Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1237 insertions, 0 deletions

diff --git a/dom/webidl/WebGLRenderingContext.webidl b/dom/webidl/WebGLRenderingContext.webidl
new file mode 100644
index 0000000000..00585a06bf
--- /dev/null
+++ b/dom/webidl/WebGLRenderingContext.webidl
@@ -0,0 +1,1237 @@
+/* -*- 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;
+typedef unsigned long long GLuint64EXT;
+
+// The power preference settings are documented in the WebGLContextAttributes
+// section of the specification.
+enum WebGLPowerPreference { "default", "low-power", "high-performance" };
+enum PredefinedColorSpace { "srgb", "display-p3" };
+
+[GenerateInit]
+dictionary WebGLContextAttributes {
+    // We deviate from the spec for alpha and antialias:
+    // * alpha: Historically, we might use rgb565 instead of rgb(x)8, for
+    //          memory bandwidth optimization.
+    // * antialias: On Android, DPI is high and mem-bandwidth is low, so we
+    //              default to antialias:false if it's not set.
+    GLboolean alpha; // = true; // Default is controlled by webgl.default-no-alpha.
+    GLboolean depth = true;
+    GLboolean stencil = false;
+    GLboolean antialias; // = true; // Default is controlled by webgl.default-antialias.
+    GLboolean premultipliedAlpha = true;
+    GLboolean preserveDrawingBuffer = false;
+    GLboolean failIfMajorPerformanceCaveat = false;
+    WebGLPowerPreference powerPreference = "default";
+
+    // We are experimenting here, though this should be close to where we end up.
+    [Pref="webgl.colorspaces.prototype"]
+    PredefinedColorSpace colorSpace; // = "srgb"; Default is gfx::ColorSpace2::UNKNOWN for now.
+};
+
+[Exposed=(Window,Worker),
+ Func="mozilla::dom::OffscreenCanvas::PrefEnabledOnWorkerThread"]
+interface WebGLBuffer {
+};
+
+[Exposed=(Window,Worker),
+ Func="mozilla::dom::OffscreenCanvas::PrefEnabledOnWorkerThread"]
+interface WebGLFramebuffer {
+};
+
+[Exposed=(Window,Worker),
+ Func="mozilla::dom::OffscreenCanvas::PrefEnabledOnWorkerThread"]
+interface WebGLProgram {
+};
+
+[Exposed=(Window,Worker),
+ Func="mozilla::dom::OffscreenCanvas::PrefEnabledOnWorkerThread"]
+interface WebGLRenderbuffer {
+};
+
+[Exposed=(Window,Worker),
+ Func="mozilla::dom::OffscreenCanvas::PrefEnabledOnWorkerThread"]
+interface WebGLShader {
+};
+
+[Exposed=(Window,Worker),
+ Func="mozilla::dom::OffscreenCanvas::PrefEnabledOnWorkerThread"]
+interface WebGLTexture {
+};
+
+[Exposed=(Window,Worker),
+ Func="mozilla::dom::OffscreenCanvas::PrefEnabledOnWorkerThread"]
+interface WebGLUniformLocation {
+};
+
+[Exposed=(Window,Worker),
+ Func="mozilla::dom::OffscreenCanvas::PrefEnabledOnWorkerThread"]
+interface WebGLVertexArrayObject {
+};
+
+[Exposed=(Window,Worker),
+ Func="mozilla::dom::OffscreenCanvas::PrefEnabledOnWorkerThread"]
+interface WebGLActiveInfo {
+    readonly attribute GLint size;
+    readonly attribute GLenum type;
+    readonly attribute DOMString name;
+};
+
+[Exposed=(Window,Worker),
+ Func="mozilla::dom::OffscreenCanvas::PrefEnabledOnWorkerThread"]
+interface WebGLShaderPrecisionFormat {
+    readonly attribute GLint rangeMin;
+    readonly attribute GLint rangeMax;
+    readonly attribute GLint precision;
+};
+
+typedef ([AllowShared] Float32Array or sequence<GLfloat>) Float32List;
+typedef ([AllowShared] Int32Array or sequence<GLint>) Int32List;
+
+// Shared mixin for the things that WebGLRenderingContext and
+// WebGL2RenderingContext have in common.  This doesn't have all the things they
+// have in common, because we don't support splitting multiple overloads of the
+// same method across separate interfaces and pulling them in with "includes".
