/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Copyright:
 *      2016, Danny Robson <danny@nerdcruft.net>
 */

#ifndef CRUFT_VK_TRAITS_HPP
#define CRUFT_VK_TRAITS_HPP

#include "./fwd.hpp"
#include "./vk.hpp"

namespace cruft::vk {
    ///////////////////////////////////////////////////////////////////////////
    template <typename T> struct id_traits { };

    template <> struct id_traits<instance> { using id_t = VkInstance; };
    template <> struct id_traits<physical_device> { using id_t = VkPhysicalDevice; };
    template <> struct id_traits<device> { using id_t = VkDevice; };
    template <> struct id_traits<queue> { using id_t = VkQueue; };
    template <> struct id_traits<command_pool> { using id_t = VkCommandPool; };
    template <> struct id_traits<command_buffer> { using id_t = VkCommandBuffer; };
    template <> struct id_traits<fence> { using id_t = VkFence; };
    template <> struct id_traits<semaphore> { using id_t = VkSemaphore; };
    template <> struct id_traits<event> { using id_t = VkEvent; };
    template <> struct id_traits<render_pass> { using id_t = VkRenderPass; };
    template <> struct id_traits<framebuffer> { using id_t = VkFramebuffer; };
    template <> struct id_traits<shader_module> { using id_t = VkShaderModule; };
    template <> struct id_traits<pipeline> { using id_t = VkPipeline; };
    template <> struct id_traits<pipeline_cache> { using id_t = VkPipelineCache; };
    template <> struct id_traits<device_memory> { using id_t = VkDeviceMemory; };
    template <> struct id_traits<buffer> { using id_t = VkBuffer; };
    template <> struct id_traits<buffer_view> { using id_t = VkBufferView; };


    ///////////////////////////////////////////////////////////////////////////
    template <typename T> struct life_traits { };

    template <> struct life_traits<instance> {
        static constexpr auto create  = vkCreateInstance;
        static constexpr auto destroy = vkDestroyInstance;
    };

    template <> struct life_traits<device> {
        static constexpr auto create = vkCreateDevice;
        static constexpr auto destroy = vkDestroyDevice;
    };

    template <> struct life_traits<command_pool> {
        static constexpr auto create = vkCreateCommandPool;
        static constexpr auto destroy = vkDestroyCommandPool;
    };

    template <> struct life_traits<fence> {
        static constexpr auto create = vkCreateFence;
        static constexpr auto destroy = vkDestroyFence;
    };

    template <> struct life_traits<semaphore> {
        static constexpr auto create = vkCreateSemaphore;
        static constexpr auto destroy = vkDestroySemaphore;
    };

    template <> struct life_traits<event> {
        static constexpr auto create = vkCreateEvent;
        static constexpr auto destroy = vkDestroyEvent;
    };

    template <> struct life_traits<render_pass> {
        static constexpr auto create = vkCreateRenderPass;
        static constexpr auto destroy = vkDestroyRenderPass;
    };

    template <> struct life_traits<framebuffer> {
        static constexpr auto create = vkCreateFramebuffer;
        static constexpr auto destroy = vkDestroyFramebuffer;
    };

    template <> struct life_traits<shader_module> {
        static constexpr auto create = vkCreateShaderModule;
        static constexpr auto destroy = vkDestroyShaderModule;
    };

    template <VkPipelineBindPoint> struct create_traits { };
    template <> struct create_traits<VK_PIPELINE_BIND_POINT_COMPUTE> {
        static constexpr auto func = vkCreateComputePipelines;
    };
    template <> struct create_traits<VK_PIPELINE_BIND_POINT_GRAPHICS> {
        static constexpr auto func = vkCreateGraphicsPipelines;
    };

    // XXX: Currently causes a segfault under gcc-5.3.0 when stabs debgging is
    // enabled. See gcc#71058
    //
    //template <> struct life_traits<pipeline> {
    //    template <VkPipelineBindPoint P>
    //    static constexpr auto create = create_traits<P>::func;
    //    static constexpr auto destroy = vkDestroyPipeline;
    //};

    template <> struct life_traits<pipeline_cache> {
        static constexpr auto create = vkCreatePipelineCache;
        static constexpr auto destroy = vkDestroyPipelineCache;
    };

    template <> struct life_traits<device_memory> {
        static constexpr auto create = vkAllocateMemory;
        static constexpr auto destroy = vkFreeMemory;
    };

    template <> struct life_traits<buffer> {
        static constexpr auto create = vkCreateBuffer;
        static constexpr auto destroy = vkDestroyBuffer;
    };

    template <> struct life_traits<buffer_view> {
        static constexpr auto create = vkCreateBufferView;
    };


    ///////////////////////////////////////////////////////////////////////////
    template <typename T> struct enum_traits { };

    template <> struct enum_traits<physical_device> {
        static constexpr auto enumerate = vkEnumeratePhysicalDevices;
    };
}

#endif