VulkanRendererAPI.h

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#pragma once
 
#include "Karma/Renderer/RendererAPI.h"
#include "vulkan/vulkan.h"
 
namespace Karma
{
    class VulkanVertexArray;

    class KARMA_API VulkanRendererAPI : public RendererAPI
    {
    public:
        VulkanRendererAPI();

        virtual ~VulkanRendererAPI();

        virtual void SetClearColor(const glm::vec4& color) override;

        virtual void Clear() override;

        virtual void BeginScene() override;
        
        virtual void DrawIndexed(std::shared_ptr<VertexArray> vertexArray) override;

        virtual void EndScene() override;

        void AllocateCommandBuffers();

        void RecordCommandBuffers(VkCommandBuffer commandBuffer, uint32_t imageIndex);

        void SubmitCommandBuffers();

        void CreateSynchronicity();

        void ClearVulkanRendererAPI();

        void RemoveSynchronicity();

        void RecreateCommandBuffersPipelineSwapchain();

        void RecreateCommandBuffersAndSwapChain();
 
        // Getters. Depending on detailed implementation of other API (such as OpenGL), we may promote the getter to abstract
        const std::vector<VkCommandBuffer>& GetCommandBuffers() const { return m_commandBuffers; }
        const int& GetMaxFramesInFlight() const { return MAX_FRAMES_IN_FLIGHT; }
        const std::vector<VkFence>& GetFences() const { return m_InFlightFences; }
        const std::vector<VkSemaphore>& GetImageAvailableSemaphores() const { return m_ImageAvailableSemaphores; }
        const std::vector<VkSemaphore> GetRenderFinishedSemaphore() const { return m_RenderFinishedSemaphores; }
 
    private:
        size_t m_CurrentFrame = 0;
 
        std::vector<VkCommandBuffer> m_commandBuffers;
        std::vector<std::shared_ptr<VulkanVertexArray>> m_VulkaVertexArrays;
 
        std::vector<VkSemaphore> m_ImageAvailableSemaphores;
        std::vector<VkSemaphore> m_RenderFinishedSemaphores;
        std::vector<VkFence> m_InFlightFences;
 
        // Number of images (to work upon (CPU side) whilst an image is being rendered (GPU side processing)) + 1
        // Clearly, MAX_FRAMES_IN_FLIGHT shouldn't exceed m_SwapChainImages.size()
        const int MAX_FRAMES_IN_FLIGHT = 2;
 
        bool m_bAllocateCommandBuffers;
    };
}