#ifndef __EGL__H__
#define __EGL__H__

typedef int EGLBoolean;
typedef int EGLint;
typedef int EGLDisplay;
typedef int EGLConfig;
typedef int EGLSurface;
typedef int EGLContext;

typedef int NativeDisplayType;
typedef void *NativeWindowType;
typedef void *NativePixmapType;

#define EGL_DEFAULT_DISPLAY 0
#define EGL_NO_CONTEXT 0
#define EGL_NO_DISPLAY 0
#define EGL_NO_SURFACE 0

/*
** Versioning and extensions
*/
#define EGL_VERSION_1_0 1
#define EGL_VERSION_1_1 1

/*
** Boolean
*/
#define EGL_FALSE 0
#define EGL_TRUE 1

/*
** Errors
*/
#define EGL_SUCCESS 0x3000
#define EGL_NOT_INITIALIZED 0x3001
#define EGL_BAD_ACCESS 0x3002
#define EGL_BAD_ALLOC 0x3003
#define EGL_BAD_ATTRIBUTE 0x3004
#define EGL_BAD_CONFIG 0x3005
#define EGL_BAD_CONTEXT 0x3006
#define EGL_BAD_CURRENT_SURFACE 0x3007
#define EGL_BAD_DISPLAY 0x3008
#define EGL_BAD_MATCH 0x3009
#define EGL_BAD_NATIVE_PIXMAP 0x300A
#define EGL_BAD_NATIVE_WINDOW 0x300B
#define EGL_BAD_PARAMETER 0x300C
#define EGL_BAD_SURFACE 0x300D
#define EGL_CONTEXT_LOST 0x300E
/* 0x300F - 0x301F reserved for additional errors. */

/*
** Config attributes
*/
#define EGL_BUFFER_SIZE 0x3020
#define EGL_ALPHA_SIZE 0x3021
#define EGL_BLUE_SIZE 0x3022
#define EGL_GREEN_SIZE 0x3023
#define EGL_RED_SIZE 0x3024
#define EGL_DEPTH_SIZE 0x3025
#define EGL_STENCIL_SIZE 0x3026
#define EGL_CONFIG_CAVEAT 0x3027
#define EGL_CONFIG_ID 0x3028
#define EGL_LEVEL 0x3029
#define EGL_MAX_PBUFFER_HEIGHT 0x302A
#define EGL_MAX_PBUFFER_PIXELS 0x302B
#define EGL_MAX_PBUFFER_WIDTH 0x302C
#define EGL_NATIVE_RENDERABLE 0x302D
#define EGL_NATIVE_VISUAL_ID 0x302E
#define EGL_NATIVE_VISUAL_TYPE 0x302F
/*#define EGL_PRESERVED_RESOURCES        0x3030*/
#define EGL_SAMPLES 0x3031
#define EGL_SAMPLE_BUFFERS 0x3032
#define EGL_SURFACE_TYPE 0x3033
#define EGL_TRANSPARENT_TYPE 0x3034
#define EGL_TRANSPARENT_BLUE_VALUE 0x3035
#define EGL_TRANSPARENT_GREEN_VALUE 0x3036
#define EGL_TRANSPARENT_RED_VALUE 0x3037

#define EGL_NONE 0x3038 /* Also a config value */
#define EGL_BIND_TO_TEXTURE_RGB 0x3039
#define EGL_BIND_TO_TEXTURE_RGBA 0x303A
#define EGL_MIN_SWAP_INTERVAL 0x303B
#define EGL_MAX_SWAP_INTERVAL 0x303C

/*
** Config values
*/
#define EGL_DONT_CARE ( (EGLint)-1 )

#define EGL_SLOW_CONFIG 0x3050           /* EGL_CONFIG_CAVEAT value */
#define EGL_NON_CONFORMANT_CONFIG 0x3051 /* " */
#define EGL_TRANSPARENT_RGB 0x3052       /* EGL_TRANSPARENT_TYPE value */
#define EGL_NO_TEXTURE 0x305C            /* EGL_TEXTURE_FORMAT/TARGET value */
#define EGL_TEXTURE_RGB 0x305D           /* EGL_TEXTURE_FORMAT value */
#define EGL_TEXTURE_RGBA 0x305E          /* " */
#define EGL_TEXTURE_2D 0x305F            /* EGL_TEXTURE_TARGET value */

