FrameBuffer.h

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#pragma once

#include "FlingVulkan.h"
#include "FlingTypes.h"
#include <vector>
#include <memory>

namespace Fling
{
    struct AttachmentCreateInfo
    {
        UINT32 Width = {};
        UINT32 Height = {};
        UINT32 LayerCount = {};
        VkFormat Format = {};
        VkImageUsageFlags Usage = {};
    };

    struct FrameBufferAttachment
    {
        FrameBufferAttachment(AttachmentCreateInfo t_Info, const VkDevice& t_Dev);

        ~FrameBufferAttachment();

        void Release();

        bool HasDepth();

        bool HasStencil();

        bool IsDepthStencil();

        inline VkImage GetImageHandle() const { return m_Image; }
        inline VkImageView GetViewHandle() const { return m_ImageView; }
        inline VkFormat GetFormat() const { return m_Format; }
        inline VkDeviceMemory GetMemoryHandle() const { return m_Memory; }
        inline VkSampleCountFlagBits GetSampleCount() const { return m_Samples; }
        inline VkImageSubresourceRange GetSubresourceRange() const { return m_SubresourceRange; }
        inline VkAttachmentDescription GetDescription() const { return m_Description; }

    private:

        VkImage m_Image = VK_NULL_HANDLE;
        VkDeviceMemory m_Memory = VK_NULL_HANDLE;
        VkImageView m_ImageView = VK_NULL_HANDLE;
        VkFormat m_Format = {};
        VkSampleCountFlagBits m_Samples{ VK_SAMPLE_COUNT_1_BIT };
        VkImageUsageFlags m_Usage{ VK_IMAGE_USAGE_SAMPLED_BIT };
        VkImageSubresourceRange m_SubresourceRange = {};
        VkAttachmentDescription m_Description = {};

        const VkDevice& m_Device;
    };

    class FrameBuffer
    {
    public: 
        explicit FrameBuffer(const VkDevice& t_Dev, INT32 t_Width = 2048, INT32 t_Height = 2048);
        ~FrameBuffer();

        void SizeSize(INT32 w, INT32 h);
        void Release();

        VkSampler GetSamplerHandle() const { return m_Sampler; }
        VkFramebuffer GetHandle() const { return m_FrameBuffer; }
        VkRenderPass GetRenderPassHandle() const { return m_RenderPass; }

        VkResult CreateRenderPass();

        VkResult CreateSampler(VkFilter magFilter, VkFilter minFilter, VkSamplerAddressMode adressMode);

        UINT32 AddAttachment(AttachmentCreateInfo t_CreateInfo);

        FrameBufferAttachment* GetAttachmentAtIndex(UINT32 t_Index);

        inline INT32 GetWidth() const { return m_Width; }
        inline INT32 GetHeight() const { return m_Height; }

    private:
        INT32 m_Width = 0;
        INT32 m_Height = 0;
        VkFramebuffer m_FrameBuffer = VK_NULL_HANDLE;
        VkRenderPass m_RenderPass = VK_NULL_HANDLE;
        VkSampler m_Sampler = VK_NULL_HANDLE;
        const VkDevice& m_Device;

        std::vector<FrameBufferAttachment*> m_Attachments;  
    };
}   // namespace Fling