axmol/core/renderer/backend/metal/DepthStencilStateMTL.h

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

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#pragma once

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

#include "tsl/robin_map.h"

NS_AX_BACKEND_BEGIN

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

/**
 * A class represent a depth/stencil test status.
 */
class DepthStencilStateMTL : public DepthStencilState
{
public:
    /// @name Constructor, Destructor and Initializers
    /**
     * @param mtlDevice The device for which MTLDepthStencilState object was created.
     */
    DepthStencilStateMTL(id<MTLDevice> mtlDevice);
    ~DepthStencilStateMTL();

    void update(const DepthStencilDescriptor& dsDesc) override;

    /// @name Setters & Getters
    /**
     * get a MTLDepthStencilState object
     */
    inline id<MTLDepthStencilState> getMTLDepthStencilState() const { return _mtlDepthStencilState; }

private:
    id<MTLDevice> _mtlDevice = nil;

    // the current depth stencil state
    id<MTLDepthStencilState> _mtlDepthStencilState = nil;

    tsl::robin_map<uint32_t, id<MTLDepthStencilState>> _mtlStateCache;
};

// end of _metal group
/// @}
NS_AX_BACKEND_END