EGL 1.4 header from Khronos

1 files changed, 279 insertions, 244 deletions

diff --git a/include/GLES/egl.h b/include/GLES/egl.h
index a211bbc3be6..e33a315723d 100644
--- a/include/GLES/egl.h
+++ b/include/GLES/egl.h
@@ -1,265 +1,300 @@
+/* -*- mode: c; tab-width: 8; -*- */
+/* vi: set sw=4 ts=8: */
+/* Reference version of egl.h for EGL 1.4.
+ * Last modified 2008/05/02
+ */
+
 #ifndef __egl_h_
 #define __egl_h_
 
-/*
-** Copyright 2002-2003 Promoters of the Khronos Group (3Dlabs, ARM Ltd.,
-** ATI Technologies, Inc., Discreet, Ericsson Mobile, Imagination
-** Technologies Group plc, Motorola, Inc., Nokia, Silicon Graphics, Inc.,
-** SK Telecom, and Sun Microsystems).
-**
-** This document is protected by copyright, and contains information
-** proprietary to The Khronos Group. Any copying, adaptation, distribution,
-** public performance, or public display of this document without the
-** express written consent of the copyright holders is strictly prohibited.
-** The receipt or possession of this document does not convey any rights to
-** reproduce, disclose, or distribute its contents, or to manufacture, use,
-** or sell anything that it may describe, in whole or in part.
-*/
-
-#include <GLES/gl.h>
-#include <GLES/egltypes.h>
-
-
-/*
-** 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	/* eglQueryString target */
-#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
-
-/* 0x305C-0x3FFFF reserved for future use */
-
-/*
-** Functions
-*/
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-GLAPI EGLint APIENTRY eglGetError (void);
-
-GLAPI EGLDisplay APIENTRY eglGetDisplay (NativeDisplayType display);
-GLAPI EGLBoolean APIENTRY eglInitialize (EGLDisplay dpy, EGLint *major, EGLint *minor);
-GLAPI EGLBoolean APIENTRY eglTerminate (EGLDisplay dpy);
-GLAPI const char * APIENTRY eglQueryString (EGLDisplay dpy, EGLint name);
-GLAPI void (APIENTRY * eglGetProcAddress (const char *procname))();
-
-GLAPI EGLBoolean APIENTRY eglGetConfigs (EGLDisplay dpy, EGLConfig *configs, EGLint config_size, EGLint *num_config);
-GLAPI EGLBoolean APIENTRY eglChooseConfig (EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config);
-GLAPI EGLBoolean APIENTRY eglGetConfigAttrib (EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint *value);
-
-GLAPI EGLSurface APIENTRY eglCreateWindowSurface (EGLDisplay dpy, EGLConfig config, NativeWindowType window, const EGLint *attrib_list);
-GLAPI EGLSurface APIENTRY eglCreatePixmapSurface (EGLDisplay dpy, EGLConfig config, NativePixmapType pixmap, const EGLint *attrib_list);
-GLAPI EGLSurface APIENTRY eglCreatePbufferSurface (EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list);
-GLAPI EGLBoolean APIENTRY eglDestroySurface (EGLDisplay dpy, EGLSurface surface);
-GLAPI EGLBoolean APIENTRY eglQuerySurface (EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint *value);
-
-/* EGL 1.1 render-to-texture APIs */
-GLAPI EGLBoolean APIENTRY eglSurfaceAttrib (EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value);
-GLAPI EGLBoolean APIENTRY eglBindTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer);
-GLAPI EGLBoolean APIENTRY eglReleaseTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer);
-
-/* EGL 1.1 swap control API */
-GLAPI EGLBoolean APIENTRY eglSwapInterval(EGLDisplay dpy, EGLint interval);
-
-GLAPI EGLContext APIENTRY eglCreateContext (EGLDisplay dpy, EGLConfig config, EGLContext share_list, const EGLint *attrib_list);
-GLAPI EGLBoolean APIENTRY eglDestroyContext (EGLDisplay dpy, EGLContext ctx);
-GLAPI EGLBoolean APIENTRY eglMakeCurrent (EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx);
-GLAPI EGLContext APIENTRY eglGetCurrentContext (void);
-GLAPI EGLSurface APIENTRY eglGetCurrentSurface (EGLint readdraw);
-GLAPI EGLDisplay APIENTRY eglGetCurrentDisplay (void);
-GLAPI EGLBoolean APIENTRY eglQueryContext (EGLDisplay dpy, EGLContext ctx, EGLint attribute, EGLint *value);
-
-GLAPI EGLBoolean APIENTRY eglWaitGL (void);
-GLAPI EGLBoolean APIENTRY eglWaitNative (EGLint engine);
-GLAPI EGLBoolean APIENTRY eglSwapBuffers (EGLDisplay dpy, EGLSurface draw);
-GLAPI EGLBoolean APIENTRY eglCopyBuffers (EGLDisplay dpy, EGLSurface surface, NativePixmapType target);
+/* All platform-dependent types and macro boilerplate (such as EGLAPI
+ * and EGLAPIENTRY) should go in eglplatform.h.
+ */
+#include <EGL/eglplatform.h>
 