+[Exposed=(Window, Worker)]
+interface mixin WebGLRenderingContextBase {
+    /* 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;
+
+    /* Read Format */
+    const GLenum IMPLEMENTATION_COLOR_READ_TYPE   = 0x8B9A;
+    const GLenum IMPLEMENTATION_COLOR_READ_FORMAT = 0x8B9B;
+
+    /* 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_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 CanvasSource? canvas;
+    readonly attribute GLsizei drawingBufferWidth;
+    readonly attribute GLsizei drawingBufferHeight;
+
+    [WebGLHandlesContextLoss] WebGLContextAttributes? getContextAttributes();
+    [WebGLHandlesContextLoss] boolean isContextLost();
+
+    [NeedsCallerType]
+    sequence<DOMString>? getSupportedExtensions();
+
+    [Throws, NeedsCallerType]
+    object? getExtension(DOMString name);
+
+    undefined activeTexture(GLenum texture);
+    undefined attachShader(WebGLProgram program, WebGLShader shader);
+    undefined bindAttribLocation(WebGLProgram program, GLuint index, DOMString name);
+    undefined bindBuffer(GLenum target, WebGLBuffer? buffer);
+    undefined bindFramebuffer(GLenum target, WebGLFramebuffer? framebuffer);
+    undefined bindRenderbuffer(GLenum target, WebGLRenderbuffer? renderbuffer);
+    undefined bindTexture(GLenum target, WebGLTexture? texture);
+    undefined blendColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
+    undefined blendEquation(GLenum mode);
+    undefined blendEquationSeparate(GLenum modeRGB, GLenum modeAlpha);
+    undefined blendFunc(GLenum sfactor, GLenum dfactor);
+    undefined blendFuncSeparate(GLenum srcRGB, GLenum dstRGB,
+                                GLenum srcAlpha, GLenum dstAlpha);
+
+    [WebGLHandlesContextLoss] GLenum checkFramebufferStatus(GLenum target);
+    undefined clear(GLbitfield mask);
+    undefined clearColor(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
+    undefined clearDepth(GLclampf depth);
+    undefined clearStencil(GLint s);
+    undefined colorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
+    undefined compileShader(WebGLShader shader);
+
+    undefined copyTexImage2D(GLenum target, GLint level, GLenum internalformat,
+                             GLint x, GLint y, GLsizei width, GLsizei height,
+                             GLint border);
+    undefined 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();
+
+    undefined cullFace(GLenum mode);
+
+    undefined deleteBuffer(WebGLBuffer? buffer);
+    undefined deleteFramebuffer(WebGLFramebuffer? framebuffer);
+    undefined deleteProgram(WebGLProgram? program);
+    undefined deleteRenderbuffer(WebGLRenderbuffer? renderbuffer);
+    undefined deleteShader(WebGLShader? shader);
+    undefined deleteTexture(WebGLTexture? texture);
+
+    undefined depthFunc(GLenum func);
+    undefined depthMask(GLboolean flag);
+    undefined depthRange(GLclampf zNear, GLclampf zFar);
+    undefined detachShader(WebGLProgram program, WebGLShader shader);
+    undefined disable(GLenum cap);
+    undefined disableVertexAttribArray(GLuint index);
+    undefined drawArrays(GLenum mode, GLint first, GLsizei count);
+    undefined drawElements(GLenum mode, GLsizei count, GLenum type, GLintptr offset);
+
+    undefined enable(GLenum cap);
+    undefined enableVertexAttribArray(GLuint index);
+    undefined finish();
+    undefined flush();
+    undefined framebufferRenderbuffer(GLenum target, GLenum attachment,
+                                      GLenum renderbuffertarget,
+                                      WebGLRenderbuffer? renderbuffer);
+    undefined framebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget,
+                                   WebGLTexture? texture, GLint level);
+    undefined frontFace(GLenum mode);
+
+    undefined 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] GLintptr getVertexAttribOffset(GLuint index, GLenum pname);
+
+    undefined 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);
+    undefined lineWidth(GLfloat width);
