The Tor Browser / file revision

 /* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

  * You can obtain one at http://mozilla.org/MPL/2.0/.

  *

  * The origin of this IDL file is

  * https://www.khronos.org/registry/webgl/specs/latest/webgl.idl

  *

  * Copyright © 2012 Khronos Group

  */

 // WebGL IDL definitions scraped from the Khronos specification:

 // https://www.khronos.org/registry/webgl/specs/latest/

 //

 // This IDL depends on the typed array specification defined at:

 // https://www.khronos.org/registry/typedarray/specs/latest/typedarrays.idl

 typedef unsigned long  GLenum;

 typedef boolean        GLboolean;

 typedef unsigned long  GLbitfield;

 typedef byte           GLbyte;         /* 'byte' should be a signed 8 bit type. */

 typedef short          GLshort;

 typedef long           GLint;

 typedef long           GLsizei;

 typedef long long      GLintptr;

 typedef long long      GLsizeiptr;

 // Ideally the typedef below would use 'unsigned byte', but that doesn't currently exist in Web IDL.

 typedef octet          GLubyte;        /* 'octet' should be an unsigned 8 bit type. */

 typedef unsigned short GLushort;

 typedef unsigned long  GLuint;

 typedef unrestricted float GLfloat;

 typedef unrestricted float GLclampf;

 dictionary WebGLContextAttributes {

     // boolean alpha = true;

     // We deviate from the spec here.

     // If alpha isn't specified, we rely on a pref ("webgl.default-no-alpha")

     boolean alpha;

     boolean depth = true;

     boolean stencil = false;

     boolean antialias = true;

     boolean premultipliedAlpha = true;

     boolean preserveDrawingBuffer = false;

 };

 interface WebGLBuffer {

 };

 interface WebGLFramebuffer {

 };

 interface WebGLProgram {

 };

 interface WebGLRenderbuffer {

 };

 interface WebGLShader {

 };

 interface WebGLTexture {

 };

 interface WebGLUniformLocation {

 };

 interface WebGLVertexArray {

 };

 interface WebGLActiveInfo {

     readonly attribute GLint size;

     readonly attribute GLenum type;

     readonly attribute DOMString name;

 };

 interface WebGLShaderPrecisionFormat {

     readonly attribute GLint rangeMin;

     readonly attribute GLint rangeMax;

     readonly attribute GLint precision;

 };

 interface WebGLRenderingContext {

     /* ClearBufferMask */

     const GLenum DEPTH_BUFFER_BIT               = 0x00000100;

     const GLenum STENCIL_BUFFER_BIT             = 0x00000400;

     const GLenum COLOR_BUFFER_BIT               = 0x00004000;

     /* BeginMode */

     const GLenum POINTS                         = 0x0000;

     const GLenum LINES                          = 0x0001;

     const GLenum LINE_LOOP                      = 0x0002;

     const GLenum LINE_STRIP                     = 0x0003;

     const GLenum TRIANGLES                      = 0x0004;

     const GLenum TRIANGLE_STRIP                 = 0x0005;

     const GLenum TRIANGLE_FAN                   = 0x0006;

     /* AlphaFunction (not supported in ES20) */

     /*      NEVER */

     /*      LESS */

     /*      EQUAL */

     /*      LEQUAL */

     /*      GREATER */

     /*      NOTEQUAL */

     /*      GEQUAL */

     /*      ALWAYS */

     /* BlendingFactorDest */

     const GLenum ZERO                           = 0;

     const GLenum ONE                            = 1;

     const GLenum SRC_COLOR                      = 0x0300;

     const GLenum ONE_MINUS_SRC_COLOR            = 0x0301;

     const GLenum SRC_ALPHA                      = 0x0302;

     const GLenum ONE_MINUS_SRC_ALPHA            = 0x0303;

     const GLenum DST_ALPHA                      = 0x0304;

     const GLenum ONE_MINUS_DST_ALPHA            = 0x0305;

     /* BlendingFactorSrc */

     /*      ZERO */

     /*      ONE */

     const GLenum DST_COLOR                      = 0x0306;

     const GLenum ONE_MINUS_DST_COLOR            = 0x0307;

     const GLenum SRC_ALPHA_SATURATE             = 0x0308;

     /*      SRC_ALPHA */

     /*      ONE_MINUS_SRC_ALPHA */

     /*      DST_ALPHA */

     /*      ONE_MINUS_DST_ALPHA */

     /* BlendEquationSeparate */

     const GLenum FUNC_ADD                       = 0x8006;

     const GLenum BLEND_EQUATION                 = 0x8009;

     const GLenum BLEND_EQUATION_RGB             = 0x8009;   /* same as BLEND_EQUATION */

     const GLenum BLEND_EQUATION_ALPHA           = 0x883D;

     /* BlendSubtract */

     const GLenum FUNC_SUBTRACT                  = 0x800A;

     const GLenum FUNC_REVERSE_SUBTRACT          = 0x800B;

     /* Separate Blend Functions */

     const GLenum BLEND_DST_RGB                  = 0x80C8;

     const GLenum BLEND_SRC_RGB                  = 0x80C9;

     const GLenum BLEND_DST_ALPHA                = 0x80CA;

     const GLenum BLEND_SRC_ALPHA                = 0x80CB;

     const GLenum CONSTANT_COLOR                 = 0x8001;

     const GLenum ONE_MINUS_CONSTANT_COLOR       = 0x8002;

     const GLenum CONSTANT_ALPHA                 = 0x8003;

     const GLenum ONE_MINUS_CONSTANT_ALPHA       = 0x8004;

     const GLenum BLEND_COLOR                    = 0x8005;