 #ifdef __cplusplus
-}
+extern "C" {
 #endif
 
-#endif /* ___egl_h_ */
-
-
+/* EGL Types */
+typedef int32_t EGLint;
+typedef unsigned int EGLBoolean;
+typedef unsigned int EGLenum;
+typedef void *EGLConfig;
+typedef void *EGLContext;
+typedef void *EGLDisplay;
+typedef void *EGLSurface;
+typedef void *EGLClientBuffer;
+
+/* EGL Versioning */
+#define EGL_VERSION_1_0			1
+#define EGL_VERSION_1_1			1
+#define EGL_VERSION_1_2			1
+#define EGL_VERSION_1_3			1
+#define EGL_VERSION_1_4			1
+
+/* EGL Enumerants. Bitmasks and other exceptional cases aside, most
+ * enums are assigned unique values starting at 0x3000.
+ */
+
+/* EGL aliases */
+#define EGL_FALSE			0
+#define EGL_TRUE			1
+
+/* Out-of-band handle values */
+#define EGL_DEFAULT_DISPLAY		((void *)0)
+#define EGL_NO_CONTEXT			((EGLContext)0)
+#define EGL_NO_DISPLAY			((EGLDisplay)0)
+#define EGL_NO_SURFACE			((EGLSurface)0)
+
+/* Out-of-band attribute value */
+#define EGL_DONT_CARE			((EGLint)-1)
+
+/* Errors / GetError return values */
+#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	/* EGL 1.1 - IMG_power_management */
+
+/* Reserved 0x300F-0x301F 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	/* Attrib list terminator */
+#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
+#define EGL_LUMINANCE_SIZE		0x303D
+#define EGL_ALPHA_MASK_SIZE		0x303E
+#define EGL_COLOR_BUFFER_TYPE		0x303F
+#define EGL_RENDERABLE_TYPE		0x3040
+#define EGL_MATCH_NATIVE_PIXMAP		0x3041	/* Pseudo-attribute (not queryable) */
+#define EGL_CONFORMANT			0x3042
+
+/* Reserved 0x3041-0x304F for additional config attributes */
+
+/* Config attribute values */
+#define EGL_SLOW_CONFIG			0x3050	/* EGL_CONFIG_CAVEAT value */
+#define EGL_NON_CONFORMANT_CONFIG	0x3051	/* EGL_CONFIG_CAVEAT value */
+#define EGL_TRANSPARENT_RGB		0x3052	/* EGL_TRANSPARENT_TYPE value */
+#define EGL_RGB_BUFFER			0x308E	/* EGL_COLOR_BUFFER_TYPE value */
+#define EGL_LUMINANCE_BUFFER		0x308F	/* EGL_COLOR_BUFFER_TYPE value */
+
+/* More config attribute values, for EGL_TEXTURE_FORMAT */
+#define EGL_NO_TEXTURE			0x305C
+#define EGL_TEXTURE_RGB			0x305D
+#define EGL_TEXTURE_RGBA		0x305E
+#define EGL_TEXTURE_2D			0x305F
+
+/* Config attribute mask bits */
+#define EGL_PBUFFER_BIT			0x0001	/* EGL_SURFACE_TYPE mask bits */
+#define EGL_PIXMAP_BIT			0x0002	/* EGL_SURFACE_TYPE mask bits */
+#define EGL_WINDOW_BIT			0x0004	/* EGL_SURFACE_TYPE mask bits */
+#define EGL_VG_COLORSPACE_LINEAR_BIT	0x0020	/* EGL_SURFACE_TYPE mask bits */