+    undefined linkProgram(WebGLProgram program);
+    undefined pixelStorei(GLenum pname, GLint param);
+    undefined polygonOffset(GLfloat factor, GLfloat units);
+
+    undefined renderbufferStorage(GLenum target, GLenum internalformat,
+                             GLsizei width, GLsizei height);
+    undefined sampleCoverage(GLclampf value, GLboolean invert);
+    undefined scissor(GLint x, GLint y, GLsizei width, GLsizei height);
+
+    undefined shaderSource(WebGLShader shader, DOMString source);
+
+    undefined stencilFunc(GLenum func, GLint ref, GLuint mask);
+    undefined stencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask);
+    undefined stencilMask(GLuint mask);
+    undefined stencilMaskSeparate(GLenum face, GLuint mask);
+    undefined stencilOp(GLenum fail, GLenum zfail, GLenum zpass);
+    undefined stencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
+
+    undefined texParameterf(GLenum target, GLenum pname, GLfloat param);
+    undefined texParameteri(GLenum target, GLenum pname, GLint param);
+
+    undefined uniform1f(WebGLUniformLocation? location, GLfloat x);
+    undefined uniform2f(WebGLUniformLocation? location, GLfloat x, GLfloat y);
+    undefined uniform3f(WebGLUniformLocation? location, GLfloat x, GLfloat y, GLfloat z);
+    undefined uniform4f(WebGLUniformLocation? location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+
+    undefined uniform1i(WebGLUniformLocation? location, GLint x);
+    undefined uniform2i(WebGLUniformLocation? location, GLint x, GLint y);
+    undefined uniform3i(WebGLUniformLocation? location, GLint x, GLint y, GLint z);
+    undefined uniform4i(WebGLUniformLocation? location, GLint x, GLint y, GLint z, GLint w);
+
+    undefined useProgram(WebGLProgram? program);
+    undefined validateProgram(WebGLProgram program);
+
+    undefined vertexAttrib1f(GLuint indx, GLfloat x);
+    undefined vertexAttrib1fv(GLuint indx, Float32List values);
+    undefined vertexAttrib2f(GLuint indx, GLfloat x, GLfloat y);
+    undefined vertexAttrib2fv(GLuint indx, Float32List values);
+    undefined vertexAttrib3f(GLuint indx, GLfloat x, GLfloat y, GLfloat z);
+    undefined vertexAttrib3fv(GLuint indx, Float32List values);
+    undefined vertexAttrib4f(GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+    undefined vertexAttrib4fv(GLuint indx, Float32List values);
+    undefined vertexAttribPointer(GLuint indx, GLint size, GLenum type,
+                                  GLboolean normalized, GLsizei stride, GLintptr offset);
+
+    undefined viewport(GLint x, GLint y, GLsizei width, GLsizei height);
+};
+
+[Exposed=(Window,Worker),
+ Func="mozilla::dom::OffscreenCanvas::PrefEnabledOnWorkerThread"]
+interface WebGLRenderingContext {
+    // bufferData has WebGL2 overloads.
+    undefined bufferData(GLenum target, GLsizeiptr size, GLenum usage);
+    undefined bufferData(GLenum target, [AllowShared] ArrayBuffer? data, GLenum usage);
+    undefined bufferData(GLenum target, [AllowShared] ArrayBufferView data, GLenum usage);
+    // bufferSubData has WebGL2 overloads.
+    undefined bufferSubData(GLenum target, GLintptr offset, [AllowShared] ArrayBuffer data);
+    undefined bufferSubData(GLenum target, GLintptr offset, [AllowShared] ArrayBufferView data);
+
+    // compressedTexImage2D has WebGL2 overloads.
+    undefined compressedTexImage2D(GLenum target, GLint level, GLenum internalformat,
+                                   GLsizei width, GLsizei height, GLint border,
+                                   [AllowShared] ArrayBufferView data);
+    // compressedTexSubImage2D has WebGL2 overloads.
+    undefined compressedTexSubImage2D(GLenum target, GLint level,
+                                      GLint xoffset, GLint yoffset,
+                                      GLsizei width, GLsizei height, GLenum format,
+                                      [AllowShared] ArrayBufferView data);
+
+    // readPixels has WebGL2 overloads.
