RE: [Plib-devel] SSG bux fixes for untextured .3ds objects

[Ben W. <be...@bg...>]

Did anybody resolve this issue yet.

I will take a look at it if you would like.

Dan if you can send me your code and the model you are having problems with,
I will see what  I can do.

Later Ben

-----Original Message-----
From: Dan Gelb [mailto:dg...@hp...]
Sent: Monday, August 14, 2000 2:32 PM
To: pli...@li...
Subject: [Plib-devel] SSG bux fixes for untextured .3ds objects


Last week I posted on plib-users about problems I was having with .3ds
objects
that were not textured.  I figured out a couple changes that solved the
problems
for me, and I'm assuming this is the right place to post them.

1. Non-textured objects show up as white when textured objects drawn before
them.

I started with the tux ssg example program.  One of the textured objects
drawn
sets the GL_EMISSION material values to 1.0,1.0,1.0.  When the .3ds objects
are
drawn without textures it sets the ambient, diffuse, and specular material
properties,
but doesn't set the emissive back to 0.0.  I added a line to
ssgSimpleState::apply
to set it to 0.0 if it isn't specified.  I don't know if this is the correct
place or
not.

2. First non-textured object always shows up as white in scene with or
without textures

I believe this was happening because glDisable(GL_COLOR_MATERIAL) is called
AFTER
the glMaterial calls in ssgSimpleState::apply.  This causes the glMaterial
calls
to be ignored for the first object, but work for subsequent objects.  I
think that is
what happens.  My workaround was to move the ssgDisableTable call to before
the glMaterial calls.

I don't know if either of these is the proper solution, or if they would
break
other areas.  They seemed to work for me though.

Dan

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