--- /dev/null
+#ifndef __gl2_h_
+#define __gl2_h_
+
+/* $Id: gl2.h 5418 2008-03-26 19:57:12Z oddhack $ */
+
+#include <GLES2/gl2platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+** License Applicability. Except to the extent portions of this file are
+** made subject to an alternative license as permitted in the SGI Free
+** Software License B, Version 1.0 (the "License"), the contents of this
+** file are subject only to the provisions of the License. You may not use
+** this file except in compliance with the License. You may obtain a copy
+** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+**
+** http://oss.sgi.com/projects/FreeB
+**
+** Note that, as provided in the License, the Software is distributed on an
+** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+**
+** Original Code. The Original Code is: OpenGL Sample Implementation,
+** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+** Copyright in any portions created by third parties is as indicated
+** elsewhere herein. All Rights Reserved.
+**
+** Additional Notice Provisions: The application programming interfaces
+** established by SGI in conjunction with the Original Code are The
+** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+** Window System(R) (Version 1.3), released October 19, 1998. This software
+** was created using the OpenGL(R) version 1.2.1 Sample Implementation
+** published by SGI, but has not been independently verified as being
+** compliant with the OpenGL(R) version 1.2.1 Specification.
+*/
+
+/*-------------------------------------------------------------------------
+ * Data type definitions
+ *-----------------------------------------------------------------------*/
+
+typedef void GLvoid;
+typedef unsigned int GLenum;
+typedef unsigned char GLboolean;
+typedef unsigned int GLbitfield;
+typedef signed char GLbyte;
+typedef short GLshort;
+typedef int GLint;
+typedef int GLsizei;
+typedef unsigned char GLubyte;
+typedef unsigned short GLushort;
+typedef unsigned int GLuint;
+typedef float GLfloat;
+typedef float GLclampf;
+typedef int GLfixed;
+typedef int GLclampx;
+
+/* GL types for handling large vertex buffer objects */
+typedef int GLintptr;
+typedef int GLsizeiptr;
+
+/* OpenGL ES core versions */
+#define GL_ES_VERSION_2_0 1
+
+/* ClearBufferMask */
+#define GL_DEPTH_BUFFER_BIT 0x00000100
+#define GL_STENCIL_BUFFER_BIT 0x00000400
+#define GL_COLOR_BUFFER_BIT 0x00004000
+
+/* Boolean */
+#define GL_FALSE 0
+#define GL_TRUE 1
+
+/* \todo check that this should be in core. */
+#define GL_NONE 0
+
+/* BeginMode */
+#define GL_POINTS 0x0000
+#define GL_LINES 0x0001
+#define GL_LINE_LOOP 0x0002
+#define GL_LINE_STRIP 0x0003
+#define GL_TRIANGLES 0x0004
+#define GL_TRIANGLE_STRIP 0x0005
+#define GL_TRIANGLE_FAN 0x0006
+
+/* AlphaFunction (not supported in ES20) */
+/* GL_NEVER */
+/* GL_LESS */
+/* GL_EQUAL */
+/* GL_LEQUAL */
+/* GL_GREATER */
+/* GL_NOTEQUAL */
+/* GL_GEQUAL */
+/* GL_ALWAYS */
+
+/* BlendingFactorDest */
+#define GL_ZERO 0
+#define GL_ONE 1
+#define GL_SRC_COLOR 0x0300
+#define GL_ONE_MINUS_SRC_COLOR 0x0301
+#define GL_SRC_ALPHA 0x0302
+#define GL_ONE_MINUS_SRC_ALPHA 0x0303
+#define GL_DST_ALPHA 0x0304
+#define GL_ONE_MINUS_DST_ALPHA 0x0305
+
+/* BlendingFactorSrc */
+/* GL_ZERO */
+/* GL_ONE */
+#define GL_DST_COLOR 0x0306
+#define GL_ONE_MINUS_DST_COLOR 0x0307
+#define GL_SRC_ALPHA_SATURATE 0x0308
+/* GL_SRC_ALPHA */
+/* GL_ONE_MINUS_SRC_ALPHA */
+/* GL_DST_ALPHA */
+/* GL_ONE_MINUS_DST_ALPHA */
+
+/* BlendEquationSeparate */
+#define GL_FUNC_ADD 0x8006
+#define GL_BLEND_EQUATION 0x8009
+#define GL_BLEND_EQUATION_RGB 0x8009 /* same as BLEND_EQUATION */
+#define GL_BLEND_EQUATION_ALPHA 0x883D
+
+/* BlendSubtract */
+#define GL_FUNC_SUBTRACT 0x800A
+#define GL_FUNC_REVERSE_SUBTRACT 0x800B
+
+/* Separate Blend Functions */
+#define GL_BLEND_DST_RGB 0x80C8
+#define GL_BLEND_SRC_RGB 0x80C9
+#define GL_BLEND_DST_ALPHA 0x80CA
+#define GL_BLEND_SRC_ALPHA 0x80CB
+#define GL_CONSTANT_COLOR 0x8001
+#define GL_ONE_MINUS_CONSTANT_COLOR 0x8002
+#define GL_CONSTANT_ALPHA 0x8003
+#define GL_ONE_MINUS_CONSTANT_ALPHA 0x8004
+#define GL_BLEND_COLOR 0x8005
+
+/* Buffer Objects */
+#define GL_ARRAY_BUFFER 0x8892
+#define GL_ELEMENT_ARRAY_BUFFER 0x8893
+#define GL_ARRAY_BUFFER_BINDING 0x8894
+#define GL_ELEMENT_ARRAY_BUFFER_BINDING 0x8895
+
+#define GL_STREAM_DRAW 0x88E0
+#define GL_STATIC_DRAW 0x88E4
+#define GL_DYNAMIC_DRAW 0x88E8
+
+#define GL_BUFFER_SIZE 0x8764
+#define GL_BUFFER_USAGE 0x8765
+
+#define GL_CURRENT_VERTEX_ATTRIB 0x8626
+
+/* CullFaceMode */
+#define GL_FRONT 0x0404
+#define GL_BACK 0x0405
+#define GL_FRONT_AND_BACK 0x0408
+
+/* DepthFunction */
+/* GL_NEVER */
+/* GL_LESS */
+/* GL_EQUAL */
+/* GL_LEQUAL */