     /* Buffer Objects */

     const GLenum ARRAY_BUFFER                   = 0x8892;

     const GLenum ELEMENT_ARRAY_BUFFER           = 0x8893;

     const GLenum ARRAY_BUFFER_BINDING           = 0x8894;

     const GLenum ELEMENT_ARRAY_BUFFER_BINDING   = 0x8895;

     const GLenum STREAM_DRAW                    = 0x88E0;

     const GLenum STATIC_DRAW                    = 0x88E4;

     const GLenum DYNAMIC_DRAW                   = 0x88E8;

     const GLenum BUFFER_SIZE                    = 0x8764;

     const GLenum BUFFER_USAGE                   = 0x8765;

     const GLenum CURRENT_VERTEX_ATTRIB          = 0x8626;

     /* CullFaceMode */

     const GLenum FRONT                          = 0x0404;

     const GLenum BACK                           = 0x0405;

     const GLenum FRONT_AND_BACK                 = 0x0408;

     /* DepthFunction */

     /*      NEVER */

     /*      LESS */

     /*      EQUAL */

     /*      LEQUAL */

     /*      GREATER */

     /*      NOTEQUAL */

     /*      GEQUAL */

     /*      ALWAYS */

     /* EnableCap */

     /* TEXTURE_2D */

     const GLenum CULL_FACE                      = 0x0B44;

     const GLenum BLEND                          = 0x0BE2;

     const GLenum DITHER                         = 0x0BD0;

     const GLenum STENCIL_TEST                   = 0x0B90;

     const GLenum DEPTH_TEST                     = 0x0B71;

     const GLenum SCISSOR_TEST                   = 0x0C11;

     const GLenum POLYGON_OFFSET_FILL            = 0x8037;

     const GLenum SAMPLE_ALPHA_TO_COVERAGE       = 0x809E;

     const GLenum SAMPLE_COVERAGE                = 0x80A0;

     /* ErrorCode */

     const GLenum NO_ERROR                       = 0;

     const GLenum INVALID_ENUM                   = 0x0500;

     const GLenum INVALID_VALUE                  = 0x0501;

     const GLenum INVALID_OPERATION              = 0x0502;

     const GLenum OUT_OF_MEMORY                  = 0x0505;

     /* FrontFaceDirection */

     const GLenum CW                             = 0x0900;

     const GLenum CCW                            = 0x0901;

     /* GetPName */

     const GLenum LINE_WIDTH                     = 0x0B21;

     const GLenum ALIASED_POINT_SIZE_RANGE       = 0x846D;

     const GLenum ALIASED_LINE_WIDTH_RANGE       = 0x846E;

     const GLenum CULL_FACE_MODE                 = 0x0B45;

     const GLenum FRONT_FACE                     = 0x0B46;

     const GLenum DEPTH_RANGE                    = 0x0B70;

     const GLenum DEPTH_WRITEMASK                = 0x0B72;

     const GLenum DEPTH_CLEAR_VALUE              = 0x0B73;

     const GLenum DEPTH_FUNC                     = 0x0B74;

     const GLenum STENCIL_CLEAR_VALUE            = 0x0B91;

     const GLenum STENCIL_FUNC                   = 0x0B92;

     const GLenum STENCIL_FAIL                   = 0x0B94;

     const GLenum STENCIL_PASS_DEPTH_FAIL        = 0x0B95;

     const GLenum STENCIL_PASS_DEPTH_PASS        = 0x0B96;

     const GLenum STENCIL_REF                    = 0x0B97;

     const GLenum STENCIL_VALUE_MASK             = 0x0B93;

     const GLenum STENCIL_WRITEMASK              = 0x0B98;

     const GLenum STENCIL_BACK_FUNC              = 0x8800;

     const GLenum STENCIL_BACK_FAIL              = 0x8801;

     const GLenum STENCIL_BACK_PASS_DEPTH_FAIL   = 0x8802;

     const GLenum STENCIL_BACK_PASS_DEPTH_PASS   = 0x8803;

     const GLenum STENCIL_BACK_REF               = 0x8CA3;

     const GLenum STENCIL_BACK_VALUE_MASK        = 0x8CA4;

     const GLenum STENCIL_BACK_WRITEMASK         = 0x8CA5;

     const GLenum VIEWPORT                       = 0x0BA2;

     const GLenum SCISSOR_BOX                    = 0x0C10;

     /*      SCISSOR_TEST */

     const GLenum COLOR_CLEAR_VALUE              = 0x0C22;

     const GLenum COLOR_WRITEMASK                = 0x0C23;

     const GLenum UNPACK_ALIGNMENT               = 0x0CF5;

     const GLenum PACK_ALIGNMENT                 = 0x0D05;

     const GLenum MAX_TEXTURE_SIZE               = 0x0D33;

     const GLenum MAX_VIEWPORT_DIMS              = 0x0D3A;

     const GLenum SUBPIXEL_BITS                  = 0x0D50;

     const GLenum RED_BITS                       = 0x0D52;

     const GLenum GREEN_BITS                     = 0x0D53;

     const GLenum BLUE_BITS                      = 0x0D54;

     const GLenum ALPHA_BITS                     = 0x0D55;

     const GLenum DEPTH_BITS                     = 0x0D56;

     const GLenum STENCIL_BITS                   = 0x0D57;

     const GLenum POLYGON_OFFSET_UNITS           = 0x2A00;

     /*      POLYGON_OFFSET_FILL */

     const GLenum POLYGON_OFFSET_FACTOR          = 0x8038;

     const GLenum TEXTURE_BINDING_2D             = 0x8069;

     const GLenum SAMPLE_BUFFERS                 = 0x80A8;

     const GLenum SAMPLES                        = 0x80A9;

     const GLenum SAMPLE_COVERAGE_VALUE          = 0x80AA;

     const GLenum SAMPLE_COVERAGE_INVERT         = 0x80AB;

     /* GetTextureParameter */

     /*      TEXTURE_MAG_FILTER */

     /*      TEXTURE_MIN_FILTER */

     /*      TEXTURE_WRAP_S */

     /*      TEXTURE_WRAP_T */

     const GLenum COMPRESSED_TEXTURE_FORMATS     = 0x86A3;

     /* HintMode */

     const GLenum DONT_CARE                      = 0x1100;

     const GLenum FASTEST                        = 0x1101;

     const GLenum NICEST                         = 0x1102;

