dither_hi         297 3rdparty/libwebp/dsp/upsampling.c       const uint8_t r = multiply(dither_hi(rgba4444[2 * i + 0]), mult);
dither_hi         299 3rdparty/libwebp/dsp/upsampling.c       const uint8_t b = multiply(dither_hi(rgba4444[2 * i + 1]), mult);