Metal: linear texture filtering not working as expected

Question

I\'m using Metal on iOS with the following fragment shader:

constexpr sampler s(coord::normalized,
                    address::clamp_to_zero,
                           


        

Answer 1

It appears linear filtering isn't supported for textures of type MTLPixelFormatRGBA32Float on my device (iPad Pro). When I change to MTLPixelFormatRGBA8Unorm, filtering works as expected.