     /* HintTarget */

     const GLenum GENERATE_MIPMAP_HINT            = 0x8192;

     /* DataType */

     const GLenum BYTE                           = 0x1400;

     const GLenum UNSIGNED_BYTE                  = 0x1401;

     const GLenum SHORT                          = 0x1402;

     const GLenum UNSIGNED_SHORT                 = 0x1403;

     const GLenum INT                            = 0x1404;

     const GLenum UNSIGNED_INT                   = 0x1405;

     const GLenum FLOAT                          = 0x1406;

     /* PixelFormat */

     const GLenum DEPTH_COMPONENT                = 0x1902;

     const GLenum ALPHA                          = 0x1906;

     const GLenum RGB                            = 0x1907;

     const GLenum RGBA                           = 0x1908;

     const GLenum LUMINANCE                      = 0x1909;

     const GLenum LUMINANCE_ALPHA                = 0x190A;

     /* PixelType */

     /*      UNSIGNED_BYTE */

     const GLenum UNSIGNED_SHORT_4_4_4_4         = 0x8033;

     const GLenum UNSIGNED_SHORT_5_5_5_1         = 0x8034;

     const GLenum UNSIGNED_SHORT_5_6_5           = 0x8363;

     /* Shaders */

     const GLenum FRAGMENT_SHADER                  = 0x8B30;

     const GLenum VERTEX_SHADER                    = 0x8B31;

     const GLenum MAX_VERTEX_ATTRIBS               = 0x8869;

     const GLenum MAX_VERTEX_UNIFORM_VECTORS       = 0x8DFB;

     const GLenum MAX_VARYING_VECTORS              = 0x8DFC;

     const GLenum MAX_COMBINED_TEXTURE_IMAGE_UNITS = 0x8B4D;

     const GLenum MAX_VERTEX_TEXTURE_IMAGE_UNITS   = 0x8B4C;

     const GLenum MAX_TEXTURE_IMAGE_UNITS          = 0x8872;

     const GLenum MAX_FRAGMENT_UNIFORM_VECTORS     = 0x8DFD;

     const GLenum SHADER_TYPE                      = 0x8B4F;

     const GLenum DELETE_STATUS                    = 0x8B80;

     const GLenum LINK_STATUS                      = 0x8B82;

     const GLenum VALIDATE_STATUS                  = 0x8B83;

     const GLenum ATTACHED_SHADERS                 = 0x8B85;

     const GLenum ACTIVE_UNIFORMS                  = 0x8B86;

     const GLenum ACTIVE_ATTRIBUTES                = 0x8B89;

     const GLenum SHADING_LANGUAGE_VERSION         = 0x8B8C;

     const GLenum CURRENT_PROGRAM                  = 0x8B8D;

     /* StencilFunction */

     const GLenum NEVER                          = 0x0200;

     const GLenum LESS                           = 0x0201;

     const GLenum EQUAL                          = 0x0202;

     const GLenum LEQUAL                         = 0x0203;

     const GLenum GREATER                        = 0x0204;

     const GLenum NOTEQUAL                       = 0x0205;

     const GLenum GEQUAL                         = 0x0206;

     const GLenum ALWAYS                         = 0x0207;

     /* StencilOp */

     /*      ZERO */

     const GLenum KEEP                           = 0x1E00;

     const GLenum REPLACE                        = 0x1E01;

     const GLenum INCR                           = 0x1E02;

     const GLenum DECR                           = 0x1E03;

     const GLenum INVERT                         = 0x150A;

     const GLenum INCR_WRAP                      = 0x8507;

     const GLenum DECR_WRAP                      = 0x8508;

     /* StringName */

     const GLenum VENDOR                         = 0x1F00;

     const GLenum RENDERER                       = 0x1F01;

     const GLenum VERSION                        = 0x1F02;

     /* TextureMagFilter */

     const GLenum NEAREST                        = 0x2600;

     const GLenum LINEAR                         = 0x2601;

     /* TextureMinFilter */

     /*      NEAREST */

     /*      LINEAR */

     const GLenum NEAREST_MIPMAP_NEAREST         = 0x2700;

     const GLenum LINEAR_MIPMAP_NEAREST          = 0x2701;

     const GLenum NEAREST_MIPMAP_LINEAR          = 0x2702;

     const GLenum LINEAR_MIPMAP_LINEAR           = 0x2703;

     /* TextureParameterName */

     const GLenum TEXTURE_MAG_FILTER             = 0x2800;

     const GLenum TEXTURE_MIN_FILTER             = 0x2801;

     const GLenum TEXTURE_WRAP_S                 = 0x2802;

     const GLenum TEXTURE_WRAP_T                 = 0x2803;

     /* TextureTarget */

     const GLenum TEXTURE_2D                     = 0x0DE1;

     const GLenum TEXTURE                        = 0x1702;

     const GLenum TEXTURE_CUBE_MAP               = 0x8513;

     const GLenum TEXTURE_BINDING_CUBE_MAP       = 0x8514;

     const GLenum TEXTURE_CUBE_MAP_POSITIVE_X    = 0x8515;

     const GLenum TEXTURE_CUBE_MAP_NEGATIVE_X    = 0x8516;

     const GLenum TEXTURE_CUBE_MAP_POSITIVE_Y    = 0x8517;

     const GLenum TEXTURE_CUBE_MAP_NEGATIVE_Y    = 0x8518;

     const GLenum TEXTURE_CUBE_MAP_POSITIVE_Z    = 0x8519;

     const GLenum TEXTURE_CUBE_MAP_NEGATIVE_Z    = 0x851A;

     const GLenum MAX_CUBE_MAP_TEXTURE_SIZE      = 0x851C;

