[PATCH 1/7] winemac.drv: Add macdrv_get_gpus() helper.

[Zhiyi Zhang]

On 4/23/19 12:15 AM, Chip Davis wrote:
> April 22, 2019 7:14 AM, "Zhiyi Zhang" <zzhang at codeweavers.com> wrote:
>
>> diff --git a/dlls/winemac.drv/cocoa_display.m b/dlls/winemac.drv/cocoa_display.m
>> index 93a0fbca35..569cd32352 100644
>> --- a/dlls/winemac.drv/cocoa_display.m
>> +++ b/dlls/winemac.drv/cocoa_display.m
>> @@ -19,6 +19,7 @@
>>  */
>>
>>  #import <AppKit/AppKit.h>
>> +#import <Metal/Metal.h>
> This needs to be guarded with HAVE_METAL_METAL_H.
>
>>  #include "macdrv_cocoa.h"
>>
>> @@ -103,3 +104,170 @@ void macdrv_free_displays(struct macdrv_display* displays)
> [...]
>> +/***********************************************************************
>> + *              macdrv_get_gpus
>> + *
>> + * Get a list of GPU currently in the system. The first GPU is primary.
>> + * Call macdrv_free_gpus() when you are done using the data.
>> + *
>> + * Return -1 on failure with parameters unchanged.
>> + */
>> +int macdrv_get_gpus(struct macdrv_gpu** new_gpus, int* count)
>> +{
>> +    struct macdrv_gpu* gpus;
>> +    CGDirectDisplayID primary_display;
>> +    id<MTLDevice> primary_device;
> This too.
>
>> +    int primary_index = 0;
>> +    int gpu_count;
>> +    int i;
>> +    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
>> +
>> +    NSArray<id<MTLDevice>>* devices = MTLCopyAllDevices();
> And this. You may want to consider an alternative method of finding all the GPUs, to avoid a bunch of #ifdefs.
>
>> +    gpu_count = devices.count ? devices.count : 1;
>> +    gpus = calloc(gpu_count, sizeof(*gpus));
>> +    if (!gpus)
>> +        return -1;
>> +
>> +    primary_display = CGMainDisplayID();
>> +    primary_device = CGDirectDisplayCopyCurrentMetalDevice(primary_display);
>> +
>> +    /* 32bit build. Metal is unsupported. Report only one GPU. Use the primary display to get GPU info */
>> +    if (!devices.count)
>> +    {
>> +        gpus[0].id = 0;
>> +        macdrv_get_gpu_info_from_display_id(&gpus[0], primary_display);
>> +    }
>> +    else
>> +    {
>> +        for (i = 0; i < devices.count; i++)
>> +        {
>> +            gpus[i].id = devices[i].registryID;
> The 'registryID' property is only guaranteed to be present on 10.13 and up. You'll need to check for it before using it, or else you'll take an exception.
Thanks. I will look into if I need Metal support at all.

>
> Chip