[Mesa3d-dev] [ mesa3d-Bugs-441859 ] glColorMaterial fails with strips

[<no...@so...>]

Bugs item #441859, was opened at 2001-07-16 17:58
You can respond by visiting: 
http://sourceforge.net/tracker/?func=detail&atid=100003&aid=441859&group_id=3

Category: mesa-core
Group: Rendering Error
Status: Open
Resolution: None
Priority: 5
Submitted By: Michael Saunders (rms7326)
Assigned to: Nobody/Anonymous (nobody)
Summary: glColorMaterial fails with strips

Initial Comment:
Using glColorMaterial(GL_FRONT_AND_BACK,
GL_AMBIENT_AND_DIFFUSE) in conjunction with
GL_QUAD_STRIP blocks does not always color/light the
surface correctly. The first few strips shade well and
then suddenly the strip turns black. This occurs only
when lighting is used. If we turn lighting off the
strips are colored correctly. We noticed that if we
deliver a color at each vertex then glColorMaterial
seems to track lighting correctly.

I should note that this problem occurs on Intel Linux
2.2 machine but not on our Solaris 7 machine. One
difference between the two builds is that I compiled
the Solaris 7 platform so that it did not use the Sparc
ASM code (i.e. USE_SPARC_ASM is commented out in conf.h
because it won't compile otherwise). So I suppose it is
possible that the problem is in that or other platform
specific code (including the graphics card I suppose).
Our linux machine has a GForce 2 Ulta.

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