XCode 16 seems to have an issue with stitchable kernels in Core Image which gives build errors as stated in this question. As a workaround, I selected Metal 3.2 as Metal Language Revision in XCode project. It works on newer devices like iPhone 13 pro and above but metal texture creation fails on older devices like iPhone 11 pro. Is this a known issue and is there a workaround? I tried selecting Metal language revision to 2.4 but the same build errors occur as reported in this question. Here is the code where assertion failure happens on iPhone 11 Pro.
let vertexShader = library.makeFunction(name: "vertexShaderPassthru")
let fragmentShaderYUV = library.makeFunction(name: "fragmentShaderYUV")
let pipelineDescriptorYUV = MTLRenderPipelineDescriptor()
pipelineDescriptorYUV.rasterSampleCount = 1
pipelineDescriptorYUV.colorAttachments[0].pixelFormat = .bgra8Unorm
pipelineDescriptorYUV.depthAttachmentPixelFormat = .invalid
pipelineDescriptorYUV.vertexFunction = vertexShader
pipelineDescriptorYUV.fragmentFunction = fragmentShaderYUV
do {
try pipelineStateYUV = metalDevice?.makeRenderPipelineState(descriptor: pipelineDescriptorYUV)
}
catch {
assertionFailure("Failed creating a render state pipeline. Can't render the texture without one.")
return
}