+#define EGL_VG_ALPHA_FORMAT_PRE_BIT	0x0040	/* EGL_SURFACE_TYPE mask bits */
+#define EGL_MULTISAMPLE_RESOLVE_BOX_BIT 0x0200	/* EGL_SURFACE_TYPE mask bits */
+#define EGL_SWAP_BEHAVIOR_PRESERVED_BIT 0x0400	/* EGL_SURFACE_TYPE mask bits */
+
+#define EGL_OPENGL_ES_BIT		0x0001	/* EGL_RENDERABLE_TYPE mask bits */
+#define EGL_OPENVG_BIT			0x0002	/* EGL_RENDERABLE_TYPE mask bits */
+#define EGL_OPENGL_ES2_BIT		0x0004	/* EGL_RENDERABLE_TYPE mask bits */
+#define EGL_OPENGL_BIT			0x0008	/* EGL_RENDERABLE_TYPE mask bits */
+
+/* QueryString targets */
+#define EGL_VENDOR			0x3053
+#define EGL_VERSION			0x3054
+#define EGL_EXTENSIONS			0x3055
+#define EGL_CLIENT_APIS			0x308D
+
+/* QuerySurface / SurfaceAttrib / CreatePbufferSurface targets */
+#define EGL_HEIGHT			0x3056
+#define EGL_WIDTH			0x3057
+#define EGL_LARGEST_PBUFFER		0x3058
+#define EGL_TEXTURE_FORMAT		0x3080
+#define EGL_TEXTURE_TARGET		0x3081
+#define EGL_MIPMAP_TEXTURE		0x3082
+#define EGL_MIPMAP_LEVEL		0x3083
+#define EGL_RENDER_BUFFER		0x3086
+#define EGL_VG_COLORSPACE		0x3087
+#define EGL_VG_ALPHA_FORMAT		0x3088
+#define EGL_HORIZONTAL_RESOLUTION	0x3090
+#define EGL_VERTICAL_RESOLUTION		0x3091
+#define EGL_PIXEL_ASPECT_RATIO		0x3092
+#define EGL_SWAP_BEHAVIOR		0x3093
+#define EGL_MULTISAMPLE_RESOLVE		0x3099
+
+/* EGL_RENDER_BUFFER values / BindTexImage / ReleaseTexImage buffer targets */
+#define EGL_BACK_BUFFER			0x3084
+#define EGL_SINGLE_BUFFER		0x3085
+
+/* OpenVG color spaces */
+#define EGL_VG_COLORSPACE_sRGB		0x3089	/* EGL_VG_COLORSPACE value */
+#define EGL_VG_COLORSPACE_LINEAR	0x308A	/* EGL_VG_COLORSPACE value */
+
+/* OpenVG alpha formats */
+#define EGL_VG_ALPHA_FORMAT_NONPRE	0x308B	/* EGL_ALPHA_FORMAT value */
+#define EGL_VG_ALPHA_FORMAT_PRE		0x308C	/* EGL_ALPHA_FORMAT value */
+
+/* Constant scale factor by which fractional display resolutions &
+ * aspect ratio are scaled when queried as integer values.
+ */
+#define EGL_DISPLAY_SCALING		10000
+
+/* Unknown display resolution/aspect ratio */
+#define EGL_UNKNOWN			((EGLint)-1)
+
+/* Back buffer swap behaviors */
+#define EGL_BUFFER_PRESERVED		0x3094	/* EGL_SWAP_BEHAVIOR value */
+#define EGL_BUFFER_DESTROYED		0x3095	/* EGL_SWAP_BEHAVIOR value */
+
+/* CreatePbufferFromClientBuffer buffer types */
+#define EGL_OPENVG_IMAGE		0x3096
+
+/* QueryContext targets */
+#define EGL_CONTEXT_CLIENT_TYPE		0x3097
+
+/* CreateContext attributes */
+#define EGL_CONTEXT_CLIENT_VERSION	0x3098
+
+/* Multisample resolution behaviors */
