-// Copyright 2019 The Chromium Authors. All rights reserved.
+// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import <Metal/Metal.h>
#include "base/logging.h"
-#include "base/mac/scoped_nsobject.h"
namespace metal {
-MTLDevicePtr CreateDefaultDevice() {
+id<MTLDevice> GetDefaultDevice() {
// First attempt to find a low power device to use.
- base::scoped_nsprotocol<id<MTLDevice>> device_to_use;
- base::scoped_nsobject<NSArray<id<MTLDevice>>> devices(MTLCopyAllDevices());
- for (id<MTLDevice> device in devices.get()) {
- if ([device isLowPower]) {
- device_to_use.reset(device, base::scoped_policy::RETAIN);
- break;
+#if BUILDFLAG(IS_MAC)
+ for (id<MTLDevice> device in MTLCopyAllDevices()) {
+ if (device.lowPower) {
+ return device;
}
}
+#endif
// Failing that, use the system default device.
- if (!device_to_use)
- device_to_use.reset(MTLCreateSystemDefaultDevice());
- if (!device_to_use) {
+ id<MTLDevice> system_default = MTLCreateSystemDefaultDevice();
+ if (!system_default) {
DLOG(ERROR) << "Failed to find MTLDevice.";
- return nullptr;
+ return nil;
}
- return device_to_use.release();
+
+ return system_default;
}
} // namespace metal