--- title: "WebGLRenderingContext | JavaScript maps SDK" description: "Documentation for MapTiler SDK" --- > For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL. # Variable WebGLRenderingContext WebGLRenderingContext: {     ACTIVE\_ATTRIBUTES: 35721;     ACTIVE\_TEXTURE: 34016;     ACTIVE\_UNIFORMS: 35718;     ALIASED\_LINE\_WIDTH\_RANGE: 33902;     ALIASED\_POINT\_SIZE\_RANGE: 33901;     ALPHA: 6406;     ALPHA\_BITS: 3413;     ALWAYS: 519;     ARRAY\_BUFFER: 34962;     ARRAY\_BUFFER\_BINDING: 34964;     ATTACHED\_SHADERS: 35717;     BACK: 1029;     BLEND: 3042;     BLEND\_COLOR: 32773;     BLEND\_DST\_ALPHA: 32970;     BLEND\_DST\_RGB: 32968;     BLEND\_EQUATION: 32777;     BLEND\_EQUATION\_ALPHA: 34877;     BLEND\_EQUATION\_RGB: 32777;     BLEND\_SRC\_ALPHA: 32971;     BLEND\_SRC\_RGB: 32969;     BLUE\_BITS: 3412;     BOOL: 35670;     BOOL\_VEC2: 35671;     BOOL\_VEC3: 35672;     BOOL\_VEC4: 35673;     BROWSER\_DEFAULT\_WEBGL: 37444;     BUFFER\_SIZE: 34660;     BUFFER\_USAGE: 34661;     BYTE: 5120;     CCW: 2305;     CLAMP\_TO\_EDGE: 33071;     COLOR\_ATTACHMENT0: 36064;     COLOR\_BUFFER\_BIT: 16384;     COLOR\_CLEAR\_VALUE: 3106;     COLOR\_WRITEMASK: 3107;     COMPILE\_STATUS: 35713;     COMPRESSED\_TEXTURE\_FORMATS: 34467;     CONSTANT\_ALPHA: 32771;     CONSTANT\_COLOR: 32769;     CONTEXT\_LOST\_WEBGL: 37442;     CULL\_FACE: 2884;     CULL\_FACE\_MODE: 2885;     CURRENT\_PROGRAM: 35725;     CURRENT\_VERTEX\_ATTRIB: 34342;     CW: 2304;     DECR: 7683;     DECR\_WRAP: 34056;     DELETE\_STATUS: 35712;     DEPTH\_ATTACHMENT: 36096;     DEPTH\_BITS: 3414;     DEPTH\_BUFFER\_BIT: 256;     DEPTH\_CLEAR\_VALUE: 2931;     DEPTH\_COMPONENT: 6402;     DEPTH\_COMPONENT16: 33189;     DEPTH\_FUNC: 2932;     DEPTH\_RANGE: 2928;     DEPTH\_STENCIL: 34041;     DEPTH\_STENCIL\_ATTACHMENT: 33306;     DEPTH\_TEST: 2929;     DEPTH\_WRITEMASK: 2930;     DITHER: 3024;     DONT\_CARE: 4352;     DST\_ALPHA: 772;     DST\_COLOR: 774;     DYNAMIC\_DRAW: 35048;     ELEMENT\_ARRAY\_BUFFER: 34963;     ELEMENT\_ARRAY\_BUFFER\_BINDING: 34965;     EQUAL: 514;     FASTEST: 4353;     FLOAT: 5126;     FLOAT\_MAT2: 35674;     FLOAT\_MAT3: 35675;     FLOAT\_MAT4: 35676;     FLOAT\_VEC2: 35664;     FLOAT\_VEC3: 35665;     FLOAT\_VEC4: 35666;     FRAGMENT\_SHADER: 35632;     FRAMEBUFFER: 36160;     FRAMEBUFFER\_ATTACHMENT\_OBJECT\_NAME: 36049;     FRAMEBUFFER\_ATTACHMENT\_OBJECT\_TYPE: 36048;     FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_CUBE\_MAP\_FACE: 36051;     FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_LEVEL: 36050;     FRAMEBUFFER\_BINDING: 36006;     FRAMEBUFFER\_COMPLETE: 36053;     FRAMEBUFFER\_INCOMPLETE\_ATTACHMENT: 36054;     