Differential D13423 Diff 45772 intern/cycles/device/metal/device.mm

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intern/cycles/device/metal/device.mm

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				/*
				* Copyright 2021 Blender Foundation
				*
				* Licensed under the Apache License, Version 2.0 (the "License");
				* you may not use this file except in compliance with the License.
				* You may obtain a copy of the License at
				*
				* http://www.apache.org/licenses/LICENSE-2.0
				*
				* Unless required by applicable law or agreed to in writing, software
				* distributed under the License is distributed on an "AS IS" BASIS,
				* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
				* See the License for the specific language governing permissions and
				* limitations under the License.
				*/

				#ifdef WITH_METAL

				# include "device/metal/device.h"
				# include "device/metal/device_impl.h"

				#endif

				#include "util/debug.h"
				#include "util/set.h"
				#include "util/system.h"

				CCL_NAMESPACE_BEGIN

				#ifdef WITH_METAL

				Device *device_metal_create(const DeviceInfo &info, Stats &stats, Profiler &profiler)
				{
				return new MetalDevice(info, stats, profiler);
				}

				bool device_metal_init()
				{
				return true;
				}

				static int device_metal_get_num_devices_safe(uint32_t *num_devices)
				{
				*num_devices = MTLCopyAllDevices().count;
				return 0;
				}

				void device_metal_info(vector<DeviceInfo> &devices)
				{
				uint32_t num_devices = 0;
				device_metal_get_num_devices_safe(&num_devices);
				if (num_devices == 0) {
				return;
				}

				vector<MetalPlatformDevice> usable_devices;
				MetalInfo::get_usable_devices(&usable_devices);
				/* Devices are numbered consecutively across platforms. */
				set<string> unique_ids;
				int device_index = 0;
				for (MetalPlatformDevice &device : usable_devices) {
				/* Compute unique ID for persistent user preferences. */
				const string &device_name = device.device_name;
				string id = string("METAL_") + device_name;

				/* Hardware ID might not be unique, add device number in that case. */
				if (unique_ids.find(id) != unique_ids.end()) {
				id += string_printf("_ID_%d", num_devices);
				}
				unique_ids.insert(id);

				/* Create DeviceInfo. */
				DeviceInfo info;
				info.type = DEVICE_METAL;
				info.description = string_remove_trademark(string(device_name));

				/* Ensure unique naming on Apple Silicon / SoC devices which return the same string for CPU and
				* GPU */
				if (info.description == system_cpu_brand_string()) {
				info.description += " (GPU)";
				}

				info.num = device_index;
				/* We don't know if it's used for display, but assume it is. */
				info.display_device = true;
				info.denoisers = DENOISER_NONE;
				info.id = id;

				devices.push_back(info);
				device_index++;
				}
				}

				string device_metal_capabilities()
				{
				string result = "";
				string error_msg = "";
				uint32_t num_devices = 0;
				assert(device_metal_get_num_devices_safe(&num_devices));
				if (num_devices == 0) {
				return "No Metal devices found\n";
				}
				result += string_printf("Number of devices: %u\n", num_devices);

				NSArray<id<MTLDevice>> *allDevices = MTLCopyAllDevices();
				for (id<MTLDevice> device in allDevices) {
				result += string_printf("\t\tDevice: %s\n", [device.name UTF8String]);
				}

				return result;
				}

				#else

				Device *device_metal_create(const DeviceInfo &info, Stats &stats, Profiler &profiler)
				{
				return nullptr;
				}

				bool device_metal_init()
				{
				return false;
				}

				void device_metal_info(vector<DeviceInfo> &devices)
				{
				}

				string device_metal_capabilities()
				{
				return "";
				}

				#endif

				CCL_NAMESPACE_END