+    [Throws, NeedsCallerType]
+    undefined readPixels(GLint x, GLint y, GLsizei width, GLsizei height,
+                    GLenum format, GLenum type, [AllowShared] ArrayBufferView? pixels);
+
+    // texImage2D has WebGL2 overloads.
+    // Overloads must share [Throws].
+    [Throws] // Can't actually throw.
+    undefined texImage2D(GLenum target, GLint level, GLint internalformat,
+                         GLsizei width, GLsizei height, GLint border, GLenum format,
+                         GLenum type, [AllowShared] ArrayBufferView? pixels);
+    [Throws] // Can't actually throw.
+    undefined texImage2D(GLenum target, GLint level, GLint internalformat,
+                         GLenum format, GLenum type, ImageBitmap pixels);
+    [Throws] // Can't actually throw.
+    undefined texImage2D(GLenum target, GLint level, GLint internalformat,
+                         GLenum format, GLenum type, ImageData pixels);
+    [Throws]
+    undefined texImage2D(GLenum target, GLint level, GLint internalformat,
+                         GLenum format, GLenum type, HTMLImageElement image); // May throw DOMException
+    [Throws]
+    undefined texImage2D(GLenum target, GLint level, GLint internalformat,
+                         GLenum format, GLenum type, HTMLCanvasElement canvas); // May throw DOMException
+    [Throws]
+    undefined texImage2D(GLenum target, GLint level, GLint internalformat,
+                         GLenum format, GLenum type, HTMLVideoElement video); // May throw DOMException
+    [Throws]
+    undefined texImage2D(GLenum target, GLint level, GLint internalformat,
+                         GLenum format, GLenum type, OffscreenCanvas canvas); // May throw DOMException
+    [Throws]
+    undefined texImage2D(GLenum target, GLint level, GLint internalformat,
+                         GLenum format, GLenum type, VideoFrame videoFrame); // May throw DOMException
+
+    // texSubImage2D has WebGL2 overloads.
+    [Throws] // Can't actually throw.
+    undefined texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
+                            GLsizei width, GLsizei height,
+                            GLenum format, GLenum type, [AllowShared] ArrayBufferView? pixels);
+    [Throws] // Can't actually throw.
+    undefined texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
+                            GLenum format, GLenum type, ImageBitmap pixels);
+    [Throws] // Can't actually throw.
+    undefined texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
+                            GLenum format, GLenum type, ImageData pixels);
+    [Throws]
+    undefined texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
+                            GLenum format, GLenum type, HTMLImageElement image); // May throw DOMException
+    [Throws]
+    undefined texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
+                            GLenum format, GLenum type, HTMLCanvasElement canvas); // May throw DOMException
+    [Throws]
+    undefined texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
+                            GLenum format, GLenum type, HTMLVideoElement video); // May throw DOMException
+    [Throws]
+    undefined texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
+                            GLenum format, GLenum type, OffscreenCanvas canvas); // May throw DOMException
+    [Throws]
+    undefined texSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset,
+                            GLenum format, GLenum type, VideoFrame videoFrame); // May throw DOMException
+
+    // uniform*fv have WebGL2 overloads, or rather extensions, that are not
+    // distinguishable from the WebGL1 versions when called with two arguments.
+    undefined uniform1fv(WebGLUniformLocation? location, Float32List data);
+    undefined uniform2fv(WebGLUniformLocation? location, Float32List data);
+    undefined uniform3fv(WebGLUniformLocation? location, Float32List data);
+    undefined uniform4fv(WebGLUniformLocation? location, Float32List data);
+
+    // uniform*iv have WebGL2 overloads, or rather extensions, that are not
+    // distinguishable from the WebGL1 versions when called with two arguments.
+    undefined uniform1iv(WebGLUniformLocation? location, Int32List data);
+    undefined uniform2iv(WebGLUniformLocation? location, Int32List data);
+    undefined uniform3iv(WebGLUniformLocation? location, Int32List data);
+    undefined uniform4iv(WebGLUniformLocation? location, Int32List data);
+
+    // uniformMatrix*fv have WebGL2 overloads, or rather extensions, that are
+    // not distinguishable from the WebGL1 versions when called with two
+    // arguments.
