axmol/cocos/renderer/backend/metal/DeviceInfoMTL.h

/****************************************************************************
 Copyright (c) 2018-2019 Xiamen Yaji Software Co., Ltd.

 http://www.cocos2d-x.org

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#pragma once

#include "../DeviceInfo.h"
#import <Metal/Metal.h>

CC_BACKEND_BEGIN

enum class FeatureSet : int32_t
{
    Unknown                      = -1,
    FeatureSet_iOS_GPUFamily1_v1 = 0,
    FeatureSet_iOS_GPUFamily2_v1 = 1,

    FeatureSet_iOS_GPUFamily1_v2 = 2,
    FeatureSet_iOS_GPUFamily2_v2 = 3,
    FeatureSet_iOS_GPUFamily3_v1 = 4,

    FeatureSet_iOS_GPUFamily1_v3 = 5,
    FeatureSet_iOS_GPUFamily2_v3 = 6,
    FeatureSet_iOS_GPUFamily3_v2 = 7,

    FeatureSet_iOS_GPUFamily1_v4 = 8,
    FeatureSet_iOS_GPUFamily2_v4 = 9,
    FeatureSet_iOS_GPUFamily3_v3 = 10,
    FeatureSet_iOS_GPUFamily4_v1 = 11,

    FeatureSet_iOS_GPUFamily1_v5 = 12,
    FeatureSet_iOS_GPUFamily2_v5 = 13,
    FeatureSet_iOS_GPUFamily3_v4 = 14,
    FeatureSet_iOS_GPUFamily4_v2 = 15,

    FeatureSet_macOS_GPUFamily1_v1 = 10000,

    FeatureSet_macOS_GPUFamily1_v2         = 10001,
    FeatureSet_macOS_ReadWriteTextureTier2 = 10002,

    FeatureSet_macOS_GPUFamily1_v3 = 10003,

    FeatureSet_macOS_GPUFamily1_v4 = 10004,
    FeatureSet_macOS_GPUFamily2_v1 = 10005,
};

inline FeatureSet operator--(FeatureSet& x)
{
    return x = (FeatureSet)(std::underlying_type<FeatureSet>::type(x) - 1);
}

/**
 * @addtogroup _metal
 * @{
 */

/**
 * Used to query features and implementation limits
 */
class DeviceInfoMTL : public DeviceInfo
{
public:
    /// @name Constructor, Destructor and Initializers
    /**
     * @param device To query MTLDevice features and implementation limits in Metal.
     */
    DeviceInfoMTL(id<MTLDevice> device);
    virtual ~DeviceInfoMTL() = default;

    /**
     * Gather features and implementation limits
     */
    virtual bool init() override;

    /// @name Setters & Getters
    /**
     * Get vendor device name.
     * @return Vendor device name.
     */
    virtual const char* getVendor() const override;

    /**
     * Get the full name of the vendor device.
     * @return The full name of the vendor device.
     */
    virtual const char* getRenderer() const override;

    /**
     * Get featureSet name.
     * @return FeatureSet name.
     */
    virtual const char* getVersion() const override;

    /**
     * Get metal extensions.
     * @return Extension supported by Metal.
     */
    virtual const char* getExtension() const override;

    /**
     * Check if feature supported by Metal.
     * @param feature Specify feature to be query.
     * @return true if the feature is supported, false otherwise.
     */
    virtual bool checkForFeatureSupported(FeatureType feature) override;

    static bool supportD24S8() { return _isDepth24Stencil8PixelFormatSupported; }

private:
    std::string _deviceName;
    FeatureSet _featureSet = FeatureSet::Unknown;
    static bool _isDepth24Stencil8PixelFormatSupported;
};

// end of _metal group
/// @}
CC_BACKEND_END