+#define EGL_MULTISAMPLE_RESOLVE_DEFAULT 0x309A	/* EGL_MULTISAMPLE_RESOLVE value */
+#define EGL_MULTISAMPLE_RESOLVE_BOX	0x309B	/* EGL_MULTISAMPLE_RESOLVE value */
+
+/* BindAPI/QueryAPI targets */
+#define EGL_OPENGL_ES_API		0x30A0
+#define EGL_OPENVG_API			0x30A1
+#define EGL_OPENGL_API			0x30A2
+
+/* GetCurrentSurface targets */
+#define EGL_DRAW			0x3059
+#define EGL_READ			0x305A
+
+/* WaitNative engines */
+#define EGL_CORE_NATIVE_ENGINE		0x305B
+
+/* EGL 1.2 tokens renamed for consistency in EGL 1.3 */
+#define EGL_COLORSPACE			EGL_VG_COLORSPACE
+#define EGL_ALPHA_FORMAT		EGL_VG_ALPHA_FORMAT
+#define EGL_COLORSPACE_sRGB		EGL_VG_COLORSPACE_sRGB
+#define EGL_COLORSPACE_LINEAR		EGL_VG_COLORSPACE_LINEAR
+#define EGL_ALPHA_FORMAT_NONPRE		EGL_VG_ALPHA_FORMAT_NONPRE
+#define EGL_ALPHA_FORMAT_PRE		EGL_VG_ALPHA_FORMAT_PRE
+
+/* EGL extensions must request enum blocks from the Khronos
+ * API Registrar, who maintains the enumerant registry. Submit
+ * a bug in Khronos Bugzilla against task "Registry".
+ */
+
+
+
+/* EGL Functions */
+
+EGLAPI EGLint EGLAPIENTRY eglGetError(void);
+
+EGLAPI EGLDisplay EGLAPIENTRY eglGetDisplay(EGLNativeDisplayType display_id);
+EGLAPI EGLBoolean EGLAPIENTRY eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor);
+EGLAPI EGLBoolean EGLAPIENTRY eglTerminate(EGLDisplay dpy);
+
+EGLAPI const char * EGLAPIENTRY eglQueryString(EGLDisplay dpy, EGLint name);
+
+EGLAPI EGLBoolean EGLAPIENTRY eglGetConfigs(EGLDisplay dpy, EGLConfig *configs,
+			 EGLint config_size, EGLint *num_config);
+EGLAPI EGLBoolean EGLAPIENTRY eglChooseConfig(EGLDisplay dpy, const EGLint *attrib_list,
+			   EGLConfig *configs, EGLint config_size,
+			   EGLint *num_config);
+EGLAPI EGLBoolean EGLAPIENTRY eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
+			      EGLint attribute, EGLint *value);
+
+EGLAPI EGLSurface EGLAPIENTRY eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config,
+				  EGLNativeWindowType win,
+				  const EGLint *attrib_list);
+EGLAPI EGLSurface EGLAPIENTRY eglCreatePbufferSurface(EGLDisplay dpy, EGLConfig config,
+				   const EGLint *attrib_list);
+EGLAPI EGLSurface EGLAPIENTRY eglCreatePixmapSurface(EGLDisplay dpy, EGLConfig config,
+				  EGLNativePixmapType pixmap,
+				  const EGLint *attrib_list);
+EGLAPI EGLBoolean EGLAPIENTRY eglDestroySurface(EGLDisplay dpy, EGLSurface surface);
+EGLAPI EGLBoolean EGLAPIENTRY eglQuerySurface(EGLDisplay dpy, EGLSurface surface,
+			   EGLint attribute, EGLint *value);
 
