clipka schrieb:
> - Image-format input files used immediately in certain language 
> constructs obviously indicating that they are mere data containers (e.g. 
> height fields) shall be exempt from the aforementioned conversion, and 
> the raw encoded values used instead. (Note however that this does not 
> apply to indirect use of input image files.)

It would OTOH be nice if POV-Ray would treat images the same way 
everywhere (it does not in 3.6 either but that's a different story).

> 
> - Non-paletted integer images are kept in "native" format without 
> applying gamma adjustment, in order to save memory. Gamma correction is 
> instead applied at render time, using a pre-computed lookup table in 
> hope of gaining a bit of a speed advantage. (Lookup tables are shared 
> between images with the same gamma curve of course.)

A dynamic caching scheme for converted values would be an alternative - 
significantly more complex to implement of course.

As long as this is only about gamma correction this is probably 
unnecessary but with color space conversions on-the-fly conversion might 
be too expensive.

-- Christoph

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