GPU: detect supported platform graphic API version

src/detection/gpu/gpu_apple.c

@@ -6,6 +6,8 @@
 
 #include <IOKit/graphics/IOGraphicsLib.h>
 
+const char* ffGpuDetectMetal(FFlist* gpus);
+
 static double detectGpuTemp(const FFstrbuf* gpuName)
 {
     double result = 0;
@@ -55,6 +57,8 @@ const char* ffDetectGPUImpl(const FFGPUOptions* options, FFlist* gpus)
         gpu->dedicated.total = gpu->dedicated.used = gpu->shared.total = gpu->shared.used = FF_GPU_VMEM_SIZE_UNSET;
         gpu->type = FF_GPU_TYPE_UNKNOWN;
         gpu->frequency = FF_GPU_FREQUENCY_UNSET;
+        IORegistryEntryGetRegistryEntryID(registryEntry, &gpu->deviceId);
+        ffStrbufInitStatic(&gpu->platformApi, "Metal");
 
         ffStrbufInit(&gpu->driver); // Ok for both Apple and Intel
         ffCfDictGetString(properties, CFSTR("CFBundleIdentifier"), &gpu->driver);
@@ -103,5 +107,7 @@ const char* ffDetectGPUImpl(const FFGPUOptions* options, FFlist* gpus)
     }
 
     IOObjectRelease(iterator);
+
+    ffGpuDetectMetal(gpus);
     return NULL;
 }