framebuffer.hpp

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/*
 * Copyright (C) 2022 Konstanty Misiak
 *
 * SPDX-License-Identifier: MIT
 */
 
#pragma once
#include "jng/core/base.hpp"
#include "jng/renderer/texture.hpp"
 
namespace jng {
 
    class Framebuffer final
    {
    public:
        struct Properties {
            u32 width;
            u32 height;
            u32 samples = 1;
            std::vector<TextureSpecification> attachmentsSpecifications;
            
            bool swapChainTarget = false;
        };
 
        explicit Framebuffer(const Properties& properties);
        ~Framebuffer();
 
        void bind() const;
        void unbind() const;
 
        void resize(u32 width, u32 height);
        u32 readPixel(u32 colorAttachmentIndex, u32 x, u32 y) const;
        void clearAttachment(u32 attachmentIndex, int value) const;
        void clearAttachment(u32 attachmentIndex, float value) const;
        
        const std::vector<Ref<Texture>>& getAttachments() const { return m_attachments; }
        const Properties& getProperties() const { return m_properties; }
    private:
        void recreate();
 
        Properties m_properties;
        u32 m_ID;
        std::vector<Ref<Texture>> m_attachments;
        u32 m_colorAttachmentID;
        u32 m_depthAttachmentID;
    };
 
} // namespace jng