Re: [ft] changing the depth of gray for anti-aliasing

[Werner LEMBERG]

> It is a good question whether the "stencil" should be pre-adjusted
> by Freetype2, e.g. by passing to it some kind of "canvas
> gamma/contract ratio" parameter, or it should be postprocessed by
> the rendering system.

The answer is very simple: FreeType won't do this. :-) Maybe it is
necessary to provide additional hooks into FreeType for speed reasons,
but that should be it.

> I suspect that the stencil delivered by Freetype2 is actually
> designed for a specific canvas, because I suspect that the
> anti-aliasing process itself, not just the blending, should
> dependent on the specific background/foregorund colours (especially
> in the case of subpixel rendering).

Since AA handling with FreeType is based on pixel coverage only, it is
not depending on output canvas.


    Werner