Re: [ft-devel] Experimental: v38 interpreter with minimal backwards compatibility mode and linear advance widths

[Nikolaus Waxweiler]

This is funny. I think I found a way to make bytecode rendering similar 
to the autohinter in smoothness, it even helps making old fonts look 
less ugly. in Ins_MIRP, I added:

    if ( exc->backwards_compatibility && exc->GS.freeVector.x == 0x0 )
    {
      control_value_cutin = control_value_cutin / 2;
      minimum_distance = minimum_distance / 2;
    }

In Ins_MDRP, I added:

    if ( exc->backwards_compatibility && exc->GS.freeVector.x == 0x0 )
    {
      minimum_distance = minimum_distance / 2;
    }

(I know both values are actually FT_F26Dot6 but this works for my 
proof-of-concept)

I'm browsing around the net and on https://typekit.com/fonts and am 
quite pleased with what I see :D

I attached the new full patch again. It sure looks like I have to have a 
harder look at this and find out if I should change more minimum 
distances and CVT cutin values.

Uh, should I push a branch to GitHub?

minimal_v38_interpreter_v2.patch
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