-/* usage
+EGLAPI EGLBoolean EGLAPIENTRY eglBindAPI(EGLenum api);
+EGLAPI EGLenum EGLAPIENTRY eglQueryAPI(void);
 
-	// ----------------------------------------------------------------------
-	// Initialization
-	// ----------------------------------------------------------------------
+EGLAPI EGLBoolean EGLAPIENTRY eglWaitClient(void);
 
-    HDC hdc = GetDC(0);		// the screen or window device context, for example 
+EGLAPI EGLBoolean EGLAPIENTRY eglReleaseThread(void);
 
-	EGLDisplay display = eglGetDisplay(hdc);
-	
-	EGLint major, minor;
+EGLAPI EGLSurface EGLAPIENTRY eglCreatePbufferFromClientBuffer(
+	      EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
+	      EGLConfig config, const EGLint *attrib_list);
 
-	if (!eglInitialize(display, &major, &minor)) {
-		// could not initialize display
-	}
+EGLAPI EGLBoolean EGLAPIENTRY eglSurfaceAttrib(EGLDisplay dpy, EGLSurface surface,
+			    EGLint attribute, EGLint value);
+EGLAPI EGLBoolean EGLAPIENTRY eglBindTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer);
+EGLAPI EGLBoolean EGLAPIENTRY eglReleaseTexImage(EGLDisplay dpy, EGLSurface surface, EGLint buffer);
 
-    EGLConfig configs[10];
-	EGLint matchingConfigs;
-	EGLint attribList[] = { 0 };	// extend this
 
-	if (!eglChooseConfig(display, attribList, &configs, 10, &matchingConfigs)) {
-		// could not choose config
-	}
+EGLAPI EGLBoolean EGLAPIENTRY eglSwapInterval(EGLDisplay dpy, EGLint interval);
 
-	if (matchingConfigs < 1) {
-		// did not find a suitable configuration
-	}
 
-	EGLConfig config = configs[0];	// pick any
+EGLAPI EGLContext EGLAPIENTRY eglCreateContext(EGLDisplay dpy, EGLConfig config,
+			    EGLContext share_context,
+			    const EGLint *attrib_list);
+EGLAPI EGLBoolean EGLAPIENTRY eglDestroyContext(EGLDisplay dpy, EGLContext ctx);
+EGLAPI EGLBoolean EGLAPIENTRY eglMakeCurrent(EGLDisplay dpy, EGLSurface draw,
+			  EGLSurface read, EGLContext ctx);
 
-	EGLSurface surface = eglCreatePbufferSurface(display, config, attribList);
-	
-	// test for error 
+EGLAPI EGLContext EGLAPIENTRY eglGetCurrentContext(void);
+EGLAPI EGLSurface EGLAPIENTRY eglGetCurrentSurface(EGLint readdraw);
+EGLAPI EGLDisplay EGLAPIENTRY eglGetCurrentDisplay(void);
+EGLAPI EGLBoolean EGLAPIENTRY eglQueryContext(EGLDisplay dpy, EGLContext ctx,
+			   EGLint attribute, EGLint *value);
 
-	EGLContext context = eglCreateContext(display, config, 0, attribList);
-	
-	// test for error
+EGLAPI EGLBoolean EGLAPIENTRY eglWaitGL(void);
+EGLAPI EGLBoolean EGLAPIENTRY eglWaitNative(EGLint engine);
+EGLAPI EGLBoolean EGLAPIENTRY eglSwapBuffers(EGLDisplay dpy, EGLSurface surface);
+EGLAPI EGLBoolean EGLAPIENTRY eglCopyBuffers(EGLDisplay dpy, EGLSurface surface,
+			  EGLNativePixmapType target);
 
-	// ----------------------------------------------------------------------
-	// Rendering Loop
-	// ----------------------------------------------------------------------
+EGLAPI void (* EGLAPIENTRY eglGetProcAddress(const char *procname))(void);
 
-	eglMakeCurrent(display, surface, surface, context);
-
-	// actual GL rendering goes here
-
-	eglWait();
-    eglSwapBuffers(display, surface);
-
-	// ----------------------------------------------------------------------
-	// Cleanup
-	// ----------------------------------------------------------------------
-
-
-	if (!eglDestoyContext(display, context)) {
-		// error deallocating context
-	}
-	
-	if (!eglDestroySurface(display, surface)) {
-		// error deallocating surface
-	}
-
-	if (!eglTerminate(display)) {
-		// error while cleaning up display
-	}
+#ifdef __cplusplus
+}
+#endif
 
-	
-*/
+#endif /* __egl_h_ */