FRAMEBUFFER\_INCOMPLETE\_DIMENSIONS: 36057;     FRAMEBUFFER\_INCOMPLETE\_MISSING\_ATTACHMENT: 36055;     FRAMEBUFFER\_UNSUPPORTED: 36061;     FRONT: 1028;     FRONT\_AND\_BACK: 1032;     FRONT\_FACE: 2886;     FUNC\_ADD: 32774;     FUNC\_REVERSE\_SUBTRACT: 32779;     FUNC\_SUBTRACT: 32778;     GENERATE\_MIPMAP\_HINT: 33170;     GEQUAL: 518;     GREATER: 516;     GREEN\_BITS: 3411;     HIGH\_FLOAT: 36338;     HIGH\_INT: 36341;     IMPLEMENTATION\_COLOR\_READ\_FORMAT: 35739;     IMPLEMENTATION\_COLOR\_READ\_TYPE: 35738;     INCR: 7682;     INCR\_WRAP: 34055;     INT: 5124;     INT\_VEC2: 35667;     INT\_VEC3: 35668;     INT\_VEC4: 35669;     INVALID\_ENUM: 1280;     INVALID\_FRAMEBUFFER\_OPERATION: 1286;     INVALID\_OPERATION: 1282;     INVALID\_VALUE: 1281;     INVERT: 5386;     KEEP: 7680;     LEQUAL: 515;     LESS: 513;     LINE\_LOOP: 2;     LINE\_STRIP: 3;     LINE\_WIDTH: 2849;     LINEAR: 9729;     LINEAR\_MIPMAP\_LINEAR: 9987;     LINEAR\_MIPMAP\_NEAREST: 9985;     LINES: 1;     LINK\_STATUS: 35714;     LOW\_FLOAT: 36336;     LOW\_INT: 36339;     LUMINANCE: 6409;     LUMINANCE\_ALPHA: 6410;     MAX\_COMBINED\_TEXTURE\_IMAGE\_UNITS: 35661;     MAX\_CUBE\_MAP\_TEXTURE\_SIZE: 34076;     MAX\_FRAGMENT\_UNIFORM\_VECTORS: 36349;     MAX\_RENDERBUFFER\_SIZE: 34024;     MAX\_TEXTURE\_IMAGE\_UNITS: 34930;     MAX\_TEXTURE\_SIZE: 3379;     MAX\_VARYING\_VECTORS: 36348;     MAX\_VERTEX\_ATTRIBS: 34921;     MAX\_VERTEX\_TEXTURE\_IMAGE\_UNITS: 35660;     MAX\_VERTEX\_UNIFORM\_VECTORS: 36347;     MAX\_VIEWPORT\_DIMS: 3386;     MEDIUM\_FLOAT: 36337;     MEDIUM\_INT: 36340;     MIRRORED\_REPEAT: 33648;     NEAREST: 9728;     NEAREST\_MIPMAP\_LINEAR: 9986;     NEAREST\_MIPMAP\_NEAREST: 9984;     NEVER: 512;     NICEST: 4354;     NO\_ERROR: 0;     NONE: 0;     NOTEQUAL: 517;     ONE: 1;     ONE\_MINUS\_CONSTANT\_ALPHA: 32772;     ONE\_MINUS\_CONSTANT\_COLOR: 32770;     ONE\_MINUS\_DST\_ALPHA: 773;     ONE\_MINUS\_DST\_COLOR: 775;     ONE\_MINUS\_SRC\_ALPHA: 771;     ONE\_MINUS\_SRC\_COLOR: 769;     OUT\_OF\_MEMORY: 1285;     PACK\_ALIGNMENT: 3333;     POINTS: 0;     POLYGON\_OFFSET\_FACTOR: 32824;     POLYGON\_OFFSET\_FILL: 32823;     POLYGON\_OFFSET\_UNITS: 10752;     prototype: [WebGLRenderingContext](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContext/);     RED\_BITS: 3410;     RENDERBUFFER: 36161;     RENDERBUFFER\_ALPHA\_SIZE: 36179;     RENDERBUFFER\_BINDING: 36007;     RENDERBUFFER\_BLUE\_SIZE: 36178;     RENDERBUFFER\_DEPTH\_SIZE: 36180;     RENDERBUFFER\_GREEN\_SIZE: 36177;     RENDERBUFFER\_HEIGHT: 36163;     RENDERBUFFER\_INTERNAL\_FORMAT: 36164;     RENDERBUFFER\_RED\_SIZE: 36176;     RENDERBUFFER\_STENCIL\_SIZE: 36181;     RENDERBUFFER\_WIDTH: 