/*
 *  PolyGLRenderer.h
 *  TAU
 *
 *  Created by Ivan Safrin on 3/12/08.
 *  Copyright 2008 __MyCompanyName__. All rights reserved.
 *
 */
// @package Renderer

#pragma once
#include "PolyString.h"
#include "PolyLogger.h"
#include "PolyGlobals.h"
#include "PolyRenderer.h"
#include "PolyTexture.h"
#include "PolyGLTexture.h"
#include "PolyCubemap.h"
#include "PolyGLCubemap.h"
#include "PolyGLVertexBuffer.h"
#include "PolyFixedShader.h"
#include "PolyMesh.h"

#ifdef _WINDOWS
	#include <windows.h>
#endif

#if defined(__APPLE__) && defined(__MACH__)
#include <OpenGL/gl.h>
#include <OpenGL/glext.h>
#include <OpenGL/glu.h>	
#else
#include <GL/gl.h>	
#include <GL/glu.h>	
#include <GL/glext.h>
#endif

#ifdef _WINDOWS 

#define GL_EXT_framebuffer_object           1

#if GL_EXT_framebuffer_object
#define GL_FRAMEBUFFER_EXT                 0x8D40
#define GL_RENDERBUFFER_EXT                0x8D41
#define GL_STENCIL_INDEX1_EXT              0x8D46
#define GL_STENCIL_INDEX4_EXT              0x8D47
#define GL_STENCIL_INDEX8_EXT              0x8D48
#define GL_STENCIL_INDEX16_EXT             0x8D49
#define GL_RENDERBUFFER_WIDTH_EXT           0x8D42
#define GL_RENDERBUFFER_HEIGHT_EXT          0x8D43
#define GL_RENDERBUFFER_INTERNAL_FORMAT_EXT 0x8D44
#define GL_RENDERBUFFER_RED_SIZE_EXT        0x8D50
#define GL_RENDERBUFFER_GREEN_SIZE_EXT      0x8D51
#define GL_RENDERBUFFER_BLUE_SIZE_EXT       0x8D52
#define GL_RENDERBUFFER_ALPHA_SIZE_EXT      0x8D53
#define GL_RENDERBUFFER_DEPTH_SIZE_EXT      0x8D54
#define GL_RENDERBUFFER_STENCIL_SIZE_EXT    0x8D55
#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT           0x8CD0
#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT           0x8CD1
#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT         0x8CD2
#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT 0x8CD3
#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT    0x8CD4
#define GL_COLOR_ATTACHMENT0_EXT           0x8CE0
#define GL_COLOR_ATTACHMENT1_EXT           0x8CE1
#define GL_COLOR_ATTACHMENT2_EXT           0x8CE2
#define GL_COLOR_ATTACHMENT3_EXT           0x8CE3
#define GL_COLOR_ATTACHMENT4_EXT           0x8CE4
#define GL_COLOR_ATTACHMENT5_EXT           0x8CE5
#define GL_COLOR_ATTACHMENT6_EXT           0x8CE6
#define GL_COLOR_ATTACHMENT7_EXT           0x8CE7
#define GL_COLOR_ATTACHMENT8_EXT           0x8CE8
#define GL_COLOR_ATTACHMENT9_EXT           0x8CE9
#define GL_COLOR_ATTACHMENT10_EXT          0x8CEA
#define GL_COLOR_ATTACHMENT11_EXT          0x8CEB
#define GL_COLOR_ATTACHMENT12_EXT          0x8CEC
#define GL_COLOR_ATTACHMENT13_EXT          0x8CED
#define GL_COLOR_ATTACHMENT14_EXT          0x8CEE
#define GL_COLOR_ATTACHMENT15_EXT          0x8CEF
#define GL_DEPTH_ATTACHMENT_EXT            0x8D00
#define GL_STENCIL_ATTACHMENT_EXT          0x8D20
#define GL_FRAMEBUFFER_COMPLETE_EXT                        0x8CD5
#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT           0x8CD6
#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT   0x8CD7
#define GL_FRAMEBUFFER_INCOMPLETE_DUPLICATE_ATTACHMENT_EXT 0x8CD8
#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT           0x8CD9
#define GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT              0x8CDA
#define GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT          0x8CDB
#define GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT          0x8CDC
#define GL_FRAMEBUFFER_UNSUPPORTED_EXT                     0x8CDD
#define GL_FRAMEBUFFER_BINDING_EXT         0x8CA6
#define GL_RENDERBUFFER_BINDING_EXT        0x8CA7
#define GL_MAX_COLOR_ATTACHMENTS_EXT       0x8CDF
#define GL_MAX_RENDERBUFFER_SIZE_EXT       0x84E8
#define GL_INVALID_FRAMEBUFFER_OPERATION_EXT 0x0506
#endif
#endif

