framebuffer.h

#pragma once

#include <vector>

#include <glm/glm.hpp>

#include <glow/ref_ptr.h>

#include "etc/contextdependant.h"


namespace glow {
    class FrameBufferObject;
    class Texture;
}

class FrameBuffer : public ContextDependant {
public:
    FrameBuffer(int colorAttachments = 1, bool depthAttachment = true);

    void bind();
    void unbind();

    void clear();

    glow::FrameBufferObject& get();
    void setDrawBuffers(const std::vector<int>& buffers);

    void setResolution(const glm::ivec2& resolution);
    const glm::ivec2& resolution();

    glow::Texture* texture(int i);


protected:
    int m_colorAttachmentCount;
    bool m_useDepthAttachment;
    glm::ivec2 m_resolution;
    glow::ref_ptr<glow::FrameBufferObject> m_fbo;

    void setupFBO();
    virtual void beforeContextDestroy() override;
    virtual void afterContextRebuild() override;
};