36162;     RENDERER: 7937;     REPEAT: 10497;     REPLACE: 7681;     RGB: 6407;     RGB5\_A1: 32855;     RGB565: 36194;     RGBA: 6408;     RGBA4: 32854;     RGBA8: 32856;     SAMPLE\_ALPHA\_TO\_COVERAGE: 32926;     SAMPLE\_BUFFERS: 32936;     SAMPLE\_COVERAGE: 32928;     SAMPLE\_COVERAGE\_INVERT: 32939;     SAMPLE\_COVERAGE\_VALUE: 32938;     SAMPLER\_2D: 35678;     SAMPLER\_CUBE: 35680;     SAMPLES: 32937;     SCISSOR\_BOX: 3088;     SCISSOR\_TEST: 3089;     SHADER\_TYPE: 35663;     SHADING\_LANGUAGE\_VERSION: 35724;     SHORT: 5122;     SRC\_ALPHA: 770;     SRC\_ALPHA\_SATURATE: 776;     SRC\_COLOR: 768;     STATIC\_DRAW: 35044;     STENCIL\_ATTACHMENT: 36128;     STENCIL\_BACK\_FAIL: 34817;     STENCIL\_BACK\_FUNC: 34816;     STENCIL\_BACK\_PASS\_DEPTH\_FAIL: 34818;     STENCIL\_BACK\_PASS\_DEPTH\_PASS: 34819;     STENCIL\_BACK\_REF: 36003;     STENCIL\_BACK\_VALUE\_MASK: 36004;     STENCIL\_BACK\_WRITEMASK: 36005;     STENCIL\_BITS: 3415;     STENCIL\_BUFFER\_BIT: 1024;     STENCIL\_CLEAR\_VALUE: 2961;     STENCIL\_FAIL: 2964;     STENCIL\_FUNC: 2962;     STENCIL\_INDEX8: 36168;     STENCIL\_PASS\_DEPTH\_FAIL: 2965;     STENCIL\_PASS\_DEPTH\_PASS: 2966;     STENCIL\_REF: 2967;     STENCIL\_TEST: 2960;     STENCIL\_VALUE\_MASK: 2963;     STENCIL\_WRITEMASK: 2968;     STREAM\_DRAW: 35040;     SUBPIXEL\_BITS: 3408;     TEXTURE: 5890;     TEXTURE\_2D: 3553;     TEXTURE\_BINDING\_2D: 32873;     TEXTURE\_BINDING\_CUBE\_MAP: 34068;     TEXTURE\_CUBE\_MAP: 34067;     TEXTURE\_CUBE\_MAP\_NEGATIVE\_X: 34070;     TEXTURE\_CUBE\_MAP\_NEGATIVE\_Y: 34072;     TEXTURE\_CUBE\_MAP\_NEGATIVE\_Z: 34074;     TEXTURE\_CUBE\_MAP\_POSITIVE\_X: 34069;     TEXTURE\_CUBE\_MAP\_POSITIVE\_Y: 34071;     TEXTURE\_CUBE\_MAP\_POSITIVE\_Z: 34073;     TEXTURE\_MAG\_FILTER: 10240;     TEXTURE\_MIN\_FILTER: 10241;     TEXTURE\_WRAP\_S: 10242;     TEXTURE\_WRAP\_T: 10243;     TEXTURE0: 33984;     TEXTURE1: 33985;     TEXTURE10: 33994;     TEXTURE11: 33995;     TEXTURE12: 33996;     TEXTURE13: 33997;     TEXTURE14: 33998;     TEXTURE15: 33999;     TEXTURE16: 34000;     TEXTURE17: 34001;     TEXTURE18: 34002;     TEXTURE19: 34003;     TEXTURE2: 33986;     TEXTURE20: 34004;     TEXTURE21: 34005;     TEXTURE22: 34006;     TEXTURE23: 34007;     TEXTURE24: 34008;     TEXTURE25: 34009;     TEXTURE26: 34010;     TEXTURE27: 34011;     TEXTURE28: 34012;     TEXTURE29: 34013;     TEXTURE3: 33987;     TEXTURE30: 34014;     TEXTURE31: 34015;     TEXTURE4: 33988;     TEXTURE5: 33989;     TEXTURE6: 33990;     TEXTURE7: 33991;     TEXTURE8: 33992;     TEXTURE9: 33993;     TRIANGLE\_FAN: 6;     TRIANGLE\_STRIP: 5;     TRIANGLES: 4;     UNPACK\_ALIGNMENT: 3317;     UNPACK\_COLORSPACE\_CONVERSION\_WEBGL: 