+/* GL_GREATER */
+/* GL_NOTEQUAL */
+/* GL_GEQUAL */
+/* GL_ALWAYS */
+
+/* EnableCap */
+#define GL_TEXTURE_2D 0x0DE1
+#define GL_CULL_FACE 0x0B44
+#define GL_BLEND 0x0BE2
+#define GL_DITHER 0x0BD0
+#define GL_STENCIL_TEST 0x0B90
+#define GL_DEPTH_TEST 0x0B71
+#define GL_SCISSOR_TEST 0x0C11
+#define GL_POLYGON_OFFSET_FILL 0x8037
+#define GL_SAMPLE_ALPHA_TO_COVERAGE 0x809E
+#define GL_SAMPLE_COVERAGE 0x80A0
+
+/* ErrorCode */
+#define GL_NO_ERROR 0
+#define GL_INVALID_ENUM 0x0500
+#define GL_INVALID_VALUE 0x0501
+#define GL_INVALID_OPERATION 0x0502
+#define GL_OUT_OF_MEMORY 0x0505
+
+/* FrontFaceDirection */
+#define GL_CW 0x0900
+#define GL_CCW 0x0901
+
+/* GetPName */
+#define GL_LINE_WIDTH 0x0B21
+#define GL_ALIASED_POINT_SIZE_RANGE 0x846D
+#define GL_ALIASED_LINE_WIDTH_RANGE 0x846E
+#define GL_CULL_FACE_MODE 0x0B45
+#define GL_FRONT_FACE 0x0B46
+#define GL_DEPTH_RANGE 0x0B70
+#define GL_DEPTH_WRITEMASK 0x0B72
+#define GL_DEPTH_CLEAR_VALUE 0x0B73
+#define GL_DEPTH_FUNC 0x0B74
+#define GL_STENCIL_CLEAR_VALUE 0x0B91
+#define GL_STENCIL_FUNC 0x0B92
+#define GL_STENCIL_FAIL 0x0B94
+#define GL_STENCIL_PASS_DEPTH_FAIL 0x0B95
+#define GL_STENCIL_PASS_DEPTH_PASS 0x0B96
+#define GL_STENCIL_REF 0x0B97
+#define GL_STENCIL_VALUE_MASK 0x0B93
+#define GL_STENCIL_WRITEMASK 0x0B98
+#define GL_STENCIL_BACK_FUNC 0x8800
+#define GL_STENCIL_BACK_FAIL 0x8801
+#define GL_STENCIL_BACK_PASS_DEPTH_FAIL 0x8802
+#define GL_STENCIL_BACK_PASS_DEPTH_PASS 0x8803
+#define GL_STENCIL_BACK_REF 0x8CA3
+#define GL_STENCIL_BACK_VALUE_MASK 0x8CA4
+#define GL_STENCIL_BACK_WRITEMASK 0x8CA5
+#define GL_VIEWPORT 0x0BA2
+#define GL_SCISSOR_BOX 0x0C10
+/* GL_SCISSOR_TEST */
+#define GL_COLOR_CLEAR_VALUE 0x0C22
+#define GL_COLOR_WRITEMASK 0x0C23
+#define GL_UNPACK_ALIGNMENT 0x0CF5
+#define GL_PACK_ALIGNMENT 0x0D05
+#define GL_MAX_TEXTURE_SIZE 0x0D33
+#define GL_MAX_VIEWPORT_DIMS 0x0D3A
+#define GL_SUBPIXEL_BITS 0x0D50
+#define GL_RED_BITS 0x0D52
+#define GL_GREEN_BITS 0x0D53
+#define GL_BLUE_BITS 0x0D54
+#define GL_ALPHA_BITS 0x0D55
+#define GL_DEPTH_BITS 0x0D56
+#define GL_STENCIL_BITS 0x0D57
+#define GL_POLYGON_OFFSET_UNITS 0x2A00
+/* GL_POLYGON_OFFSET_FILL */
+#define GL_POLYGON_OFFSET_FACTOR 0x8038
+#define GL_TEXTURE_BINDING_2D 0x8069
+#define GL_SAMPLE_BUFFERS 0x80A8
+#define GL_SAMPLES 0x80A9
+#define GL_SAMPLE_COVERAGE_VALUE 0x80AA
+#define GL_SAMPLE_COVERAGE_INVERT 0x80AB
+
+/* GetTextureParameter */
+/* GL_TEXTURE_MAG_FILTER */
+/* GL_TEXTURE_MIN_FILTER */
+/* GL_TEXTURE_WRAP_S */
+/* GL_TEXTURE_WRAP_T */
+
+#define GL_NUM_COMPRESSED_TEXTURE_FORMATS 0x86A2
+#define GL_COMPRESSED_TEXTURE_FORMATS 0x86A3
+
+/* HintMode */
+#define GL_DONT_CARE 0x1100
+#define GL_FASTEST 0x1101
+#define GL_NICEST 0x1102
+
+/* HintTarget */
+#define GL_GENERATE_MIPMAP_HINT 0x8192
+
+/* DataType */
+#define GL_BYTE 0x1400
+#define GL_UNSIGNED_BYTE 0x1401
+#define GL_SHORT 0x1402
+#define GL_UNSIGNED_SHORT 0x1403
+#define GL_INT 0x1404
+#define GL_UNSIGNED_INT 0x1405
+#define GL_FLOAT 0x1406
+#define GL_FIXED 0x140C
+
+/* PixelFormat */
+#define GL_DEPTH_COMPONENT 0x1902
+#define GL_ALPHA 0x1906
+#define GL_RGB 0x1907
+#define GL_RGBA 0x1908
+#define GL_LUMINANCE 0x1909
+#define GL_LUMINANCE_ALPHA 0x190A
+
+/* PixelType */
+/* GL_UNSIGNED_BYTE */
+#define GL_UNSIGNED_SHORT_4_4_4_4 0x8033
+#define GL_UNSIGNED_SHORT_5_5_5_1 0x8034
+#define GL_UNSIGNED_SHORT_5_6_5 0x8363
+
+/* Shaders */
+#define GL_FRAGMENT_SHADER 0x8B30
+#define GL_VERTEX_SHADER 0x8B31
+#define GL_MAX_VERTEX_ATTRIBS 0x8869
+#define GL_MAX_VERTEX_UNIFORM_VECTORS 0x8DFB
+#define GL_MAX_VARYING_VECTORS 0x8DFC
+#define GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D
+#define GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS 0x8B4C
+#define GL_MAX_TEXTURE_IMAGE_UNITS 0x8872
+#define GL_MAX_FRAGMENT_UNIFORM_VECTORS 0x8DFD
+#define GL_SHADER_TYPE 0x8B4F
+#define GL_DELETE_STATUS 0x8B80
+#define GL_LINK_STATUS 0x8B82
+#define GL_VALIDATE_STATUS 0x8B83
+#define GL_ATTACHED_SHADERS 0x8B85
+#define GL_ACTIVE_UNIFORMS 0x8B86
+#define GL_ACTIVE_UNIFORM_MAX_LENGTH 0x8B87
+#define GL_ACTIVE_ATTRIBUTES 0x8B89
+#define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH 0x8B8A
+#define GL_SHADING_LANGUAGE_VERSION 0x8B8C
+#define GL_CURRENT_PROGRAM 0x8B8D
+
+/* StencilFunction */
+#define GL_NEVER 0x0200
+#define GL_LESS 0x0201
+#define GL_EQUAL 0x0202
+#define GL_LEQUAL 0x0203
+#define GL_GREATER 0x0204
+#define GL_NOTEQUAL 0x0205
+#define GL_GEQUAL 0x0206
+#define GL_ALWAYS 0x0207
+
+/* StencilOp */
+/* GL_ZERO */
+#define GL_KEEP 0x1E00
+#define GL_REPLACE 0x1E01
+#define GL_INCR 0x1E02
+#define GL_DECR 0x1E03
+#define GL_INVERT 0x150A
+#define GL_INCR_WRAP 0x8507
+#define GL_DECR_WRAP 0x8508
+
+/* StringName */
+#define GL_VENDOR 0x1F00