     /* TextureUnit */

     const GLenum TEXTURE0                       = 0x84C0;

     const GLenum TEXTURE1                       = 0x84C1;

     const GLenum TEXTURE2                       = 0x84C2;

     const GLenum TEXTURE3                       = 0x84C3;

     const GLenum TEXTURE4                       = 0x84C4;

     const GLenum TEXTURE5                       = 0x84C5;

     const GLenum TEXTURE6                       = 0x84C6;

     const GLenum TEXTURE7                       = 0x84C7;

     const GLenum TEXTURE8                       = 0x84C8;

     const GLenum TEXTURE9                       = 0x84C9;

     const GLenum TEXTURE10                      = 0x84CA;

     const GLenum TEXTURE11                      = 0x84CB;

     const GLenum TEXTURE12                      = 0x84CC;

     const GLenum TEXTURE13                      = 0x84CD;

     const GLenum TEXTURE14                      = 0x84CE;

     const GLenum TEXTURE15                      = 0x84CF;

     const GLenum TEXTURE16                      = 0x84D0;

     const GLenum TEXTURE17                      = 0x84D1;

     const GLenum TEXTURE18                      = 0x84D2;

     const GLenum TEXTURE19                      = 0x84D3;

     const GLenum TEXTURE20                      = 0x84D4;

     const GLenum TEXTURE21                      = 0x84D5;

     const GLenum TEXTURE22                      = 0x84D6;

     const GLenum TEXTURE23                      = 0x84D7;

     const GLenum TEXTURE24                      = 0x84D8;

     const GLenum TEXTURE25                      = 0x84D9;

     const GLenum TEXTURE26                      = 0x84DA;

     const GLenum TEXTURE27                      = 0x84DB;

     const GLenum TEXTURE28                      = 0x84DC;

     const GLenum TEXTURE29                      = 0x84DD;

     const GLenum TEXTURE30                      = 0x84DE;

     const GLenum TEXTURE31                      = 0x84DF;

     const GLenum ACTIVE_TEXTURE                 = 0x84E0;

     /* TextureWrapMode */

     const GLenum REPEAT                         = 0x2901;

     const GLenum CLAMP_TO_EDGE                  = 0x812F;

     const GLenum MIRRORED_REPEAT                = 0x8370;

     /* Uniform Types */

     const GLenum FLOAT_VEC2                     = 0x8B50;

     const GLenum FLOAT_VEC3                     = 0x8B51;

     const GLenum FLOAT_VEC4                     = 0x8B52;

     const GLenum INT_VEC2                       = 0x8B53;

     const GLenum INT_VEC3                       = 0x8B54;

     const GLenum INT_VEC4                       = 0x8B55;

     const GLenum BOOL                           = 0x8B56;

     const GLenum BOOL_VEC2                      = 0x8B57;

     const GLenum BOOL_VEC3                      = 0x8B58;

     const GLenum BOOL_VEC4                      = 0x8B59;

     const GLenum FLOAT_MAT2                     = 0x8B5A;

     const GLenum FLOAT_MAT3                     = 0x8B5B;

     const GLenum FLOAT_MAT4                     = 0x8B5C;

     const GLenum SAMPLER_2D                     = 0x8B5E;

     const GLenum SAMPLER_CUBE                   = 0x8B60;

     /* Vertex Arrays */

     const GLenum VERTEX_ATTRIB_ARRAY_ENABLED        = 0x8622;

     const GLenum VERTEX_ATTRIB_ARRAY_SIZE           = 0x8623;

     const GLenum VERTEX_ATTRIB_ARRAY_STRIDE         = 0x8624;

     const GLenum VERTEX_ATTRIB_ARRAY_TYPE           = 0x8625;

     const GLenum VERTEX_ATTRIB_ARRAY_NORMALIZED     = 0x886A;

     const GLenum VERTEX_ATTRIB_ARRAY_POINTER        = 0x8645;

     const GLenum VERTEX_ATTRIB_ARRAY_BUFFER_BINDING = 0x889F;

     /* Shader Source */

     const GLenum COMPILE_STATUS                 = 0x8B81;

     /* Shader Precision-Specified Types */

     const GLenum LOW_FLOAT                      = 0x8DF0;

     const GLenum MEDIUM_FLOAT                   = 0x8DF1;

     const GLenum HIGH_FLOAT                     = 0x8DF2;

     const GLenum LOW_INT                        = 0x8DF3;

     const GLenum MEDIUM_INT                     = 0x8DF4;

     const GLenum HIGH_INT                       = 0x8DF5;

     /* Framebuffer Object. */

     const GLenum FRAMEBUFFER                    = 0x8D40;

     const GLenum RENDERBUFFER                   = 0x8D41;

     const GLenum RGBA4                          = 0x8056;

     const GLenum RGB5_A1                        = 0x8057;

     const GLenum RGB565                         = 0x8D62;

     const GLenum DEPTH_COMPONENT16              = 0x81A5;

     const GLenum STENCIL_INDEX                  = 0x1901;

     const GLenum STENCIL_INDEX8                 = 0x8D48;

     const GLenum DEPTH_STENCIL                  = 0x84F9;

     const GLenum RENDERBUFFER_WIDTH             = 0x8D42;

     const GLenum RENDERBUFFER_HEIGHT            = 0x8D43;

     const GLenum RENDERBUFFER_INTERNAL_FORMAT   = 0x8D44;

     const GLenum RENDERBUFFER_RED_SIZE          = 0x8D50;

     const GLenum RENDERBUFFER_GREEN_SIZE        = 0x8D51;

     const GLenum RENDERBUFFER_BLUE_SIZE         = 0x8D52;

     const GLenum RENDERBUFFER_ALPHA_SIZE        = 0x8D53;

     const GLenum RENDERBUFFER_DEPTH_SIZE        = 0x8D54;

     const GLenum RENDERBUFFER_STENCIL_SIZE      = 0x8D55;

     const GLenum FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE           = 0x8CD0;

     const GLenum FRAMEBUFFER_ATTACHMENT_OBJECT_NAME           = 0x8CD1;

     const GLenum FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL         = 0x8CD2;

     const GLenum FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE = 0x8CD3;