+    undefined uniformMatrix2fv(WebGLUniformLocation? location, GLboolean transpose, Float32List data);
+    undefined uniformMatrix3fv(WebGLUniformLocation? location, GLboolean transpose, Float32List data);
+    undefined uniformMatrix4fv(WebGLUniformLocation? location, GLboolean transpose, Float32List data);
+};
+
+WebGLRenderingContext includes WebGLRenderingContextBase;
+
+////////////////////////////////////////
+// specific extension interfaces
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface EXT_texture_compression_bptc {
+    const GLenum COMPRESSED_RGBA_BPTC_UNORM_EXT = 0x8E8C;
+    const GLenum COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT = 0x8E8D;
+    const GLenum COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT = 0x8E8E;
+    const GLenum COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT = 0x8E8F;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface EXT_texture_compression_rgtc {
+    const GLenum COMPRESSED_RED_RGTC1_EXT = 0x8DBB;
+    const GLenum COMPRESSED_SIGNED_RED_RGTC1_EXT = 0x8DBC;
+    const GLenum COMPRESSED_RED_GREEN_RGTC2_EXT = 0x8DBD;
+    const GLenum COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT = 0x8DBE;
+};
+
+// https://www.khronos.org/registry/webgl/extensions/EXT_texture_norm16/
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface EXT_texture_norm16 {
+  const GLenum R16_EXT = 0x822A;
+  const GLenum RG16_EXT = 0x822C;
+  const GLenum RGB16_EXT = 0x8054;
+  const GLenum RGBA16_EXT = 0x805B;
+  const GLenum R16_SNORM_EXT = 0x8F98;
+  const GLenum RG16_SNORM_EXT = 0x8F99;
+  const GLenum RGB16_SNORM_EXT = 0x8F9A;
+  const GLenum RGBA16_SNORM_EXT = 0x8F9B;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_compressed_texture_s3tc
+{
+    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;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_compressed_texture_s3tc_srgb {
+    /* Compressed Texture Formats */
+    const GLenum COMPRESSED_SRGB_S3TC_DXT1_EXT        = 0x8C4C;
+    const GLenum COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT  = 0x8C4D;
+    const GLenum COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT  = 0x8C4E;
+    const GLenum COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT  = 0x8C4F;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_compressed_texture_astc {
+    /* Compressed Texture Format */
+    const GLenum COMPRESSED_RGBA_ASTC_4x4_KHR = 0x93B0;
+    const GLenum COMPRESSED_RGBA_ASTC_5x4_KHR = 0x93B1;
+    const GLenum COMPRESSED_RGBA_ASTC_5x5_KHR = 0x93B2;
+    const GLenum COMPRESSED_RGBA_ASTC_6x5_KHR = 0x93B3;
+    const GLenum COMPRESSED_RGBA_ASTC_6x6_KHR = 0x93B4;
+    const GLenum COMPRESSED_RGBA_ASTC_8x5_KHR = 0x93B5;
+    const GLenum COMPRESSED_RGBA_ASTC_8x6_KHR = 0x93B6;
+    const GLenum COMPRESSED_RGBA_ASTC_8x8_KHR = 0x93B7;
+    const GLenum COMPRESSED_RGBA_ASTC_10x5_KHR = 0x93B8;
+    const GLenum COMPRESSED_RGBA_ASTC_10x6_KHR = 0x93B9;
+    const GLenum COMPRESSED_RGBA_ASTC_10x8_KHR = 0x93BA;
+    const GLenum COMPRESSED_RGBA_ASTC_10x10_KHR = 0x93BB;
+    const GLenum COMPRESSED_RGBA_ASTC_12x10_KHR = 0x93BC;
+    const GLenum COMPRESSED_RGBA_ASTC_12x12_KHR = 0x93BD;
+
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR = 0x93D0;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR = 0x93D1;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR = 0x93D2;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR = 0x93D3;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR = 0x93D4;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR = 0x93D5;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR = 0x93D6;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR = 0x93D7;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR = 0x93D8;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR = 0x93D9;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR = 0x93DA;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR = 0x93DB;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR = 0x93DC;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR = 0x93DD;
+
+    // Profile query support.
