winemac.drv: Give Apple GPUs device IDs.

dlls/winemac.drv/cocoa_display.m

@@ -257,6 +257,37 @@ static int macdrv_get_gpu_info_from_registry_id(struct macdrv_gpu* gpu, uint64_t
 }
 
 /***********************************************************************
+ *              macdrv_get_gpu_info_from_mtldevice
+ *
+ * Get GPU information from a Metal device that responds to the registryID selector.
+ *
+ * Returns non-zero value on failure.
+ */
+static int macdrv_get_gpu_info_from_mtldevice(struct macdrv_gpu* gpu, id<MTLDevice> device)
+{
+    int ret;
+    if ((ret = macdrv_get_gpu_info_from_registry_id(gpu, [device registryID])))
+        return ret;
+    /* Apple GPUs aren't PCI devices and therefore have no device ID
+     * Use the Metal GPUFamily as the device ID */
+    if (!gpu->device_id && [device respondsToSelector:@selector(supportsFamily:)] && [device supportsFamily:MTLGPUFamilyApple1])
+    {
+        MTLGPUFamily highest = MTLGPUFamilyApple1;
+        while (1)
+        {
+            /* Apple2, etc are all in order */
+            MTLGPUFamily next = highest + 1;
+            if ([device supportsFamily:next])
+                highest = next;
+            else
+                break;
+        }
+        gpu->device_id = highest;
+    }
+    return 0;
+}
+
+/***********************************************************************
  *              macdrv_get_gpus_from_metal
  *
  * Get a list of GPUs from Metal.
@@ -289,7 +320,7 @@ static int macdrv_get_gpus_from_metal(struct macdrv_gpu** new_gpus, int* count)
      * the primary GPU because we need to hide the integrated GPU for an automatic graphic switching pair to avoid apps
      * using the integrated GPU. This is the behavior of Windows on a Mac. */
     primary_device = [MTLCreateSystemDefaultDevice() autorelease];
-    if (macdrv_get_gpu_info_from_registry_id(&primary_gpu, primary_device.registryID))
+    if (macdrv_get_gpu_info_from_mtldevice(&primary_gpu, primary_device))
         goto done;
 
     /* Hide the integrated GPU if the system default device is a dedicated GPU */
@@ -301,7 +332,7 @@ static int macdrv_get_gpus_from_metal(struct macdrv_gpu** new_gpus, int* count)
 
     for (i = 0; i < devices.count; i++)
     {
-        if (macdrv_get_gpu_info_from_registry_id(&gpus[gpu_count], devices[i].registryID))
+        if (macdrv_get_gpu_info_from_mtldevice(&gpus[gpu_count], devices[i]))
             goto done;
 
         if (hide_integrated && devices[i].isLowPower)