Is it possible to pass MTLTexture to Metal Core Image Kernel? How can Metal resources be shared with Core Image?
You can simply initialize a CIImage with the texture and pass that to the kernel:
let ciImage = CIImage(mtlTexture: texture)
The documentation also mentions what you need to do to let Core Image render into a Metal texture.
If you want to incorporate a Metal processing step into a Core Image pipeline instead, I recommend you check out CIImageProcessorKernel.
I think in this case, CIContext may also need to be initialised with metalDevice, correct?
Correct. But it also creates a Metal context by default if you just use CIContext(). You would need to have a Metal-based context anyways if you want to use Metal Core Image kernels.
You can simply initialize a CIImage with the texture and pass that to the kernel:
let ciImage = CIImage(mtlTexture: texture)
The documentation also mentions what you need to do to let Core Image render into a Metal texture.
If you want to incorporate a Metal processing step into a Core Image pipeline instead, I recommend you check out CIImageProcessorKernel.
I think in this case, CIContext may also need to be initialised with metalDevice, correct?
Correct. But it also creates a Metal context by default if you just use CIContext(). You would need to have a Metal-based context anyways if you want to use Metal Core Image kernels.