+#define GL_RENDERER 0x1F01
+#define GL_VERSION 0x1F02
+#define GL_EXTENSIONS 0x1F03
+
+/* TextureMagFilter */
+#define GL_NEAREST 0x2600
+#define GL_LINEAR 0x2601
+
+/* TextureMinFilter */
+/* GL_NEAREST */
+/* GL_LINEAR */
+#define GL_NEAREST_MIPMAP_NEAREST 0x2700
+#define GL_LINEAR_MIPMAP_NEAREST 0x2701
+#define GL_NEAREST_MIPMAP_LINEAR 0x2702
+#define GL_LINEAR_MIPMAP_LINEAR 0x2703
+
+/* TextureParameterName */
+#define GL_TEXTURE_MAG_FILTER 0x2800
+#define GL_TEXTURE_MIN_FILTER 0x2801
+#define GL_TEXTURE_WRAP_S 0x2802
+#define GL_TEXTURE_WRAP_T 0x2803
+
+/* TextureTarget */
+/* GL_TEXTURE_2D */
+#define GL_TEXTURE 0x1702
+
+#define GL_TEXTURE_CUBE_MAP 0x8513
+#define GL_TEXTURE_BINDING_CUBE_MAP 0x8514
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_X 0x8515
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X 0x8516
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y 0x8517
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y 0x8518
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z 0x8519
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z 0x851A
+#define GL_MAX_CUBE_MAP_TEXTURE_SIZE 0x851C
+
+/* TextureUnit */
+#define GL_TEXTURE0 0x84C0
+#define GL_TEXTURE1 0x84C1
+#define GL_TEXTURE2 0x84C2
+#define GL_TEXTURE3 0x84C3
+#define GL_TEXTURE4 0x84C4
+#define GL_TEXTURE5 0x84C5
+#define GL_TEXTURE6 0x84C6
+#define GL_TEXTURE7 0x84C7
+#define GL_TEXTURE8 0x84C8
+#define GL_TEXTURE9 0x84C9
+#define GL_TEXTURE10 0x84CA
+#define GL_TEXTURE11 0x84CB
+#define GL_TEXTURE12 0x84CC
+#define GL_TEXTURE13 0x84CD
+#define GL_TEXTURE14 0x84CE
+#define GL_TEXTURE15 0x84CF
+#define GL_TEXTURE16 0x84D0
+#define GL_TEXTURE17 0x84D1
+#define GL_TEXTURE18 0x84D2
+#define GL_TEXTURE19 0x84D3
+#define GL_TEXTURE20 0x84D4
+#define GL_TEXTURE21 0x84D5
+#define GL_TEXTURE22 0x84D6
+#define GL_TEXTURE23 0x84D7
+#define GL_TEXTURE24 0x84D8
+#define GL_TEXTURE25 0x84D9
+#define GL_TEXTURE26 0x84DA
+#define GL_TEXTURE27 0x84DB
+#define GL_TEXTURE28 0x84DC
+#define GL_TEXTURE29 0x84DD
+#define GL_TEXTURE30 0x84DE
+#define GL_TEXTURE31 0x84DF
+#define GL_ACTIVE_TEXTURE 0x84E0
+
+/* TextureWrapMode */
+#define GL_REPEAT 0x2901
+#define GL_CLAMP_TO_EDGE 0x812F
+#define GL_MIRRORED_REPEAT 0x8370
+
+/* Uniform Types */
+#define GL_FLOAT_VEC2 0x8B50
+#define GL_FLOAT_VEC3 0x8B51
+#define GL_FLOAT_VEC4 0x8B52
+#define GL_INT_VEC2 0x8B53
+#define GL_INT_VEC3 0x8B54
+#define GL_INT_VEC4 0x8B55
+#define GL_BOOL 0x8B56
+#define GL_BOOL_VEC2 0x8B57
+#define GL_BOOL_VEC3 0x8B58
+#define GL_BOOL_VEC4 0x8B59
+#define GL_FLOAT_MAT2 0x8B5A
+#define GL_FLOAT_MAT3 0x8B5B
+#define GL_FLOAT_MAT4 0x8B5C
+#define GL_SAMPLER_2D 0x8B5E
+#define GL_SAMPLER_CUBE 0x8B60
+
+/* Vertex Arrays */
+#define GL_VERTEX_ATTRIB_ARRAY_ENABLED 0x8622
+#define GL_VERTEX_ATTRIB_ARRAY_SIZE 0x8623
+#define GL_VERTEX_ATTRIB_ARRAY_STRIDE 0x8624
+#define GL_VERTEX_ATTRIB_ARRAY_TYPE 0x8625
+#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A
+#define GL_VERTEX_ATTRIB_ARRAY_POINTER 0x8645
+#define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING 0x889F
+
+/* Read Format */
+#define GL_IMPLEMENTATION_COLOR_READ_TYPE 0x8B9A
+#define GL_IMPLEMENTATION_COLOR_READ_FORMAT 0x8B9B
+
+/* Shader Source */
+#define GL_COMPILE_STATUS 0x8B81
+#define GL_INFO_LOG_LENGTH 0x8B84
+#define GL_SHADER_SOURCE_LENGTH 0x8B88
+#define GL_SHADER_COMPILER 0x8DFA
+
+/* Shader Binary */
+#define GL_PLATFORM_BINARY 0x8D63
+#define GL_SHADER_BINARY_FORMATS 0x8DF8
+#define GL_NUM_SHADER_BINARY_FORMATS 0x8DF9
+
+/* Shader Precision-Specified Types */
+#define GL_LOW_FLOAT 0x8DF0
+#define GL_MEDIUM_FLOAT 0x8DF1
+#define GL_HIGH_FLOAT 0x8DF2
+#define GL_LOW_INT 0x8DF3
+#define GL_MEDIUM_INT 0x8DF4
+#define GL_HIGH_INT 0x8DF5
+
+/* Framebuffer Object. */
+#define GL_FRAMEBUFFER 0x8D40
+#define GL_RENDERBUFFER 0x8D41
+
+#define GL_RGBA4 0x8056
+#define GL_RGB5_A1 0x8057
+#define GL_RGB565 0x8D62
+#define GL_DEPTH_COMPONENT16 0x81A5
+#define GL_STENCIL_INDEX 0x1901
+#define GL_STENCIL_INDEX8 0x8D48
+
+#define GL_RENDERBUFFER_WIDTH 0x8D42
+#define GL_RENDERBUFFER_HEIGHT 0x8D43
+#define GL_RENDERBUFFER_INTERNAL_FORMAT 0x8D44
+#define GL_RENDERBUFFER_RED_SIZE 0x8D50
+#define GL_RENDERBUFFER_GREEN_SIZE 0x8D51
+#define GL_RENDERBUFFER_BLUE_SIZE 0x8D52
+#define GL_RENDERBUFFER_ALPHA_SIZE 0x8D53
+#define GL_RENDERBUFFER_DEPTH_SIZE 0x8D54
+#define GL_RENDERBUFFER_STENCIL_SIZE 0x8D55
+
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE 0x8CD0
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME 0x8CD1
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL 0x8CD2
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE 0x8CD3
+
+#define GL_COLOR_ATTACHMENT0 0x8CE0
+#define GL_DEPTH_ATTACHMENT 0x8D00
+#define GL_STENCIL_ATTACHMENT 0x8D20
