metal_context_helper.mm File Reference

#import "metal_context_helper.h"
#import "include/gpu/ganesh/mtl/GrMtlTypes.h"
#import "include/ports/SkCFObject.h"
#import <Metal/Metal.h>

Go to the source code of this file.

Functions
GrMtlBackendContext	GetMetalContext ()

Function Documentation

GetMetalContext()

GrMtlBackendContext GetMetalContext

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Definition at line 15 of file metal_context_helper.mm.

                                      {
    GrMtlBackendContext backendContext = {};
    sk_cfp<id<MTLDevice>> device;
#if defined(TARGET_OS_IPHONE) || defined(TARGET_IPHONE_SIMULATOR)
    device.reset(MTLCreateSystemDefaultDevice());
#else
    sk_cfp<NSArray<id <MTLDevice>>*> availableDevices(MTLCopyAllDevices());
    // Choose the non-integrated CPU if available
    for (id<MTLDevice> dev in availableDevices.get()) {
        if (!dev.isLowPower) {
            device.retain(dev);
            break;
        }
        if (dev.isRemovable) {
            device.retain(dev);
            break;
        }
    }
    if (!device) {
        device.reset(MTLCreateSystemDefaultDevice());
    }
#endif
 
    backendContext.fDevice.retain((GrMTLHandle)device.get());
    sk_cfp<id<MTLCommandQueue>> queue([*device newCommandQueue]);
    backendContext.fQueue.retain((GrMTLHandle)queue.get());
    return backendContext;
}