[PD] Gem: Change blending mode ?

chris clepper cgc at humboldtblvd.com
Mon May 8 22:39:29 CEST 2006

glBlendFunc()  There is a whole section on it in the RedBook.

Fragment shaders are also useful for this.

On 5/8/06, Alexandre Quessy <listes at sourcelibre.com> wrote:
> Hi list,
> I am much playing around with alpha blending in Gem these days and I
> was wondering how I could change the default blending mode between
> geos. I think it is feasable with openGL objects, but there are only
> two openGL examples in the example/help patches.
> The default blending mode between geos is "add". I would like to set
> it to "multiply" in some cases and "mask", so that when we are viewing
> a geo with a pix texture on it, we don't see the other geos' pix
> textures behind it ? I am sure this is possible. How ?
> regards,
> aalex
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