+
+#define GL_FRAMEBUFFER_COMPLETE 0x8CD5
+#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT 0x8CD6
+#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
+#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS 0x8CD9
+#define GL_FRAMEBUFFER_INCOMPLETE_FORMATS 0x8CDA
+#define GL_FRAMEBUFFER_UNSUPPORTED 0x8CDD
+
+#define GL_FRAMEBUFFER_BINDING 0x8CA6
+#define GL_RENDERBUFFER_BINDING 0x8CA7
+#define GL_MAX_RENDERBUFFER_SIZE 0x84E8
+
+#define GL_INVALID_FRAMEBUFFER_OPERATION 0x0506
+
+/*-------------------------------------------------------------------------
+ * GL core functions.
+ *-----------------------------------------------------------------------*/
+
+GL_APICALL void GL_APIENTRY glActiveTexture (GLenum texture);
+GL_APICALL void GL_APIENTRY glAttachShader (GLuint program, GLuint shader);
+GL_APICALL void GL_APIENTRY glBindAttribLocation (GLuint program, GLuint index, const char* name);
+GL_APICALL void GL_APIENTRY glBindBuffer (GLenum target, GLuint buffer);
+GL_APICALL void GL_APIENTRY glBindFramebuffer (GLenum target, GLuint framebuffer);
+GL_APICALL void GL_APIENTRY glBindRenderbuffer (GLenum target, GLuint renderbuffer);
+GL_APICALL void GL_APIENTRY glBindTexture (GLenum target, GLuint texture);
+GL_APICALL void GL_APIENTRY glBlendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
+GL_APICALL void GL_APIENTRY glBlendEquation( GLenum mode );
+GL_APICALL void GL_APIENTRY glBlendEquationSeparate(GLenum modeRGB, GLenum modeAlpha);
+GL_APICALL void GL_APIENTRY glBlendFunc (GLenum sfactor, GLenum dfactor);
+GL_APICALL void GL_APIENTRY glBlendFuncSeparate (GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
+GL_APICALL void GL_APIENTRY glBufferData (GLenum target, GLsizeiptr size, const void* data, GLenum usage);
+GL_APICALL void GL_APIENTRY glBufferSubData (GLenum target, GLintptr offset, GLsizeiptr size, const void* data);
+GL_APICALL GLenum GL_APIENTRY glCheckFramebufferStatus (GLenum target);
+GL_APICALL void GL_APIENTRY glClear (GLbitfield mask);
+GL_APICALL void GL_APIENTRY glClearColor (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
+GL_APICALL void GL_APIENTRY glClearDepthf (GLclampf depth);
+GL_APICALL void GL_APIENTRY glClearStencil (GLint s);
+GL_APICALL void GL_APIENTRY glColorMask (GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
+GL_APICALL void GL_APIENTRY glCompileShader (GLuint shader);
+GL_APICALL void GL_APIENTRY glCompressedTexImage2D (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void* data);
+GL_APICALL void GL_APIENTRY glCompressedTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const void* data);
+GL_APICALL void GL_APIENTRY glCopyTexImage2D (GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
+GL_APICALL void GL_APIENTRY glCopyTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+GL_APICALL GLuint GL_APIENTRY glCreateProgram (void);
+GL_APICALL GLuint GL_APIENTRY glCreateShader (GLenum type);
+GL_APICALL void GL_APIENTRY glCullFace (GLenum mode);
+GL_APICALL void GL_APIENTRY glDeleteBuffers (GLsizei n, const GLuint* buffers);
+GL_APICALL void GL_APIENTRY glDeleteFramebuffers (GLsizei n, const GLuint* framebuffers);
+GL_APICALL void GL_APIENTRY glDeleteProgram (GLuint program);
+GL_APICALL void GL_APIENTRY glDeleteRenderbuffers (GLsizei n, const GLuint* renderbuffers);
+GL_APICALL void GL_APIENTRY glDeleteShader (GLuint shader);
+GL_APICALL void GL_APIENTRY glDeleteTextures (GLsizei n, const GLuint* textures);
+GL_APICALL void GL_APIENTRY glDepthFunc (GLenum func);
+GL_APICALL void GL_APIENTRY glDepthMask (GLboolean flag);
+GL_APICALL void GL_APIENTRY glDepthRangef (GLclampf zNear, GLclampf zFar);
+GL_APICALL void GL_APIENTRY glDetachShader (GLuint program, GLuint shader);
+GL_APICALL void GL_APIENTRY glDisable (GLenum cap);
+GL_APICALL void GL_APIENTRY glDisableVertexAttribArray (GLuint index);
+GL_APICALL void GL_APIENTRY glDrawArrays (GLenum mode, GLint first, GLsizei count);
+GL_APICALL void GL_APIENTRY glDrawElements (GLenum mode, GLsizei count, GLenum type, const void* indices);
+GL_APICALL void GL_APIENTRY glEnable (GLenum cap);
+GL_APICALL void GL_APIENTRY glEnableVertexAttribArray (GLuint index);
+GL_APICALL void GL_APIENTRY glFinish (void);
+GL_APICALL void GL_APIENTRY glFlush (void);
+GL_APICALL void GL_APIENTRY glFramebufferRenderbuffer (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+GL_APICALL void GL_APIENTRY glFramebufferTexture2D (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+GL_APICALL void GL_APIENTRY glFrontFace (GLenum mode);
+GL_APICALL void GL_APIENTRY glGenBuffers (GLsizei n, GLuint* buffers);
+GL_APICALL void GL_APIENTRY glGenerateMipmap (GLenum target);
+GL_APICALL void GL_APIENTRY glGenFramebuffers (GLsizei n, GLuint* framebuffers);
