Am 22.07.2017 um 20:21 schrieb omniverse:

> FYI, note to clipka... your example using blend_mode lacks either keywords color
> or rgb, POV-Ray wants at least one of those in there. Obvious or not, my chance
> to nitpick. ;)

I stand nitpicked indeed ;)

> And something curious going on, I'm not sure about, when I add blend_mode to my
> example; I can't get the same appearance as yours, which seems to remove the
> purple color between blue and red.
> Mine just looks the same no matter what blend_mode is set to. Don't know if it's
> the incremental steps thing, but I also took out the 2nd color and let a single
> color statement do the for loop. No change.

That's because `blend_mode` only controls how POV-Ray interpolates
/between/ individual colour map entries; the entries themselves are
always taken as specified.

Since you're pre-computing some ~250 entries between blue and red,
render-time interpolation is only performed on colours that are very
close anyway, so that `blend_mode` has virtually no effect: Your colour
map is dominated by whatever interpolation formula you have implemented
in SDL, which in this particular case happens to match `blend_mode 0`
(the default).

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