#pragma once
//========================================================================
// Shaders.h - helper classes to call GameCode4_VS.hlsl and GameCode4_PS.hlsl
//
// Part of the GameCode4 Application
//
// GameCode4 is the sample application that encapsulates much of the source code
// discussed in "Game Coding Complete - 4th Edition" by Mike McShaffry and David
// "Rez" Graham, published by Charles River Media. 
// ISBN-10: 1133776574 | ISBN-13: 978-1133776574
//
// If this source code has found it's way to you, and you think it has helped you
// in any way, do the authors a favor and buy a new copy of the book - there are 
// detailed explanations in it that compliment this code well. Buy a copy at Amazon.com
// by clicking here: 
//    http://www.amazon.com/gp/product/1133776574/ref=olp_product_details?ie=UTF8&me=&seller=
//
// There's a companion web site at http://www.mcshaffry.com/GameCode/
// 
// The source code is managed and maintained through Google Code: 
//    http://code.google.com/p/gamecode4/
//
// (c) Copyright 2012 Michael L. McShaffry and David Graham
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser GPL v3
// as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See 
// http://www.gnu.org/licenses/lgpl-3.0.txt for more details.
//
// You should have received a copy of the GNU Lesser GPL v3
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
//========================================================================

//========================================================================
// Content References in Game Coding Complete 4th Edition
// 
// class GameCode4_Hlsl_VertexShader			- Chapter 15, page 508
// class GameCode4_Hlsl_PixelShader				- Chapter 15, page 515
//

// #include <xnamath.h>

// #include "Geometry.h"
#include "Material.h"
#include <GL/glew.h>

// Forward declarations
class SceneNode;
class Scene;

class OpenGLShader
{
public:
	OpenGLShader();
	~OpenGLShader();
	
protected:
	GLuint m_shaderId;
};

class OpenGLShaderProgram
{
public:
	OpenGLShaderProgram();
	~OpenGLShaderProgram();

	int OnRestore(Scene *pScene);
	int SetupRender(Scene *pScene, SceneNode *pNode);
	void EnableLights(bool enableLights) { m_enableLights = enableLights; }
	int SetTexture(const std::string& textureName);
	
protected:
	bool   			m_enableLights;
	GLuint 			m_programId;
	GLuint          m_matrixUbo;
	GLuint			m_lightsUbo;
	GLuint			m_materialsUbo;
	std::string		m_textureResource;
};