+GL_APICALL void GL_APIENTRY glGenRenderbuffers (GLsizei n, GLuint* renderbuffers);
+GL_APICALL void GL_APIENTRY glGenTextures (GLsizei n, GLuint* textures);
+GL_APICALL void GL_APIENTRY glGetActiveAttrib (GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name);
+GL_APICALL void GL_APIENTRY glGetActiveUniform (GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, char* name);
+GL_APICALL void GL_APIENTRY glGetAttachedShaders (GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders);
+GL_APICALL int GL_APIENTRY glGetAttribLocation (GLuint program, const char* name);
+GL_APICALL void GL_APIENTRY glGetBooleanv (GLenum pname, GLboolean* params);
+GL_APICALL void GL_APIENTRY glGetBufferParameteriv (GLenum target, GLenum pname, GLint* params);
+GL_APICALL GLenum GL_APIENTRY glGetError (void);
+GL_APICALL void GL_APIENTRY glGetFloatv (GLenum pname, GLfloat* params);
+GL_APICALL void GL_APIENTRY glGetFramebufferAttachmentParameteriv (GLenum target, GLenum attachment, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetIntegerv (GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetProgramiv (GLuint program, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetProgramInfoLog (GLuint program, GLsizei bufsize, GLsizei* length, char* infolog);
+GL_APICALL void GL_APIENTRY glGetRenderbufferParameteriv (GLenum target, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetShaderiv (GLuint shader, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetShaderInfoLog (GLuint shader, GLsizei bufsize, GLsizei* length, char* infolog);
+GL_APICALL void GL_APIENTRY glGetShaderPrecisionFormat (GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision);
+GL_APICALL void GL_APIENTRY glGetShaderSource (GLuint shader, GLsizei bufsize, GLsizei* length, char* source);
+GL_APICALL const GLubyte* GL_APIENTRY glGetString (GLenum name);
+GL_APICALL void GL_APIENTRY glGetTexParameterfv (GLenum target, GLenum pname, GLfloat* params);
+GL_APICALL void GL_APIENTRY glGetTexParameteriv (GLenum target, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetUniformfv (GLuint program, GLint location, GLfloat* params);
+GL_APICALL void GL_APIENTRY glGetUniformiv (GLuint program, GLint location, GLint* params);
+GL_APICALL int GL_APIENTRY glGetUniformLocation (GLuint program, const char* name);
+GL_APICALL void GL_APIENTRY glGetVertexAttribfv (GLuint index, GLenum pname, GLfloat* params);
+GL_APICALL void GL_APIENTRY glGetVertexAttribiv (GLuint index, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetVertexAttribPointerv (GLuint index, GLenum pname, void** pointer);
+GL_APICALL void GL_APIENTRY glHint (GLenum target, GLenum mode);
+GL_APICALL GLboolean GL_APIENTRY glIsBuffer (GLuint buffer);
+GL_APICALL GLboolean GL_APIENTRY glIsEnabled (GLenum cap);
+GL_APICALL GLboolean GL_APIENTRY glIsFramebuffer (GLuint framebuffer);
+GL_APICALL GLboolean GL_APIENTRY glIsProgram (GLuint program);
+GL_APICALL GLboolean GL_APIENTRY glIsRenderbuffer (GLuint renderbuffer);
+GL_APICALL GLboolean GL_APIENTRY glIsShader (GLuint shader);
+GL_APICALL GLboolean GL_APIENTRY glIsTexture (GLuint texture);
+GL_APICALL void GL_APIENTRY glLineWidth (GLfloat width);
+GL_APICALL void GL_APIENTRY glLinkProgram (GLuint program);
+GL_APICALL void GL_APIENTRY glPixelStorei (GLenum pname, GLint param);
+GL_APICALL void GL_APIENTRY glPolygonOffset (GLfloat factor, GLfloat units);
+GL_APICALL void GL_APIENTRY glReadPixels (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels);
+GL_APICALL void GL_APIENTRY glReleaseShaderCompiler (void);
+GL_APICALL void GL_APIENTRY glRenderbufferStorage (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+GL_APICALL void GL_APIENTRY glSampleCoverage (GLclampf value, GLboolean invert);
+GL_APICALL void GL_APIENTRY glScissor (GLint x, GLint y, GLsizei width, GLsizei height);
+GL_APICALL void GL_APIENTRY glShaderBinary (GLint n, const GLuint* shaders, GLenum binaryformat, const void* binary, GLint length);
+GL_APICALL void GL_APIENTRY glShaderSource (GLuint shader, GLsizei count, const char** string, const GLint* length);
+GL_APICALL void GL_APIENTRY glStencilFunc (GLenum func, GLint ref, GLuint mask);
+GL_APICALL void GL_APIENTRY glStencilFuncSeparate (GLenum face, GLenum func, GLint ref, GLuint mask);
+GL_APICALL void GL_APIENTRY glStencilMask (GLuint mask);
+GL_APICALL void GL_APIENTRY glStencilMaskSeparate (GLenum face, GLuint mask);
+GL_APICALL void GL_APIENTRY glStencilOp (GLenum fail, GLenum zfail, GLenum zpass);
+GL_APICALL void GL_APIENTRY glStencilOpSeparate (GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
+GL_APICALL void GL_APIENTRY glTexImage2D (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void* pixels);
