iOS 10: cicontext.render() makes transparent areas black

Question

I'm using

ciContext.render(overlayImg, to: pixelBuffer, bounds: bufferFrame, colorSpace: nil)

where overlayImg is an image with transparent areas. Pre-iOS10 this worked as expected, but since iOS 10 the transparent areas are black.

I don't know exactly what changed, but how can I achieve the rendering with transparency again?

Fresnel

Dealing with this same problem - any success? – Airiness

no, unfortunately not :( Would LOVE if you post the solution if you have one... – Fresnel

Post some sample code that I can run, I will try to help you as best as I can. – Wilbertwilborn

@Wilbertwilborn Posted some sample code here where I'm dealing with a similar issue: #45373883 – Airiness

How are you creating your CIContext? – Ronni

have a look at https://mcmap.net/q/826702/-core-image-rendering-a-transparent-image-on-cmsamplebufferref-result-in-black-box-around-it might help – Erdman

Try setting the color space instead of nil – Shiprigged

@Fresnel any update on this? – Shirleeshirleen

please share with the answer :) – Draughtsman

This work for me. #47576663 – Pulque