37443;     UNPACK\_FLIP\_Y\_WEBGL: 37440;     UNPACK\_PREMULTIPLY\_ALPHA\_WEBGL: 37441;     UNSIGNED\_BYTE: 5121;     UNSIGNED\_INT: 5125;     UNSIGNED\_SHORT: 5123;     UNSIGNED\_SHORT\_4\_4\_4\_4: 32819;     UNSIGNED\_SHORT\_5\_5\_5\_1: 32820;     UNSIGNED\_SHORT\_5\_6\_5: 33635;     VALIDATE\_STATUS: 35715;     VENDOR: 7936;     VERSION: 7938;     VERTEX\_ATTRIB\_ARRAY\_BUFFER\_BINDING: 34975;     VERTEX\_ATTRIB\_ARRAY\_ENABLED: 34338;     VERTEX\_ATTRIB\_ARRAY\_NORMALIZED: 34922;     VERTEX\_ATTRIB\_ARRAY\_POINTER: 34373;     VERTEX\_ATTRIB\_ARRAY\_SIZE: 34339;     VERTEX\_ATTRIB\_ARRAY\_STRIDE: 34340;     VERTEX\_ATTRIB\_ARRAY\_TYPE: 34341;     VERTEX\_SHADER: 35633;     VIEWPORT: 2978;     ZERO: 0;     new (): [WebGLRenderingContext](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContext/); } #### Type Declaration - - new (): [WebGLRenderingContext](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContext/) - #### Returns [WebGLRenderingContext](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContext/) - ##### `Readonly`ACTIVE\_ATTRIBUTES: 35721 - ##### `Readonly`ACTIVE\_TEXTURE: 34016 - ##### `Readonly`ACTIVE\_UNIFORMS: 35718 - ##### `Readonly`ALIASED\_LINE\_WIDTH\_RANGE: 33902 - ##### `Readonly`ALIASED\_POINT\_SIZE\_RANGE: 33901 - ##### `Readonly`ALPHA: 6406 - ##### `Readonly`ALPHA\_BITS: 3413 - ##### `Readonly`ALWAYS: 519 - ##### `Readonly`ARRAY\_BUFFER: 34962 - ##### `Readonly`ARRAY\_BUFFER\_BINDING: 34964 - ##### `Readonly`ATTACHED\_SHADERS: 35717 - ##### `Readonly`BACK: 1029 - ##### `Readonly`BLEND: 3042 - ##### `Readonly`BLEND\_COLOR: 32773 - ##### `Readonly`BLEND\_DST\_ALPHA: 32970 - ##### `Readonly`BLEND\_DST\_RGB: 32968 - ##### `Readonly`BLEND\_EQUATION: 32777 - ##### `Readonly`BLEND\_EQUATION\_ALPHA: 34877 - ##### `Readonly`BLEND\_EQUATION\_RGB: 32777 - ##### `Readonly`BLEND\_SRC\_ALPHA: 32971 - ##### `Readonly`BLEND\_SRC\_RGB: 32969 - ##### `Readonly`BLUE\_BITS: 3412 - ##### `Readonly`BOOL: 35670 - ##### `Readonly`BOOL\_VEC2: 35671 - ##### `Readonly`BOOL\_VEC3: 35672 - ##### `Readonly`BOOL\_VEC4: 35673 - ##### `Readonly`BROWSER\_DEFAULT\_WEBGL: 37444 - ##### `Readonly`BUFFER\_SIZE: 34660 - ##### `Readonly`BUFFER\_USAGE: 34661 - ##### `Readonly`BYTE: 5120 - ##### `Readonly`CCW: 2305 - ##### `Readonly`CLAMP\_TO\_EDGE: 33071 - ##### `Readonly`COLOR\_ATTACHMENT0: 36064 - ##### `Readonly`COLOR\_BUFFER\_BIT: 16384 - ##### `Readonly`COLOR\_CLEAR\_VALUE: 3106 - ##### `Readonly`COLOR\_WRITEMASK: 3107 - ##### `Readonly`COMPILE\_STATUS: 35713 - ##### `Readonly`COMPRESSED\_TEXTURE\_FORMATS: 34467 - ##### `Readonly`CONSTANT\_ALPHA: 32771 - ##### `Readonly`CONSTANT\_COLOR: 32769 - ##### `Readonly`CONTEXT\_LOST\_WEBGL: 