     const GLenum COLOR_ATTACHMENT0              = 0x8CE0;

     const GLenum DEPTH_ATTACHMENT               = 0x8D00;

     const GLenum STENCIL_ATTACHMENT             = 0x8D20;

     const GLenum DEPTH_STENCIL_ATTACHMENT       = 0x821A;

     const GLenum NONE                           = 0;

     const GLenum FRAMEBUFFER_COMPLETE                      = 0x8CD5;

     const GLenum FRAMEBUFFER_INCOMPLETE_ATTACHMENT         = 0x8CD6;

     const GLenum FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = 0x8CD7;

     const GLenum FRAMEBUFFER_INCOMPLETE_DIMENSIONS         = 0x8CD9;

     const GLenum FRAMEBUFFER_UNSUPPORTED                   = 0x8CDD;

     const GLenum FRAMEBUFFER_BINDING            = 0x8CA6;

     const GLenum RENDERBUFFER_BINDING           = 0x8CA7;

     const GLenum MAX_RENDERBUFFER_SIZE          = 0x84E8;

     const GLenum INVALID_FRAMEBUFFER_OPERATION  = 0x0506;

     /* WebGL-specific enums */

     const GLenum UNPACK_FLIP_Y_WEBGL            = 0x9240;

     const GLenum UNPACK_PREMULTIPLY_ALPHA_WEBGL = 0x9241;

     const GLenum CONTEXT_LOST_WEBGL             = 0x9242;

     const GLenum UNPACK_COLORSPACE_CONVERSION_WEBGL = 0x9243;

     const GLenum BROWSER_DEFAULT_WEBGL          = 0x9244;

     // The canvas might actually be null in some cases, apparently.

     readonly attribute HTMLCanvasElement? canvas;

     readonly attribute GLsizei drawingBufferWidth;

     readonly attribute GLsizei drawingBufferHeight;

     [WebGLHandlesContextLoss] WebGLContextAttributes? getContextAttributes();

     [WebGLHandlesContextLoss] boolean isContextLost();

     sequence<DOMString>? getSupportedExtensions();

     [Throws]

     object? getExtension(DOMString name);

     void activeTexture(GLenum texture);

     void attachShader(WebGLProgram? program, WebGLShader? shader);

     void bindAttribLocation(WebGLProgram? program, GLuint index, DOMString name);

     void bindBuffer(GLenum target, WebGLBuffer? buffer);

     void bindFramebuffer(GLenum target, WebGLFramebuffer? framebuffer);

     void bindRenderbuffer(GLenum target, WebGLRenderbuffer? renderbuffer);

     void bindTexture(GLenum target, WebGLTexture? texture);

     void blendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);

     void blendEquation(GLenum mode);

     void blendEquationSeparate(GLenum modeRGB, GLenum modeAlpha);

     void blendFunc(GLenum sfactor, GLenum dfactor);

     void blendFuncSeparate(GLenum srcRGB, GLenum dstRGB,

                            GLenum srcAlpha, GLenum dstAlpha);

     void bufferData(GLenum target, GLsizeiptr size, GLenum usage);

     void bufferData(GLenum target, ArrayBufferView data, GLenum usage);

     void bufferData(GLenum target, ArrayBuffer? data, GLenum usage);

     void bufferSubData(GLenum target, GLintptr offset, ArrayBufferView data);

     void bufferSubData(GLenum target, GLintptr offset, ArrayBuffer? data);

     [WebGLHandlesContextLoss] GLenum checkFramebufferStatus(GLenum target);

     void clear(GLbitfield mask);

     void clearColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);

     void clearDepth(GLclampf depth);

     void clearStencil(GLint s);

     void colorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);

     void compileShader(WebGLShader? shader);

     void compressedTexImage2D(GLenum target, GLint level, GLenum internalformat,

                               GLsizei width, GLsizei height, GLint border,

                               ArrayBufferView data);

     void compressedTexSubImage2D(GLenum target, GLint level,

                                  GLint xoffset, GLint yoffset,

                                  GLsizei width, GLsizei height, GLenum format,

                                  ArrayBufferView data);

     void copyTexImage2D(GLenum target, GLint level, GLenum internalformat,

                         GLint x, GLint y, GLsizei width, GLsizei height,

                         GLint border);

     void copyTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,

                            GLint x, GLint y, GLsizei width, GLsizei height);

     WebGLBuffer? createBuffer();

     WebGLFramebuffer? createFramebuffer();

     WebGLProgram? createProgram();

     WebGLRenderbuffer? createRenderbuffer();

     WebGLShader? createShader(GLenum type);

     WebGLTexture? createTexture();

     void cullFace(GLenum mode);

     void deleteBuffer(WebGLBuffer? buffer);

     void deleteFramebuffer(WebGLFramebuffer? framebuffer);

     void deleteProgram(WebGLProgram? program);

     void deleteRenderbuffer(WebGLRenderbuffer? renderbuffer);

     void deleteShader(WebGLShader? shader);

     void deleteTexture(WebGLTexture? texture);

     void depthFunc(GLenum func);

     void depthMask(GLboolean flag);

     void depthRange(GLclampf zNear, GLclampf zFar);

     void detachShader(WebGLProgram? program, WebGLShader? shader);

     void disable(GLenum cap);

     void disableVertexAttribArray(GLuint index);

     void drawArrays(GLenum mode, GLint first, GLsizei count);

     void drawElements(GLenum mode, GLsizei count, GLenum type, GLintptr offset);

     void enable(GLenum cap);

     void enableVertexAttribArray(GLuint index);

     void finish();

     void flush();

     void framebufferRenderbuffer(GLenum target, GLenum attachment,

                                  GLenum renderbuffertarget,

                                  WebGLRenderbuffer? renderbuffer);

     void framebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget,

                               WebGLTexture? texture, GLint level);

     void frontFace(GLenum mode);

     void generateMipmap(GLenum target);

     [NewObject]

     WebGLActiveInfo? getActiveAttrib(WebGLProgram? program, GLuint index);

