@@ -25,43 +25,45 @@ func Example_listDevices() {
	}
	printJSON("preferred system default Metal device = ", device)

	fmt.Println("device supports the macOS GPU family 1, version 1 feature set:", device.SupportsFeatureSet(mtl.MacOSGPUFamily1V1))
	fmt.Println("device supports the macOS GPU family 1, version 2 feature set:", device.SupportsFeatureSet(mtl.MacOSGPUFamily1V2))
	fmt.Println("device supports the macOS read-write texture, tier 2 feature set:", device.SupportsFeatureSet(mtl.MacOSReadWriteTextureTier2))
	fmt.Println("device supports the macOS GPU family 1, version 3 feature set:", device.SupportsFeatureSet(mtl.MacOSGPUFamily1V3))
	fmt.Println("device supports the macOS GPU family 1, version 4 feature set:", device.SupportsFeatureSet(mtl.MacOSGPUFamily1V4))
	fmt.Println("device supports the macOS GPU family 2, version 1 feature set:", device.SupportsFeatureSet(mtl.MacOSGPUFamily2V1))

	// Sample output:
	// all Metal devices in the system = [
	// 	{
	// 		"Headless": false,
	// 		"LowPower": true,
	// 		"Removable": false,
	// 		"RegistryID": 4294968304,
	// 		"RegistryID": 4294968287,
	// 		"Name": "Intel Iris Pro Graphics"
	// 	},
	// 	{
	// 		"Headless": false,
	// 		"LowPower": false,
	// 		"Removable": false,
	// 		"RegistryID": 4294968344,
	// 		"RegistryID": 4294968322,
	// 		"Name": "AMD Radeon R9 M370X"
	// 	}
	// ]
	// preferred system default Metal device = {
	// 	"Headless": false,
	// 	"LowPower": false,
	// 	"Removable": false,
	// 	"RegistryID": 4294968344,
	// 	"RegistryID": 4294968322,
	// 	"Name": "AMD Radeon R9 M370X"
	// }
	// device supports the macOS GPU family 1, version 1 feature set: true
	// device supports the macOS GPU family 1, version 2 feature set: true
	// device supports the macOS read-write texture, tier 2 feature set: true
	// device supports the macOS GPU family 1, version 3 feature set: true
	// device supports the macOS GPU family 1, version 4 feature set: false
	// device supports the macOS GPU family 2, version 1 feature set: false
	// device supports the macOS GPU family 1, version 4 feature set: true
	// device supports the macOS GPU family 2, version 1 feature set: true
}

// printJSON prints label, then v as JSON encoded with indent to stdout. It panics on any error.
// It's meant to be used by examples to print the output.
func printJSON(label string, v interface{}) {

@@ -30,15 +30,16 @@ import "C"
// Reference: https://developer.apple.com/documentation/metal/mtlfeatureset.
type FeatureSet uint16

// The device feature sets that define specific platform, hardware, and software configurations.
const (
	MacOSGPUFamily1V1 FeatureSet = 10000 // The GPU family 1, version 1 feature set for macOS.
	MacOSGPUFamily1V2 FeatureSet = 10001 // The GPU family 1, version 2 feature set for macOS.
	MacOSGPUFamily1V3 FeatureSet = 10003 // The GPU family 1, version 3 feature set for macOS.
	MacOSGPUFamily1V4 FeatureSet = 10004 // The GPU family 1, version 4 feature set for macOS.
	MacOSGPUFamily2V1 FeatureSet = 10005 // The GPU family 2, version 1 feature set for macOS.
	MacOSGPUFamily1V1          FeatureSet = 10000 // The GPU family 1, version 1 feature set for macOS.
	MacOSGPUFamily1V2          FeatureSet = 10001 // The GPU family 1, version 2 feature set for macOS.
	MacOSReadWriteTextureTier2 FeatureSet = 10002 // The read-write texture, tier 2 feature set for macOS.
	MacOSGPUFamily1V3          FeatureSet = 10003 // The GPU family 1, version 3 feature set for macOS.
	MacOSGPUFamily1V4          FeatureSet = 10004 // The GPU family 1, version 4 feature set for macOS.
	MacOSGPUFamily2V1          FeatureSet = 10005 // The GPU family 2, version 1 feature set for macOS.
)

// PixelFormat defines data formats that describe the organization
// and characteristics of individual pixels in a texture.
//