quark cao

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![image](https://user-images.githubusercontent.com/17270069/158290353-8c5f42ac-3dcb-44f8-9689-9914c9b04f84.png) 你那 demo 还跑得起来吗?我这边不改的话会这样报错

i use the latest version, it still happen when i use "pnpm i" to install dependencies, ios is fine, but it will show "Cannot find module '@expo/metro-config'"

it's doesn't make much sence to add a custom filter to konva, which would make konva heavier

I am not sure whether the cmyk convert code is correct, but it seems work ok, but I believe we should test it in detail be merge it

yeah, there algorithm is same to before, and I have change it back. As for the color difference,According to my friend,we need convert the color by icc file.

actually, i can use canvas globalCompositeOperation or webgl to render my own filter, such as an inner shadow function as shown below, but getImageData and putImageData is really a very...

there are two different questions: "What are you trying to do", I want rmI just want the filter api become faster, like this pull request https://github.com/konvajs/konva/pull/1806 "Why don't you use...

@lavrton maybe the new pr is acceptable ? which have no effect on the previous code.

shadows isn't the key, what I mean is, we should use getImageData() as little as possible, becasuse You have to wait a lot of time due to it need to...

> Hi, Were do you use OffscreenCanvas, Can you provide an example? only OffscreenCanvas can be used in webWorker, I need to convert text info into image in webWorker