     [NewObject]

     WebGLActiveInfo? getActiveUniform(WebGLProgram? program, GLuint index);

     sequence<WebGLShader>? getAttachedShaders(WebGLProgram? program);

     [WebGLHandlesContextLoss] GLint getAttribLocation(WebGLProgram? program, DOMString name);

     any getBufferParameter(GLenum target, GLenum pname);

     [Throws]

     any getParameter(GLenum pname);

     [WebGLHandlesContextLoss] GLenum getError();

     [Throws]

     any getFramebufferAttachmentParameter(GLenum target, GLenum attachment,

                                           GLenum pname);

     any getProgramParameter(WebGLProgram? program, GLenum pname);

     DOMString? getProgramInfoLog(WebGLProgram? program);

     any getRenderbufferParameter(GLenum target, GLenum pname);

     any getShaderParameter(WebGLShader? shader, GLenum pname);

     [NewObject]

     WebGLShaderPrecisionFormat? getShaderPrecisionFormat(GLenum shadertype, GLenum precisiontype);

     DOMString? getShaderInfoLog(WebGLShader? shader);

     DOMString? getShaderSource(WebGLShader? shader);

     any getTexParameter(GLenum target, GLenum pname);

     any getUniform(WebGLProgram? program, WebGLUniformLocation? location);

     [NewObject]

     WebGLUniformLocation? getUniformLocation(WebGLProgram? program, DOMString name);

     [Throws]

     any getVertexAttrib(GLuint index, GLenum pname);

     [WebGLHandlesContextLoss] GLsizeiptr getVertexAttribOffset(GLuint index, GLenum pname);

     void hint(GLenum target, GLenum mode);

     [WebGLHandlesContextLoss] GLboolean isBuffer(WebGLBuffer? buffer);

     [WebGLHandlesContextLoss] GLboolean isEnabled(GLenum cap);

     [WebGLHandlesContextLoss] GLboolean isFramebuffer(WebGLFramebuffer? framebuffer);

     [WebGLHandlesContextLoss] GLboolean isProgram(WebGLProgram? program);

     [WebGLHandlesContextLoss] GLboolean isRenderbuffer(WebGLRenderbuffer? renderbuffer);

     [WebGLHandlesContextLoss] GLboolean isShader(WebGLShader? shader);

     [WebGLHandlesContextLoss] GLboolean isTexture(WebGLTexture? texture);

     void lineWidth(GLfloat width);

     void linkProgram(WebGLProgram? program);

     void pixelStorei(GLenum pname, GLint param);

     void polygonOffset(GLfloat factor, GLfloat units);

     [Throws]

     void readPixels(GLint x, GLint y, GLsizei width, GLsizei height,

                     GLenum format, GLenum type, ArrayBufferView? pixels);

     void renderbufferStorage(GLenum target, GLenum internalformat,

                              GLsizei width, GLsizei height);

     void sampleCoverage(GLclampf value, GLboolean invert);

     void scissor(GLint x, GLint y, GLsizei width, GLsizei height);

     void shaderSource(WebGLShader? shader, DOMString source);

     void stencilFunc(GLenum func, GLint ref, GLuint mask);

     void stencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask);

     void stencilMask(GLuint mask);

     void stencilMaskSeparate(GLenum face, GLuint mask);

     void stencilOp(GLenum fail, GLenum zfail, GLenum zpass);

     void stencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass);

     [Throws]

     void texImage2D(GLenum target, GLint level, GLenum internalformat,

                     GLsizei width, GLsizei height, GLint border, GLenum format,

                     GLenum type, ArrayBufferView? pixels);

     [Throws]

     void texImage2D(GLenum target, GLint level, GLenum internalformat,

                     GLenum format, GLenum type, ImageData? pixels);

     [Throws]

     void texImage2D(GLenum target, GLint level, GLenum internalformat,

                     GLenum format, GLenum type, HTMLImageElement image); // May throw DOMException

     [Throws]

     void texImage2D(GLenum target, GLint level, GLenum internalformat,

                     GLenum format, GLenum type, HTMLCanvasElement canvas); // May throw DOMException

     [Throws]

     void texImage2D(GLenum target, GLint level, GLenum internalformat,

                     GLenum format, GLenum type, HTMLVideoElement video); // May throw DOMException

     void texParameterf(GLenum target, GLenum pname, GLfloat param);

     void texParameteri(GLenum target, GLenum pname, GLint param);

     [Throws]

     void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,

                        GLsizei width, GLsizei height,

                        GLenum format, GLenum type, ArrayBufferView? pixels);

     [Throws]

     void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,

                        GLenum format, GLenum type, ImageData? pixels);

     [Throws]

     void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,

                        GLenum format, GLenum type, HTMLImageElement image); // May throw DOMException

     [Throws]

     void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,

                        GLenum format, GLenum type, HTMLCanvasElement canvas); // May throw DOMException

     [Throws]

     void texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,

                        GLenum format, GLenum type, HTMLVideoElement video); // May throw DOMException

     void uniform1f(WebGLUniformLocation? location, GLfloat x);

     void uniform1fv(WebGLUniformLocation? location, Float32Array v);

     void uniform1fv(WebGLUniformLocation? location, sequence<GLfloat> v);

     void uniform1i(WebGLUniformLocation? location, GLint x);

     void uniform1iv(WebGLUniformLocation? location, Int32Array v);

     void uniform1iv(WebGLUniformLocation? location, sequence<long> v);

     void uniform2f(WebGLUniformLocation? location, GLfloat x, GLfloat y);

     void uniform2fv(WebGLUniformLocation? location, Float32Array v);

     void uniform2fv(WebGLUniformLocation? location, sequence<GLfloat> v);

     void uniform2i(WebGLUniformLocation? location, GLint x, GLint y);

     void uniform2iv(WebGLUniformLocation? location, Int32Array v);

     void uniform2iv(WebGLUniformLocation? location, sequence<long> v);