+GL_APICALL void GL_APIENTRY glTexParameterf (GLenum target, GLenum pname, GLfloat param);
+GL_APICALL void GL_APIENTRY glTexParameterfv (GLenum target, GLenum pname, const GLfloat* params);
+GL_APICALL void GL_APIENTRY glTexParameteri (GLenum target, GLenum pname, GLint param);
+GL_APICALL void GL_APIENTRY glTexParameteriv (GLenum target, GLenum pname, const GLint* params);
+GL_APICALL void GL_APIENTRY glTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void* pixels);
+GL_APICALL void GL_APIENTRY glUniform1f (GLint location, GLfloat x);
+GL_APICALL void GL_APIENTRY glUniform1fv (GLint location, GLsizei count, const GLfloat* v);
+GL_APICALL void GL_APIENTRY glUniform1i (GLint location, GLint x);
+GL_APICALL void GL_APIENTRY glUniform1iv (GLint location, GLsizei count, const GLint* v);
+GL_APICALL void GL_APIENTRY glUniform2f (GLint location, GLfloat x, GLfloat y);
+GL_APICALL void GL_APIENTRY glUniform2fv (GLint location, GLsizei count, const GLfloat* v);
+GL_APICALL void GL_APIENTRY glUniform2i (GLint location, GLint x, GLint y);
+GL_APICALL void GL_APIENTRY glUniform2iv (GLint location, GLsizei count, const GLint* v);
+GL_APICALL void GL_APIENTRY glUniform3f (GLint location, GLfloat x, GLfloat y, GLfloat z);
+GL_APICALL void GL_APIENTRY glUniform3fv (GLint location, GLsizei count, const GLfloat* v);
+GL_APICALL void GL_APIENTRY glUniform3i (GLint location, GLint x, GLint y, GLint z);
+GL_APICALL void GL_APIENTRY glUniform3iv (GLint location, GLsizei count, const GLint* v);
+GL_APICALL void GL_APIENTRY glUniform4f (GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+GL_APICALL void GL_APIENTRY glUniform4fv (GLint location, GLsizei count, const GLfloat* v);
+GL_APICALL void GL_APIENTRY glUniform4i (GLint location, GLint x, GLint y, GLint z, GLint w);
+GL_APICALL void GL_APIENTRY glUniform4iv (GLint location, GLsizei count, const GLint* v);
+GL_APICALL void GL_APIENTRY glUniformMatrix2fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+GL_APICALL void GL_APIENTRY glUniformMatrix3fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+GL_APICALL void GL_APIENTRY glUniformMatrix4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+GL_APICALL void GL_APIENTRY glUseProgram (GLuint program);
+GL_APICALL void GL_APIENTRY glValidateProgram (GLuint program);
+GL_APICALL void GL_APIENTRY glVertexAttrib1f (GLuint indx, GLfloat x);
+GL_APICALL void GL_APIENTRY glVertexAttrib1fv (GLuint indx, const GLfloat* values);
+GL_APICALL void GL_APIENTRY glVertexAttrib2f (GLuint indx, GLfloat x, GLfloat y);
+GL_APICALL void GL_APIENTRY glVertexAttrib2fv (GLuint indx, const GLfloat* values);
+GL_APICALL void GL_APIENTRY glVertexAttrib3f (GLuint indx, GLfloat x, GLfloat y, GLfloat z);
+GL_APICALL void GL_APIENTRY glVertexAttrib3fv (GLuint indx, const GLfloat* values);
+GL_APICALL void GL_APIENTRY glVertexAttrib4f (GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+GL_APICALL void GL_APIENTRY glVertexAttrib4fv (GLuint indx, const GLfloat* values);
+GL_APICALL void GL_APIENTRY glVertexAttribPointer (GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* ptr);
+GL_APICALL void GL_APIENTRY glViewport (GLint x, GLint y, GLsizei width, GLsizei height);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __gl2_h_ */
--- /dev/null
+#ifndef __gl2ext_h_
+#define __gl2ext_h_
+
+/* $Id: gl2ext.h 5767 2008-06-02 17:44:20Z benj $ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+** License Applicability. Except to the extent portions of this file are
+** made subject to an alternative license as permitted in the SGI Free
+** Software License B, Version 1.0 (the "License"), the contents of this
+** file are subject only to the provisions of the License. You may not use
+** this file except in compliance with the License. You may obtain a copy
+** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+**
+** http://oss.sgi.com/projects/FreeB
+**
+** Note that, as provided in the License, the Software is distributed on an
+** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+**
+** Original Code. The Original Code is: OpenGL Sample Implementation,
+** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+** Copyright in any portions created by third parties is as indicated
+** elsewhere herein. All Rights Reserved.
+**
+** Additional Notice Provisions: The application programming interfaces
+** established by SGI in conjunction with the Original Code are The
+** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+** Window System(R) (Version 1.3), released October 19, 1998. This software
+** was created using the OpenGL(R) version 1.2.1 Sample Implementation
+** published by SGI, but has not been independently verified as being
+** compliant with the OpenGL(R) version 1.2.1 Specification.
