demotool/bloom.hh

#pragma once
#ifndef REAL_BUILD
# include "externals.hh"
#endif

#include "rendertarget.hh"
#include "programs.hh"


struct T_BloomPass
{
	static constexpr uint32_t BloomLevels = 6;

	T_BloomPass( ) = delete;
	T_BloomPass( T_BloomPass const& ) = delete;
	T_BloomPass( T_BloomPass&& ) = delete;

	T_BloomPass( __rw__ T_FilesWatcher& watcher ,
			__rw__ T_Texture& input );

	void render( );
	void makeUI( );

	T_Texture& output( ) { return txBlur0_; }

    private:
	T_Texture& input_;

	T_ShaderProgram spHighpass_;
	T_ShaderProgram spDownsample_;
	T_ShaderProgram spBlur_;

	T_TextureSampler sampler_;
	T_Texture txBlur0_ , txBlur1_;
	std::vector< T_Rendertarget > rtBlur0_ , rtBlur1_;

	float filterParams_[ 3 ];
	float blurWeights_[ 4 ];
	float blurSize_;
};