     void uniform3f(WebGLUniformLocation? location, GLfloat x, GLfloat y, GLfloat z);

     void uniform3fv(WebGLUniformLocation? location, Float32Array v);

     void uniform3fv(WebGLUniformLocation? location, sequence<GLfloat> v);

     void uniform3i(WebGLUniformLocation? location, GLint x, GLint y, GLint z);

     void uniform3iv(WebGLUniformLocation? location, Int32Array v);

     void uniform3iv(WebGLUniformLocation? location, sequence<long> v);

     void uniform4f(WebGLUniformLocation? location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);

     void uniform4fv(WebGLUniformLocation? location, Float32Array v);

     void uniform4fv(WebGLUniformLocation? location, sequence<GLfloat> v);

     void uniform4i(WebGLUniformLocation? location, GLint x, GLint y, GLint z, GLint w);

     void uniform4iv(WebGLUniformLocation? location, Int32Array v);

     void uniform4iv(WebGLUniformLocation? location, sequence<long> v);

     void uniformMatrix2fv(WebGLUniformLocation? location, GLboolean transpose,

                           Float32Array value);

     void uniformMatrix2fv(WebGLUniformLocation? location, GLboolean transpose,

                           sequence<GLfloat> value);

     void uniformMatrix3fv(WebGLUniformLocation? location, GLboolean transpose,

                           Float32Array value);

     void uniformMatrix3fv(WebGLUniformLocation? location, GLboolean transpose,

                           sequence<GLfloat> value);

     void uniformMatrix4fv(WebGLUniformLocation? location, GLboolean transpose,

                           Float32Array value);

     void uniformMatrix4fv(WebGLUniformLocation? location, GLboolean transpose,

                           sequence<GLfloat> value);

     void useProgram(WebGLProgram? program);

     void validateProgram(WebGLProgram? program);

     void vertexAttrib1f(GLuint indx, GLfloat x);

     void vertexAttrib1fv(GLuint indx, Float32Array values);

     void vertexAttrib1fv(GLuint indx, sequence<GLfloat> values);

     void vertexAttrib2f(GLuint indx, GLfloat x, GLfloat y);

     void vertexAttrib2fv(GLuint indx, Float32Array values);

     void vertexAttrib2fv(GLuint indx, sequence<GLfloat> values);

     void vertexAttrib3f(GLuint indx, GLfloat x, GLfloat y, GLfloat z);

     void vertexAttrib3fv(GLuint indx, Float32Array values);

     void vertexAttrib3fv(GLuint indx, sequence<GLfloat> values);

     void vertexAttrib4f(GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w);

     void vertexAttrib4fv(GLuint indx, Float32Array values);

     void vertexAttrib4fv(GLuint indx, sequence<GLfloat> values);

     void vertexAttribPointer(GLuint indx, GLint size, GLenum type,

                              GLboolean normalized, GLsizei stride, GLintptr offset);

     void viewport(GLint x, GLint y, GLsizei width, GLsizei height);

 };

 /*[Constructor(DOMString type, optional WebGLContextEventInit eventInit)]

 interface WebGLContextEvent : Event {

     readonly attribute DOMString statusMessage;

     };*/

 // EventInit is defined in the DOM4 specification.

 /*dictionary WebGLContextEventInit : EventInit {

     DOMString statusMessage;

     };*/

 // specific extension interfaces

 [NoInterfaceObject]

 interface WebGLExtensionCompressedTextureS3TC

 {

     const GLenum COMPRESSED_RGB_S3TC_DXT1_EXT  = 0x83F0;

     const GLenum COMPRESSED_RGBA_S3TC_DXT1_EXT = 0x83F1;

     const GLenum COMPRESSED_RGBA_S3TC_DXT3_EXT = 0x83F2;

     const GLenum COMPRESSED_RGBA_S3TC_DXT5_EXT = 0x83F3;

 };

 [NoInterfaceObject]

 interface WebGLExtensionCompressedTextureATC

 {

     const GLenum COMPRESSED_RGB_ATC_WEBGL                     = 0x8C92;

     const GLenum COMPRESSED_RGBA_ATC_EXPLICIT_ALPHA_WEBGL     = 0x8C93;

     const GLenum COMPRESSED_RGBA_ATC_INTERPOLATED_ALPHA_WEBGL = 0x87EE;

 };

 [NoInterfaceObject]

 interface WebGLExtensionCompressedTextureETC1

 {

     const GLenum COMPRESSED_RGB_ETC1_WEBGL = 0x8D64;

 };

 [NoInterfaceObject]

 interface WebGLExtensionCompressedTexturePVRTC

 {

     const GLenum COMPRESSED_RGB_PVRTC_4BPPV1  = 0x8C00;

     const GLenum COMPRESSED_RGB_PVRTC_2BPPV1  = 0x8C01;

     const GLenum COMPRESSED_RGBA_PVRTC_4BPPV1 = 0x8C02;

     const GLenum COMPRESSED_RGBA_PVRTC_2BPPV1 = 0x8C03;

 };

 [NoInterfaceObject]

 interface WebGLExtensionDebugRendererInfo

 {

     const GLenum UNMASKED_VENDOR_WEBGL        = 0x9245;

     const GLenum UNMASKED_RENDERER_WEBGL      = 0x9246;

 };

 [NoInterfaceObject]

 interface WebGLExtensionDebugShaders

 {

     DOMString getTranslatedShaderSource(WebGLShader? shader);

 };

 [NoInterfaceObject]

 interface WebGLExtensionDepthTexture

 {

     const GLenum UNSIGNED_INT_24_8_WEBGL = 0x84FA;

 };

 [NoInterfaceObject]

 interface WebGLExtensionElementIndexUint

 {

 };

 [NoInterfaceObject]

 interface WebGLExtensionFragDepth

 {

 };

 [NoInterfaceObject]

 interface WebGLExtensionLoseContext {

     void loseContext();

     void restoreContext();

 };

