3 ms·
libpng, to name one example off the top of my head. It doesn't even have support for SIMD on x86 yet, in 2018.
by pcwalton 8y ago
libpng, to name one example off the top of my head. It doesn't even have support for SIMD on x86 yet, in 2018.
- hinkley 8y agolibpng should be theoretically capable of using one and a half cores per image decode. But unfortunately one of the compression techniques in the spec introduces a hazard between each line of the image, because the pixels at x-1 and y-1 are used to predict the value of next pixel. If that algorithm is used it would take some very interesting math to decode multiple lines in parallel.