#ifndef BBGE_RENDERBASE_H
#define BBGE_RENDERBASE_H

#include "SDL.h"

// Define this before including GL headers to avoid pulling in windows.h
#if defined(_WIN32) && !defined(APIENTRY)
#  define APIENTRY __stdcall
#endif

#define GL_GLEXT_LEGACY 1
#include <GL/gl.h>
#include <GL/glext.h>

// Extensions from newer glext.h versions
#ifndef GL_ARB_debug_output
#define GL_ARB_debug_output 1
typedef void (APIENTRY  *GLDEBUGPROCARB)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam);
#define GL_DEBUG_OUTPUT_SYNCHRONOUS_ARB   0x8242
#define GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_ARB 0x8243
#define GL_DEBUG_CALLBACK_FUNCTION_ARB    0x8244
#define GL_DEBUG_CALLBACK_USER_PARAM_ARB  0x8245
#define GL_DEBUG_SOURCE_API_ARB           0x8246
#define GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB 0x8247
#define GL_DEBUG_SOURCE_SHADER_COMPILER_ARB 0x8248
#define GL_DEBUG_SOURCE_THIRD_PARTY_ARB   0x8249
#define GL_DEBUG_SOURCE_APPLICATION_ARB   0x824A
#define GL_DEBUG_SOURCE_OTHER_ARB         0x824B
#define GL_DEBUG_TYPE_ERROR_ARB           0x824C
#define GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_ARB 0x824D
#define GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB 0x824E
#define GL_DEBUG_TYPE_PORTABILITY_ARB     0x824F
#define GL_DEBUG_TYPE_PERFORMANCE_ARB     0x8250
#define GL_DEBUG_TYPE_OTHER_ARB           0x8251
#define GL_MAX_DEBUG_MESSAGE_LENGTH_ARB   0x9143
#define GL_MAX_DEBUG_LOGGED_MESSAGES_ARB  0x9144
#define GL_DEBUG_LOGGED_MESSAGES_ARB      0x9145
#define GL_DEBUG_SEVERITY_HIGH_ARB        0x9146
#define GL_DEBUG_SEVERITY_MEDIUM_ARB      0x9147
#define GL_DEBUG_SEVERITY_LOW_ARB         0x9148
typedef void (APIENTRYP PFNGLDEBUGMESSAGECONTROLARBPROC) (GLenum source, GLenum type, GLenum severity, GLsizei count, const GLuint *ids, GLboolean enabled);
typedef void (APIENTRYP PFNGLDEBUGMESSAGEINSERTARBPROC) (GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *buf);
typedef void (APIENTRYP PFNGLDEBUGMESSAGECALLBACKARBPROC) (GLDEBUGPROCARB callback, const void *userParam);
typedef GLuint (APIENTRYP PFNGLGETDEBUGMESSAGELOGARBPROC) (GLuint count, GLsizei bufSize, GLenum *sources, GLenum *types, GLuint *ids, GLenum *severities, GLsizei *lengths, GLchar *messageLog);
#ifdef GL_GLEXT_PROTOTYPES
GLAPI void APIENTRY glDebugMessageControlARB (GLenum source, GLenum type, GLenum severity, GLsizei count, const GLuint *ids, GLboolean enabled);
GLAPI void APIENTRY glDebugMessageInsertARB (GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *buf);
GLAPI void APIENTRY glDebugMessageCallbackARB (GLDEBUGPROCARB callback, const void *userParam);
GLAPI GLuint APIENTRY glGetDebugMessageLogARB (GLuint count, GLsizei bufSize, GLenum *sources, GLenum *types, GLuint *ids, GLenum *severities, GLsizei *lengths, GLchar *messageLog);
#endif
#endif /* GL_ARB_debug_output */

#ifdef _WINDOWS_
#error windows.h was included! euuugh!
#endif

#ifdef APIENTRY
#undef APIENTRY
#endif

#ifdef WINGDIAPI
#undef WINGDIAPI
#endif

extern PFNGLGENERATEMIPMAPEXTPROC glGenerateMipmapEXT;

// GL_ARB_shader_objects
extern PFNGLCREATEPROGRAMOBJECTARBPROC  glCreateProgramObjectARB;
extern PFNGLDELETEOBJECTARBPROC         glDeleteObjectARB;
extern PFNGLUSEPROGRAMOBJECTARBPROC     glUseProgramObjectARB;
extern PFNGLCREATESHADEROBJECTARBPROC   glCreateShaderObjectARB;
extern PFNGLSHADERSOURCEARBPROC         glShaderSourceARB;
extern PFNGLCOMPILESHADERARBPROC        glCompileShaderARB;
extern PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
extern PFNGLATTACHOBJECTARBPROC         glAttachObjectARB;
extern PFNGLGETINFOLOGARBPROC           glGetInfoLogARB;
extern PFNGLLINKPROGRAMARBPROC          glLinkProgramARB;
extern PFNGLGETUNIFORMLOCATIONARBPROC   glGetUniformLocationARB;
extern PFNGLGETACTIVEUNIFORMARBPROC     glGetActiveUniformARB;
extern PFNGLUNIFORM1FVARBPROC           glUniform1fvARB;
extern PFNGLUNIFORM2FVARBPROC           glUniform2fvARB;
extern PFNGLUNIFORM3FVARBPROC           glUniform3fvARB;
extern PFNGLUNIFORM4FVARBPROC           glUniform4fvARB;
extern PFNGLUNIFORM1IVARBPROC           glUniform1ivARB;
extern PFNGLUNIFORM2IVARBPROC           glUniform2ivARB;
extern PFNGLUNIFORM3IVARBPROC           glUniform3ivARB;
extern PFNGLUNIFORM4IVARBPROC           glUniform4ivARB;

extern PFNGLISRENDERBUFFEREXTPROC glIsRenderbufferEXT;
extern PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbufferEXT;
extern PFNGLDELETERENDERBUFFERSEXTPROC glDeleteRenderbuffersEXT;
extern PFNGLGENRENDERBUFFERSEXTPROC glGenRenderbuffersEXT;
extern PFNGLRENDERBUFFERSTORAGEEXTPROC glRenderbufferStorageEXT;
extern PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC glGetRenderbufferParameterivEXT;
extern PFNGLISFRAMEBUFFEREXTPROC glIsFramebufferEXT;
extern PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT;
extern PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT;
extern PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT;
extern PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT;
extern PFNGLFRAMEBUFFERTEXTURE1DEXTPROC glFramebufferTexture1DEXT;
extern PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT;
extern PFNGLFRAMEBUFFERTEXTURE3DEXTPROC glFramebufferTexture3DEXT;
extern PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbufferEXT;
extern PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC glGetFramebufferAttachmentParameterivEXT;

extern PFNGLGENBUFFERSARBPROC glGenBuffersARB;
extern PFNGLDELETEBUFFERSARBPROC glDeleteBuffersARB;
extern PFNGLBUFFERDATAARBPROC glBufferDataARB;
extern PFNGLBUFFERSUBDATAARBPROC glBufferSubDataARB;
extern PFNGLBINDBUFFERARBPROC glBindBufferARB;
extern PFNGLMAPBUFFERARBPROC glMapBufferARB;
extern PFNGLUNMAPBUFFERARBPROC glUnmapBufferARB;

#endif