/*
** Config attribute mask bits
*/
#define EGL_PBUFFER_BIT 0x01 /* EGL_SURFACE_TYPE mask bit */
#define EGL_PIXMAP_BIT 0x02  /* " */
#define EGL_WINDOW_BIT 0x04  /* " */

/*
** String names
*/
#define EGL_VENDOR 0x3053
#define EGL_VERSION 0x3054
#define EGL_EXTENSIONS 0x3055

/*
** Surface attributes
*/
#define EGL_HEIGHT 0x3056
#define EGL_WIDTH 0x3057
#define EGL_LARGEST_PBUFFER 0x3058
#define EGL_TEXTURE_FORMAT 0x3080 /* For pbuffers bound as textures */
#define EGL_TEXTURE_TARGET 0x3081 /* " */
#define EGL_MIPMAP_TEXTURE 0x3082 /* " */
#define EGL_MIPMAP_LEVEL 0x3083   /* " */

/*
** BindTexImage / ReleaseTexImage buffer target
*/
#define EGL_BACK_BUFFER 0x3084

/*
** Current surfaces
*/
#define EGL_DRAW 0x3059
#define EGL_READ 0x305A

/*
** Engines
*/
#define EGL_CORE_NATIVE_ENGINE 0x305B

#ifdef __cplusplus
extern "C" {
#endif

EGLint eglGetError( void );

EGLDisplay eglGetDisplay( NativeDisplayType display );
EGLBoolean eglInitialize( EGLDisplay dpy, EGLint *major, EGLint *minor );
EGLBoolean eglTerminate( EGLDisplay dpy );
const char *eglQueryString( EGLDisplay dpy, EGLint name );
//#ifdef __cplusplus
//void (* eglGetProcAddress (const char *procname))(...);
//#else
void *eglGetProcAddress( const char *procname );
//#endif

EGLBoolean eglGetConfigs( EGLDisplay dpy, EGLConfig *configs, EGLint config_size, EGLint *num_config );
EGLBoolean eglChooseConfig( EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config );
EGLBoolean eglGetConfigAttrib( EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint *value );

EGLSurface eglCreateWindowSurface( EGLDisplay dpy, EGLConfig config, NativeWindowType window, const EGLint *attrib_list );
EGLSurface eglCreatePixmapSurface( EGLDisplay dpy, EGLConfig config, NativePixmapType pixmap, const EGLint *attrib_list );
EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list );
EGLBoolean eglDestroySurface( EGLDisplay dpy, EGLSurface surface );
EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint *value );
/* EGL 1.1 render-to-texture APIs */
EGLBoolean eglSurfaceAttrib( EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value );
EGLBoolean eglBindTexImage( EGLDisplay dpy, EGLSurface surface, EGLint buffer );
EGLBoolean eglReleaseTexImage( EGLDisplay dpy, EGLSurface surface, EGLint buffer );

/* EGL 1.1 swap control API */
EGLBoolean eglSwapInterval( EGLDisplay dpy, EGLint interval );

EGLContext eglCreateContext( EGLDisplay dpy, EGLConfig config, EGLContext share_list, const EGLint *attrib_list );
EGLBoolean eglDestroyContext( EGLDisplay dpy, EGLContext ctx );
EGLBoolean eglMakeCurrent( EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx );
EGLContext eglGetCurrentContext( void );
EGLSurface eglGetCurrentSurface( EGLint readdraw );
EGLDisplay eglGetCurrentDisplay( void );
EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx, EGLint attribute, EGLint *value );

EGLBoolean eglWaitGL( void );
EGLBoolean eglWaitNative( EGLint engine );
EGLBoolean eglSwapBuffers( EGLDisplay dpy, EGLSurface draw );
EGLBoolean eglCopyBuffers( EGLDisplay dpy, EGLSurface surface, NativePixmapType target );

#ifdef __cplusplus
}
#endif

#endif /* ___egl_h_ */