I'm curious, why C2 didn't include getImageData () method? it has a lot of benefits like change sprite color, distorsion, pixel manipulation, URL, etc. without need for webGL effects.
Because WebGL is buggy for mobiles.
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getImageData is incredibly slow. If you use it every tick on a mobile device you could easily end up with <5 FPS.
WebGL works great on the devices we've got. What bugs are you referring to specifically?