+    sequence<DOMString>? getSupportedProfiles();
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_compressed_texture_etc
+{
+    const GLenum COMPRESSED_R11_EAC                                 = 0x9270;
+    const GLenum COMPRESSED_SIGNED_R11_EAC                          = 0x9271;
+    const GLenum COMPRESSED_RG11_EAC                                = 0x9272;
+    const GLenum COMPRESSED_SIGNED_RG11_EAC                         = 0x9273;
+    const GLenum COMPRESSED_RGB8_ETC2                               = 0x9274;
+    const GLenum COMPRESSED_SRGB8_ETC2                              = 0x9275;
+    const GLenum COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2           = 0x9276;
+    const GLenum COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2          = 0x9277;
+    const GLenum COMPRESSED_RGBA8_ETC2_EAC                          = 0x9278;
+    const GLenum COMPRESSED_SRGB8_ALPHA8_ETC2_EAC                   = 0x9279;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_compressed_texture_etc1
+{
+    const GLenum COMPRESSED_RGB_ETC1_WEBGL = 0x8D64;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_compressed_texture_pvrtc
+{
+    const GLenum COMPRESSED_RGB_PVRTC_4BPPV1_IMG  = 0x8C00;
+    const GLenum COMPRESSED_RGB_PVRTC_2BPPV1_IMG  = 0x8C01;
+    const GLenum COMPRESSED_RGBA_PVRTC_4BPPV1_IMG = 0x8C02;
+    const GLenum COMPRESSED_RGBA_PVRTC_2BPPV1_IMG = 0x8C03;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_debug_renderer_info
+{
+    const GLenum UNMASKED_VENDOR_WEBGL        = 0x9245;
+    const GLenum UNMASKED_RENDERER_WEBGL      = 0x9246;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_debug_shaders
+{
+    DOMString getTranslatedShaderSource(WebGLShader shader);
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_depth_texture
+{
+    const GLenum UNSIGNED_INT_24_8_WEBGL = 0x84FA;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface OES_element_index_uint
+{
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface EXT_frag_depth
+{
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_lose_context {
+    undefined loseContext();
+    undefined restoreContext();
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface EXT_texture_filter_anisotropic
+{
+    const GLenum TEXTURE_MAX_ANISOTROPY_EXT     = 0x84FE;
+    const GLenum MAX_TEXTURE_MAX_ANISOTROPY_EXT = 0x84FF;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface EXT_sRGB
+{
+    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;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface OES_standard_derivatives {
+    const GLenum FRAGMENT_SHADER_DERIVATIVE_HINT_OES = 0x8B8B;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface OES_texture_float
+{
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_draw_buffers {
+    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;
+
+    undefined drawBuffersWEBGL(sequence<GLenum> buffers);
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface OES_texture_float_linear
+{
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface EXT_shader_texture_lod
+{
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface OES_texture_half_float
+{
+    const GLenum HALF_FLOAT_OES = 0x8D61;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface OES_texture_half_float_linear
+{
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_color_buffer_float
+{
+    const GLenum RGBA32F_EXT = 0x8814;
+    const GLenum RGB32F_EXT = 0x8815;
+    const GLenum FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT = 0x8211;
+    const GLenum UNSIGNED_NORMALIZED_EXT = 0x8C17;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface EXT_color_buffer_half_float
+{
+    const GLenum RGBA16F_EXT = 0x881A;
+    const GLenum RGB16F_EXT = 0x881B;
+    const GLenum FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT = 0x8211;
+    const GLenum UNSIGNED_NORMALIZED_EXT = 0x8C17;
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface OES_vertex_array_object {
+    const GLenum VERTEX_ARRAY_BINDING_OES = 0x85B5;
+
