Ehrhardt <ehrhardt at medinf.mu-luebeck.de>
>>>To: "M.Clarks"VTK.Mailing.List" <vtkusers at gsao.med.ge.com>"@gwsun.medinf.mu-luebeck.de
>>>Subject: Re: Gouraud / Phong
>>>Date: Wed, 4 Aug 1999 09:41:56 +0200
>>>MIME-Version: 1.0
>>>Content-Transfer-Encoding: 8bit
>>>
>>>Hi,
>>>
>>>I have the same problem, using SGi or Mesa.
>>>Furthermore I have used the RIBExporter, but in the
>>>rendered BMRT-images I can also see no difference.
>>>And a diff between the rib-files exported with 
>>>SetInterpolationToPhong and SetInterpolationToGouraud
>>>shows no difference.
>>>If I use flat shading I can see the difference and a diff
>>>between the files shows other Normals for the Polygons.
>>>
>>>Jan
>>>
>>>On Tue, 03 Aug 1999, you wrote:
>>>>Hi Everyone,
>>>>	I am running some simple tests.
>>>>
>>>>I am simply rendering rather coarse sphere's
>>>>and using Phong and Gouraud shading.
>>>>
>>>>I cant seem to tell the difference.
>>>>
>>>>I am using a Sun Ultra 10 with Elite 3D graphics card.
>>>>
>>>>I have linked Sun's OpenGl libraries.  Are they
>>>>correctly implemented?  Am I missing the point?
>>>>
>>>>The spheres definitely have normals!
>>>>
>>>>Any ideas would be gratefully received.
>>>>
>>>>Matt Clarkson,
>>>>
>>>>Computational Imaging Science Group Tel: 0171 955 2380                      
>>>>Radiological Sciences,              Fax: 0171 955 4532                      
>>>>Guy's Hospital                      E-mail: m.clarkson at umds.ac.uk              
>>>>London Bridge                       WWW: http://carmen.umds.ac.uk/m.clarkson
>>>>London                                                                      
>>>>SE1 9RT   
>>>>
>>>>
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