37442 - ##### `Readonly`CULL\_FACE: 2884 - ##### `Readonly`CULL\_FACE\_MODE: 2885 - ##### `Readonly`CURRENT\_PROGRAM: 35725 - ##### `Readonly`CURRENT\_VERTEX\_ATTRIB: 34342 - ##### `Readonly`CW: 2304 - ##### `Readonly`DECR: 7683 - ##### `Readonly`DECR\_WRAP: 34056 - ##### `Readonly`DELETE\_STATUS: 35712 - ##### `Readonly`DEPTH\_ATTACHMENT: 36096 - ##### `Readonly`DEPTH\_BITS: 3414 - ##### `Readonly`DEPTH\_BUFFER\_BIT: 256 - ##### `Readonly`DEPTH\_CLEAR\_VALUE: 2931 - ##### `Readonly`DEPTH\_COMPONENT: 6402 - ##### `Readonly`DEPTH\_COMPONENT16: 33189 - ##### `Readonly`DEPTH\_FUNC: 2932 - ##### `Readonly`DEPTH\_RANGE: 2928 - ##### `Readonly`DEPTH\_STENCIL: 34041 - ##### `Readonly`DEPTH\_STENCIL\_ATTACHMENT: 33306 - ##### `Readonly`DEPTH\_TEST: 2929 - ##### `Readonly`DEPTH\_WRITEMASK: 2930 - ##### `Readonly`DITHER: 3024 - ##### `Readonly`DONT\_CARE: 4352 - ##### `Readonly`DST\_ALPHA: 772 - ##### `Readonly`DST\_COLOR: 774 - ##### `Readonly`DYNAMIC\_DRAW: 35048 - ##### `Readonly`ELEMENT\_ARRAY\_BUFFER: 34963 - ##### `Readonly`ELEMENT\_ARRAY\_BUFFER\_BINDING: 34965 - ##### `Readonly`EQUAL: 514 - ##### `Readonly`FASTEST: 4353 - ##### `Readonly`FLOAT: 5126 - ##### `Readonly`FLOAT\_MAT2: 35674 - ##### `Readonly`FLOAT\_MAT3: 35675 - ##### `Readonly`FLOAT\_MAT4: 35676 - ##### `Readonly`FLOAT\_VEC2: 35664 - ##### `Readonly`FLOAT\_VEC3: 35665 - ##### `Readonly`FLOAT\_VEC4: 35666 - ##### `Readonly`FRAGMENT\_SHADER: 35632 - ##### `Readonly`FRAMEBUFFER: 36160 - ##### `Readonly`FRAMEBUFFER\_ATTACHMENT\_OBJECT\_NAME: 36049 - ##### `Readonly`FRAMEBUFFER\_ATTACHMENT\_OBJECT\_TYPE: 36048 - ##### `Readonly`FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_CUBE\_MAP\_FACE: 36051 - ##### `Readonly`FRAMEBUFFER\_ATTACHMENT\_TEXTURE\_LEVEL: 36050 - ##### `Readonly`FRAMEBUFFER\_BINDING: 36006 - ##### `Readonly`FRAMEBUFFER\_COMPLETE: 36053 - ##### `Readonly`FRAMEBUFFER\_INCOMPLETE\_ATTACHMENT: 36054 - ##### `Readonly`FRAMEBUFFER\_INCOMPLETE\_DIMENSIONS: 36057 - ##### `Readonly`FRAMEBUFFER\_INCOMPLETE\_MISSING\_ATTACHMENT: 36055 - ##### `Readonly`FRAMEBUFFER\_UNSUPPORTED: 36061 - ##### `Readonly`FRONT: 1028 - ##### `Readonly`FRONT\_AND\_BACK: 1032 - ##### `Readonly`FRONT\_FACE: 2886 - ##### `Readonly`FUNC\_ADD: 32774 - ##### `Readonly`FUNC\_REVERSE\_SUBTRACT: 32779 - ##### `Readonly`FUNC\_SUBTRACT: 32778 - ##### `Readonly`GENERATE\_MIPMAP\_HINT: 33170 - ##### `Readonly`GEQUAL: 518 - ##### `Readonly`GREATER: 516 - ##### `Readonly`GREEN\_BITS: 3411 - ##### `Readonly`HIGH\_FLOAT: 36338 - ##### `Readonly`HIGH\_INT: 36341 - ##### `Readonly`IMPLEMENTATION\_COLOR\_READ\_FORMAT: 35739 - ##### `Readonly`IMPLEMENTATION\_COLOR\_READ\_TYPE: 35738 - ##### `Readonly`INCR: 7682 - ##### `Readonly`INCR\_WRAP: 34055 - ##### `Readonly`INT: 5124 - ##### `Readonly`INT\_VEC2: 35667 - ##### `Readonly`INT\_VEC3: 35668 - ##### `Readonly`INT\_VEC4: 35669 - ##### `Readonly`INVALID\_ENUM: 1280 - ##### `Readonly`INVALID\_FRAMEBUFFER\_OPERATION: 1286 - ##### `Readonly`INVALID\_OPERATION: 1282 - ##### `Readonly`INVALID\_VALUE: 1281 - ##### `Readonly`INVERT: 5386 - ##### `Readonly`KEEP: 7680 - ##### `Readonly`LEQUAL: 515 - ##### `Readonly`LESS: 513 - ##### `Readonly`LINE\_LOOP: 2 - ##### `Readonly`LINE\_STRIP: 3 - ##### `Readonly`LINE\_WIDTH: 2849 - ##### `Readonly`LINEAR: 9729 - ##### `Readonly`LINEAR\_MIPMAP\_LINEAR: 9987 - ##### `Readonly`LINEAR\_MIPMAP\_NEAREST: 9985 - ##### `Readonly`LINES: 1 - ##### `Readonly`LINK\_STATUS: 35714 - ##### `Readonly`LOW\_FLOAT: 36336 - ##### `Readonly`LOW\_INT: 36339 - ##### `Readonly`LUMINANCE: 6409 - ##### `Readonly`LUMINANCE\_ALPHA: 6410 - ##### `Readonly`MAX\_COMBINED\_TEXTURE\_IMAGE\_UNITS: 35661 - ##### `Readonly`MAX\_CUBE\_MAP\_TEXTURE\_SIZE: 34076 - ##### `Readonly`MAX\_FRAGMENT\_UNIFORM\_VECTORS: 36349 - ##### `Readonly`MAX\_RENDERBUFFER\_SIZE: 34024 - ##### `Readonly`MAX\_TEXTURE\_IMAGE\_UNITS: 34930 - ##### `Readonly`MAX\_TEXTURE\_SIZE: 3379 - ##### `Readonly`MAX\_VARYING\_VECTORS: 36348 - ##### `Readonly`MAX\_VERTEX\_ATTRIBS: 34921 - ##### `Readonly`MAX\_VERTEX\_TEXTURE\_IMAGE\_UNITS: 35660 - ##### `Readonly`MAX\_VERTEX\_UNIFORM\_VECTORS: 36347 - ##### `Readonly`MAX\_VIEWPORT\_DIMS: 3386 - ##### `Readonly`MEDIUM\_FLOAT: 36337 - ##### `Readonly`MEDIUM\_INT: 36340 - ##### `Readonly`MIRRORED\_REPEAT: 33648 - ##### `Readonly`NEAREST: 9728 - ##### `Readonly`NEAREST\_MIPMAP\_LINEAR: 9986 - ##### `Readonly`NEAREST\_MIPMAP\_NEAREST: 9984 - ##### `Readonly`NEVER: 512 - ##### `Readonly`NICEST: 4354 - ##### `Readonly`NO\_ERROR: 0 - ##### `Readonly`NONE: 0 - ##### `Readonly`NOTEQUAL: 517 - ##### `Readonly`ONE: 1 - ##### `Readonly`ONE\_MINUS\_CONSTANT\_ALPHA: 32772 - ##### `Readonly`ONE\_MINUS\_CONSTANT\_COLOR: 32770 - ##### `Readonly`ONE\_MINUS\_DST\_ALPHA: 773 - ##### `Readonly`ONE\_MINUS\_DST\_COLOR: 775 - ##### `Readonly`ONE\_MINUS\_SRC\_ALPHA: 771 - ##### `Readonly`ONE\_MINUS\_SRC\_COLOR: 769 - ##### `Readonly`OUT\_OF\_MEMORY: 1285 - ##### `Readonly`PACK\_ALIGNMENT: 3333 - ##### `Readonly`POINTS: 0 - ##### `Readonly`POLYGON\_OFFSET\_FACTOR: 32824 - ##### `Readonly`POLYGON\_OFFSET\_FILL: 32823 - ##### `Readonly`POLYGON\_OFFSET\_UNITS: 10752 - ##### prototype: [WebGLRenderingContext](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContext/) - ##### `Readonly`RED\_BITS: 3410 - ##### `Readonly`RENDERBUFFER: 36161 - ##### `Readonly`RENDERBUFFER\_ALPHA\_SIZE: 36179 - ##### `Readonly`RENDERBUFFER\_BINDING: 