Hi, I am Zoltan Herczeg, the developer of the sljit JIT compiler. I am new to FreeType, but if I understand correctly TrueType hinting is done by a byte-code interpreter (ttinterp). My question is, is it worth to accelerate this process by JIT? I mostly saw simple uint32 computations in the code, which can be translated to sljit instructions (LIR) easily. However, JIT compiling has a considerable overhead, so it is only worth for frequently used code paths (for example sljit is used for accelerating regular expressions and network packet filtering). May I ask the purpose of this interpreter? Is it only used for font loading, or has other purposes? Is the same program runs for all glyphs for the same font (or multiple fonts)? What is the typical program length (number of bytecode instructions)? Do you have any measurements about the ratio of interpreted runtime compared to the total time consumed by freetype?
Regards, Zoltan _______________________________________________ Freetype-devel mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/freetype-devel