+*/
+
+#ifndef GL_APIENTRYP
+# define GL_APIENTRYP GL_APIENTRY*
+#endif
+
+/*------------------------------------------------------------------------*
+ * OES extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_OES_compressed_ETC1_RGB8_texture */
+#ifndef GL_OES_compressed_ETC1_RGB8_texture
+#define GL_ETC1_RGB8_OES 0x8D64
+#endif
+
+/* GL_OES_compressed_paletted_texture */
+#ifndef GL_OES_compressed_paletted_texture
+#define GL_PALETTE4_RGB8_OES 0x8B90
+#define GL_PALETTE4_RGBA8_OES 0x8B91
+#define GL_PALETTE4_R5_G6_B5_OES 0x8B92
+#define GL_PALETTE4_RGBA4_OES 0x8B93
+#define GL_PALETTE4_RGB5_A1_OES 0x8B94
+#define GL_PALETTE8_RGB8_OES 0x8B95
+#define GL_PALETTE8_RGBA8_OES 0x8B96
+#define GL_PALETTE8_R5_G6_B5_OES 0x8B97
+#define GL_PALETTE8_RGBA4_OES 0x8B98
+#define GL_PALETTE8_RGB5_A1_OES 0x8B99
+#endif
+
+/* GL_OES_EGL_image */
+#ifndef GL_OES_EGL_image
+typedef void* GLeglImageOES;
+#endif
+
+/* GL_OES_depth24 */
+#ifndef GL_OES_depth24
+#define GL_DEPTH_COMPONENT24_OES 0x81A6
+#endif
+
+/* GL_OES_depth32 */
+#ifndef GL_OES_depth32
+#define GL_DEPTH_COMPONENT32_OES 0x81A7
+#endif
+
+/* GL_OES_depth_texture */
+/* No new tokens introduced by this extension. */
+
+/* GL_OES_mapbuffer */
+#ifndef GL_OES_mapbuffer
+/* GL_READ_ONLY and GL_READ_WRITE not supported */
+#define GL_WRITE_ONLY_OES 0x88B9
+#define GL_BUFFER_ACCESS_OES 0x88BB
+#define GL_BUFFER_MAPPED_OES 0x88BC
+#define GL_BUFFER_MAP_POINTER_OES 0x88BD
+#endif
+
+/* GL_OES_packed_depth_stencil */
+#ifndef GL_OES_packed_depth_stencil
+#define GL_DEPTH_STENCIL_OES 0x84F9
+#define GL_UNSIGNED_INT_24_8_OES 0x84FA
+#define GL_DEPTH24_STENCIL8_OES 0x88F0
+#endif
+
+/* GL_OES_rgb8_rgba8 */
+#ifndef GL_OES_rgb8_rgba8
+#define GL_RGB8_OES 0x8051
+#define GL_RGBA8_OES 0x8058
+#endif
+
+/* GL_OES_standard_derivatives */
+#ifndef GL_OES_standard_derivatives
+#define GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES 0x8B8B
+#endif
+
+/* GL_OES_stencil1 */
+#ifndef GL_OES_stencil1
+#define GL_STENCIL_INDEX1_OES 0x8D46
+#endif
+
+/* GL_OES_stencil4 */
+#ifndef GL_OES_stencil4
+#define GL_STENCIL_INDEX4_OES 0x8D47
+#endif
+
+/* GL_OES_texture3D */
+#ifndef GL_OES_texture3D
+#define GL_TEXTURE_WRAP_R_OES 0x8072
+#define GL_TEXTURE_3D_OES 0x806F
+#define GL_TEXTURE_BINDING_3D_OES 0x806A
+#define GL_MAX_3D_TEXTURE_SIZE_OES 0x8073
+#define GL_SAMPLER_3D_OES 0x8B5F
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_OES 0x8CD4
+#endif
+
+/* GL_OES_texture_half_float */
+#ifndef GL_OES_texture_half_float
+#define GL_HALF_FLOAT_OES 0x8D61
+#endif
+
+/* GL_OES_vertex_half_float */
+/* GL_HALF_FLOAT_OES defined in GL_OES_texture_half_float already. */
+
+/* GL_OES_vertex_type_10_10_10_2 */
+#ifndef GL_OES_vertex_type_10_10_10_2
+#define GL_UNSIGNED_INT_10_10_10_2_OES 0x8DF6
+#define GL_INT_10_10_10_2_OES 0x8DF7
+#endif
+
+/* GL_OES_get_program_binary */
+#ifndef GL_OES_get_program_binary
+#define GL_PROGRAM_BINARY_LENGTH_OES 0x8741
+#define GL_NUM_PROGRAM_BINARY_FORMATS_OES 0x87FE
+#define GL_PROGRAM_BINARY_FORMATS_OES 0x87FF
+#endif
+
+/* GL_AMD_program_binary_Z400 */
+#ifndef GL_AMD_program_binary_Z400
+#define GL_Z400_BINARY_AMD 0x8740
+#endif
+
+/*------------------------------------------------------------------------*
+ * AMD extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_AMD_compressed_3DC_texture */
+#ifndef GL_AMD_compressed_3DC_texture
+#define GL_3DC_X_AMD 0x87F9
+#define GL_3DC_XY_AMD 0x87FA
+#endif
+
+/* GL_AMD_compressed_ATC_texture */
+#ifndef GL_AMD_compressed_ATC_texture
+#define GL_ATC_RGB_AMD 0x8C92
+#define GL_ATC_RGBA_EXPLICIT_ALPHA_AMD 0x8C93
+#define GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD 0x87EE
+#endif
+
+/*------------------------------------------------------------------------*
+ * EXT extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_EXT_texture_filter_anisotropic */
+#ifndef GL_EXT_texture_filter_anisotropic
+#define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE
+#define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF
+#endif
+
+/* GL_EXT_texture_type_2_10_10_10_REV */
+#ifndef GL_EXT_texture_type_2_10_10_10_REV
+#define GL_UNSIGNED_INT_2_10_10_10_REV_EXT 0x8368
+#endif
+
+/*------------------------------------------------------------------------*
+ * OES extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_OES_compressed_ETC1_RGB8_texture */
+#ifndef GL_OES_compressed_ETC1_RGB8_texture
+#define GL_OES_compressed_ETC1_RGB8_texture 1
+#endif
+
+/* GL_OES_compressed_paletted_texture */
+#ifndef GL_OES_compressed_paletted_texture
+#define GL_OES_compressed_paletted_texture 1
+#endif
+
+/* GL_OES_EGL_image */
+#ifndef GL_OES_EGL_image
+#define GL_OES_EGL_image 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glEGLImageTargetTexture2DOES (GLenum target, GLeglImageOES image);
+GL_APICALL void GL_APIENTRY glEGLImageTargetRenderbufferStorageOES (GLenum target, GLeglImageOES image);
+#endif
+typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) (GLenum target, GLeglImageOES image);
+typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC) (GLenum target, GLeglImageOES image);
+#endif
+
+/* GL_OES_depth24 */
+#ifndef GL_OES_depth24
+#define GL_OES_depth24 1
+#endif
+
+/* GL_OES_depth32 */
+#ifndef GL_OES_depth32
+#define GL_OES_depth32 1
+#endif
+
+/* GL_OES_depth_texture */
+#ifndef GL_OES_depth_texture
+#define GL_OES_depth_texture 1
+#endif
+
+/* GL_OES_element_index_uint */
+#ifndef GL_OES_element_index_uint
+#define GL_OES_element_index_uint 1
