Brian Paul wrote:
>
> Pasi K�rkk�inen wrote:
> >
> > Hello!
> >
> > Are there known blending bugs in the mga-driver (g400)? When I render many
> > additive polygons on the top of each other with small alpha-value
> > (something like 0.05) the result is something it shouldn't be with g400.
> > With software-mesa it's correct as well as with nvidia's drivers.
> >
> > If this is not a known issue, I might do little app that demonstrates
> > this..
>
> I've found that the accuracy of blending isn't always very good on
> some hardware. Not much can be done about that.
>
> -Brian
I doubt it's a problem with the hardware itself. I've done comparisons
with DRI, Utah, XIG, and Win2K G400 drivers - both Utah and DRI produce
poor results with additive blending, whereas the XIG and Windows drivers
look normal. I'll try and assemble some screenshots that demonstrate the
discrepancies.
-Mark
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