demotool/raymarcher.hh

#pragma once
#ifndef REAL_BUILD
# define REAL_BUILD
# include "externals.hh"
# include "texture.hh"
# include "rendertarget.hh"
# include "utilities.hh"
# include "programs.hh"
# undef REAL_BUILD
#endif


struct T_Raymarcher
{
    public:
	T_Raymarcher( ) = delete;
	T_Raymarcher( T_Raymarcher const& ) = delete;
	T_Raymarcher( T_Raymarcher&& ) = delete;

	T_Raymarcher( __rw__ T_FilesWatcher& watcher ,
			__rd__ const uint32_t width ,
			__rd__ const uint32_t height );

	void render( );
	void makeUI( );

	T_Camera const& camera( ) const noexcept { return camera_; }
	T_Camera& camera( ) noexcept { return camera_; }

	T_Texture& output( ) noexcept { return txOutput_; }
	T_Texture& depth( ) noexcept { return txDepth_; }

    private:
	T_Camera camera_;

	GLuint pipeline_;
	T_ShaderProgram program_;

	T_Texture txOutput_ , txDepth_;
	T_Rendertarget rtOutput_;

	int rmIterations = 128;
	float rmStep = .9;
	float rmEpsilon = .000001;
	float rmMaxDist = 50;
	float epsLog = log( rmEpsilon ) / log( 10 );
};