Re: [Maya2osg-users] Winding again!

[Javier T. <jav...@gm...>]

  Hi all,

  At least I have some time again to deal with Maya2OSG...  :)

On Sat, Oct 22, 2011 at 8:43 PM, PP CG <pp...@cg...> wrote:

>  Hi, found the place ( code ) of confusion, Line 281 in Mesh.cpp
>
>     // Revert normals if opposite (needed for correct lihgting when using
> FFP)
>     // If we are using GLSL instead of FFP, we do not reverse the normals
> because
>     // it is already done in the shader
>     bool reverse_normals = !Config::instance() -> getArgBool( "-useGLSL" )
> && !doubleSided(mDagPath.node()) && opposite(mDagPath.node());
>     float normalDirection = ( reverse_normals ? -1.0f : 1.0f ) ;
>
> What to do about it ? I think we should keep the setting, but need to
> switch the culling ( backface, frontface ) as well, and that shoud fix J-S
> issue, right ?
>

  This is how I left this code, and AFAIK it should be working OK. I don't
really know the meaning of the "flip normals if surface mode is
opposite" option, that I can see in current trunk is not present anymore.

  As I said, I think it is working OK right now. The test model I use is the
one in "tests/project/scenes/test_geometry.ma". It has all the combinations
of single/double/opossite and smooth and hard edges and so on... I tested it
with FFP and GLSL shaders and the look is just as seen in the Maya viewport.

  @J-S: Can you test if the problem you detected still exists and in such
case could you add an example of your offending geometry to the "
test_geometry.ma" test model so we can use it for fixing the problem and
keep it for future tests?


  Regards,

-- 
Javier Taibo