Re: Quesa 1.8 broke my app; assertion in E3Set::Add() adding a kQ3AttributeTypeSurfaceShader

[Roger H. <rog...@mi...>]

Hi Sean,

The Null Illumination shader does not inherit from Surface Shader,
it inherits from Shader. Surface Shader also inherits from Shader
but that does not help.

I am not sure you can put one in an attribute set. Can you put them
both in a group and submit that instead?

Roger Holmes.








On 15 May, 2006, at 19:35, Sean McBride wrote:

> Hi all,
>
> Up to recently I've been using Quesa 1.7 from CVS of 2006-03-28.  Now
> I'm trying 1.8 and now my app crashes.  The code is:
>
> 	TQ3ShaderObject	shader =3D Q3NULLIllumination_New();
>
> 	TQ3PolygonData	polygon_data;
> 	polygon_data.numVertices =3D ...;
> 	polygon_data.vertices =3D ...;
> 	polygon_data.polygonAttributeSet =3D Q3AttributeSet_New();
>
> 	Q3AttributeSet_Add( polygon_data.polygonAttributeSet,
>     kQ3AttributeTypeSurfaceShader,
>     &shader );
>
> And then in E3Set::Add() (called by Q3AttributeSet_Add) this =20
> assertion fires:
>
> 	Q3_ASSERT( Q3Object_IsType (
>     setData.attributes.surfaceShader,
> 			 kQ3ShaderTypeSurface ) ) ;
>
> It crashes a few lines later.  I'm not sure if I built 1.7 with
> assertions, but there was no crash then.
>
> Is this not the right way to add a null shader?  Our goal is to add a
> null illumination shader to a polygon object.
>
> Thanks for any advice!
>
> --
> ____________________________________________________________
> Sean McBride, B. Eng                 se...@ro...
> Rogue Research                        www.rogue-research.com
> Mac Software Developer              Montr=E9al, Qu=E9bec, Canada
>
>
>
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