namespace Polycode {
	class _PolyExport OpenGLRenderer : public Renderer {
		
	public:
		
		OpenGLRenderer();
		~OpenGLRenderer();
		
		void Resize(int xRes, int yRes);
		void BeginRender();
		void EndRender();
		
		Cubemap *createCubemap(Texture *t0, Texture *t1, Texture *t2, Texture *t3, Texture *t4, Texture *t5);
		Texture *createTexture(unsigned int width, unsigned int height, char *textureData, bool clamp, int type = Image::IMAGE_RGBA);
		Texture *createFramebufferTexture(unsigned int width, unsigned int height);
		void createRenderTextures(Texture **colorBuffer, Texture **depthBuffer, int width, int height);
		
		void enableAlphaTest(bool val);
		
		void createVertexBufferForMesh(Mesh *mesh);
		void drawVertexBuffer(VertexBuffer *buffer);						
		void bindFrameBufferTexture(Texture *texture);
		void unbindFramebuffers();
		
		void pushRenderDataArray(RenderDataArray *array);
		RenderDataArray *createRenderDataArrayForMesh(Mesh *mesh, int arrayType);
		RenderDataArray *createRenderDataArray(int arrayType);
		void setRenderArrayData(RenderDataArray *array, float *arrayData);
		void drawArrays(int drawType);		
				
		void setOrthoMode();
		void setPerspectiveMode();
		
		void enableBackfaceCulling(bool val);
		void setViewportSize(int w, int h, float fov=45.0f);
		
		void setLineSmooth(bool val);		
		
		void loadIdentity();
		void setClearColor(float r, float g, float b);
		
		void setTexture(Texture *texture);		
		
		void renderToTexture(Texture *targetTexture);		
		void renderZBufferToTexture(Texture *targetTexture);
		void clearScreen();	
		
		void translate2D(float x, float y);
		void rotate2D(float angle);
		void scale2D(Vector2 *scale);
		
		void setLineSize(float lineSize);
		
		void setVertexColor(float r, float g, float b, float a);
		
		void setBlendingMode(int blendingMode);
		
		void enableLighting(bool enable);	
		void enableFog(bool enable);
		void setFogProperties(int fogMode, Color color, float density, float startDepth, float endDepth);		
				
		void translate3D(Vector3 *position);
		void translate3D(float x, float y, float z);
		void scale3D(Vector3 *scale);
		
		Matrix4 getProjectionMatrix();
		Matrix4 getModelviewMatrix();		
		void setModelviewMatrix(Matrix4 m);	
		void multModelviewMatrix(Matrix4 m);
		
		void enableDepthTest(bool val);
				
		void clearBuffer(bool colorBuffer, bool depthBuffer);	
		void drawToColorBuffer(bool val);
		
		void drawScreenQuad(float qx, float qy);
				
		void pushMatrix();
		void popMatrix();
		
		bool test2DCoordinate(float x, float y, Polycode::Polygon *poly, const Matrix4 &matrix, bool billboardMode);
		
		void setFOV(float fov);
		
		Vector3 Unproject(float x, float y);
		
		void setDepthFunction(int depthFunction);
						
		void clearShader();
		void applyMaterial(Material *material,  ShaderBinding *localOptions, unsigned int shaderIndex);
		
	protected:

		
		float nearPlane;
		float farPlane;
		
		int verticesToDraw;
		
		GLdouble sceneProjectionMatrix[16];
	
		
	};
}