VolumeRenderer.h

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#pragma once

#include <glew.h>
#include <vector>
#include <QtGui\qopenglshaderprogram.h>

#include "GLCamera.h"
#include "GLShader.h"
#include "FBO.h"
#include "GUI\Volume.h"
#include "SHADER\DoFShader.h"
#include "SHADER\QuadShader.h"
#include "SHADER/Tex3DShader.h"
#include "RENDER/ProxyGeometry.h"

class VolumeRenderer {

    public:
        VolumeRenderer(Volume* volume);
        ~VolumeRenderer();

        void prepareNewVolume(Volume* v);

        void render(GLCamera& camera);

        // TEST 2.0
        void refreshShader();
        void setFocusPlane(const int& value);
        
        void setBlurFactor(const int& value);

        void render(int w, int h, GLCamera& camera);

    private:
        void loadUp3DTexture();

        void loadUpQuadVAO();

        void loadUpVAO(std::vector<QVector3D>& vertices, std::vector<QVector3D>& texCoord);

        void initFramebuffers();

        void clearFBO(const int& fbo);

        Volume* volume = nullptr;
        DoFShader* dof = nullptr;
        QuadShader* quad = nullptr;
        Tex3DShader* tex3D = nullptr;

        ProxyGeometry* proxyGeometry = nullptr;

        std::vector<FBO*> fbos;

        int lastB2F = -1;
        int lastF2B = -1;
        int numSamples;

        GLuint texID;

        GLuint vao;
        GLuint vboVertices;
        GLuint vboTextureCoord;

        GLuint vaoQuad;
        GLuint vboQuadVertices;
        GLuint vboQuadTextureCoord;
        
};