API Notes: Metal framework

Apple documentation

The full API is described in Apple’s documentation, both the C and Objective-C APIs are available (but see the API Notes below).

These bindings are accessed through the Metal package (that is, import Metal).

API Notes


This framework is only available on macOS 10.11 and later.

The full API is available from Python.

-[MTLRasterizationRateLayerDescriptor horizontalSampleStorage]

It is generally safer to use MTLRasterizationRateLayerDescriptor.horizontal instead

-[MTLRasterizationRateLayerDescriptor verticalSampleStorage]

It is generally safer to use MTLRasterizationRateLayerDescriptor.vertical instead


The C type contains an anonymous union. In Python the only attribute is elements (list of 3 floats).


This structure is currently not available from python and needs a manual wrapper.