/*

 * Copyright 2022 Google LLC.

 *

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

 */

#ifndef skgpu_VulkanExtensions_DEFINED

#define skgpu_VulkanExtensions_DEFINED

#include "include/core/SkString.h"

#include "include/gpu/vk/VulkanTypes.h"

#include "include/private/base/SkTArray.h"

namespace skgpu {

/**

 * Helper class that eats in an array of extensions strings for instance and device and allows for

 * quicker querying if an extension is present.

 */

class SK_API VulkanExtensions {

public:

    VulkanExtensions() {}

    void init(VulkanGetProc, VkInstance, VkPhysicalDevice,

              uint32_t instanceExtensionCount, const char* const* instanceExtensions,

              uint32_t deviceExtensionCount, const char* const* deviceExtensions);

    bool hasExtension(const char[], uint32_t minVersion) const;

    struct Info {

        Info() {}

        Info(const char* name) : fName(name), fSpecVersion(0) {}

        SkString fName;

        uint32_t fSpecVersion;

        struct Less {

            bool operator()(const Info& a, const SkString& b) const {

                return strcmp(a.fName.c_str(), b.c_str()) < 0;

            }

            bool operator()(const SkString& a, const VulkanExtensions::Info& b) const {

                return strcmp(a.c_str(), b.fName.c_str()) < 0;

            }

        };

    };

#ifdef SK_DEBUG

    void dump() const {

        SkDebugf("**Vulkan Extensions**\n");

        for (int i = 0; i < fExtensions.size(); ++i) {

            SkDebugf("%s. Version: %u\n",

                     fExtensions[i].fName.c_str(), fExtensions[i].fSpecVersion);

        }

        SkDebugf("**End Vulkan Extensions**\n");

    }

#endif

private:

    void getSpecVersions(const VulkanGetProc& getProc, VkInstance, VkPhysicalDevice);

    skia_private::TArray<Info> fExtensions;

};

} // namespace skgpu

#endif // skgpu_VulkanExtensions_DEFINED