--- title: "WebGLRenderingContextBase | JavaScript maps SDK" description: "Documentation for MapTiler SDK" --- # Interface WebGLRenderingContextBase interface WebGLRenderingContextBase {     [ACTIVE\_ATTRIBUTES](#active_attributes): 35721;     [ACTIVE\_TEXTURE](#active_texture): 34016;     [ACTIVE\_UNIFORMS](#active_uniforms): 35718;     [ALIASED\_LINE\_WIDTH\_RANGE](#aliased_line_width_range): 33902;     [ALIASED\_POINT\_SIZE\_RANGE](#aliased_point_size_range): 33901;     [ALPHA](#alpha): 6406;     [ALPHA\_BITS](#alpha_bits): 3413;     [ALWAYS](#always): 519;     [ARRAY\_BUFFER](#array_buffer): 34962;     [ARRAY\_BUFFER\_BINDING](#array_buffer_binding): 34964;     [ATTACHED\_SHADERS](#attached_shaders): 35717;     [BACK](#back): 1029;     [BLEND](#blend): 3042;     [BLEND\_COLOR](#blend_color): 32773;     [BLEND\_DST\_ALPHA](#blend_dst_alpha): 32970;     [BLEND\_DST\_RGB](#blend_dst_rgb): 32968;     [BLEND\_EQUATION](#blend_equation): 32777;     [BLEND\_EQUATION\_ALPHA](#blend_equation_alpha): 34877;     [BLEND\_EQUATION\_RGB](#blend_equation_rgb): 32777;     [BLEND\_SRC\_ALPHA](#blend_src_alpha): 32971;     [BLEND\_SRC\_RGB](#blend_src_rgb): 32969;     [BLUE\_BITS](#blue_bits): 3412;     [BOOL](#bool): 35670;     [BOOL\_VEC2](#bool_vec2): 35671;     [BOOL\_VEC3](#bool_vec3): 35672;     [BOOL\_VEC4](#bool_vec4): 35673;     [BROWSER\_DEFAULT\_WEBGL](#browser_default_webgl): 37444;     [BUFFER\_SIZE](#buffer_size): 34660;     [BUFFER\_USAGE](#buffer_usage): 34661;     [BYTE](#byte): 5120;     [canvas](#canvas): [OffscreenCanvas](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OffscreenCanvas/) | [HTMLCanvasElement](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.HTMLCanvasElement/);     [CCW](#ccw): 2305;     [CLAMP\_TO\_EDGE](#clamp_to_edge): 33071;     [COLOR\_ATTACHMENT0](#color_attachment0): 36064;     [COLOR\_BUFFER\_BIT](#color_buffer_bit): 16384;     [COLOR\_CLEAR\_VALUE](#color_clear_value): 3106;     [COLOR\_WRITEMASK](#color_writemask): 3107;     [COMPILE\_STATUS](#compile_status): 35713;     [COMPRESSED\_TEXTURE\_FORMATS](#compressed_texture_formats): 34467;     [CONSTANT\_ALPHA](#constant_alpha): 32771;     [CONSTANT\_COLOR](#constant_color): 32769;     [CONTEXT\_LOST\_WEBGL](#context_lost_webgl): 37442;     [CULL\_FACE](#cull_face): 2884;     [CULL\_FACE\_MODE](#cull_face_mode): 2885;     [CURRENT\_PROGRAM](#current_program): 35725;     [CURRENT\_VERTEX\_ATTRIB](#current_vertex_attrib): 34342;     [CW](#cw): 2304;     [DECR](#decr): 7683;     [DECR\_WRAP](#decr_wrap): 34056;     [DELETE\_STATUS](#delete_status): 35712;     [DEPTH\_ATTACHMENT](#depth_attachment): 36096;     [DEPTH\_BITS](#depth_bits): 3414;     [DEPTH\_BUFFER\_BIT](#depth_buffer_bit): 256;     [DEPTH\_CLEAR\_VALUE](#depth_clear_value): 2931;     [DEPTH\_COMPONENT](#depth_component): 6402;     [DEPTH\_COMPONENT16](#depth_component16): 33189;     [DEPTH\_FUNC](#depth_func): 2932;     [DEPTH\_RANGE](#depth_range): 2928;     [DEPTH\_STENCIL](#depth_stencil): 34041;     [DEPTH\_STENCIL\_ATTACHMENT](#depth_stencil_attachment): 33306;     [DEPTH\_TEST](#depth_test): 2929;     [DEPTH\_WRITEMASK](#depth_writemask): 2930;     [DITHER](#dither): 3024;     [DONT\_CARE](#dont_care): 4352;     [drawingBufferColorSpace](#drawingbuffercolorspace): [PredefinedColorSpace](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.PredefinedColorSpace/);     [drawingBufferHeight](#drawingbufferheight): number;     [drawingBufferWidth](#drawingbufferwidth): number;     [DST\_ALPHA](#dst_alpha): 772;     [DST\_COLOR](#dst_color): 774;     [DYNAMIC\_DRAW](#dynamic_draw): 35048;     [ELEMENT\_ARRAY\_BUFFER](#element_array_buffer): 34963;     [ELEMENT\_ARRAY\_BUFFER\_BINDING](#element_array_buffer_binding): 34965;     [EQUAL](#equal): 514;     [FASTEST](#fastest): 4353;     [FLOAT](#float): 5126;     [FLOAT\_MAT2](#float_mat2): 35674;     [FLOAT\_MAT3](#float_mat3): 35675;     [FLOAT\_MAT4](#float_mat4): 35676;     [FLOAT\_VEC2](#float_vec2): 35664;     [FLOAT\_VEC3](#float_vec3): 35665;     [FLOAT\_VEC4](#float_vec4): 35666;     [FRAGMENT\_SHADER](#fragment_shader): 35632;     [FRAMEBUFFER](#framebuffer): 36160;     [FRAMEBUFFER\_ATTACHMENT\_OBJECT\_NAME](#framebuffer_attachment_object_name): 36049;     [FRAMEBUFFER\_ATTACHMENT\_OBJECT\_TYPE](#framebuffer_attachment_object_type): 36048;     [FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_CUBE\_MAP\_FACE](#framebuffer_attachment_texture_cube_map_face): 36051;     [FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_LEVEL](#framebuffer_attachment_texture_level): 36050;     [FRAMEBUFFER\_BINDING](#framebuffer_binding): 36006;     [FRAMEBUFFER\_COMPLETE](#framebuffer_complete): 36053;     [FRAMEBUFFER\_INCOMPLETE\_ATTACHMENT](#framebuffer_incomplete_attachment): 36054;     [FRAMEBUFFER\_INCOMPLETE\_DIMENSIONS](#framebuffer_incomplete_dimensions): 36057;     [FRAMEBUFFER\_INCOMPLETE\_MISSING\_ATTACHMENT](#framebuffer_incomplete_missing_attachment): 36055;     [FRAMEBUFFER\_UNSUPPORTED](#framebuffer_unsupported): 36061;     [FRONT](#front): 1028;     [FRONT\_AND\_BACK](#front_and_back): 1032;     [FRONT\_FACE](#front_face): 2886;     [FUNC\_ADD](#func_add): 32774;     [FUNC\_REVERSE\_SUBTRACT](#func_reverse_subtract): 32779;     [FUNC\_SUBTRACT](#func_subtract): 32778;     [GENERATE\_MIPMAP\_HINT](#generate_mipmap_hint): 33170;     [GEQUAL](#gequal): 518;     [GREATER](#greater): 516;     [GREEN\_BITS](#green_bits): 3411;     [HIGH\_FLOAT](#high_float): 36338;     [HIGH\_INT](#high_int): 36341;     [IMPLEMENTATION\_COLOR\_READ\_FORMAT](#implementation_color_read_format): 35739;     [IMPLEMENTATION\_COLOR\_READ\_TYPE](#implementation_color_read_type): 35738;     [INCR](#incr): 7682;     [INCR\_WRAP](#incr_wrap): 34055;     [INT](#int): 5124;     [INT\_VEC2](#int_vec2): 35667;     [INT\_VEC3](#int_vec3): 35668;     [INT\_VEC4](#int_vec4): 35669;     [INVALID\_ENUM](#invalid_enum): 1280;     [INVALID\_FRAMEBUFFER\_OPERATION](#invalid_framebuffer_operation): 1286;     [INVALID\_OPERATION](#invalid_operation): 1282;     [INVALID\_VALUE](#invalid_value): 1281;     [INVERT](#invert): 5386;     [KEEP](#keep): 7680;     [LEQUAL](#lequal): 515;     [LESS](#less): 513;     [LINE\_LOOP](#line_loop): 2;     [LINE\_STRIP](#line_strip): 3;     [LINE\_WIDTH](#line_width): 2849;     [LINEAR](#linear): 9729;     [LINEAR\_MIPMAP\_LINEAR](#linear_mipmap_linear): 9987;     [LINEAR\_MIPMAP\_NEAREST](#linear_mipmap_nearest): 9985;     [LINES](#lines): 1;     [LINK\_STATUS](#link_status): 35714;     [LOW\_FLOAT](#low_float): 36336;     [LOW\_INT](#low_int): 36339;     [LUMINANCE](#luminance): 6409;     [LUMINANCE\_ALPHA](#luminance_alpha): 6410;     [MAX\_COMBINED\_TEXTURE\_IMAGE\_UNITS](#max_combined_texture_image_units): 35661;     [MAX\_CUBE\_MAP\_TEXTURE\_SIZE](#max_cube_map_texture_size): 34076;     [MAX\_FRAGMENT\_UNIFORM\_VECTORS](#max_fragment_uniform_vectors): 36349;     [MAX\_RENDERBUFFER\_SIZE](#max_renderbuffer_size): 34024;     [MAX\_TEXTURE\_IMAGE\_UNITS](#max_texture_image_units): 34930;     [MAX\_TEXTURE\_SIZE](#max_texture_size): 3379;     [MAX\_VARYING\_VECTORS](#max_varying_vectors): 36348;     [MAX\_VERTEX\_ATTRIBS](#max_vertex_attribs): 34921;     [MAX\_VERTEX\_TEXTURE\_IMAGE\_UNITS](#max_vertex_texture_image_units): 35660;     [MAX\_VERTEX\_UNIFORM\_VECTORS](#max_vertex_uniform_vectors): 36347;     [MAX\_VIEWPORT\_DIMS](#max_viewport_dims): 3386;     [MEDIUM\_FLOAT](#medium_float): 36337;     [MEDIUM\_INT](#medium_int): 36340;     [MIRRORED\_REPEAT](#mirrored_repeat): 33648;     [NEAREST](#nearest): 9728;     [NEAREST\_MIPMAP\_LINEAR](#nearest_mipmap_linear): 9986;     [NEAREST\_MIPMAP\_NEAREST](#nearest_mipmap_nearest): 9984;     [NEVER](#never): 512;     [NICEST](#nicest): 4354;     [NO\_ERROR](#no_error): 0;     [NONE](#none): 0;     [NOTEQUAL](#notequal): 517;     [ONE](#one): 1;     [ONE\_MINUS\_CONSTANT\_ALPHA](#one_minus_constant_alpha): 32772;     [ONE\_MINUS\_CONSTANT\_COLOR](#one_minus_constant_color): 32770;     [ONE\_MINUS\_DST\_ALPHA](#one_minus_dst_alpha): 773;     [ONE\_MINUS\_DST\_COLOR](#one_minus_dst_color): 775;     [ONE\_MINUS\_SRC\_ALPHA](#one_minus_src_alpha): 771;     [ONE\_MINUS\_SRC\_COLOR](#one_minus_src_color): 769;     [OUT\_OF\_MEMORY](#out_of_memory): 1285;     [PACK\_ALIGNMENT](#pack_alignment): 3333;     [POINTS](#points): 0;     [POLYGON\_OFFSET\_FACTOR](#polygon_offset_factor): 32824;     [POLYGON\_OFFSET\_FILL](#polygon_offset_fill): 32823;     [POLYGON\_OFFSET\_UNITS](#polygon_offset_units): 10752;     [RED\_BITS](#red_bits): 3410;     [RENDERBUFFER](#renderbuffer): 36161;     [RENDERBUFFER\_ALPHA\_SIZE](#renderbuffer_alpha_size): 36179;     [RENDERBUFFER\_BINDING](#renderbuffer_binding): 36007;     [RENDERBUFFER\_BLUE\_SIZE](#renderbuffer_blue_size): 36178;     [RENDERBUFFER\_DEPTH\_SIZE](#renderbuffer_depth_size): 36180;     [RENDERBUFFER\_GREEN\_SIZE](#renderbuffer_green_size): 36177;     [RENDERBUFFER\_HEIGHT](#renderbuffer_height): 36163;     [RENDERBUFFER\_INTERNAL\_FORMAT](#renderbuffer_internal_format): 36164;     [RENDERBUFFER\_RED\_SIZE](#renderbuffer_red_size): 36176;     [RENDERBUFFER\_STENCIL\_SIZE](#renderbuffer_stencil_size): 36181;     [RENDERBUFFER\_WIDTH](#renderbuffer_width): 36162;     [RENDERER](#renderer): 7937;     [REPEAT](#repeat): 10497;     [REPLACE](#replace): 7681;     [RGB](#rgb): 6407;     [RGB5\_A1](#rgb5_a1): 32855;     [RGB565](#rgb565): 36194;     [RGBA](#rgba): 6408;     [RGBA4](#rgba4): 32854;     [RGBA8](#rgba8): 32856;     [SAMPLE\_ALPHA\_TO\_COVERAGE](#sample_alpha_to_coverage): 32926;     [SAMPLE\_BUFFERS](#sample_buffers): 32936;     [SAMPLE\_COVERAGE](#sample_coverage): 32928;     [SAMPLE\_COVERAGE\_INVERT](#sample_coverage_invert): 32939;     [SAMPLE\_COVERAGE\_VALUE](#sample_coverage_value): 32938;     [SAMPLER\_2D](#sampler_2d): 35678;     [SAMPLER\_CUBE](#sampler_cube): 35680;     [SAMPLES](#samples): 32937;     [SCISSOR\_BOX](#scissor_box): 3088;     [SCISSOR\_TEST](#scissor_test): 3089;     [SHADER\_TYPE](#shader_type): 35663;     [SHADING\_LANGUAGE\_VERSION](#shading_language_version): 35724;     [SHORT](#short): 5122;     [SRC\_ALPHA](#src_alpha): 770;     [SRC\_ALPHA\_SATURATE](#src_alpha_saturate): 776;     [SRC\_COLOR](#src_color): 768;     [STATIC\_DRAW](#static_draw): 35044;     [STENCIL\_ATTACHMENT](#stencil_attachment): 36128;     [STENCIL\_BACK\_FAIL](#stencil_back_fail): 34817;     [STENCIL\_BACK\_FUNC](#stencil_back_func): 34816;     [STENCIL\_BACK\_PASS\_DEPTH\_FAIL](#stencil_back_pass_depth_fail): 34818;     [STENCIL\_BACK\_PASS\_DEPTH\_PASS](#stencil_back_pass_depth_pass): 34819;     [STENCIL\_BACK\_REF](#stencil_back_ref): 36003;     [STENCIL\_BACK\_VALUE\_MASK](#stencil_back_value_mask): 36004;     [STENCIL\_BACK\_WRITEMASK](#stencil_back_writemask): 36005;     [STENCIL\_BITS](#stencil_bits): 3415;     [STENCIL\_BUFFER\_BIT](#stencil_buffer_bit): 1024;     [STENCIL\_CLEAR\_VALUE](#stencil_clear_value): 2961;     [STENCIL\_FAIL](#stencil_fail): 2964;     [STENCIL\_FUNC](#stencil_func): 2962;     [STENCIL\_INDEX8](#stencil_index8): 36168;     [STENCIL\_PASS\_DEPTH\_FAIL](#stencil_pass_depth_fail): 2965;     [STENCIL\_PASS\_DEPTH\_PASS](#stencil_pass_depth_pass): 2966;     [STENCIL\_REF](#stencil_ref): 2967;     [STENCIL\_TEST](#stencil_test): 2960;     [STENCIL\_VALUE\_MASK](#stencil_value_mask): 2963;     [STENCIL\_WRITEMASK](#stencil_writemask): 2968;     [STREAM\_DRAW](#stream_draw): 35040;     [SUBPIXEL\_BITS](#subpixel_bits): 3408;     [TEXTURE](#texture): 5890;     [TEXTURE\_2D](#texture_2d): 3553;     [TEXTURE\_BINDING\_2D](#texture_binding_2d): 32873;     [TEXTURE\_BINDING\_CUBE\_MAP](#texture_binding_cube_map): 34068;     [TEXTURE\_CUBE\_MAP](#texture_cube_map): 34067;     [TEXTURE\_CUBE\_MAP\_NEGATIVE\_X](#texture_cube_map_negative_x): 34070;     [TEXTURE\_CUBE\_MAP\_NEGATIVE\_Y](#texture_cube_map_negative_y): 34072;     [TEXTURE\_CUBE\_MAP\_NEGATIVE\_Z](#texture_cube_map_negative_z): 34074;     [TEXTURE\_CUBE\_MAP\_POSITIVE\_X](#texture_cube_map_positive_x): 34069;     [TEXTURE\_CUBE\_MAP\_POSITIVE\_Y](#texture_cube_map_positive_y): 34071;     [TEXTURE\_CUBE\_MAP\_POSITIVE\_Z](#texture_cube_map_positive_z): 34073;     [TEXTURE\_MAG\_FILTER](#texture_mag_filter): 10240;     [TEXTURE\_MIN\_FILTER](#texture_min_filter): 10241;     [TEXTURE\_WRAP\_S](#texture_wrap_s): 10242;     [TEXTURE\_WRAP\_T](#texture_wrap_t): 10243;     [TEXTURE0](#texture0): 33984;     [TEXTURE1](#texture1): 33985;     [TEXTURE10](#texture10): 33994;     [TEXTURE11](#texture11): 33995;     [TEXTURE12](#texture12): 33996;     [TEXTURE13](#texture13): 33997;     [TEXTURE14](#texture14): 33998;     [TEXTURE15](#texture15): 33999;     [TEXTURE16](#texture16): 34000;     [TEXTURE17](#texture17): 34001;     [TEXTURE18](#texture18): 34002;     [TEXTURE19](#texture19): 34003;     [TEXTURE2](#texture2): 33986;     [TEXTURE20](#texture20): 34004;     [TEXTURE21](#texture21): 34005;     [TEXTURE22](#texture22): 34006;     [TEXTURE23](#texture23): 34007;     [TEXTURE24](#texture24): 34008;     [TEXTURE25](#texture25): 34009;     [TEXTURE26](#texture26): 34010;     [TEXTURE27](#texture27): 34011;     [TEXTURE28](#texture28): 34012;     [TEXTURE29](#texture29): 34013;     [TEXTURE3](#texture3): 33987;     [TEXTURE30](#texture30): 34014;     [TEXTURE31](#texture31): 34015;     [TEXTURE4](#texture4): 33988;     [TEXTURE5](#texture5): 33989;     [TEXTURE6](#texture6): 33990;     [TEXTURE7](#texture7): 33991;     [TEXTURE8](#texture8): 33992;     [TEXTURE9](#texture9): 33993;     [TRIANGLE\_FAN](#triangle_fan): 6;     [TRIANGLE\_STRIP](#triangle_strip): 5;     [TRIANGLES](#triangles): 4;     [UNPACK\_ALIGNMENT](#unpack_alignment): 3317;     [UNPACK\_COLORSPACE\_CONVERSION\_WEBGL](#unpack_colorspace_conversion_webgl): 37443;     [UNPACK\_FLIP\_Y\_WEBGL](#unpack_flip_y_webgl): 37440;     [UNPACK\_PREMULTIPLY\_ALPHA\_WEBGL](#unpack_premultiply_alpha_webgl): 37441;     [unpackColorSpace](#unpackcolorspace): [PredefinedColorSpace](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.PredefinedColorSpace/);     [UNSIGNED\_BYTE](#unsigned_byte): 5121;     [UNSIGNED\_INT](#unsigned_int): 5125;     [UNSIGNED\_SHORT](#unsigned_short): 5123;     [UNSIGNED\_SHORT\_4\_4\_4\_4](#unsigned_short_4_4_4_4): 32819;     [UNSIGNED\_SHORT\_5\_5\_5\_1](#unsigned_short_5_5_5_1): 32820;     [UNSIGNED\_SHORT\_5\_6\_5](#unsigned_short_5_6_5): 33635;     [VALIDATE\_STATUS](#validate_status): 35715;     [VENDOR](#vendor): 7936;     [VERSION](#version): 7938;     [VERTEX\_ATTRIB\_ARRAY\_BUFFER\_BINDING](#vertex_attrib_array_buffer_binding): 34975;     [VERTEX\_ATTRIB\_ARRAY\_ENABLED](#vertex_attrib_array_enabled): 34338;     [VERTEX\_ATTRIB\_ARRAY\_NORMALIZED](#vertex_attrib_array_normalized): 34922;     [VERTEX\_ATTRIB\_ARRAY\_POINTER](#vertex_attrib_array_pointer): 34373;     [VERTEX\_ATTRIB\_ARRAY\_SIZE](#vertex_attrib_array_size): 34339;     [VERTEX\_ATTRIB\_ARRAY\_STRIDE](#vertex_attrib_array_stride): 34340;     [VERTEX\_ATTRIB\_ARRAY\_TYPE](#vertex_attrib_array_type): 34341;     [VERTEX\_SHADER](#vertex_shader): 35633;     [VIEWPORT](#viewport): 2978;     [ZERO](#zero): 0;     [activeTexture](#activetexture-1)(texture: number): void;     [attachShader](#attachshader-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)): void;     [bindAttribLocation](#bindattriblocation-1)(         program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/),         index: number,         name: string,     ): void;     [bindBuffer](#bindbuffer-1)(target: number, buffer: [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/) | null): void;     [bindFramebuffer](#bindframebuffer-1)(target: number, framebuffer: [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/) | null): void;     [bindRenderbuffer](#bindrenderbuffer-1)(         target: number,         renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null,     ): void;     [bindTexture](#bindtexture-1)(target: number, texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null): void;     [blendColor](#blendcolor-1)(red: number, green: number, blue: number, alpha: number): void;     [blendEquation](#blendequation-1)(mode: number): void;     [blendEquationSeparate](#blendequationseparate-1)(modeRGB: number, modeAlpha: number): void;     [blendFunc](#blendfunc-1)(sfactor: number, dfactor: number): void;     [blendFuncSeparate](#blendfuncseparate-1)(         srcRGB: number,         dstRGB: number,         srcAlpha: number,         dstAlpha: number,     ): void;     [checkFramebufferStatus](#checkframebufferstatus-1)(target: number): number;     [clear](#clear-1)(mask: number): void;     [clearColor](#clearcolor-1)(red: number, green: number, blue: number, alpha: number): void;     [clearDepth](#cleardepth-1)(depth: number): void;     [clearStencil](#clearstencil-1)(s: number): void;     [colorMask](#colormask-1)(         red: boolean,         green: boolean,         blue: boolean,         alpha: boolean,     ): void;     [compileShader](#compileshader-1)(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)): void;     [copyTexImage2D](#copyteximage2d-1)(         target: number,         level: number,         internalformat: number,         x: number,         y: number,         width: number,         height: number,         border: number,     ): void;     [copyTexSubImage2D](#copytexsubimage2d-1)(         target: number,         level: number,         xoffset: number,         yoffset: number,         x: number,         y: number,         width: number,         height: number,     ): void;     [createBuffer](#createbuffer-1)(): [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/);     [createFramebuffer](#createframebuffer-1)(): [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/);     [createProgram](#createprogram-1)(): [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/);     [createRenderbuffer](#createrenderbuffer-1)(): [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/);     [createShader](#createshader-1)(type: number): [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) | null;     [createTexture](#createtexture-1)(): [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/);     [cullFace](#cullface-1)(mode: number): void;     [deleteBuffer](#deletebuffer-1)(buffer: [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/) | null): void;     [deleteFramebuffer](#deleteframebuffer-1)(framebuffer: [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/) | null): void;     [deleteProgram](#deleteprogram-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) | null): void;     [deleteRenderbuffer](#deleterenderbuffer-1)(renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null): void;     [deleteShader](#deleteshader-1)(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) | null): void;     [deleteTexture](#deletetexture-1)(texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null): void;     [depthFunc](#depthfunc-1)(func: number): void;     [depthMask](#depthmask-1)(flag: boolean): void;     [depthRange](#depthrange-1)(zNear: number, zFar: number): void;     [detachShader](#detachshader-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)): void;     [disable](#disable-1)(cap: number): void;     [disableVertexAttribArray](#disablevertexattribarray-1)(index: number): void;     [drawArrays](#drawarrays-1)(mode: number, first: number, count: number): void;     [drawElements](#drawelements-1)(         mode: number,         count: number,         type: number,         offset: number,     ): void;     [enable](#enable-1)(cap: number): void;     [enableVertexAttribArray](#enablevertexattribarray-1)(index: number): void;     [finish](#finish-1)(): void;     [flush](#flush-1)(): void;     [framebufferRenderbuffer](#framebufferrenderbuffer-1)(         target: number,         attachment: number,         renderbuffertarget: number,         renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null,     ): void;     [framebufferTexture2D](#framebuffertexture2d-1)(         target: number,         attachment: number,         textarget: number,         texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null,         level: number,     ): void;     [frontFace](#frontface-1)(mode: number): void;     [generateMipmap](#generatemipmap-1)(target: number): void;     [getActiveAttrib](#getactiveattrib-1)(         program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/),         index: number,     ): [WebGLActiveInfo](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLActiveInfo/) | null;     [getActiveUniform](#getactiveuniform-1)(         program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/),         index: number,     ): [WebGLActiveInfo](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLActiveInfo/) | null;     [getAttachedShaders](#getattachedshaders-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/)): [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)\[\] | null;     [getAttribLocation](#getattriblocation-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), name: string): number;     [getBufferParameter](#getbufferparameter-1)(target: number, pname: number): any;     [getContextAttributes](#getcontextattributes-1)(): [WebGLContextAttributes](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLContextAttributes/) | null;     [getError](#geterror-1)(): number;     [getExtension](#getextension-1)(name: string): any;     [getExtension](#getextension-2)(         extensionName: "ANGLE\_instanced\_arrays",     ): [ANGLE\_instanced\_arrays](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.ANGLE_instanced_arrays/) | null;     [getExtension](#getextension-3)(extensionName: "EXT\_blend\_minmax"): [EXT\_blend\_minmax](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_blend_minmax/) | null;     [getExtension](#getextension-4)(         extensionName: "EXT\_color\_buffer\_float",     ): [EXT\_color\_buffer\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_color_buffer_float/) | null;     [getExtension](#getextension-5)(         extensionName: "EXT\_color\_buffer\_half\_float",     ): [EXT\_color\_buffer\_half\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_color_buffer_half_float/) | null;     [getExtension](#getextension-6)(extensionName: "EXT\_float\_blend"): [EXT\_float\_blend](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_float_blend/) | null;     [getExtension](#getextension-7)(extensionName: "EXT\_frag\_depth"): [EXT\_frag\_depth](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_frag_depth/) | null;     [getExtension](#getextension-8)(extensionName: "EXT\_sRGB"): [EXT\_sRGB](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_sRGB/) | null;     [getExtension](#getextension-9)(         extensionName: "EXT\_shader\_texture\_lod",     ): [EXT\_shader\_texture\_lod](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_shader_texture_lod/) | null;     [getExtension](#getextension-10)(         extensionName: "EXT\_texture\_compression\_bptc",     ): [EXT\_texture\_compression\_bptc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_texture_compression_bptc/) | null;     [getExtension](#getextension-11)(         extensionName: "EXT\_texture\_compression\_rgtc",     ): [EXT\_texture\_compression\_rgtc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_texture_compression_rgtc/) | null;     [getExtension](#getextension-12)(         extensionName: "EXT\_texture\_filter\_anisotropic",     ): [EXT\_texture\_filter\_anisotropic](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_texture_filter_anisotropic/) | null;     [getExtension](#getextension-13)(         extensionName: "KHR\_parallel\_shader\_compile",     ): [KHR\_parallel\_shader\_compile](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.KHR_parallel_shader_compile/) | null;     [getExtension](#getextension-14)(         extensionName: "OES\_element\_index\_uint",     ): [OES\_element\_index\_uint](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_element_index_uint/) | null;     [getExtension](#getextension-15)(         extensionName: "OES\_fbo\_render\_mipmap",     ): [OES\_fbo\_render\_mipmap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_fbo_render_mipmap/) | null;     [getExtension](#getextension-16)(         extensionName: "OES\_standard\_derivatives",     ): [OES\_standard\_derivatives](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_standard_derivatives/) | null;     [getExtension](#getextension-17)(extensionName: "OES\_texture\_float"): [OES\_texture\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_float/) | null;     [getExtension](#getextension-18)(         extensionName: "OES\_texture\_float\_linear",     ): [OES\_texture\_float\_linear](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_float_linear/) | null;     [getExtension](#getextension-19)(         extensionName: "OES\_texture\_half\_float",     ): [OES\_texture\_half\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_half_float/) | null;     [getExtension](#getextension-20)(         extensionName: "OES\_texture\_half\_float\_linear",     ): [OES\_texture\_half\_float\_linear](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_half_float_linear/) | null;     [getExtension](#getextension-21)(         extensionName: "OES\_vertex\_array\_object",     ): [OES\_vertex\_array\_object](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_vertex_array_object/) | null;     [getExtension](#getextension-22)(extensionName: "OVR\_multiview2"): [OVR\_multiview2](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OVR_multiview2/) | null;     [getExtension](#getextension-23)(         extensionName: "WEBGL\_color\_buffer\_float",     ): [WEBGL\_color\_buffer\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_color_buffer_float/) | null;     [getExtension](#getextension-24)(         extensionName: "WEBGL\_compressed\_texture\_astc",     ): [WEBGL\_compressed\_texture\_astc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_astc/) | null;     [getExtension](#getextension-25)(         extensionName: "WEBGL\_compressed\_texture\_etc",     ): [WEBGL\_compressed\_texture\_etc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_etc/) | null;     [getExtension](#getextension-26)(         extensionName: "WEBGL\_compressed\_texture\_etc1",     ): [WEBGL\_compressed\_texture\_etc1](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_etc1/) | null;     [getExtension](#getextension-27)(         extensionName: "WEBGL\_compressed\_texture\_pvrtc",     ): [WEBGL\_compressed\_texture\_pvrtc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_pvrtc/) | null;     [getExtension](#getextension-28)(         extensionName: "WEBGL\_compressed\_texture\_s3tc",     ): [WEBGL\_compressed\_texture\_s3tc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_s3tc/) | null;     [getExtension](#getextension-29)(         extensionName: "WEBGL\_compressed\_texture\_s3tc\_srgb",     ): [WEBGL\_compressed\_texture\_s3tc\_srgb](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_s3tc_srgb/) | null;     [getExtension](#getextension-30)(         extensionName: "WEBGL\_debug\_renderer\_info",     ): [WEBGL\_debug\_renderer\_info](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_debug_renderer_info/) | null;     [getExtension](#getextension-31)(         extensionName: "WEBGL\_debug\_shaders",     ): [WEBGL\_debug\_shaders](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_debug_shaders/) | null;     [getExtension](#getextension-32)(         extensionName: "WEBGL\_depth\_texture",     ): [WEBGL\_depth\_texture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_depth_texture/) | null;     [getExtension](#getextension-33)(         extensionName: "WEBGL\_draw\_buffers",     ): [WEBGL\_draw\_buffers](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_draw_buffers/) | null;     [getExtension](#getextension-34)(         extensionName: "WEBGL\_lose\_context",     ): [WEBGL\_lose\_context](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_lose_context/) | null;     [getExtension](#getextension-35)(extensionName: "WEBGL\_multi\_draw"): [WEBGL\_multi\_draw](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_multi_draw/) | null;     [getFramebufferAttachmentParameter](#getframebufferattachmentparameter-1)(         target: number,         attachment: number,         pname: number,     ): any;     [getParameter](#getparameter-1)(pname: number): any;     [getProgramInfoLog](#getprograminfolog-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/)): string | null;     [getProgramParameter](#getprogramparameter-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), pname: number): any;     [getRenderbufferParameter](#getrenderbufferparameter-1)(target: number, pname: number): any;     [getShaderInfoLog](#getshaderinfolog-1)(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)): string | null;     [getShaderParameter](#getshaderparameter-1)(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/), pname: number): any;     [getShaderPrecisionFormat](#getshaderprecisionformat-1)(         shadertype: number,         precisiontype: number,     ): [WebGLShaderPrecisionFormat](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShaderPrecisionFormat/) | null;     [getShaderSource](#getshadersource-1)(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)): string | null;     [getSupportedExtensions](#getsupportedextensions-1)(): string\[\] | null;     [getTexParameter](#gettexparameter-1)(target: number, pname: number): any;     [getUniform](#getuniform-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/)): any;     [getUniformLocation](#getuniformlocation-1)(         program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/),         name: string,     ): [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null;     [getVertexAttrib](#getvertexattrib-1)(index: number, pname: number): any;     [getVertexAttribOffset](#getvertexattriboffset-1)(index: number, pname: number): number;     [hint](#hint-1)(target: number, mode: number): void;     [isBuffer](#isbuffer-1)(buffer: [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/) | null): boolean;     [isContextLost](#iscontextlost-1)(): boolean;     [isEnabled](#isenabled-1)(cap: number): boolean;     [isFramebuffer](#isframebuffer-1)(framebuffer: [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/) | null): boolean;     [isProgram](#isprogram-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) | null): boolean;     [isRenderbuffer](#isrenderbuffer-1)(renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null): boolean;     [isShader](#isshader-1)(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) | null): boolean;     [isTexture](#istexture-1)(texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null): boolean;     [lineWidth](#linewidth-1)(width: number): void;     [linkProgram](#linkprogram-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/)): void;     [pixelStorei](#pixelstorei-1)(pname: number, param: number | boolean): void;     [polygonOffset](#polygonoffset-1)(factor: number, units: number): void;     [renderbufferStorage](#renderbufferstorage-1)(         target: number,         internalformat: number,         width: number,         height: number,     ): void;     [sampleCoverage](#samplecoverage-1)(value: number, invert: boolean): void;     [scissor](#scissor-1)(x: number, y: number, width: number, height: number): void;     [shaderSource](#shadersource-1)(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/), source: string): void;     [stencilFunc](#stencilfunc-1)(func: number, ref: number, mask: number): void;     [stencilFuncSeparate](#stencilfuncseparate-1)(         face: number,         func: number,         ref: number,         mask: number,     ): void;     [stencilMask](#stencilmask-1)(mask: number): void;     [stencilMaskSeparate](#stencilmaskseparate-1)(face: number, mask: number): void;     [stencilOp](#stencilop-1)(fail: number, zfail: number, zpass: number): void;     [stencilOpSeparate](#stencilopseparate-1)(         face: number,         fail: number,         zfail: number,         zpass: number,     ): void;     [texParameterf](#texparameterf-1)(target: number, pname: number, param: number): void;     [texParameteri](#texparameteri-1)(target: number, pname: number, param: number): void;     [uniform1f](#uniform1f-1)(location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null, x: number): void;     [uniform1i](#uniform1i-1)(location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null, x: number): void;     [uniform2f](#uniform2f-1)(         location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null,         x: number,         y: number,     ): void;     [uniform2i](#uniform2i-1)(         location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null,         x: number,         y: number,     ): void;     [uniform3f](#uniform3f-1)(         location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null,         x: number,         y: number,         z: number,     ): void;     [uniform3i](#uniform3i-1)(         location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null,         x: number,         y: number,         z: number,     ): void;     [uniform4f](#uniform4f-1)(         location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null,         x: number,         y: number,         z: number,         w: number,     ): void;     [uniform4i](#uniform4i-1)(         location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null,         x: number,         y: number,         z: number,         w: number,     ): void;     [useProgram](#useprogram-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) | null): void;     [validateProgram](#validateprogram-1)(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/)): void;     [vertexAttrib1f](#vertexattrib1f-1)(index: number, x: number): void;     [vertexAttrib1fv](#vertexattrib1fv-1)(index: number, values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/)): void;     [vertexAttrib1fv](#vertexattrib1fv-2)(index: number, values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/)): void;     [vertexAttrib2f](#vertexattrib2f-1)(index: number, x: number, y: number): void;     [vertexAttrib2fv](#vertexattrib2fv-1)(index: number, values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/)): void;     [vertexAttrib2fv](#vertexattrib2fv-2)(index: number, values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/)): void;     [vertexAttrib3f](#vertexattrib3f-1)(index: number, x: number, y: number, z: number): void;     [vertexAttrib3fv](#vertexattrib3fv-1)(index: number, values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/)): void;     [vertexAttrib3fv](#vertexattrib3fv-2)(index: number, values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/)): void;     [vertexAttrib4f](#vertexattrib4f-1)(         index: number,         x: number,         y: number,         z: number,         w: number,     ): void;     [vertexAttrib4fv](#vertexattrib4fv-1)(index: number, values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/)): void;     [vertexAttrib4fv](#vertexattrib4fv-2)(index: number, values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/)): void;     [vertexAttribPointer](#vertexattribpointer-1)(         index: number,         size: number,         type: number,         normalized: boolean,         stride: number,         offset: number,     ): void;     [viewport](#viewport-2)(x: number, y: number, width: number, height: number): void; } #### Hierarchy ([View Summary](https://docs.maptiler.com/sdk-js/api-reference/hierarchy/#Externals.WebGLRenderingContextBase)) - WebGLRenderingContextBase - [WebGLRenderingContext](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContext/) - [WebGL2RenderingContext](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGL2RenderingContext/) ##### Index ### Properties[](#properties) [ACTIVE\_ATTRIBUTES](#active_attributes) [ACTIVE\_TEXTURE](#active_texture) [ACTIVE\_UNIFORMS](#active_uniforms) [ALIASED\_LINE\_WIDTH\_RANGE](#aliased_line_width_range) [ALIASED\_POINT\_SIZE\_RANGE](#aliased_point_size_range) [ALPHA](#alpha) [ALPHA\_BITS](#alpha_bits) [ALWAYS](#always) [ARRAY\_BUFFER](#array_buffer) [ARRAY\_BUFFER\_BINDING](#array_buffer_binding) [ATTACHED\_SHADERS](#attached_shaders) [BACK](#back) [BLEND](#blend) [BLEND\_COLOR](#blend_color) [BLEND\_DST\_ALPHA](#blend_dst_alpha) [BLEND\_DST\_RGB](#blend_dst_rgb) [BLEND\_EQUATION](#blend_equation) [BLEND\_EQUATION\_ALPHA](#blend_equation_alpha) [BLEND\_EQUATION\_RGB](#blend_equation_rgb) [BLEND\_SRC\_ALPHA](#blend_src_alpha) [BLEND\_SRC\_RGB](#blend_src_rgb) [BLUE\_BITS](#blue_bits) [BOOL](#bool) [BOOL\_VEC2](#bool_vec2) [BOOL\_VEC3](#bool_vec3) [BOOL\_VEC4](#bool_vec4) [BROWSER\_DEFAULT\_WEBGL](#browser_default_webgl) [BUFFER\_SIZE](#buffer_size) [BUFFER\_USAGE](#buffer_usage) [BYTE](#byte) [canvas](#canvas) [CCW](#ccw) [CLAMP\_TO\_EDGE](#clamp_to_edge) [COLOR\_ATTACHMENT0](#color_attachment0) [COLOR\_BUFFER\_BIT](#color_buffer_bit) [COLOR\_CLEAR\_VALUE](#color_clear_value) [COLOR\_WRITEMASK](#color_writemask) [COMPILE\_STATUS](#compile_status) [COMPRESSED\_TEXTURE\_FORMATS](#compressed_texture_formats) [CONSTANT\_ALPHA](#constant_alpha) [CONSTANT\_COLOR](#constant_color) [CONTEXT\_LOST\_WEBGL](#context_lost_webgl) [CULL\_FACE](#cull_face) [CULL\_FACE\_MODE](#cull_face_mode) [CURRENT\_PROGRAM](#current_program) [CURRENT\_VERTEX\_ATTRIB](#current_vertex_attrib) [CW](#cw) [DECR](#decr) [DECR\_WRAP](#decr_wrap) [DELETE\_STATUS](#delete_status) [DEPTH\_ATTACHMENT](#depth_attachment) [DEPTH\_BITS](#depth_bits) [DEPTH\_BUFFER\_BIT](#depth_buffer_bit) [DEPTH\_CLEAR\_VALUE](#depth_clear_value) [DEPTH\_COMPONENT](#depth_component) [DEPTH\_COMPONENT16](#depth_component16) [DEPTH\_FUNC](#depth_func) [DEPTH\_RANGE](#depth_range) [DEPTH\_STENCIL](#depth_stencil) [DEPTH\_STENCIL\_ATTACHMENT](#depth_stencil_attachment) [DEPTH\_TEST](#depth_test) [DEPTH\_WRITEMASK](#depth_writemask) [DITHER](#dither) [DONT\_CARE](#dont_care) [drawingBufferColorSpace](#drawingbuffercolorspace) [drawingBufferHeight](#drawingbufferheight) [drawingBufferWidth](#drawingbufferwidth) [DST\_ALPHA](#dst_alpha) [DST\_COLOR](#dst_color) [DYNAMIC\_DRAW](#dynamic_draw) [ELEMENT\_ARRAY\_BUFFER](#element_array_buffer) [ELEMENT\_ARRAY\_BUFFER\_BINDING](#element_array_buffer_binding) [EQUAL](#equal) [FASTEST](#fastest) [FLOAT](#float) [FLOAT\_MAT2](#float_mat2) [FLOAT\_MAT3](#float_mat3) [FLOAT\_MAT4](#float_mat4) [FLOAT\_VEC2](#float_vec2) [FLOAT\_VEC3](#float_vec3) [FLOAT\_VEC4](#float_vec4) [FRAGMENT\_SHADER](#fragment_shader) [FRAMEBUFFER](#framebuffer) [FRAMEBUFFER\_ATTACHMENT\_OBJECT\_NAME](#framebuffer_attachment_object_name) [FRAMEBUFFER\_ATTACHMENT\_OBJECT\_TYPE](#framebuffer_attachment_object_type) [FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_CUBE\_MAP\_FACE](#framebuffer_attachment_texture_cube_map_face) [FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_LEVEL](#framebuffer_attachment_texture_level) [FRAMEBUFFER\_BINDING](#framebuffer_binding) [FRAMEBUFFER\_COMPLETE](#framebuffer_complete) [FRAMEBUFFER\_INCOMPLETE\_ATTACHMENT](#framebuffer_incomplete_attachment) [FRAMEBUFFER\_INCOMPLETE\_DIMENSIONS](#framebuffer_incomplete_dimensions) [FRAMEBUFFER\_INCOMPLETE\_MISSING\_ATTACHMENT](#framebuffer_incomplete_missing_attachment) [FRAMEBUFFER\_UNSUPPORTED](#framebuffer_unsupported) [FRONT](#front) [FRONT\_AND\_BACK](#front_and_back) [FRONT\_FACE](#front_face) [FUNC\_ADD](#func_add) [FUNC\_REVERSE\_SUBTRACT](#func_reverse_subtract) [FUNC\_SUBTRACT](#func_subtract) [GENERATE\_MIPMAP\_HINT](#generate_mipmap_hint) [GEQUAL](#gequal) [GREATER](#greater) [GREEN\_BITS](#green_bits) [HIGH\_FLOAT](#high_float) [HIGH\_INT](#high_int) [IMPLEMENTATION\_COLOR\_READ\_FORMAT](#implementation_color_read_format) [IMPLEMENTATION\_COLOR\_READ\_TYPE](#implementation_color_read_type) [INCR](#incr) [INCR\_WRAP](#incr_wrap) [INT](#int) [INT\_VEC2](#int_vec2) [INT\_VEC3](#int_vec3) [INT\_VEC4](#int_vec4) [INVALID\_ENUM](#invalid_enum) [INVALID\_FRAMEBUFFER\_OPERATION](#invalid_framebuffer_operation) [INVALID\_OPERATION](#invalid_operation) [INVALID\_VALUE](#invalid_value) [INVERT](#invert) [KEEP](#keep) [LEQUAL](#lequal) [LESS](#less) [LINE\_LOOP](#line_loop) [LINE\_STRIP](#line_strip) [LINE\_WIDTH](#line_width) [LINEAR](#linear) [LINEAR\_MIPMAP\_LINEAR](#linear_mipmap_linear) [LINEAR\_MIPMAP\_NEAREST](#linear_mipmap_nearest) [LINES](#lines) [LINK\_STATUS](#link_status) [LOW\_FLOAT](#low_float) [LOW\_INT](#low_int) [LUMINANCE](#luminance) [LUMINANCE\_ALPHA](#luminance_alpha) [MAX\_COMBINED\_TEXTURE\_IMAGE\_UNITS](#max_combined_texture_image_units) [MAX\_CUBE\_MAP\_TEXTURE\_SIZE](#max_cube_map_texture_size) [MAX\_FRAGMENT\_UNIFORM\_VECTORS](#max_fragment_uniform_vectors) [MAX\_RENDERBUFFER\_SIZE](#max_renderbuffer_size) [MAX\_TEXTURE\_IMAGE\_UNITS](#max_texture_image_units) [MAX\_TEXTURE\_SIZE](#max_texture_size) [MAX\_VARYING\_VECTORS](#max_varying_vectors) [MAX\_VERTEX\_ATTRIBS](#max_vertex_attribs) [MAX\_VERTEX\_TEXTURE\_IMAGE\_UNITS](#max_vertex_texture_image_units) [MAX\_VERTEX\_UNIFORM\_VECTORS](#max_vertex_uniform_vectors) [MAX\_VIEWPORT\_DIMS](#max_viewport_dims) [MEDIUM\_FLOAT](#medium_float) [MEDIUM\_INT](#medium_int) [MIRRORED\_REPEAT](#mirrored_repeat) [NEAREST](#nearest) [NEAREST\_MIPMAP\_LINEAR](#nearest_mipmap_linear) [NEAREST\_MIPMAP\_NEAREST](#nearest_mipmap_nearest) [NEVER](#never) [NICEST](#nicest) [NO\_ERROR](#no_error) [NONE](#none) [NOTEQUAL](#notequal) [ONE](#one) [ONE\_MINUS\_CONSTANT\_ALPHA](#one_minus_constant_alpha) [ONE\_MINUS\_CONSTANT\_COLOR](#one_minus_constant_color) [ONE\_MINUS\_DST\_ALPHA](#one_minus_dst_alpha) [ONE\_MINUS\_DST\_COLOR](#one_minus_dst_color) [ONE\_MINUS\_SRC\_ALPHA](#one_minus_src_alpha) [ONE\_MINUS\_SRC\_COLOR](#one_minus_src_color) [OUT\_OF\_MEMORY](#out_of_memory) [PACK\_ALIGNMENT](#pack_alignment) [POINTS](#points) [POLYGON\_OFFSET\_FACTOR](#polygon_offset_factor) [POLYGON\_OFFSET\_FILL](#polygon_offset_fill) [POLYGON\_OFFSET\_UNITS](#polygon_offset_units) [RED\_BITS](#red_bits) [RENDERBUFFER](#renderbuffer) [RENDERBUFFER\_ALPHA\_SIZE](#renderbuffer_alpha_size) [RENDERBUFFER\_BINDING](#renderbuffer_binding) [RENDERBUFFER\_BLUE\_SIZE](#renderbuffer_blue_size) [RENDERBUFFER\_DEPTH\_SIZE](#renderbuffer_depth_size) [RENDERBUFFER\_GREEN\_SIZE](#renderbuffer_green_size) [RENDERBUFFER\_HEIGHT](#renderbuffer_height) [RENDERBUFFER\_INTERNAL\_FORMAT](#renderbuffer_internal_format) [RENDERBUFFER\_RED\_SIZE](#renderbuffer_red_size) [RENDERBUFFER\_STENCIL\_SIZE](#renderbuffer_stencil_size) [RENDERBUFFER\_WIDTH](#renderbuffer_width) [RENDERER](#renderer) [REPEAT](#repeat) [REPLACE](#replace) [RGB](#rgb) [RGB5\_A1](#rgb5_a1) [RGB565](#rgb565) [RGBA](#rgba) [RGBA4](#rgba4) [RGBA8](#rgba8) [SAMPLE\_ALPHA\_TO\_COVERAGE](#sample_alpha_to_coverage) [SAMPLE\_BUFFERS](#sample_buffers) [SAMPLE\_COVERAGE](#sample_coverage) [SAMPLE\_COVERAGE\_INVERT](#sample_coverage_invert) [SAMPLE\_COVERAGE\_VALUE](#sample_coverage_value) [SAMPLER\_2D](#sampler_2d) [SAMPLER\_CUBE](#sampler_cube) [SAMPLES](#samples) [SCISSOR\_BOX](#scissor_box) [SCISSOR\_TEST](#scissor_test) [SHADER\_TYPE](#shader_type) [SHADING\_LANGUAGE\_VERSION](#shading_language_version) [SHORT](#short) [SRC\_ALPHA](#src_alpha) [SRC\_ALPHA\_SATURATE](#src_alpha_saturate) [SRC\_COLOR](#src_color) [STATIC\_DRAW](#static_draw) [STENCIL\_ATTACHMENT](#stencil_attachment) [STENCIL\_BACK\_FAIL](#stencil_back_fail) [STENCIL\_BACK\_FUNC](#stencil_back_func) [STENCIL\_BACK\_PASS\_DEPTH\_FAIL](#stencil_back_pass_depth_fail) [STENCIL\_BACK\_PASS\_DEPTH\_PASS](#stencil_back_pass_depth_pass) [STENCIL\_BACK\_REF](#stencil_back_ref) [STENCIL\_BACK\_VALUE\_MASK](#stencil_back_value_mask) [STENCIL\_BACK\_WRITEMASK](#stencil_back_writemask) [STENCIL\_BITS](#stencil_bits) [STENCIL\_BUFFER\_BIT](#stencil_buffer_bit) [STENCIL\_CLEAR\_VALUE](#stencil_clear_value) [STENCIL\_FAIL](#stencil_fail) [STENCIL\_FUNC](#stencil_func) [STENCIL\_INDEX8](#stencil_index8) [STENCIL\_PASS\_DEPTH\_FAIL](#stencil_pass_depth_fail) [STENCIL\_PASS\_DEPTH\_PASS](#stencil_pass_depth_pass) [STENCIL\_REF](#stencil_ref) [STENCIL\_TEST](#stencil_test) [STENCIL\_VALUE\_MASK](#stencil_value_mask) [STENCIL\_WRITEMASK](#stencil_writemask) [STREAM\_DRAW](#stream_draw) [SUBPIXEL\_BITS](#subpixel_bits) [TEXTURE](#texture) [TEXTURE\_2D](#texture_2d) [TEXTURE\_BINDING\_2D](#texture_binding_2d) [TEXTURE\_BINDING\_CUBE\_MAP](#texture_binding_cube_map) [TEXTURE\_CUBE\_MAP](#texture_cube_map) [TEXTURE\_CUBE\_MAP\_NEGATIVE\_X](#texture_cube_map_negative_x) [TEXTURE\_CUBE\_MAP\_NEGATIVE\_Y](#texture_cube_map_negative_y) [TEXTURE\_CUBE\_MAP\_NEGATIVE\_Z](#texture_cube_map_negative_z) [TEXTURE\_CUBE\_MAP\_POSITIVE\_X](#texture_cube_map_positive_x) [TEXTURE\_CUBE\_MAP\_POSITIVE\_Y](#texture_cube_map_positive_y) [TEXTURE\_CUBE\_MAP\_POSITIVE\_Z](#texture_cube_map_positive_z) [TEXTURE\_MAG\_FILTER](#texture_mag_filter) [TEXTURE\_MIN\_FILTER](#texture_min_filter) [TEXTURE\_WRAP\_S](#texture_wrap_s) [TEXTURE\_WRAP\_T](#texture_wrap_t) [TEXTURE0](#texture0) [TEXTURE1](#texture1) [TEXTURE10](#texture10) [TEXTURE11](#texture11) [TEXTURE12](#texture12) [TEXTURE13](#texture13) [TEXTURE14](#texture14) [TEXTURE15](#texture15) [TEXTURE16](#texture16) [TEXTURE17](#texture17) [TEXTURE18](#texture18) [TEXTURE19](#texture19) [TEXTURE2](#texture2) [TEXTURE20](#texture20) [TEXTURE21](#texture21) [TEXTURE22](#texture22) [TEXTURE23](#texture23) [TEXTURE24](#texture24) [TEXTURE25](#texture25) [TEXTURE26](#texture26) [TEXTURE27](#texture27) [TEXTURE28](#texture28) [TEXTURE29](#texture29) [TEXTURE3](#texture3) [TEXTURE30](#texture30) [TEXTURE31](#texture31) [TEXTURE4](#texture4) [TEXTURE5](#texture5) [TEXTURE6](#texture6) [TEXTURE7](#texture7) [TEXTURE8](#texture8) [TEXTURE9](#texture9) [TRIANGLE\_FAN](#triangle_fan) [TRIANGLE\_STRIP](#triangle_strip) [TRIANGLES](#triangles) [UNPACK\_ALIGNMENT](#unpack_alignment) [UNPACK\_COLORSPACE\_CONVERSION\_WEBGL](#unpack_colorspace_conversion_webgl) [UNPACK\_FLIP\_Y\_WEBGL](#unpack_flip_y_webgl) [UNPACK\_PREMULTIPLY\_ALPHA\_WEBGL](#unpack_premultiply_alpha_webgl) [unpackColorSpace](#unpackcolorspace) [UNSIGNED\_BYTE](#unsigned_byte) [UNSIGNED\_INT](#unsigned_int) [UNSIGNED\_SHORT](#unsigned_short) [UNSIGNED\_SHORT\_4\_4\_4\_4](#unsigned_short_4_4_4_4) [UNSIGNED\_SHORT\_5\_5\_5\_1](#unsigned_short_5_5_5_1) [UNSIGNED\_SHORT\_5\_6\_5](#unsigned_short_5_6_5) [VALIDATE\_STATUS](#validate_status) [VENDOR](#vendor) [VERSION](#version) [VERTEX\_ATTRIB\_ARRAY\_BUFFER\_BINDING](#vertex_attrib_array_buffer_binding) [VERTEX\_ATTRIB\_ARRAY\_ENABLED](#vertex_attrib_array_enabled) [VERTEX\_ATTRIB\_ARRAY\_NORMALIZED](#vertex_attrib_array_normalized) [VERTEX\_ATTRIB\_ARRAY\_POINTER](#vertex_attrib_array_pointer) [VERTEX\_ATTRIB\_ARRAY\_SIZE](#vertex_attrib_array_size) [VERTEX\_ATTRIB\_ARRAY\_STRIDE](#vertex_attrib_array_stride) [VERTEX\_ATTRIB\_ARRAY\_TYPE](#vertex_attrib_array_type) [VERTEX\_SHADER](#vertex_shader) [VIEWPORT](#viewport) [ZERO](#zero) ### Methods[](#methods) [activeTexture](#activetexture) [attachShader](#attachshader) [bindAttribLocation](#bindattriblocation) [bindBuffer](#bindbuffer) [bindFramebuffer](#bindframebuffer) [bindRenderbuffer](#bindrenderbuffer) [bindTexture](#bindtexture) [blendColor](#blendcolor) [blendEquation](#blendequation) [blendEquationSeparate](#blendequationseparate) [blendFunc](#blendfunc) [blendFuncSeparate](#blendfuncseparate) [checkFramebufferStatus](#checkframebufferstatus) [clear](#clear) [clearColor](#clearcolor) [clearDepth](#cleardepth) [clearStencil](#clearstencil) [colorMask](#colormask) [compileShader](#compileshader) [copyTexImage2D](#copyteximage2d) [copyTexSubImage2D](#copytexsubimage2d) [createBuffer](#createbuffer) [createFramebuffer](#createframebuffer) [createProgram](#createprogram) [createRenderbuffer](#createrenderbuffer) [createShader](#createshader) [createTexture](#createtexture) [cullFace](#cullface) [deleteBuffer](#deletebuffer) [deleteFramebuffer](#deleteframebuffer) [deleteProgram](#deleteprogram) [deleteRenderbuffer](#deleterenderbuffer) [deleteShader](#deleteshader) [deleteTexture](#deletetexture) [depthFunc](#depthfunc) [depthMask](#depthmask) [depthRange](#depthrange) [detachShader](#detachshader) [disable](#disable) [disableVertexAttribArray](#disablevertexattribarray) [drawArrays](#drawarrays) [drawElements](#drawelements) [enable](#enable) [enableVertexAttribArray](#enablevertexattribarray) [finish](#finish) [flush](#flush) [framebufferRenderbuffer](#framebufferrenderbuffer) [framebufferTexture2D](#framebuffertexture2d) [frontFace](#frontface) [generateMipmap](#generatemipmap) [getActiveAttrib](#getactiveattrib) [getActiveUniform](#getactiveuniform) [getAttachedShaders](#getattachedshaders) [getAttribLocation](#getattriblocation) [getBufferParameter](#getbufferparameter) [getContextAttributes](#getcontextattributes) [getError](#geterror) [getExtension](#getextension) [getFramebufferAttachmentParameter](#getframebufferattachmentparameter) [getParameter](#getparameter) [getProgramInfoLog](#getprograminfolog) [getProgramParameter](#getprogramparameter) [getRenderbufferParameter](#getrenderbufferparameter) [getShaderInfoLog](#getshaderinfolog) [getShaderParameter](#getshaderparameter) [getShaderPrecisionFormat](#getshaderprecisionformat) [getShaderSource](#getshadersource) [getSupportedExtensions](#getsupportedextensions) [getTexParameter](#gettexparameter) [getUniform](#getuniform) [getUniformLocation](#getuniformlocation) [getVertexAttrib](#getvertexattrib) [getVertexAttribOffset](#getvertexattriboffset) [hint](#hint) [isBuffer](#isbuffer) [isContextLost](#iscontextlost) [isEnabled](#isenabled) [isFramebuffer](#isframebuffer) [isProgram](#isprogram) [isRenderbuffer](#isrenderbuffer) [isShader](#isshader) [isTexture](#istexture) [lineWidth](#linewidth) [linkProgram](#linkprogram) [pixelStorei](#pixelstorei) [polygonOffset](#polygonoffset) [renderbufferStorage](#renderbufferstorage) [sampleCoverage](#samplecoverage) [scissor](#scissor) [shaderSource](#shadersource) [stencilFunc](#stencilfunc) [stencilFuncSeparate](#stencilfuncseparate) [stencilMask](#stencilmask) [stencilMaskSeparate](#stencilmaskseparate) [stencilOp](#stencilop) [stencilOpSeparate](#stencilopseparate) [texParameterf](#texparameterf) [texParameteri](#texparameteri) [uniform1f](#uniform1f) [uniform1i](#uniform1i) [uniform2f](#uniform2f) [uniform2i](#uniform2i) [uniform3f](#uniform3f) [uniform3i](#uniform3i) [uniform4f](#uniform4f) [uniform4i](#uniform4i) [useProgram](#useprogram) [validateProgram](#validateprogram) [vertexAttrib1f](#vertexattrib1f) [vertexAttrib1fv](#vertexattrib1fv) [vertexAttrib2f](#vertexattrib2f) [vertexAttrib2fv](#vertexattrib2fv) [vertexAttrib3f](#vertexattrib3f) [vertexAttrib3fv](#vertexattrib3fv) [vertexAttrib4f](#vertexattrib4f) [vertexAttrib4fv](#vertexattrib4fv) [vertexAttribPointer](#vertexattribpointer) [viewport](#viewport-1) ## Properties[](#properties-1) ### `Readonly`ACTIVE\_ATTRIBUTES[](#active_attributes) ACTIVE\_ATTRIBUTES: 35721 ### `Readonly`ACTIVE\_TEXTURE[](#active_texture) ACTIVE\_TEXTURE: 34016 ### `Readonly`ACTIVE\_UNIFORMS[](#active_uniforms) ACTIVE\_UNIFORMS: 35718 ### `Readonly`ALIASED\_LINE\_WIDTH\_RANGE[](#aliased_line_width_range) ALIASED\_LINE\_WIDTH\_RANGE: 33902 ### `Readonly`ALIASED\_POINT\_SIZE\_RANGE[](#aliased_point_size_range) ALIASED\_POINT\_SIZE\_RANGE: 33901 ### `Readonly`ALPHA[](#alpha) ALPHA: 6406 ### `Readonly`ALPHA\_BITS[](#alpha_bits) ALPHA\_BITS: 3413 ### `Readonly`ALWAYS[](#always) ALWAYS: 519 ### `Readonly`ARRAY\_BUFFER[](#array_buffer) ARRAY\_BUFFER: 34962 ### `Readonly`ARRAY\_BUFFER\_BINDING[](#array_buffer_binding) ARRAY\_BUFFER\_BINDING: 34964 ### `Readonly`ATTACHED\_SHADERS[](#attached_shaders) ATTACHED\_SHADERS: 35717 ### `Readonly`BACK[](#back) BACK: 1029 ### `Readonly`BLEND[](#blend) BLEND: 3042 ### `Readonly`BLEND\_COLOR[](#blend_color) BLEND\_COLOR: 32773 ### `Readonly`BLEND\_DST\_ALPHA[](#blend_dst_alpha) BLEND\_DST\_ALPHA: 32970 ### `Readonly`BLEND\_DST\_RGB[](#blend_dst_rgb) BLEND\_DST\_RGB: 32968 ### `Readonly`BLEND\_EQUATION[](#blend_equation) BLEND\_EQUATION: 32777 ### `Readonly`BLEND\_EQUATION\_ALPHA[](#blend_equation_alpha) BLEND\_EQUATION\_ALPHA: 34877 ### `Readonly`BLEND\_EQUATION\_RGB[](#blend_equation_rgb) BLEND\_EQUATION\_RGB: 32777 ### `Readonly`BLEND\_SRC\_ALPHA[](#blend_src_alpha) BLEND\_SRC\_ALPHA: 32971 ### `Readonly`BLEND\_SRC\_RGB[](#blend_src_rgb) BLEND\_SRC\_RGB: 32969 ### `Readonly`BLUE\_BITS[](#blue_bits) BLUE\_BITS: 3412 ### `Readonly`BOOL[](#bool) BOOL: 35670 ### `Readonly`BOOL\_VEC2[](#bool_vec2) BOOL\_VEC2: 35671 ### `Readonly`BOOL\_VEC3[](#bool_vec3) BOOL\_VEC3: 35672 ### `Readonly`BOOL\_VEC4[](#bool_vec4) BOOL\_VEC4: 35673 ### `Readonly`BROWSER\_DEFAULT\_WEBGL[](#browser_default_webgl) BROWSER\_DEFAULT\_WEBGL: 37444 ### `Readonly`BUFFER\_SIZE[](#buffer_size) BUFFER\_SIZE: 34660 ### `Readonly`BUFFER\_USAGE[](#buffer_usage) BUFFER\_USAGE: 34661 ### `Readonly`BYTE[](#byte) BYTE: 5120 ### `Readonly`canvas[](#canvas) canvas: [OffscreenCanvas](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OffscreenCanvas/) | [HTMLCanvasElement](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.HTMLCanvasElement/) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/canvas) ### `Readonly`CCW[](#ccw) CCW: 2305 ### `Readonly`CLAMP\_TO\_EDGE[](#clamp_to_edge) CLAMP\_TO\_EDGE: 33071 ### `Readonly`COLOR\_ATTACHMENT0[](#color_attachment0) COLOR\_ATTACHMENT0: 36064 ### `Readonly`COLOR\_BUFFER\_BIT[](#color_buffer_bit) COLOR\_BUFFER\_BIT: 16384 ### `Readonly`COLOR\_CLEAR\_VALUE[](#color_clear_value) COLOR\_CLEAR\_VALUE: 3106 ### `Readonly`COLOR\_WRITEMASK[](#color_writemask) COLOR\_WRITEMASK: 3107 ### `Readonly`COMPILE\_STATUS[](#compile_status) COMPILE\_STATUS: 35713 ### `Readonly`COMPRESSED\_TEXTURE\_FORMATS[](#compressed_texture_formats) COMPRESSED\_TEXTURE\_FORMATS: 34467 ### `Readonly`CONSTANT\_ALPHA[](#constant_alpha) CONSTANT\_ALPHA: 32771 ### `Readonly`CONSTANT\_COLOR[](#constant_color) CONSTANT\_COLOR: 32769 ### `Readonly`CONTEXT\_LOST\_WEBGL[](#context_lost_webgl) CONTEXT\_LOST\_WEBGL: 37442 ### `Readonly`CULL\_FACE[](#cull_face) CULL\_FACE: 2884 ### `Readonly`CULL\_FACE\_MODE[](#cull_face_mode) CULL\_FACE\_MODE: 2885 ### `Readonly`CURRENT\_PROGRAM[](#current_program) CURRENT\_PROGRAM: 35725 ### `Readonly`CURRENT\_VERTEX\_ATTRIB[](#current_vertex_attrib) CURRENT\_VERTEX\_ATTRIB: 34342 ### `Readonly`CW[](#cw) CW: 2304 ### `Readonly`DECR[](#decr) DECR: 7683 ### `Readonly`DECR\_WRAP[](#decr_wrap) DECR\_WRAP: 34056 ### `Readonly`DELETE\_STATUS[](#delete_status) DELETE\_STATUS: 35712 ### `Readonly`DEPTH\_ATTACHMENT[](#depth_attachment) DEPTH\_ATTACHMENT: 36096 ### `Readonly`DEPTH\_BITS[](#depth_bits) DEPTH\_BITS: 3414 ### `Readonly`DEPTH\_BUFFER\_BIT[](#depth_buffer_bit) DEPTH\_BUFFER\_BIT: 256 ### `Readonly`DEPTH\_CLEAR\_VALUE[](#depth_clear_value) DEPTH\_CLEAR\_VALUE: 2931 ### `Readonly`DEPTH\_COMPONENT[](#depth_component) DEPTH\_COMPONENT: 6402 ### `Readonly`DEPTH\_COMPONENT16[](#depth_component16) DEPTH\_COMPONENT16: 33189 ### `Readonly`DEPTH\_FUNC[](#depth_func) DEPTH\_FUNC: 2932 ### `Readonly`DEPTH\_RANGE[](#depth_range) DEPTH\_RANGE: 2928 ### `Readonly`DEPTH\_STENCIL[](#depth_stencil) DEPTH\_STENCIL: 34041 ### `Readonly`DEPTH\_STENCIL\_ATTACHMENT[](#depth_stencil_attachment) DEPTH\_STENCIL\_ATTACHMENT: 33306 ### `Readonly`DEPTH\_TEST[](#depth_test) DEPTH\_TEST: 2929 ### `Readonly`DEPTH\_WRITEMASK[](#depth_writemask) DEPTH\_WRITEMASK: 2930 ### `Readonly`DITHER[](#dither) DITHER: 3024 ### `Readonly`DONT\_CARE[](#dont_care) DONT\_CARE: 4352 ### drawingBufferColorSpace[](#drawingbuffercolorspace) drawingBufferColorSpace: [PredefinedColorSpace](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.PredefinedColorSpace/) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/drawingBufferColorSpace) ### `Readonly`drawingBufferHeight[](#drawingbufferheight) drawingBufferHeight: number [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawingBufferHeight) ### `Readonly`drawingBufferWidth[](#drawingbufferwidth) drawingBufferWidth: number [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawingBufferWidth) ### `Readonly`DST\_ALPHA[](#dst_alpha) DST\_ALPHA: 772 ### `Readonly`DST\_COLOR[](#dst_color) DST\_COLOR: 774 ### `Readonly`DYNAMIC\_DRAW[](#dynamic_draw) DYNAMIC\_DRAW: 35048 ### `Readonly`ELEMENT\_ARRAY\_BUFFER[](#element_array_buffer) ELEMENT\_ARRAY\_BUFFER: 34963 ### `Readonly`ELEMENT\_ARRAY\_BUFFER\_BINDING[](#element_array_buffer_binding) ELEMENT\_ARRAY\_BUFFER\_BINDING: 34965 ### `Readonly`EQUAL[](#equal) EQUAL: 514 ### `Readonly`FASTEST[](#fastest) FASTEST: 4353 ### `Readonly`FLOAT[](#float) FLOAT: 5126 ### `Readonly`FLOAT\_MAT2[](#float_mat2) FLOAT\_MAT2: 35674 ### `Readonly`FLOAT\_MAT3[](#float_mat3) FLOAT\_MAT3: 35675 ### `Readonly`FLOAT\_MAT4[](#float_mat4) FLOAT\_MAT4: 35676 ### `Readonly`FLOAT\_VEC2[](#float_vec2) FLOAT\_VEC2: 35664 ### `Readonly`FLOAT\_VEC3[](#float_vec3) FLOAT\_VEC3: 35665 ### `Readonly`FLOAT\_VEC4[](#float_vec4) FLOAT\_VEC4: 35666 ### `Readonly`FRAGMENT\_SHADER[](#fragment_shader) FRAGMENT\_SHADER: 35632 ### `Readonly`FRAMEBUFFER[](#framebuffer) FRAMEBUFFER: 36160 ### `Readonly`FRAMEBUFFER\_ATTACHMENT\_OBJECT\_NAME[](#framebuffer_attachment_object_name) FRAMEBUFFER\_ATTACHMENT\_OBJECT\_NAME: 36049 ### `Readonly`FRAMEBUFFER\_ATTACHMENT\_OBJECT\_TYPE[](#framebuffer_attachment_object_type) FRAMEBUFFER\_ATTACHMENT\_OBJECT\_TYPE: 36048 ### `Readonly`FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_CUBE\_MAP\_FACE[](#framebuffer_attachment_texture_cube_map_face) FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_CUBE\_MAP\_FACE: 36051 ### `Readonly`FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_LEVEL[](#framebuffer_attachment_texture_level) FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_LEVEL: 36050 ### `Readonly`FRAMEBUFFER\_BINDING[](#framebuffer_binding) FRAMEBUFFER\_BINDING: 36006 ### `Readonly`FRAMEBUFFER\_COMPLETE[](#framebuffer_complete) FRAMEBUFFER\_COMPLETE: 36053 ### `Readonly`FRAMEBUFFER\_INCOMPLETE\_ATTACHMENT[](#framebuffer_incomplete_attachment) FRAMEBUFFER\_INCOMPLETE\_ATTACHMENT: 36054 ### `Readonly`FRAMEBUFFER\_INCOMPLETE\_DIMENSIONS[](#framebuffer_incomplete_dimensions) FRAMEBUFFER\_INCOMPLETE\_DIMENSIONS: 36057 ### `Readonly`FRAMEBUFFER\_INCOMPLETE\_MISSING\_ATTACHMENT[](#framebuffer_incomplete_missing_attachment) FRAMEBUFFER\_INCOMPLETE\_MISSING\_ATTACHMENT: 36055 ### `Readonly`FRAMEBUFFER\_UNSUPPORTED[](#framebuffer_unsupported) FRAMEBUFFER\_UNSUPPORTED: 36061 ### `Readonly`FRONT[](#front) FRONT: 1028 ### `Readonly`FRONT\_AND\_BACK[](#front_and_back) FRONT\_AND\_BACK: 1032 ### `Readonly`FRONT\_FACE[](#front_face) FRONT\_FACE: 2886 ### `Readonly`FUNC\_ADD[](#func_add) FUNC\_ADD: 32774 ### `Readonly`FUNC\_REVERSE\_SUBTRACT[](#func_reverse_subtract) FUNC\_REVERSE\_SUBTRACT: 32779 ### `Readonly`FUNC\_SUBTRACT[](#func_subtract) FUNC\_SUBTRACT: 32778 ### `Readonly`GENERATE\_MIPMAP\_HINT[](#generate_mipmap_hint) GENERATE\_MIPMAP\_HINT: 33170 ### `Readonly`GEQUAL[](#gequal) GEQUAL: 518 ### `Readonly`GREATER[](#greater) GREATER: 516 ### `Readonly`GREEN\_BITS[](#green_bits) GREEN\_BITS: 3411 ### `Readonly`HIGH\_FLOAT[](#high_float) HIGH\_FLOAT: 36338 ### `Readonly`HIGH\_INT[](#high_int) HIGH\_INT: 36341 ### `Readonly`IMPLEMENTATION\_COLOR\_READ\_FORMAT[](#implementation_color_read_format) IMPLEMENTATION\_COLOR\_READ\_FORMAT: 35739 ### `Readonly`IMPLEMENTATION\_COLOR\_READ\_TYPE[](#implementation_color_read_type) IMPLEMENTATION\_COLOR\_READ\_TYPE: 35738 ### `Readonly`INCR[](#incr) INCR: 7682 ### `Readonly`INCR\_WRAP[](#incr_wrap) INCR\_WRAP: 34055 ### `Readonly`INT[](#int) INT: 5124 ### `Readonly`INT\_VEC2[](#int_vec2) INT\_VEC2: 35667 ### `Readonly`INT\_VEC3[](#int_vec3) INT\_VEC3: 35668 ### `Readonly`INT\_VEC4[](#int_vec4) INT\_VEC4: 35669 ### `Readonly`INVALID\_ENUM[](#invalid_enum) INVALID\_ENUM: 1280 ### `Readonly`INVALID\_FRAMEBUFFER\_OPERATION[](#invalid_framebuffer_operation) INVALID\_FRAMEBUFFER\_OPERATION: 1286 ### `Readonly`INVALID\_OPERATION[](#invalid_operation) INVALID\_OPERATION: 1282 ### `Readonly`INVALID\_VALUE[](#invalid_value) INVALID\_VALUE: 1281 ### `Readonly`INVERT[](#invert) INVERT: 5386 ### `Readonly`KEEP[](#keep) KEEP: 7680 ### `Readonly`LEQUAL[](#lequal) LEQUAL: 515 ### `Readonly`LESS[](#less) LESS: 513 ### `Readonly`LINE\_LOOP[](#line_loop) LINE\_LOOP: 2 ### `Readonly`LINE\_STRIP[](#line_strip) LINE\_STRIP: 3 ### `Readonly`LINE\_WIDTH[](#line_width) LINE\_WIDTH: 2849 ### `Readonly`LINEAR[](#linear) LINEAR: 9729 ### `Readonly`LINEAR\_MIPMAP\_LINEAR[](#linear_mipmap_linear) LINEAR\_MIPMAP\_LINEAR: 9987 ### `Readonly`LINEAR\_MIPMAP\_NEAREST[](#linear_mipmap_nearest) LINEAR\_MIPMAP\_NEAREST: 9985 ### `Readonly`LINES[](#lines) LINES: 1 ### `Readonly`LINK\_STATUS[](#link_status) LINK\_STATUS: 35714 ### `Readonly`LOW\_FLOAT[](#low_float) LOW\_FLOAT: 36336 ### `Readonly`LOW\_INT[](#low_int) LOW\_INT: 36339 ### `Readonly`LUMINANCE[](#luminance) LUMINANCE: 6409 ### `Readonly`LUMINANCE\_ALPHA[](#luminance_alpha) LUMINANCE\_ALPHA: 6410 ### `Readonly`MAX\_COMBINED\_TEXTURE\_IMAGE\_UNITS[](#max_combined_texture_image_units) MAX\_COMBINED\_TEXTURE\_IMAGE\_UNITS: 35661 ### `Readonly`MAX\_CUBE\_MAP\_TEXTURE\_SIZE[](#max_cube_map_texture_size) MAX\_CUBE\_MAP\_TEXTURE\_SIZE: 34076 ### `Readonly`MAX\_FRAGMENT\_UNIFORM\_VECTORS[](#max_fragment_uniform_vectors) MAX\_FRAGMENT\_UNIFORM\_VECTORS: 36349 ### `Readonly`MAX\_RENDERBUFFER\_SIZE[](#max_renderbuffer_size) MAX\_RENDERBUFFER\_SIZE: 34024 ### `Readonly`MAX\_TEXTURE\_IMAGE\_UNITS[](#max_texture_image_units) MAX\_TEXTURE\_IMAGE\_UNITS: 34930 ### `Readonly`MAX\_TEXTURE\_SIZE[](#max_texture_size) MAX\_TEXTURE\_SIZE: 3379 ### `Readonly`MAX\_VARYING\_VECTORS[](#max_varying_vectors) MAX\_VARYING\_VECTORS: 36348 ### `Readonly`MAX\_VERTEX\_ATTRIBS[](#max_vertex_attribs) MAX\_VERTEX\_ATTRIBS: 34921 ### `Readonly`MAX\_VERTEX\_TEXTURE\_IMAGE\_UNITS[](#max_vertex_texture_image_units) MAX\_VERTEX\_TEXTURE\_IMAGE\_UNITS: 35660 ### `Readonly`MAX\_VERTEX\_UNIFORM\_VECTORS[](#max_vertex_uniform_vectors) MAX\_VERTEX\_UNIFORM\_VECTORS: 36347 ### `Readonly`MAX\_VIEWPORT\_DIMS[](#max_viewport_dims) MAX\_VIEWPORT\_DIMS: 3386 ### `Readonly`MEDIUM\_FLOAT[](#medium_float) MEDIUM\_FLOAT: 36337 ### `Readonly`MEDIUM\_INT[](#medium_int) MEDIUM\_INT: 36340 ### `Readonly`MIRRORED\_REPEAT[](#mirrored_repeat) MIRRORED\_REPEAT: 33648 ### `Readonly`NEAREST[](#nearest) NEAREST: 9728 ### `Readonly`NEAREST\_MIPMAP\_LINEAR[](#nearest_mipmap_linear) NEAREST\_MIPMAP\_LINEAR: 9986 ### `Readonly`NEAREST\_MIPMAP\_NEAREST[](#nearest_mipmap_nearest) NEAREST\_MIPMAP\_NEAREST: 9984 ### `Readonly`NEVER[](#never) NEVER: 512 ### `Readonly`NICEST[](#nicest) NICEST: 4354 ### `Readonly`NO\_ERROR[](#no_error) NO\_ERROR: 0 ### `Readonly`NONE[](#none) NONE: 0 ### `Readonly`NOTEQUAL[](#notequal) NOTEQUAL: 517 ### `Readonly`ONE[](#one) ONE: 1 ### `Readonly`ONE\_MINUS\_CONSTANT\_ALPHA[](#one_minus_constant_alpha) ONE\_MINUS\_CONSTANT\_ALPHA: 32772 ### `Readonly`ONE\_MINUS\_CONSTANT\_COLOR[](#one_minus_constant_color) ONE\_MINUS\_CONSTANT\_COLOR: 32770 ### `Readonly`ONE\_MINUS\_DST\_ALPHA[](#one_minus_dst_alpha) ONE\_MINUS\_DST\_ALPHA: 773 ### `Readonly`ONE\_MINUS\_DST\_COLOR[](#one_minus_dst_color) ONE\_MINUS\_DST\_COLOR: 775 ### `Readonly`ONE\_MINUS\_SRC\_ALPHA[](#one_minus_src_alpha) ONE\_MINUS\_SRC\_ALPHA: 771 ### `Readonly`ONE\_MINUS\_SRC\_COLOR[](#one_minus_src_color) ONE\_MINUS\_SRC\_COLOR: 769 ### `Readonly`OUT\_OF\_MEMORY[](#out_of_memory) OUT\_OF\_MEMORY: 1285 ### `Readonly`PACK\_ALIGNMENT[](#pack_alignment) PACK\_ALIGNMENT: 3333 ### `Readonly`POINTS[](#points) POINTS: 0 ### `Readonly`POLYGON\_OFFSET\_FACTOR[](#polygon_offset_factor) POLYGON\_OFFSET\_FACTOR: 32824 ### `Readonly`POLYGON\_OFFSET\_FILL[](#polygon_offset_fill) POLYGON\_OFFSET\_FILL: 32823 ### `Readonly`POLYGON\_OFFSET\_UNITS[](#polygon_offset_units) POLYGON\_OFFSET\_UNITS: 10752 ### `Readonly`RED\_BITS[](#red_bits) RED\_BITS: 3410 ### `Readonly`RENDERBUFFER[](#renderbuffer) RENDERBUFFER: 36161 ### `Readonly`RENDERBUFFER\_ALPHA\_SIZE[](#renderbuffer_alpha_size) RENDERBUFFER\_ALPHA\_SIZE: 36179 ### `Readonly`RENDERBUFFER\_BINDING[](#renderbuffer_binding) RENDERBUFFER\_BINDING: 36007 ### `Readonly`RENDERBUFFER\_BLUE\_SIZE[](#renderbuffer_blue_size) RENDERBUFFER\_BLUE\_SIZE: 36178 ### `Readonly`RENDERBUFFER\_DEPTH\_SIZE[](#renderbuffer_depth_size) RENDERBUFFER\_DEPTH\_SIZE: 36180 ### `Readonly`RENDERBUFFER\_GREEN\_SIZE[](#renderbuffer_green_size) RENDERBUFFER\_GREEN\_SIZE: 36177 ### `Readonly`RENDERBUFFER\_HEIGHT[](#renderbuffer_height) RENDERBUFFER\_HEIGHT: 36163 ### `Readonly`RENDERBUFFER\_INTERNAL\_FORMAT[](#renderbuffer_internal_format) RENDERBUFFER\_INTERNAL\_FORMAT: 36164 ### `Readonly`RENDERBUFFER\_RED\_SIZE[](#renderbuffer_red_size) RENDERBUFFER\_RED\_SIZE: 36176 ### `Readonly`RENDERBUFFER\_STENCIL\_SIZE[](#renderbuffer_stencil_size) RENDERBUFFER\_STENCIL\_SIZE: 36181 ### `Readonly`RENDERBUFFER\_WIDTH[](#renderbuffer_width) RENDERBUFFER\_WIDTH: 36162 ### `Readonly`RENDERER[](#renderer) RENDERER: 7937 ### `Readonly`REPEAT[](#repeat) REPEAT: 10497 ### `Readonly`REPLACE[](#replace) REPLACE: 7681 ### `Readonly`RGB[](#rgb) RGB: 6407 ### `Readonly`RGB5\_A1[](#rgb5_a1) RGB5\_A1: 32855 ### `Readonly`RGB565[](#rgb565) RGB565: 36194 ### `Readonly`RGBA[](#rgba) RGBA: 6408 ### `Readonly`RGBA4[](#rgba4) RGBA4: 32854 ### `Readonly`RGBA8[](#rgba8) RGBA8: 32856 ### `Readonly`SAMPLE\_ALPHA\_TO\_COVERAGE[](#sample_alpha_to_coverage) SAMPLE\_ALPHA\_TO\_COVERAGE: 32926 ### `Readonly`SAMPLE\_BUFFERS[](#sample_buffers) SAMPLE\_BUFFERS: 32936 ### `Readonly`SAMPLE\_COVERAGE[](#sample_coverage) SAMPLE\_COVERAGE: 32928 ### `Readonly`SAMPLE\_COVERAGE\_INVERT[](#sample_coverage_invert) SAMPLE\_COVERAGE\_INVERT: 32939 ### `Readonly`SAMPLE\_COVERAGE\_VALUE[](#sample_coverage_value) SAMPLE\_COVERAGE\_VALUE: 32938 ### `Readonly`SAMPLER\_2D[](#sampler_2d) SAMPLER\_2D: 35678 ### `Readonly`SAMPLER\_CUBE[](#sampler_cube) SAMPLER\_CUBE: 35680 ### `Readonly`SAMPLES[](#samples) SAMPLES: 32937 ### `Readonly`SCISSOR\_BOX[](#scissor_box) SCISSOR\_BOX: 3088 ### `Readonly`SCISSOR\_TEST[](#scissor_test) SCISSOR\_TEST: 3089 ### `Readonly`SHADER\_TYPE[](#shader_type) SHADER\_TYPE: 35663 ### `Readonly`SHADING\_LANGUAGE\_VERSION[](#shading_language_version) SHADING\_LANGUAGE\_VERSION: 35724 ### `Readonly`SHORT[](#short) SHORT: 5122 ### `Readonly`SRC\_ALPHA[](#src_alpha) SRC\_ALPHA: 770 ### `Readonly`SRC\_ALPHA\_SATURATE[](#src_alpha_saturate) SRC\_ALPHA\_SATURATE: 776 ### `Readonly`SRC\_COLOR[](#src_color) SRC\_COLOR: 768 ### `Readonly`STATIC\_DRAW[](#static_draw) STATIC\_DRAW: 35044 ### `Readonly`STENCIL\_ATTACHMENT[](#stencil_attachment) STENCIL\_ATTACHMENT: 36128 ### `Readonly`STENCIL\_BACK\_FAIL[](#stencil_back_fail) STENCIL\_BACK\_FAIL: 34817 ### `Readonly`STENCIL\_BACK\_FUNC[](#stencil_back_func) STENCIL\_BACK\_FUNC: 34816 ### `Readonly`STENCIL\_BACK\_PASS\_DEPTH\_FAIL[](#stencil_back_pass_depth_fail) STENCIL\_BACK\_PASS\_DEPTH\_FAIL: 34818 ### `Readonly`STENCIL\_BACK\_PASS\_DEPTH\_PASS[](#stencil_back_pass_depth_pass) STENCIL\_BACK\_PASS\_DEPTH\_PASS: 34819 ### `Readonly`STENCIL\_BACK\_REF[](#stencil_back_ref) STENCIL\_BACK\_REF: 36003 ### `Readonly`STENCIL\_BACK\_VALUE\_MASK[](#stencil_back_value_mask) STENCIL\_BACK\_VALUE\_MASK: 36004 ### `Readonly`STENCIL\_BACK\_WRITEMASK[](#stencil_back_writemask) STENCIL\_BACK\_WRITEMASK: 36005 ### `Readonly`STENCIL\_BITS[](#stencil_bits) STENCIL\_BITS: 3415 ### `Readonly`STENCIL\_BUFFER\_BIT[](#stencil_buffer_bit) STENCIL\_BUFFER\_BIT: 1024 ### `Readonly`STENCIL\_CLEAR\_VALUE[](#stencil_clear_value) STENCIL\_CLEAR\_VALUE: 2961 ### `Readonly`STENCIL\_FAIL[](#stencil_fail) STENCIL\_FAIL: 2964 ### `Readonly`STENCIL\_FUNC[](#stencil_func) STENCIL\_FUNC: 2962 ### `Readonly`STENCIL\_INDEX8[](#stencil_index8) STENCIL\_INDEX8: 36168 ### `Readonly`STENCIL\_PASS\_DEPTH\_FAIL[](#stencil_pass_depth_fail) STENCIL\_PASS\_DEPTH\_FAIL: 2965 ### `Readonly`STENCIL\_PASS\_DEPTH\_PASS[](#stencil_pass_depth_pass) STENCIL\_PASS\_DEPTH\_PASS: 2966 ### `Readonly`STENCIL\_REF[](#stencil_ref) STENCIL\_REF: 2967 ### `Readonly`STENCIL\_TEST[](#stencil_test) STENCIL\_TEST: 2960 ### `Readonly`STENCIL\_VALUE\_MASK[](#stencil_value_mask) STENCIL\_VALUE\_MASK: 2963 ### `Readonly`STENCIL\_WRITEMASK[](#stencil_writemask) STENCIL\_WRITEMASK: 2968 ### `Readonly`STREAM\_DRAW[](#stream_draw) STREAM\_DRAW: 35040 ### `Readonly`SUBPIXEL\_BITS[](#subpixel_bits) SUBPIXEL\_BITS: 3408 ### `Readonly`TEXTURE[](#texture) TEXTURE: 5890 ### `Readonly`TEXTURE\_2D[](#texture_2d) TEXTURE\_2D: 3553 ### `Readonly`TEXTURE\_BINDING\_2D[](#texture_binding_2d) TEXTURE\_BINDING\_2D: 32873 ### `Readonly`TEXTURE\_BINDING\_CUBE\_MAP[](#texture_binding_cube_map) TEXTURE\_BINDING\_CUBE\_MAP: 34068 ### `Readonly`TEXTURE\_CUBE\_MAP[](#texture_cube_map) TEXTURE\_CUBE\_MAP: 34067 ### `Readonly`TEXTURE\_CUBE\_MAP\_NEGATIVE\_X[](#texture_cube_map_negative_x) TEXTURE\_CUBE\_MAP\_NEGATIVE\_X: 34070 ### `Readonly`TEXTURE\_CUBE\_MAP\_NEGATIVE\_Y[](#texture_cube_map_negative_y) TEXTURE\_CUBE\_MAP\_NEGATIVE\_Y: 34072 ### `Readonly`TEXTURE\_CUBE\_MAP\_NEGATIVE\_Z[](#texture_cube_map_negative_z) TEXTURE\_CUBE\_MAP\_NEGATIVE\_Z: 34074 ### `Readonly`TEXTURE\_CUBE\_MAP\_POSITIVE\_X[](#texture_cube_map_positive_x) TEXTURE\_CUBE\_MAP\_POSITIVE\_X: 34069 ### `Readonly`TEXTURE\_CUBE\_MAP\_POSITIVE\_Y[](#texture_cube_map_positive_y) TEXTURE\_CUBE\_MAP\_POSITIVE\_Y: 34071 ### `Readonly`TEXTURE\_CUBE\_MAP\_POSITIVE\_Z[](#texture_cube_map_positive_z) TEXTURE\_CUBE\_MAP\_POSITIVE\_Z: 34073 ### `Readonly`TEXTURE\_MAG\_FILTER[](#texture_mag_filter) TEXTURE\_MAG\_FILTER: 10240 ### `Readonly`TEXTURE\_MIN\_FILTER[](#texture_min_filter) TEXTURE\_MIN\_FILTER: 10241 ### `Readonly`TEXTURE\_WRAP\_S[](#texture_wrap_s) TEXTURE\_WRAP\_S: 10242 ### `Readonly`TEXTURE\_WRAP\_T[](#texture_wrap_t) TEXTURE\_WRAP\_T: 10243 ### `Readonly`TEXTURE0[](#texture0) TEXTURE0: 33984 ### `Readonly`TEXTURE1[](#texture1) TEXTURE1: 33985 ### `Readonly`TEXTURE10[](#texture10) TEXTURE10: 33994 ### `Readonly`TEXTURE11[](#texture11) TEXTURE11: 33995 ### `Readonly`TEXTURE12[](#texture12) TEXTURE12: 33996 ### `Readonly`TEXTURE13[](#texture13) TEXTURE13: 33997 ### `Readonly`TEXTURE14[](#texture14) TEXTURE14: 33998 ### `Readonly`TEXTURE15[](#texture15) TEXTURE15: 33999 ### `Readonly`TEXTURE16[](#texture16) TEXTURE16: 34000 ### `Readonly`TEXTURE17[](#texture17) TEXTURE17: 34001 ### `Readonly`TEXTURE18[](#texture18) TEXTURE18: 34002 ### `Readonly`TEXTURE19[](#texture19) TEXTURE19: 34003 ### `Readonly`TEXTURE2[](#texture2) TEXTURE2: 33986 ### `Readonly`TEXTURE20[](#texture20) TEXTURE20: 34004 ### `Readonly`TEXTURE21[](#texture21) TEXTURE21: 34005 ### `Readonly`TEXTURE22[](#texture22) TEXTURE22: 34006 ### `Readonly`TEXTURE23[](#texture23) TEXTURE23: 34007 ### `Readonly`TEXTURE24[](#texture24) TEXTURE24: 34008 ### `Readonly`TEXTURE25[](#texture25) TEXTURE25: 34009 ### `Readonly`TEXTURE26[](#texture26) TEXTURE26: 34010 ### `Readonly`TEXTURE27[](#texture27) TEXTURE27: 34011 ### `Readonly`TEXTURE28[](#texture28) TEXTURE28: 34012 ### `Readonly`TEXTURE29[](#texture29) TEXTURE29: 34013 ### `Readonly`TEXTURE3[](#texture3) TEXTURE3: 33987 ### `Readonly`TEXTURE30[](#texture30) TEXTURE30: 34014 ### `Readonly`TEXTURE31[](#texture31) TEXTURE31: 34015 ### `Readonly`TEXTURE4[](#texture4) TEXTURE4: 33988 ### `Readonly`TEXTURE5[](#texture5) TEXTURE5: 33989 ### `Readonly`TEXTURE6[](#texture6) TEXTURE6: 33990 ### `Readonly`TEXTURE7[](#texture7) TEXTURE7: 33991 ### `Readonly`TEXTURE8[](#texture8) TEXTURE8: 33992 ### `Readonly`TEXTURE9[](#texture9) TEXTURE9: 33993 ### `Readonly`TRIANGLE\_FAN[](#triangle_fan) TRIANGLE\_FAN: 6 ### `Readonly`TRIANGLE\_STRIP[](#triangle_strip) TRIANGLE\_STRIP: 5 ### `Readonly`TRIANGLES[](#triangles) TRIANGLES: 4 ### `Readonly`UNPACK\_ALIGNMENT[](#unpack_alignment) UNPACK\_ALIGNMENT: 3317 ### `Readonly`UNPACK\_COLORSPACE\_CONVERSION\_WEBGL[](#unpack_colorspace_conversion_webgl) UNPACK\_COLORSPACE\_CONVERSION\_WEBGL: 37443 ### `Readonly`UNPACK\_FLIP\_Y\_WEBGL[](#unpack_flip_y_webgl) UNPACK\_FLIP\_Y\_WEBGL: 37440 ### `Readonly`UNPACK\_PREMULTIPLY\_ALPHA\_WEBGL[](#unpack_premultiply_alpha_webgl) UNPACK\_PREMULTIPLY\_ALPHA\_WEBGL: 37441 ### unpackColorSpace[](#unpackcolorspace) unpackColorSpace: [PredefinedColorSpace](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.PredefinedColorSpace/) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGL2RenderingContext/unpackColorSpace) ### `Readonly`UNSIGNED\_BYTE[](#unsigned_byte) UNSIGNED\_BYTE: 5121 ### `Readonly`UNSIGNED\_INT[](#unsigned_int) UNSIGNED\_INT: 5125 ### `Readonly`UNSIGNED\_SHORT[](#unsigned_short) UNSIGNED\_SHORT: 5123 ### `Readonly`UNSIGNED\_SHORT\_4\_4\_4\_4[](#unsigned_short_4_4_4_4) UNSIGNED\_SHORT\_4\_4\_4\_4: 32819 ### `Readonly`UNSIGNED\_SHORT\_5\_5\_5\_1[](#unsigned_short_5_5_5_1) UNSIGNED\_SHORT\_5\_5\_5\_1: 32820 ### `Readonly`UNSIGNED\_SHORT\_5\_6\_5[](#unsigned_short_5_6_5) UNSIGNED\_SHORT\_5\_6\_5: 33635 ### `Readonly`VALIDATE\_STATUS[](#validate_status) VALIDATE\_STATUS: 35715 ### `Readonly`VENDOR[](#vendor) VENDOR: 7936 ### `Readonly`VERSION[](#version) VERSION: 7938 ### `Readonly`VERTEX\_ATTRIB\_ARRAY\_BUFFER\_BINDING[](#vertex_attrib_array_buffer_binding) VERTEX\_ATTRIB\_ARRAY\_BUFFER\_BINDING: 34975 ### `Readonly`VERTEX\_ATTRIB\_ARRAY\_ENABLED[](#vertex_attrib_array_enabled) VERTEX\_ATTRIB\_ARRAY\_ENABLED: 34338 ### `Readonly`VERTEX\_ATTRIB\_ARRAY\_NORMALIZED[](#vertex_attrib_array_normalized) VERTEX\_ATTRIB\_ARRAY\_NORMALIZED: 34922 ### `Readonly`VERTEX\_ATTRIB\_ARRAY\_POINTER[](#vertex_attrib_array_pointer) VERTEX\_ATTRIB\_ARRAY\_POINTER: 34373 ### `Readonly`VERTEX\_ATTRIB\_ARRAY\_SIZE[](#vertex_attrib_array_size) VERTEX\_ATTRIB\_ARRAY\_SIZE: 34339 ### `Readonly`VERTEX\_ATTRIB\_ARRAY\_STRIDE[](#vertex_attrib_array_stride) VERTEX\_ATTRIB\_ARRAY\_STRIDE: 34340 ### `Readonly`VERTEX\_ATTRIB\_ARRAY\_TYPE[](#vertex_attrib_array_type) VERTEX\_ATTRIB\_ARRAY\_TYPE: 34341 ### `Readonly`VERTEX\_SHADER[](#vertex_shader) VERTEX\_SHADER: 35633 ### `Readonly`VIEWPORT[](#viewport) VIEWPORT: 2978 ### `Readonly`ZERO[](#zero) ZERO: 0 ## Methods[](#methods-1) ### activeTexture[](#activetexture) - activeTexture(texture: number): void[](#activetexture-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/activeTexture) #### Parameters - texture: number #### Returns void ### attachShader[](#attachshader) - attachShader(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)): void[](#attachshader-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/attachShader) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) - shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) #### Returns void ### bindAttribLocation[](#bindattriblocation) - bindAttribLocation(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), index: number, name: string): void[](#bindattriblocation-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bindAttribLocation) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) - index: number - name: string #### Returns void ### bindBuffer[](#bindbuffer) - bindBuffer(target: number, buffer: [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/) | null): void[](#bindbuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bindBuffer) #### Parameters - target: number - buffer: [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/) | null #### Returns void ### bindFramebuffer[](#bindframebuffer) - bindFramebuffer(target: number, framebuffer: [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/) | null): void[](#bindframebuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bindFramebuffer) #### Parameters - target: number - framebuffer: [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/) | null #### Returns void ### bindRenderbuffer[](#bindrenderbuffer) - bindRenderbuffer(target: number, renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null): void[](#bindrenderbuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bindRenderbuffer) #### Parameters - target: number - renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null #### Returns void ### bindTexture[](#bindtexture) - bindTexture(target: number, texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null): void[](#bindtexture-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/bindTexture) #### Parameters - target: number - texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null #### Returns void ### blendColor[](#blendcolor) - blendColor(red: number, green: number, blue: number, alpha: number): void[](#blendcolor-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendColor) #### Parameters - red: number - green: number - blue: number - alpha: number #### Returns void ### blendEquation[](#blendequation) - blendEquation(mode: number): void[](#blendequation-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendEquation) #### Parameters - mode: number #### Returns void ### blendEquationSeparate[](#blendequationseparate) - blendEquationSeparate(modeRGB: number, modeAlpha: number): void[](#blendequationseparate-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendEquationSeparate) #### Parameters - modeRGB: number - modeAlpha: number #### Returns void ### blendFunc[](#blendfunc) - blendFunc(sfactor: number, dfactor: number): void[](#blendfunc-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendFunc) #### Parameters - sfactor: number - dfactor: number #### Returns void ### blendFuncSeparate[](#blendfuncseparate) - blendFuncSeparate(     srcRGB: number,     dstRGB: number,     srcAlpha: number,     dstAlpha: number, ): void[](#blendfuncseparate-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/blendFuncSeparate) #### Parameters - srcRGB: number - dstRGB: number - srcAlpha: number - dstAlpha: number #### Returns void ### checkFramebufferStatus[](#checkframebufferstatus) - checkFramebufferStatus(target: number): number[](#checkframebufferstatus-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/checkFramebufferStatus) #### Parameters - target: number #### Returns number ### clear[](#clear) - clear(mask: number): void[](#clear-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clear) #### Parameters - mask: number #### Returns void ### clearColor[](#clearcolor) - clearColor(red: number, green: number, blue: number, alpha: number): void[](#clearcolor-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clearColor) #### Parameters - red: number - green: number - blue: number - alpha: number #### Returns void ### clearDepth[](#cleardepth) - clearDepth(depth: number): void[](#cleardepth-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clearDepth) #### Parameters - depth: number #### Returns void ### clearStencil[](#clearstencil) - clearStencil(s: number): void[](#clearstencil-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/clearStencil) #### Parameters - s: number #### Returns void ### colorMask[](#colormask) - colorMask(red: boolean, green: boolean, blue: boolean, alpha: boolean): void[](#colormask-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/colorMask) #### Parameters - red: boolean - green: boolean - blue: boolean - alpha: boolean #### Returns void ### compileShader[](#compileshader) - compileShader(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)): void[](#compileshader-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/compileShader) #### Parameters - shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) #### Returns void ### copyTexImage2D[](#copyteximage2d) - copyTexImage2D(     target: number,     level: number,     internalformat: number,     x: number,     y: number,     width: number,     height: number,     border: number, ): void[](#copyteximage2d-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/copyTexImage2D) #### Parameters - target: number - level: number - internalformat: number - x: number - y: number - width: number - height: number - border: number #### Returns void ### copyTexSubImage2D[](#copytexsubimage2d) - copyTexSubImage2D(     target: number,     level: number,     xoffset: number,     yoffset: number,     x: number,     y: number,     width: number,     height: number, ): void[](#copytexsubimage2d-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/copyTexSubImage2D) #### Parameters - target: number - level: number - xoffset: number - yoffset: number - x: number - y: number - width: number - height: number #### Returns void ### createBuffer[](#createbuffer) - createBuffer(): [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/)[](#createbuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createBuffer) #### Returns [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/) ### createFramebuffer[](#createframebuffer) - createFramebuffer(): [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/)[](#createframebuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createFramebuffer) #### Returns [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/) ### createProgram[](#createprogram) - createProgram(): [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/)[](#createprogram-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createProgram) #### Returns [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) ### createRenderbuffer[](#createrenderbuffer) - createRenderbuffer(): [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/)[](#createrenderbuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createRenderbuffer) #### Returns [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) ### createShader[](#createshader) - createShader(type: number): [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) | null[](#createshader-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createShader) #### Parameters - type: number #### Returns [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) | null ### createTexture[](#createtexture) - createTexture(): [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/)[](#createtexture-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/createTexture) #### Returns [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) ### cullFace[](#cullface) - cullFace(mode: number): void[](#cullface-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/cullFace) #### Parameters - mode: number #### Returns void ### deleteBuffer[](#deletebuffer) - deleteBuffer(buffer: [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/) | null): void[](#deletebuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteBuffer) #### Parameters - buffer: [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/) | null #### Returns void ### deleteFramebuffer[](#deleteframebuffer) - deleteFramebuffer(framebuffer: [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/) | null): void[](#deleteframebuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteFramebuffer) #### Parameters - framebuffer: [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/) | null #### Returns void ### deleteProgram[](#deleteprogram) - deleteProgram(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) | null): void[](#deleteprogram-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteProgram) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) | null #### Returns void ### deleteRenderbuffer[](#deleterenderbuffer) - deleteRenderbuffer(renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null): void[](#deleterenderbuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteRenderbuffer) #### Parameters - renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null #### Returns void ### deleteShader[](#deleteshader) - deleteShader(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) | null): void[](#deleteshader-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteShader) #### Parameters - shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) | null #### Returns void ### deleteTexture[](#deletetexture) - deleteTexture(texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null): void[](#deletetexture-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/deleteTexture) #### Parameters - texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null #### Returns void ### depthFunc[](#depthfunc) - depthFunc(func: number): void[](#depthfunc-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/depthFunc) #### Parameters - func: number #### Returns void ### depthMask[](#depthmask) - depthMask(flag: boolean): void[](#depthmask-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/depthMask) #### Parameters - flag: boolean #### Returns void ### depthRange[](#depthrange) - depthRange(zNear: number, zFar: number): void[](#depthrange-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/depthRange) #### Parameters - zNear: number - zFar: number #### Returns void ### detachShader[](#detachshader) - detachShader(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)): void[](#detachshader-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/detachShader) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) - shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) #### Returns void ### disable[](#disable) - disable(cap: number): void[](#disable-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/disable) #### Parameters - cap: number #### Returns void ### disableVertexAttribArray[](#disablevertexattribarray) - disableVertexAttribArray(index: number): void[](#disablevertexattribarray-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/disableVertexAttribArray) #### Parameters - index: number #### Returns void ### drawArrays[](#drawarrays) - drawArrays(mode: number, first: number, count: number): void[](#drawarrays-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawArrays) #### Parameters - mode: number - first: number - count: number #### Returns void ### drawElements[](#drawelements) - drawElements(mode: number, count: number, type: number, offset: number): void[](#drawelements-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/drawElements) #### Parameters - mode: number - count: number - type: number - offset: number #### Returns void ### enable[](#enable) - enable(cap: number): void[](#enable-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/enable) #### Parameters - cap: number #### Returns void ### enableVertexAttribArray[](#enablevertexattribarray) - enableVertexAttribArray(index: number): void[](#enablevertexattribarray-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/enableVertexAttribArray) #### Parameters - index: number #### Returns void ### finish[](#finish) - finish(): void[](#finish-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/finish) #### Returns void ### flush[](#flush) - flush(): void[](#flush-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/flush) #### Returns void ### framebufferRenderbuffer[](#framebufferrenderbuffer) - framebufferRenderbuffer(     target: number,     attachment: number,     renderbuffertarget: number,     renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null, ): void[](#framebufferrenderbuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/framebufferRenderbuffer) #### Parameters - target: number - attachment: number - renderbuffertarget: number - renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null #### Returns void ### framebufferTexture2D[](#framebuffertexture2d) - framebufferTexture2D(     target: number,     attachment: number,     textarget: number,     texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null,     level: number, ): void[](#framebuffertexture2d-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/framebufferTexture2D) #### Parameters - target: number - attachment: number - textarget: number - texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null - level: number #### Returns void ### frontFace[](#frontface) - frontFace(mode: number): void[](#frontface-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/frontFace) #### Parameters - mode: number #### Returns void ### generateMipmap[](#generatemipmap) - generateMipmap(target: number): void[](#generatemipmap-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/generateMipmap) #### Parameters - target: number #### Returns void ### getActiveAttrib[](#getactiveattrib) - getActiveAttrib(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), index: number): [WebGLActiveInfo](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLActiveInfo/) | null[](#getactiveattrib-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getActiveAttrib) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) - index: number #### Returns [WebGLActiveInfo](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLActiveInfo/) | null ### getActiveUniform[](#getactiveuniform) - getActiveUniform(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), index: number): [WebGLActiveInfo](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLActiveInfo/) | null[](#getactiveuniform-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getActiveUniform) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) - index: number #### Returns [WebGLActiveInfo](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLActiveInfo/) | null ### getAttachedShaders[](#getattachedshaders) - getAttachedShaders(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/)): [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)\[\] | null[](#getattachedshaders-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getAttachedShaders) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) #### Returns [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)\[\] | null ### getAttribLocation[](#getattriblocation) - getAttribLocation(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), name: string): number[](#getattriblocation-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getAttribLocation) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) - name: string #### Returns number ### getBufferParameter[](#getbufferparameter) - getBufferParameter(target: number, pname: number): any[](#getbufferparameter-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getBufferParameter) #### Parameters - target: number - pname: number #### Returns any ### getContextAttributes[](#getcontextattributes) - getContextAttributes(): [WebGLContextAttributes](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLContextAttributes/) | null[](#getcontextattributes-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getContextAttributes) #### Returns [WebGLContextAttributes](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLContextAttributes/) | null ### getError[](#geterror) - getError(): number[](#geterror-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getError) #### Returns number ### getExtension[](#getextension) - getExtension(name: string): any[](#getextension-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getExtension) #### Parameters - name: string #### Returns any - getExtension(     extensionName: "ANGLE\_instanced\_arrays", ): [ANGLE\_instanced\_arrays](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.ANGLE_instanced_arrays/) | null[](#getextension-2) #### Parameters - extensionName: "ANGLE\_instanced\_arrays" #### Returns [ANGLE\_instanced\_arrays](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.ANGLE_instanced_arrays/) | null - getExtension(extensionName: "EXT\_blend\_minmax"): [EXT\_blend\_minmax](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_blend_minmax/) | null[](#getextension-3) #### Parameters - extensionName: "EXT\_blend\_minmax" #### Returns [EXT\_blend\_minmax](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_blend_minmax/) | null - getExtension(     extensionName: "EXT\_color\_buffer\_float", ): [EXT\_color\_buffer\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_color_buffer_float/) | null[](#getextension-4) #### Parameters - extensionName: "EXT\_color\_buffer\_float" #### Returns [EXT\_color\_buffer\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_color_buffer_float/) | null - getExtension(     extensionName: "EXT\_color\_buffer\_half\_float", ): [EXT\_color\_buffer\_half\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_color_buffer_half_float/) | null[](#getextension-5) #### Parameters - extensionName: "EXT\_color\_buffer\_half\_float" #### Returns [EXT\_color\_buffer\_half\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_color_buffer_half_float/) | null - getExtension(extensionName: "EXT\_float\_blend"): [EXT\_float\_blend](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_float_blend/) | null[](#getextension-6) #### Parameters - extensionName: "EXT\_float\_blend" #### Returns [EXT\_float\_blend](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_float_blend/) | null - getExtension(extensionName: "EXT\_frag\_depth"): [EXT\_frag\_depth](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_frag_depth/) | null[](#getextension-7) #### Parameters - extensionName: "EXT\_frag\_depth" #### Returns [EXT\_frag\_depth](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_frag_depth/) | null - getExtension(extensionName: "EXT\_sRGB"): [EXT\_sRGB](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_sRGB/) | null[](#getextension-8) #### Parameters - extensionName: "EXT\_sRGB" #### Returns [EXT\_sRGB](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_sRGB/) | null - getExtension(     extensionName: "EXT\_shader\_texture\_lod", ): [EXT\_shader\_texture\_lod](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_shader_texture_lod/) | null[](#getextension-9) #### Parameters - extensionName: "EXT\_shader\_texture\_lod" #### Returns [EXT\_shader\_texture\_lod](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_shader_texture_lod/) | null - getExtension(     extensionName: "EXT\_texture\_compression\_bptc", ): [EXT\_texture\_compression\_bptc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_texture_compression_bptc/) | null[](#getextension-10) #### Parameters - extensionName: "EXT\_texture\_compression\_bptc" #### Returns [EXT\_texture\_compression\_bptc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_texture_compression_bptc/) | null - getExtension(     extensionName: "EXT\_texture\_compression\_rgtc", ): [EXT\_texture\_compression\_rgtc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_texture_compression_rgtc/) | null[](#getextension-11) #### Parameters - extensionName: "EXT\_texture\_compression\_rgtc" #### Returns [EXT\_texture\_compression\_rgtc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_texture_compression_rgtc/) | null - getExtension(     extensionName: "EXT\_texture\_filter\_anisotropic", ): [EXT\_texture\_filter\_anisotropic](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_texture_filter_anisotropic/) | null[](#getextension-12) #### Parameters - extensionName: "EXT\_texture\_filter\_anisotropic" #### Returns [EXT\_texture\_filter\_anisotropic](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.EXT_texture_filter_anisotropic/) | null - getExtension(     extensionName: "KHR\_parallel\_shader\_compile", ): [KHR\_parallel\_shader\_compile](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.KHR_parallel_shader_compile/) | null[](#getextension-13) #### Parameters - extensionName: "KHR\_parallel\_shader\_compile" #### Returns [KHR\_parallel\_shader\_compile](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.KHR_parallel_shader_compile/) | null - getExtension(     extensionName: "OES\_element\_index\_uint", ): [OES\_element\_index\_uint](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_element_index_uint/) | null[](#getextension-14) #### Parameters - extensionName: "OES\_element\_index\_uint" #### Returns [OES\_element\_index\_uint](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_element_index_uint/) | null - getExtension(     extensionName: "OES\_fbo\_render\_mipmap", ): [OES\_fbo\_render\_mipmap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_fbo_render_mipmap/) | null[](#getextension-15) #### Parameters - extensionName: "OES\_fbo\_render\_mipmap" #### Returns [OES\_fbo\_render\_mipmap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_fbo_render_mipmap/) | null - getExtension(     extensionName: "OES\_standard\_derivatives", ): [OES\_standard\_derivatives](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_standard_derivatives/) | null[](#getextension-16) #### Parameters - extensionName: "OES\_standard\_derivatives" #### Returns [OES\_standard\_derivatives](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_standard_derivatives/) | null - getExtension(extensionName: "OES\_texture\_float"): [OES\_texture\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_float/) | null[](#getextension-17) #### Parameters - extensionName: "OES\_texture\_float" #### Returns [OES\_texture\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_float/) | null - getExtension(     extensionName: "OES\_texture\_float\_linear", ): [OES\_texture\_float\_linear](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_float_linear/) | null[](#getextension-18) #### Parameters - extensionName: "OES\_texture\_float\_linear" #### Returns [OES\_texture\_float\_linear](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_float_linear/) | null - getExtension(     extensionName: "OES\_texture\_half\_float", ): [OES\_texture\_half\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_half_float/) | null[](#getextension-19) #### Parameters - extensionName: "OES\_texture\_half\_float" #### Returns [OES\_texture\_half\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_half_float/) | null - getExtension(     extensionName: "OES\_texture\_half\_float\_linear", ): [OES\_texture\_half\_float\_linear](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_half_float_linear/) | null[](#getextension-20) #### Parameters - extensionName: "OES\_texture\_half\_float\_linear" #### Returns [OES\_texture\_half\_float\_linear](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_texture_half_float_linear/) | null - getExtension(     extensionName: "OES\_vertex\_array\_object", ): [OES\_vertex\_array\_object](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_vertex_array_object/) | null[](#getextension-21) #### Parameters - extensionName: "OES\_vertex\_array\_object" #### Returns [OES\_vertex\_array\_object](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OES_vertex_array_object/) | null - getExtension(extensionName: "OVR\_multiview2"): [OVR\_multiview2](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OVR_multiview2/) | null[](#getextension-22) #### Parameters - extensionName: "OVR\_multiview2" #### Returns [OVR\_multiview2](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.OVR_multiview2/) | null - getExtension(     extensionName: "WEBGL\_color\_buffer\_float", ): [WEBGL\_color\_buffer\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_color_buffer_float/) | null[](#getextension-23) #### Parameters - extensionName: "WEBGL\_color\_buffer\_float" #### Returns [WEBGL\_color\_buffer\_float](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_color_buffer_float/) | null - getExtension(     extensionName: "WEBGL\_compressed\_texture\_astc", ): [WEBGL\_compressed\_texture\_astc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_astc/) | null[](#getextension-24) #### Parameters - extensionName: "WEBGL\_compressed\_texture\_astc" #### Returns [WEBGL\_compressed\_texture\_astc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_astc/) | null - getExtension(     extensionName: "WEBGL\_compressed\_texture\_etc", ): [WEBGL\_compressed\_texture\_etc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_etc/) | null[](#getextension-25) #### Parameters - extensionName: "WEBGL\_compressed\_texture\_etc" #### Returns [WEBGL\_compressed\_texture\_etc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_etc/) | null - getExtension(     extensionName: "WEBGL\_compressed\_texture\_etc1", ): [WEBGL\_compressed\_texture\_etc1](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_etc1/) | null[](#getextension-26) #### Parameters - extensionName: "WEBGL\_compressed\_texture\_etc1" #### Returns [WEBGL\_compressed\_texture\_etc1](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_etc1/) | null - getExtension(     extensionName: "WEBGL\_compressed\_texture\_pvrtc", ): [WEBGL\_compressed\_texture\_pvrtc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_pvrtc/) | null[](#getextension-27) #### Parameters - extensionName: "WEBGL\_compressed\_texture\_pvrtc" #### Returns [WEBGL\_compressed\_texture\_pvrtc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_pvrtc/) | null - getExtension(     extensionName: "WEBGL\_compressed\_texture\_s3tc", ): [WEBGL\_compressed\_texture\_s3tc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_s3tc/) | null[](#getextension-28) #### Parameters - extensionName: "WEBGL\_compressed\_texture\_s3tc" #### Returns [WEBGL\_compressed\_texture\_s3tc](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_s3tc/) | null - getExtension(     extensionName: "WEBGL\_compressed\_texture\_s3tc\_srgb", ): [WEBGL\_compressed\_texture\_s3tc\_srgb](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_s3tc_srgb/) | null[](#getextension-29) #### Parameters - extensionName: "WEBGL\_compressed\_texture\_s3tc\_srgb" #### Returns [WEBGL\_compressed\_texture\_s3tc\_srgb](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_compressed_texture_s3tc_srgb/) | null - getExtension(     extensionName: "WEBGL\_debug\_renderer\_info", ): [WEBGL\_debug\_renderer\_info](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_debug_renderer_info/) | null[](#getextension-30) #### Parameters - extensionName: "WEBGL\_debug\_renderer\_info" #### Returns [WEBGL\_debug\_renderer\_info](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_debug_renderer_info/) | null - getExtension(extensionName: "WEBGL\_debug\_shaders"): [WEBGL\_debug\_shaders](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_debug_shaders/) | null[](#getextension-31) #### Parameters - extensionName: "WEBGL\_debug\_shaders" #### Returns [WEBGL\_debug\_shaders](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_debug_shaders/) | null - getExtension(extensionName: "WEBGL\_depth\_texture"): [WEBGL\_depth\_texture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_depth_texture/) | null[](#getextension-32) #### Parameters - extensionName: "WEBGL\_depth\_texture" #### Returns [WEBGL\_depth\_texture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_depth_texture/) | null - getExtension(extensionName: "WEBGL\_draw\_buffers"): [WEBGL\_draw\_buffers](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_draw_buffers/) | null[](#getextension-33) #### Parameters - extensionName: "WEBGL\_draw\_buffers" #### Returns [WEBGL\_draw\_buffers](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_draw_buffers/) | null - getExtension(extensionName: "WEBGL\_lose\_context"): [WEBGL\_lose\_context](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_lose_context/) | null[](#getextension-34) #### Parameters - extensionName: "WEBGL\_lose\_context" #### Returns [WEBGL\_lose\_context](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_lose_context/) | null - getExtension(extensionName: "WEBGL\_multi\_draw"): [WEBGL\_multi\_draw](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_multi_draw/) | null[](#getextension-35) #### Parameters - extensionName: "WEBGL\_multi\_draw" #### Returns [WEBGL\_multi\_draw](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WEBGL_multi_draw/) | null ### getFramebufferAttachmentParameter[](#getframebufferattachmentparameter) - getFramebufferAttachmentParameter(     target: number,     attachment: number,     pname: number, ): any[](#getframebufferattachmentparameter-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getFramebufferAttachmentParameter) #### Parameters - target: number - attachment: number - pname: number #### Returns any ### getParameter[](#getparameter) - getParameter(pname: number): any[](#getparameter-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getParameter) #### Parameters - pname: number #### Returns any ### getProgramInfoLog[](#getprograminfolog) - getProgramInfoLog(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/)): string | null[](#getprograminfolog-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getProgramInfoLog) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) #### Returns string | null ### getProgramParameter[](#getprogramparameter) - getProgramParameter(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), pname: number): any[](#getprogramparameter-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getProgramParameter) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) - pname: number #### Returns any ### getRenderbufferParameter[](#getrenderbufferparameter) - getRenderbufferParameter(target: number, pname: number): any[](#getrenderbufferparameter-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getRenderbufferParameter) #### Parameters - target: number - pname: number #### Returns any ### getShaderInfoLog[](#getshaderinfolog) - getShaderInfoLog(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)): string | null[](#getshaderinfolog-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getShaderInfoLog) #### Parameters - shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) #### Returns string | null ### getShaderParameter[](#getshaderparameter) - getShaderParameter(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/), pname: number): any[](#getshaderparameter-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getShaderParameter) #### Parameters - shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) - pname: number #### Returns any ### getShaderPrecisionFormat[](#getshaderprecisionformat) - getShaderPrecisionFormat(     shadertype: number,     precisiontype: number, ): [WebGLShaderPrecisionFormat](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShaderPrecisionFormat/) | null[](#getshaderprecisionformat-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getShaderPrecisionFormat) #### Parameters - shadertype: number - precisiontype: number #### Returns [WebGLShaderPrecisionFormat](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShaderPrecisionFormat/) | null ### getShaderSource[](#getshadersource) - getShaderSource(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/)): string | null[](#getshadersource-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getShaderSource) #### Parameters - shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) #### Returns string | null ### getSupportedExtensions[](#getsupportedextensions) - getSupportedExtensions(): string\[\] | null[](#getsupportedextensions-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getSupportedExtensions) #### Returns string\[\] | null ### getTexParameter[](#gettexparameter) - getTexParameter(target: number, pname: number): any[](#gettexparameter-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getTexParameter) #### Parameters - target: number - pname: number #### Returns any ### getUniform[](#getuniform) - getUniform(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/), location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/)): any[](#getuniform-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getUniform) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) - location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) #### Returns any ### getUniformLocation[](#getuniformlocation) - getUniformLocation(     program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/),     name: string, ): [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null[](#getuniformlocation-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getUniformLocation) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) - name: string #### Returns [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null ### getVertexAttrib[](#getvertexattrib) - getVertexAttrib(index: number, pname: number): any[](#getvertexattrib-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getVertexAttrib) #### Parameters - index: number - pname: number #### Returns any ### getVertexAttribOffset[](#getvertexattriboffset) - getVertexAttribOffset(index: number, pname: number): number[](#getvertexattriboffset-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/getVertexAttribOffset) #### Parameters - index: number - pname: number #### Returns number ### hint[](#hint) - hint(target: number, mode: number): void[](#hint-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/hint) #### Parameters - target: number - mode: number #### Returns void ### isBuffer[](#isbuffer) - isBuffer(buffer: [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/) | null): boolean[](#isbuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isBuffer) #### Parameters - buffer: [WebGLBuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLBuffer/) | null #### Returns boolean ### isContextLost[](#iscontextlost) - isContextLost(): boolean[](#iscontextlost-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isContextLost) #### Returns boolean ### isEnabled[](#isenabled) - isEnabled(cap: number): boolean[](#isenabled-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isEnabled) #### Parameters - cap: number #### Returns boolean ### isFramebuffer[](#isframebuffer) - isFramebuffer(framebuffer: [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/) | null): boolean[](#isframebuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isFramebuffer) #### Parameters - framebuffer: [WebGLFramebuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLFramebuffer/) | null #### Returns boolean ### isProgram[](#isprogram) - isProgram(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) | null): boolean[](#isprogram-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isProgram) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) | null #### Returns boolean ### isRenderbuffer[](#isrenderbuffer) - isRenderbuffer(renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null): boolean[](#isrenderbuffer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isRenderbuffer) #### Parameters - renderbuffer: [WebGLRenderbuffer](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderbuffer/) | null #### Returns boolean ### isShader[](#isshader) - isShader(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) | null): boolean[](#isshader-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isShader) #### Parameters - shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) | null #### Returns boolean ### isTexture[](#istexture) - isTexture(texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null): boolean[](#istexture-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/isTexture) #### Parameters - texture: [WebGLTexture](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLTexture/) | null #### Returns boolean ### lineWidth[](#linewidth) - lineWidth(width: number): void[](#linewidth-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/lineWidth) #### Parameters - width: number #### Returns void ### linkProgram[](#linkprogram) - linkProgram(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/)): void[](#linkprogram-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/linkProgram) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) #### Returns void ### pixelStorei[](#pixelstorei) - pixelStorei(pname: number, param: number | boolean): void[](#pixelstorei-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/pixelStorei) #### Parameters - pname: number - param: number | boolean #### Returns void ### polygonOffset[](#polygonoffset) - polygonOffset(factor: number, units: number): void[](#polygonoffset-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/polygonOffset) #### Parameters - factor: number - units: number #### Returns void ### renderbufferStorage[](#renderbufferstorage) - renderbufferStorage(     target: number,     internalformat: number,     width: number,     height: number, ): void[](#renderbufferstorage-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/renderbufferStorage) #### Parameters - target: number - internalformat: number - width: number - height: number #### Returns void ### sampleCoverage[](#samplecoverage) - sampleCoverage(value: number, invert: boolean): void[](#samplecoverage-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/sampleCoverage) #### Parameters - value: number - invert: boolean #### Returns void ### scissor[](#scissor) - scissor(x: number, y: number, width: number, height: number): void[](#scissor-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/scissor) #### Parameters - x: number - y: number - width: number - height: number #### Returns void ### shaderSource[](#shadersource) - shaderSource(shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/), source: string): void[](#shadersource-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/shaderSource) #### Parameters - shader: [WebGLShader](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLShader/) - source: string #### Returns void ### stencilFunc[](#stencilfunc) - stencilFunc(func: number, ref: number, mask: number): void[](#stencilfunc-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/stencilFunc) #### Parameters - func: number - ref: number - mask: number #### Returns void ### stencilFuncSeparate[](#stencilfuncseparate) - stencilFuncSeparate(face: number, func: number, ref: number, mask: number): void[](#stencilfuncseparate-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/stencilFuncSeparate) #### Parameters - face: number - func: number - ref: number - mask: number #### Returns void ### stencilMask[](#stencilmask) - stencilMask(mask: number): void[](#stencilmask-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/stencilMask) #### Parameters - mask: number #### Returns void ### stencilMaskSeparate[](#stencilmaskseparate) - stencilMaskSeparate(face: number, mask: number): void[](#stencilmaskseparate-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/stencilMaskSeparate) #### Parameters - face: number - mask: number #### Returns void ### stencilOp[](#stencilop) - stencilOp(fail: number, zfail: number, zpass: number): void[](#stencilop-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/stencilOp) #### Parameters - fail: number - zfail: number - zpass: number #### Returns void ### stencilOpSeparate[](#stencilopseparate) - stencilOpSeparate(     face: number,     fail: number,     zfail: number,     zpass: number, ): void[](#stencilopseparate-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/stencilOpSeparate) #### Parameters - face: number - fail: number - zfail: number - zpass: number #### Returns void ### texParameterf[](#texparameterf) - texParameterf(target: number, pname: number, param: number): void[](#texparameterf-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/texParameter) #### Parameters - target: number - pname: number - param: number #### Returns void ### texParameteri[](#texparameteri) - texParameteri(target: number, pname: number, param: number): void[](#texparameteri-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/texParameter) #### Parameters - target: number - pname: number - param: number #### Returns void ### uniform1f[](#uniform1f) - uniform1f(location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null, x: number): void[](#uniform1f-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniform) #### Parameters - location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null - x: number #### Returns void ### uniform1i[](#uniform1i) - uniform1i(location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null, x: number): void[](#uniform1i-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniform) #### Parameters - location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null - x: number #### Returns void ### uniform2f[](#uniform2f) - uniform2f(location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null, x: number, y: number): void[](#uniform2f-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniform) #### Parameters - location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null - x: number - y: number #### Returns void ### uniform2i[](#uniform2i) - uniform2i(location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null, x: number, y: number): void[](#uniform2i-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniform) #### Parameters - location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null - x: number - y: number #### Returns void ### uniform3f[](#uniform3f) - uniform3f(     location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null,     x: number,     y: number,     z: number, ): void[](#uniform3f-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniform) #### Parameters - location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null - x: number - y: number - z: number #### Returns void ### uniform3i[](#uniform3i) - uniform3i(     location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null,     x: number,     y: number,     z: number, ): void[](#uniform3i-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniform) #### Parameters - location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null - x: number - y: number - z: number #### Returns void ### uniform4f[](#uniform4f) - uniform4f(     location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null,     x: number,     y: number,     z: number,     w: number, ): void[](#uniform4f-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniform) #### Parameters - location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null - x: number - y: number - z: number - w: number #### Returns void ### uniform4i[](#uniform4i) - uniform4i(     location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null,     x: number,     y: number,     z: number,     w: number, ): void[](#uniform4i-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/uniform) #### Parameters - location: [WebGLUniformLocation](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLUniformLocation/) | null - x: number - y: number - z: number - w: number #### Returns void ### useProgram[](#useprogram) - useProgram(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) | null): void[](#useprogram-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/useProgram) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) | null #### Returns void ### validateProgram[](#validateprogram) - validateProgram(program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/)): void[](#validateprogram-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/validateProgram) #### Parameters - program: [WebGLProgram](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLProgram/) #### Returns void ### vertexAttrib1f[](#vertexattrib1f) - vertexAttrib1f(index: number, x: number): void[](#vertexattrib1f-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - x: number #### Returns void ### vertexAttrib1fv[](#vertexattrib1fv) - vertexAttrib1fv(index: number, values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/)): void[](#vertexattrib1fv-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/) #### Returns void - vertexAttrib1fv(index: number, values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/)): void[](#vertexattrib1fv-2) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/) #### Returns void ### vertexAttrib2f[](#vertexattrib2f) - vertexAttrib2f(index: number, x: number, y: number): void[](#vertexattrib2f-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - x: number - y: number #### Returns void ### vertexAttrib2fv[](#vertexattrib2fv) - vertexAttrib2fv(index: number, values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/)): void[](#vertexattrib2fv-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/) #### Returns void - vertexAttrib2fv(index: number, values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/)): void[](#vertexattrib2fv-2) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/) #### Returns void ### vertexAttrib3f[](#vertexattrib3f) - vertexAttrib3f(index: number, x: number, y: number, z: number): void[](#vertexattrib3f-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - x: number - y: number - z: number #### Returns void ### vertexAttrib3fv[](#vertexattrib3fv) - vertexAttrib3fv(index: number, values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/)): void[](#vertexattrib3fv-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/) #### Returns void - vertexAttrib3fv(index: number, values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/)): void[](#vertexattrib3fv-2) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/) #### Returns void ### vertexAttrib4f[](#vertexattrib4f) - vertexAttrib4f(index: number, x: number, y: number, z: number, w: number): void[](#vertexattrib4f-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - x: number - y: number - z: number - w: number #### Returns void ### vertexAttrib4fv[](#vertexattrib4fv) - vertexAttrib4fv(index: number, values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/)): void[](#vertexattrib4fv-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - values: [Float32List](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.Float32List/) #### Returns void - vertexAttrib4fv(index: number, values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/)): void[](#vertexattrib4fv-2) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttrib) #### Parameters - index: number - values: [Iterable](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.Iterable/) #### Returns void ### vertexAttribPointer[](#vertexattribpointer) - vertexAttribPointer(     index: number,     size: number,     type: number,     normalized: boolean,     stride: number,     offset: number, ): void[](#vertexattribpointer-1) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/vertexAttribPointer) #### Parameters - index: number - size: number - type: number - normalized: boolean - stride: number - offset: number #### Returns void ### viewport[](#viewport-1) - viewport(x: number, y: number, width: number, height: number): void[](#viewport-2) [MDN Reference](https://developer.mozilla.org/docs/Web/API/WebGLRenderingContext/viewport) #### Parameters - x: number - y: number - width: number - height: number #### Returns void