 [NoInterfaceObject]

 interface WebGLExtensionTextureFilterAnisotropic

 {

     const GLenum TEXTURE_MAX_ANISOTROPY_EXT     = 0x84FE;

     const GLenum MAX_TEXTURE_MAX_ANISOTROPY_EXT = 0x84FF;

 };

 [NoInterfaceObject]

 interface WebGLExtensionSRGB

 {

     const GLenum SRGB_EXT                                  = 0x8C40;

     const GLenum SRGB_ALPHA_EXT                            = 0x8C42;

     const GLenum SRGB8_ALPHA8_EXT                          = 0x8C43;

     const GLenum FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT = 0x8210;

 };

 [NoInterfaceObject]

 interface WebGLExtensionStandardDerivatives {

     const GLenum FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B;

 };

 [NoInterfaceObject]

 interface WebGLExtensionTextureFloat

 {

 };

 [NoInterfaceObject]

 interface WebGLExtensionDrawBuffers {

     const GLenum COLOR_ATTACHMENT0_WEBGL     = 0x8CE0;

     const GLenum COLOR_ATTACHMENT1_WEBGL     = 0x8CE1;

     const GLenum COLOR_ATTACHMENT2_WEBGL     = 0x8CE2;

     const GLenum COLOR_ATTACHMENT3_WEBGL     = 0x8CE3;

     const GLenum COLOR_ATTACHMENT4_WEBGL     = 0x8CE4;

     const GLenum COLOR_ATTACHMENT5_WEBGL     = 0x8CE5;

     const GLenum COLOR_ATTACHMENT6_WEBGL     = 0x8CE6;

     const GLenum COLOR_ATTACHMENT7_WEBGL     = 0x8CE7;

     const GLenum COLOR_ATTACHMENT8_WEBGL     = 0x8CE8;

     const GLenum COLOR_ATTACHMENT9_WEBGL     = 0x8CE9;

     const GLenum COLOR_ATTACHMENT10_WEBGL    = 0x8CEA;

     const GLenum COLOR_ATTACHMENT11_WEBGL    = 0x8CEB;

     const GLenum COLOR_ATTACHMENT12_WEBGL    = 0x8CEC;

     const GLenum COLOR_ATTACHMENT13_WEBGL    = 0x8CED;

     const GLenum COLOR_ATTACHMENT14_WEBGL    = 0x8CEE;

     const GLenum COLOR_ATTACHMENT15_WEBGL    = 0x8CEF;

     const GLenum DRAW_BUFFER0_WEBGL          = 0x8825;

     const GLenum DRAW_BUFFER1_WEBGL          = 0x8826;

     const GLenum DRAW_BUFFER2_WEBGL          = 0x8827;

     const GLenum DRAW_BUFFER3_WEBGL          = 0x8828;

     const GLenum DRAW_BUFFER4_WEBGL          = 0x8829;

     const GLenum DRAW_BUFFER5_WEBGL          = 0x882A;

     const GLenum DRAW_BUFFER6_WEBGL          = 0x882B;

     const GLenum DRAW_BUFFER7_WEBGL          = 0x882C;

     const GLenum DRAW_BUFFER8_WEBGL          = 0x882D;

     const GLenum DRAW_BUFFER9_WEBGL          = 0x882E;

     const GLenum DRAW_BUFFER10_WEBGL         = 0x882F;

     const GLenum DRAW_BUFFER11_WEBGL         = 0x8830;

     const GLenum DRAW_BUFFER12_WEBGL         = 0x8831;

     const GLenum DRAW_BUFFER13_WEBGL         = 0x8832;

     const GLenum DRAW_BUFFER14_WEBGL         = 0x8833;

     const GLenum DRAW_BUFFER15_WEBGL         = 0x8834;

     const GLenum MAX_COLOR_ATTACHMENTS_WEBGL = 0x8CDF;

     const GLenum MAX_DRAW_BUFFERS_WEBGL      = 0x8824;

     void drawBuffersWEBGL(sequence<GLenum> buffers);

 };

 [NoInterfaceObject]

 interface WebGLExtensionTextureFloatLinear

 {

 };

 [NoInterfaceObject]

 interface WebGLExtensionTextureHalfFloat

 {

     const GLenum HALF_FLOAT_OES = 0x8D61;

 };

 [NoInterfaceObject]

 interface WebGLExtensionTextureHalfFloatLinear

 {

 };

 [NoInterfaceObject]

 interface WebGLExtensionColorBufferFloat

 {

     const GLenum RGBA32F_EXT = 0x8814;

     const GLenum RGB32F_EXT = 0x8815;

     const GLenum FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT = 0x8211;

     const GLenum UNSIGNED_NORMALIZED_EXT = 0x8C17;

 };

 [NoInterfaceObject]

 interface WebGLExtensionColorBufferHalfFloat

 {

     const GLenum RGBA16F_EXT = 0x881A;

     const GLenum RGB16F_EXT = 0x881B;

     const GLenum FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT = 0x8211;

     const GLenum UNSIGNED_NORMALIZED_EXT = 0x8C17;

 };

 [NoInterfaceObject]

 interface WebGLExtensionVertexArray {

     const GLenum VERTEX_ARRAY_BINDING_OES = 0x85B5;

     WebGLVertexArray? createVertexArrayOES();

     void deleteVertexArrayOES(WebGLVertexArray? arrayObject);

     [WebGLHandlesContextLoss] GLboolean isVertexArrayOES(WebGLVertexArray? arrayObject);

     void bindVertexArrayOES(WebGLVertexArray? arrayObject);

 };

 [NoInterfaceObject]

 interface WebGLExtensionInstancedArrays {

     const GLenum VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE = 0x88FE;

     void drawArraysInstancedANGLE(GLenum mode, GLint first, GLsizei count, GLsizei primcount);

     void drawElementsInstancedANGLE(GLenum mode, GLsizei count, GLenum type, GLintptr offset, GLsizei primcount);

     void vertexAttribDivisorANGLE(GLuint index, GLuint divisor);

 };