36007 - ##### `Readonly`RENDERBUFFER\_BLUE\_SIZE: 36178 - ##### `Readonly`RENDERBUFFER\_DEPTH\_SIZE: 36180 - ##### `Readonly`RENDERBUFFER\_GREEN\_SIZE: 36177 - ##### `Readonly`RENDERBUFFER\_HEIGHT: 36163 - ##### `Readonly`RENDERBUFFER\_INTERNAL\_FORMAT: 36164 - ##### `Readonly`RENDERBUFFER\_RED\_SIZE: 36176 - ##### `Readonly`RENDERBUFFER\_STENCIL\_SIZE: 36181 - ##### `Readonly`RENDERBUFFER\_WIDTH: 36162 - ##### `Readonly`RENDERER: 7937 - ##### `Readonly`REPEAT: 10497 - ##### `Readonly`REPLACE: 7681 - ##### `Readonly`RGB: 6407 - ##### `Readonly`RGB5\_A1: 32855 - ##### `Readonly`RGB565: 36194 - ##### `Readonly`RGBA: 6408 - ##### `Readonly`RGBA4: 32854 - ##### `Readonly`RGBA8: 32856 - ##### `Readonly`SAMPLE\_ALPHA\_TO\_COVERAGE: 32926 - ##### `Readonly`SAMPLE\_BUFFERS: 32936 - ##### `Readonly`SAMPLE\_COVERAGE: 32928 - ##### `Readonly`SAMPLE\_COVERAGE\_INVERT: 32939 - ##### `Readonly`SAMPLE\_COVERAGE\_VALUE: 32938 - ##### `Readonly`SAMPLER\_2D: 35678 - ##### `Readonly`SAMPLER\_CUBE: 35680 - ##### `Readonly`SAMPLES: 32937 - ##### `Readonly`SCISSOR\_BOX: 3088 - ##### `Readonly`SCISSOR\_TEST: 3089 - ##### `Readonly`SHADER\_TYPE: 35663 - ##### `Readonly`SHADING\_LANGUAGE\_VERSION: 35724 - ##### `Readonly`SHORT: 5122 - ##### `Readonly`SRC\_ALPHA: 770 - ##### `Readonly`SRC\_ALPHA\_SATURATE: 776 - ##### `Readonly`SRC\_COLOR: 768 - ##### `Readonly`STATIC\_DRAW: 35044 - ##### `Readonly`STENCIL\_ATTACHMENT: 36128 - ##### `Readonly`STENCIL\_BACK\_FAIL: 34817 - ##### `Readonly`STENCIL\_BACK\_FUNC: 34816 - ##### `Readonly`STENCIL\_BACK\_PASS\_DEPTH\_FAIL: 34818 - ##### `Readonly`STENCIL\_BACK\_PASS\_DEPTH\_PASS: 34819 - ##### `Readonly`STENCIL\_BACK\_REF: 36003 - ##### `Readonly`STENCIL\_BACK\_VALUE\_MASK: 36004 - ##### `Readonly`STENCIL\_BACK\_WRITEMASK: 36005 - ##### `Readonly`STENCIL\_BITS: 3415 - ##### `Readonly`STENCIL\_BUFFER\_BIT: 1024 - ##### `Readonly`STENCIL\_CLEAR\_VALUE: 2961 - ##### `Readonly`STENCIL\_FAIL: 2964 - ##### `Readonly`STENCIL\_FUNC: 2962 - ##### `Readonly`STENCIL\_INDEX8: 36168 - ##### `Readonly`STENCIL\_PASS\_DEPTH\_FAIL: 2965 - ##### `Readonly`STENCIL\_PASS\_DEPTH\_PASS: 2966 - ##### `Readonly`STENCIL\_REF: 2967 - ##### `Readonly`STENCIL\_TEST: 2960 - ##### `Readonly`STENCIL\_VALUE\_MASK: 2963 - ##### `Readonly`STENCIL\_WRITEMASK: 2968 - ##### `Readonly`STREAM\_DRAW: 35040 - ##### `Readonly`SUBPIXEL\_BITS: 3408 - ##### `Readonly`TEXTURE: 5890 - ##### `Readonly`TEXTURE\_2D: 3553 - ##### `Readonly`TEXTURE\_BINDING\_2D: 32873 - ##### `Readonly`TEXTURE\_BINDING\_CUBE\_MAP: 34068 - ##### `Readonly`TEXTURE\_CUBE\_MAP: 34067 - ##### `Readonly`TEXTURE\_CUBE\_MAP\_NEGATIVE\_X: 34070 - ##### `Readonly`TEXTURE\_CUBE\_MAP\_NEGATIVE\_Y: 34072 - ##### `Readonly`TEXTURE\_CUBE\_MAP\_NEGATIVE\_Z: 34074 - ##### `Readonly`TEXTURE\_CUBE\_MAP\_POSITIVE\_X: 34069 - ##### `Readonly`TEXTURE\_CUBE\_MAP\_POSITIVE\_Y: 34071 - ##### `Readonly`TEXTURE\_CUBE\_MAP\_POSITIVE\_Z: 34073 - ##### `Readonly`TEXTURE\_MAG\_FILTER: 10240 - ##### `Readonly`TEXTURE\_MIN\_FILTER: 10241 - ##### `Readonly`TEXTURE\_WRAP\_S: 10242 - ##### `Readonly`TEXTURE\_WRAP\_T: 10243 - ##### `Readonly`TEXTURE0: 33984 - ##### `Readonly`TEXTURE1: 33985 - ##### `Readonly`TEXTURE10: 33994 - ##### `Readonly`TEXTURE11: 33995 - ##### `Readonly`TEXTURE12: 33996 - ##### `Readonly`TEXTURE13: 33997 - ##### `Readonly`TEXTURE14: 33998 - ##### `Readonly`TEXTURE15: 33999 - ##### `Readonly`TEXTURE16: 34000 - ##### `Readonly`TEXTURE17: 34001 - ##### `Readonly`TEXTURE18: 34002 - ##### `Readonly`TEXTURE19: 34003 - ##### `Readonly`TEXTURE2: 33986 - ##### `Readonly`TEXTURE20: 34004 - ##### `Readonly`TEXTURE21: 34005 - ##### `Readonly`TEXTURE22: 34006 - ##### `Readonly`TEXTURE23: 34007 - ##### `Readonly`TEXTURE24: 34008 - ##### `Readonly`TEXTURE25: 34009 - ##### `Readonly`TEXTURE26: 34010 - ##### `Readonly`TEXTURE27: 34011 - ##### `Readonly`TEXTURE28: 34012 - ##### `Readonly`TEXTURE29: 34013 - ##### `Readonly`TEXTURE3: 33987 - ##### `Readonly`TEXTURE30: 34014 - ##### `Readonly`TEXTURE31: 34015 - ##### `Readonly`TEXTURE4: 33988 - ##### `Readonly`TEXTURE5: 33989 - ##### `Readonly`TEXTURE6: 33990 - ##### `Readonly`TEXTURE7: 33991 - ##### `Readonly`TEXTURE8: 33992 - ##### `Readonly`TEXTURE9: 33993 - ##### `Readonly`TRIANGLE\_FAN: 6 - ##### `Readonly`TRIANGLE\_STRIP: 5 - ##### `Readonly`TRIANGLES: 4 - ##### `Readonly`UNPACK\_ALIGNMENT: 3317 - ##### `Readonly`UNPACK\_COLORSPACE\_CONVERSION\_WEBGL: 37443 - ##### `Readonly`UNPACK\_FLIP\_Y\_WEBGL: 37440 - ##### `Readonly`UNPACK\_PREMULTIPLY\_ALPHA\_WEBGL: 37441 - ##### `Readonly`UNSIGNED\_BYTE: 5121 - ##### `Readonly`UNSIGNED\_INT: 5125 - ##### `Readonly`UNSIGNED\_SHORT: 5123 - ##### `Readonly`UNSIGNED\_SHORT\_4\_4\_4\_4: 32819 - ##### `Readonly`UNSIGNED\_SHORT\_5\_5\_5\_1: 32820 - ##### `Readonly`UNSIGNED\_SHORT\_5\_6\_5: 33635 - ##### `Readonly`VALIDATE\_STATUS: 35715 - ##### `Readonly`VENDOR: 7936 - ##### `Readonly`VERSION: 7938 - ##### `Readonly`VERTEX\_ATTRIB\_ARRAY\_BUFFER\_BINDING: 34975 - ##### `Readonly`VERTEX\_ATTRIB\_ARRAY\_ENABLED: 34338 - ##### `Readonly`VERTEX\_ATTRIB\_ARRAY\_NORMALIZED: 34922 - ##### `Readonly`VERTEX\_ATTRIB\_ARRAY\_POINTER: 34373 - ##### `Readonly`VERTEX\_ATTRIB\_ARRAY\_SIZE: 34339 - ##### `Readonly`VERTEX\_ATTRIB\_ARRAY\_STRIDE: 34340 - ##### `Readonly`VERTEX\_ATTRIB\_ARRAY\_TYPE: 34341 - ##### `Readonly`VERTEX\_SHADER: 35633 - ##### `Readonly`VIEWPORT: 2978 - ##### `Readonly`ZERO: 0