//
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// modification, are permitted provided that the following conditions
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//  * Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//  * Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
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//    contributors may be used to endorse or promote products derived
//    from this software without specific prior written permission.
//
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Copyright (c) 2018 NVIDIA Corporation. All rights reserved.

#pragma once
#include <GL/glew.h>
#include "Shader.h"

class HDRHelper{
public:
	int Width, Height;
	int realWidth, realHeight;

	float padding;
	float fov;
	float fovPad;
	float zNear, zFar;
	float scale;

	Shader mShaderBloomH;
	Shader mShaderBloomV;
	Shader mShaderDOF;

	HDRHelper(float fov, float padding, float zNear, float zFar, const char* resourcePath, float scale);

	void beginHDR(bool useOwnFbo = true);
	void endHDR(bool useOwnFbo = true);

	void Resize(int w, int h);

	void DoHDR(GLuint oldFBO = 0, bool useDOF = true);
	void Destroy();

	GLuint mHDRFbo;
	GLuint mHDRBlurFbo;

	GLuint mHDRColorTex;
	GLuint mHDRDepthTex;
	GLuint mHDRBlurTex;
	GLuint mHDRBloomTex;
};