Hi, thank you for your answer. Now I have a new question.
How can I set the texture environment color? Cheers, Martin -----Ursprüngliche Nachricht----- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Ulrich Hertlein Gesendet: Samstag, 29. November 2008 07:06 An: OpenSceneGraph Users Betreff: Re: [osg-users] TexEnv and BLEND Hi Martin, On 29/11/08 8:46 AM, Martin Großer wrote: > I used an object of osg::TexEnv and the mode "Blend". But I don't know how > the texture color and the object color are combined? > > Mode: add -> object color + texture color > decal -> object color - texture color That would be "subtract"; "decal" modulates color according to texture alpha. > modulate -> object color * texture color > blend -> object color ??? texture color > > Can everybody explain the mode "Blend"?? The long version (and authoritative) is the Red Book (or "man glTexEnv"). The short version (for a RGBA texture) is: C = Cfrag * (1-Ctex) + Cconst * Ctex A = Afrag * Atex Basically, for the color channels, the texture color defines the blend factor between the fragment color (e.g. as determined by lighting or vertex color) and "Cconst", the texture environment color. The texture alpha channel modulates the fragment alpha. Cheers, /ulrich PS: Please don't hijack threads. _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
