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87 lines
3.0 KiB
Plaintext
87 lines
3.0 KiB
Plaintext
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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// Original file Copyright Crytek GMBH or its affiliates, used under license.
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#include "AppleGPUInfoUtils.h"
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#include <Cocoa/Cocoa.h>
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#include <CoreFoundation/CoreFoundation.h>
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#include <CoreGraphics/CoreGraphics.h>
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// this file needs to be sparate since CryEngine headers conflict with the
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// Cocoa definitions
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// this will be removed in the next version of OS X, but for now
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// we can still use it.
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated-declarations"
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long GetVRAMForDisplay(const int dspNum)
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{
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CGError err = CGDisplayNoErr;
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io_service_t *dspPorts = NULL;
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CGDirectDisplayID *displays = NULL;
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CGDisplayCount dspCount = 0;
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CFTypeRef typeCode;
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uint32_t vram = 0;
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// How many active displays do we have?
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err = CGGetActiveDisplayList(0, NULL, &dspCount);
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if (err != kCGErrorSuccess)
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return -1;
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// If the display number is higher than the available display count, return
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if (dspCount < dspNum)
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return -1;
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// Allocate enough memory to hold all the display IDs we have
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displays = (CGDirectDisplayID*)calloc((size_t)dspCount, sizeof(CGDirectDisplayID));
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// Allocate memory for our service ports
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dspPorts = (io_service_t*)calloc((size_t)dspCount, sizeof(io_service_t));
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// Get the list of active displays
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err = CGGetActiveDisplayList(dspCount,
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displays,
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&dspCount);
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if (err == kCGErrorSuccess)
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{
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// Get the service port for the display
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dspPorts[dspNum] = CGDisplayIOServicePort(displays[dspNum]);
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// Ask IOKit for the VRAM size property
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typeCode = IORegistryEntryCreateCFProperty(dspPorts[dspNum],
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CFSTR(kIOFBMemorySizeKey),
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kCFAllocatorDefault,
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kNilOptions);
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// Ensure we have valid data from IOKit
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if(typeCode && CFGetTypeID(typeCode) == CFNumberGetTypeID())
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{
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// If so, convert the CFNumber into a plain unsigned long
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CFNumberGetValue((CFNumberRef)typeCode, kCFNumberSInt32Type, &vram);
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if(typeCode)
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CFRelease(typeCode);
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}
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}
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free(displays);
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free(dspPorts);
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// Return the total number of displays we found
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return (long)vram;
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}
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#pragma clang diagnostic pop
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