+    WebGLVertexArrayObject? createVertexArrayOES();
+    undefined deleteVertexArrayOES(WebGLVertexArrayObject? arrayObject);
+    [WebGLHandlesContextLoss] GLboolean isVertexArrayOES(WebGLVertexArrayObject? arrayObject);
+    undefined bindVertexArrayOES(WebGLVertexArrayObject? arrayObject);
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface ANGLE_instanced_arrays {
+    const GLenum VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE = 0x88FE;
+
+    undefined drawArraysInstancedANGLE(GLenum mode, GLint first, GLsizei count, GLsizei primcount);
+    undefined drawElementsInstancedANGLE(GLenum mode, GLsizei count, GLenum type, GLintptr offset, GLsizei primcount);
+    undefined vertexAttribDivisorANGLE(GLuint index, GLuint divisor);
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface EXT_blend_minmax {
+    const GLenum MIN_EXT = 0x8007;
+    const GLenum MAX_EXT = 0x8008;
+};
+
+[Exposed=(Window,Worker)]
+interface WebGLQuery {
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface EXT_disjoint_timer_query {
+    const GLenum QUERY_COUNTER_BITS_EXT = 0x8864;
+    const GLenum CURRENT_QUERY_EXT = 0x8865;
+    const GLenum QUERY_RESULT_EXT = 0x8866;
+    const GLenum QUERY_RESULT_AVAILABLE_EXT = 0x8867;
+    const GLenum TIME_ELAPSED_EXT = 0x88BF;
+    const GLenum TIMESTAMP_EXT = 0x8E28;
+    const GLenum GPU_DISJOINT_EXT = 0x8FBB;
+
+    WebGLQuery? createQueryEXT();
+    undefined deleteQueryEXT(WebGLQuery? query);
+    [WebGLHandlesContextLoss] boolean isQueryEXT(WebGLQuery? query);
+    undefined beginQueryEXT(GLenum target, WebGLQuery query);
+    undefined endQueryEXT(GLenum target);
+    undefined queryCounterEXT(WebGLQuery query, GLenum target);
+    any getQueryEXT(GLenum target, GLenum pname);
+    any getQueryObjectEXT(WebGLQuery query, GLenum pname);
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface MOZ_debug {
+    const GLenum EXTENSIONS = 0x1F03;
+
+    const GLenum WSI_INFO   = 0x10000;
+    const GLenum UNPACK_REQUIRE_FASTPATH = 0x10001;
+    const GLenum DOES_INDEX_VALIDATION   = 0x10002;
+
+    [Throws]
+    any getParameter(GLenum pname);
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface EXT_float_blend {
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface OES_fbo_render_mipmap {
+};
+
+[LegacyNoInterfaceObject,
+ Exposed=(Window,Worker)]
+interface WEBGL_explicit_present {
+    undefined present();
+};
+
+// https://www.khronos.org/registry/webgl/extensions/OES_draw_buffers_indexed/
+[Exposed=(Window,Worker), LegacyNoInterfaceObject]
+interface OES_draw_buffers_indexed {
+  undefined enableiOES(GLenum target, GLuint index);
+
+  undefined disableiOES(GLenum target, GLuint index);
+
+  undefined blendEquationiOES(GLuint buf, GLenum mode);
+
+  undefined blendEquationSeparateiOES(GLuint buf,
+                                      GLenum modeRGB, GLenum modeAlpha);
+
+  undefined blendFunciOES(GLuint buf,
+                          GLenum src, GLenum dst);
+
+  undefined blendFuncSeparateiOES(GLuint buf,
+                                  GLenum srcRGB, GLenum dstRGB,
+                                  GLenum srcAlpha, GLenum dstAlpha);
+
+  undefined colorMaskiOES(GLuint buf,
+                          GLboolean r, GLboolean g, GLboolean b, GLboolean a);
+};
+
+[Exposed=(Window,Worker), LegacyNoInterfaceObject]
+interface WEBGL_provoking_vertex {
+    const GLenum FIRST_VERTEX_CONVENTION_WEBGL = 0x8E4D;
+    const GLenum LAST_VERTEX_CONVENTION_WEBGL  = 0x8E4E; // default
+    const GLenum PROVOKING_VERTEX_WEBGL        = 0x8E4F;
+
+    undefined provokingVertexWEBGL(GLenum provokeMode);
+};
+
+// https://immersive-web.github.io/webxr/#dom-webglcontextattributes-xrcompatible
+partial dictionary WebGLContextAttributes {
+    [Pref="dom.vr.webxr.enabled"]
+    boolean xrCompatible = false;
+};
+
+// https://immersive-web.github.io/webxr/#dom-webglrenderingcontextbase-makexrcompatible
+partial interface mixin WebGLRenderingContextBase {
+    [NewObject, Pref="dom.vr.webxr.enabled"]
+    Promise<undefined> makeXRCompatible();
+};