+#endif
+
+/* GL_OES_fbo_render_mipmap */
+#ifndef GL_OES_fbo_render_mipmap
+#define GL_OES_fbo_render_mipmap 1
+#endif
+
+/* GL_OES_fragment_precision_high */
+#ifndef GL_OES_fragment_precision_high
+#define GL_OES_fragment_precision_high 1
+#endif
+
+/* GL_OES_mapbuffer */
+#ifndef GL_OES_mapbuffer
+#define GL_OES_mapbuffer 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void* GL_APIENTRY glMapBufferOES (GLenum target, GLenum access);
+GL_APICALL GLboolean GL_APIENTRY glUnmapBufferOES (GLenum target);
+GL_APICALL void GL_APIENTRY glGetBufferPointervOES (GLenum target, GLenum pname, void** params);
+#endif
+typedef void* (GL_APIENTRYP PFNGLMAPBUFFEROESPROC) (GLenum target, GLenum access);
+typedef GLboolean (GL_APIENTRYP PFNGLUNMAPBUFFEROESPROC) (GLenum target);
+typedef void (GL_APIENTRYP PFNGLGETBUFFERPOINTERVOESPROC) (GLenum target, GLenum pname, void** params);
+#endif
+
+/* GL_OES_packed_depth_stencil */
+#ifndef GL_OES_packed_depth_stencil
+#define GL_OES_packed_depth_stencil 1
+#endif
+
+/* GL_OES_rgb8_rgba8 */
+#ifndef GL_OES_rgb8_rgba8
+#define GL_OES_rgb8_rgba8 1
+#endif
+
+/* GL_OES_standard_derivatives */
+#ifndef GL_OES_standard_derivatives
+#define GL_OES_standard_derivatives 1
+#endif
+
+/* GL_OES_stencil1 */
+#ifndef GL_OES_stencil1
+#define GL_OES_stencil1 1
+#endif
+
+/* GL_OES_stencil4 */
+#ifndef GL_OES_stencil4
+#define GL_OES_stencil4 1
+#endif
+
+/* GL_OES_texture_3D */
+#ifndef GL_OES_texture_3D
+#define GL_OES_texture_3D 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glTexImage3DOES (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const void* pixels);
+GL_APICALL void GL_APIENTRY glTexSubImage3DOES (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void* pixels);
+GL_APICALL void GL_APIENTRY glCopyTexSubImage3DOES (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+GL_APICALL void GL_APIENTRY glCompressedTexImage3DOES (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const void* data);
+GL_APICALL void GL_APIENTRY glCompressedTexSubImage3DOES (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const void* data);
+GL_APICALL void GL_APIENTRY glFramebufferTexture3DOES (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset);
+#endif
+typedef void (GL_APIENTRYP PFNGLTEXIMAGE3DOESPROC) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid* pixels);
+typedef void (GL_APIENTRYP PFNGLTEXSUBIMAGE3DOESPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void* pixels);
+typedef void (GL_APIENTRYP PFNGLCOPYTEXSUBIMAGE3DOESPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+typedef void (GL_APIENTRYP PFNGLCOMPRESSEDTEXIMAGE3DOESPROC) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const void* data);
+typedef void (GL_APIENTRYP PFNGLCOMPRESSEDTEXSUBIMAGE3DOESPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const void* data);
+typedef void (GL_APIENTRYP PFNGLFRAMEBUFFERTEXTURE3DOES) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset);
+#endif
+
+/* GL_OES_texture_float_linear */
+#ifndef GL_OES_texture_float_linear
+#define GL_OES_texture_float_linear 1
+#endif
+
+/* GL_OES_texture_half_float_linear */
+#ifndef GL_OES_texture_half_float_linear
+#define GL_OES_texture_half_float_linear 1
+#endif
+
+/* GL_OES_texture_float */
+#ifndef GL_OES_texture_float
+#define GL_OES_texture_float 1
+#endif
+
+/* GL_OES_texture_half_float */
+#ifndef GL_OES_texture_half_float
+#define GL_OES_texture_half_float 1
+#endif
+
+/* GL_OES_texture_npot */
+#ifndef GL_OES_texture_npot
+#define GL_OES_texture_npot 1
+#endif
+
+/* GL_OES_vertex_half_float */
+#ifndef GL_OES_vertex_half_float
+#define GL_OES_vertex_half_float 1
+#endif
+
+/* GL_OES_vertex_type_10_10_10_2 */
+#ifndef GL_OES_vertex_type_10_10_10_2
+#define GL_OES_vertex_type_10_10_10_2 1
+#endif
+
+/* GL_OES_get_program_binary */
+#ifndef GL_OES_get_program_binary
+#define GL_OES_get_program_binary 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glGetProgramBinaryOES (GLuint program, GLsizei bufSize, GLsizei *length, GLenum *binaryFormat, void *binary);
+GL_APICALL void GL_APIENTRY glProgramBinaryOES (GLuint program, GLenum binaryFormat, const void *binary, GLint length);
+#endif
+typedef void (GL_APIENTRYP PFNGLGETPROGRAMBINARYOESPROC) (GLuint program, GLsizei bufSize, GLsizei *length, GLenum *binaryFormat, void *binary);
+typedef void (GL_APIENTRYP PFNGLPROGRAMBINARYOESPROC) (GLuint program, GLenum binaryFormat, const void *binary, GLint length);
+#endif
+
+/*------------------------------------------------------------------------*
+ * AMD extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_AMD_compressed_3DC_texture */
+#ifndef GL_AMD_compressed_3DC_texture
+#define GL_AMD_compressed_3DC_texture 1
+#endif
+
+/* GL_AMD_compressed_ATC_texture */
+#ifndef GL_AMD_compressed_ATC_texture
+#define GL_AMD_compressed_ATC_texture 1
+#endif
+
+/* GL_AMD_program_binary_Z400 */
+#ifndef GL_AMD_program_binary_Z400
+#define GL_AMD_program_binary_Z400 1
+#endif
+
+/*------------------------------------------------------------------------*
+ * EXT extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_EXT_texture_filter_anisotropic */
+#ifndef GL_EXT_texture_filter_anisotropic
+#define GL_EXT_texture_filter_anisotropic 1
+#endif
+
+/* GL_EXT_texture_type_2_10_10_10_REV */
+#ifndef GL_EXT_texture_type_2_10_10_10_REV
+#define GL_EXT_texture_type_2_10_10_10_REV 1
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __gl2ext_h_ */
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