SDFRenderer.h

#ifndef SDF_RENDERER_H
#define SDF_RENDERER_H

#include "prereq.h"
#include "common.h"
#include "ShaderProgram.hpp"
#include "FBO.hpp"

//class SDF_Hashtable;

class SDFRenderer {
	unsigned int numOccupiedBlocks = 0;
	GLuint SDF_VAO;
	GLuint CanvasVAO, CanvasVBO;
	GLuint numOccupiedBlocks_handle = -1;
	GLuint SDF_VolumeBuffer_handle;
	GLuint compactHashTable_handle;
	std::unique_ptr<FBO> fbo_front;
	std::unique_ptr<FBO> fbo_back;

	std::unique_ptr<ShaderProgram> raycast_shader;
	std::unique_ptr<ShaderProgram> depthWriteShader;	//Shader to compare depths between fbo_front and fbo_back FBOs
	std::unique_ptr<ShaderProgram> drawLinearDepth;
	const float zNear = 0.1f;
	const float zFar = 5.0f;
	glm::mat4 projMat = glm::perspective(45.0f, 1.3333f, zNear, zFar);
	//---------------DEBUG--------------------------------
	GLuint dbg_R16I_imgTex;	//for front face
	//----------------------------------------------------

public:
	friend class SDF_Hashtable;
	SDFRenderer();
	~SDFRenderer();
	void CreateImageBuffer();
	void printSDFdata();
	void generateCanvas();
	void render(const glm::mat4&);
	void drawToFrontAndBack(const glm::mat4&);
	void drawSDF(ShaderProgram &, const glm::mat4&);
	void printDebugImage();
	//friend void registerGLtoCUDA(SDFRenderer*);
	//SDFRenderer(const SDFRenderer&) = delete;
	//SDFRenderer& operator=(const SDFRenderer&) = delete;
};
#endif // !SDF_RENDERER_H