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WebGL constants

The WebGL API provides several constants that are passed into or returned by functions. All constants are of type GLenum.

Standard WebGL constants are installed on the WebGLRenderingContext and WebGL2RenderingContext objects, so that you use them as gl.CONSTANT_NAME:

var canvas = document.getElementById('myCanvas');
var gl = canvas.getContext('webgl');

gl.getParameter(gl.LINE_WIDTH);

Some constants are also provided by WebGL extensions. A list is provided below.

var debugInfo = gl.getExtension('WEBGL_debug_renderer_info');
var vendor = gl.getParameter(debugInfo.UNMASKED_VENDOR_WEBGL);

The WebGL tutorial has more information, examples, and resources on how to get started with WebGL.

Table of contents

Standard WebGL 1 constants

These constants are defined on the WebGLRenderingContext interface.

Clearing buffers

Constants passed to WebGLRenderingContext.clear() to clear buffer masks.

Constant name Value Description
DEPTH_BUFFER_BIT 0x00000100 Passed to clear to clear the current depth buffer.
STENCIL_BUFFER_BIT 0x00000400 Passed to clear to clear the current stencil buffer.
COLOR_BUFFER_BIT 0x00004000 Passed to clear to clear the current color buffer.

Rendering primitives

Constants passed to WebGLRenderingContext.drawElements() or WebGLRenderingContext.drawArrays() to specify what kind of primitive to render.

Constant name Value Description
POINTS 0x0000 Passed to drawElements or drawArrays to draw single points.
LINES 0x0001 Passed to drawElements or drawArrays to draw lines. Each vertex connects to the one after it.
LINE_LOOP 0x0002 Passed to drawElements or drawArrays to draw lines. Each set of two vertices is treated as a separate line segment.
LINE_STRIP 0x0003 Passed to drawElements or drawArrays to draw a connected group of line segments from the first vertex to the last.
TRIANGLES 0x0004 Passed to drawElements or drawArrays to draw triangles. Each set of three vertices creates a separate triangle.
TRIANGLE_STRIP 0x0005 Passed to drawElements or drawArrays to draw a connected group of triangles.
TRIANGLE_FAN 0x0006 Passed to drawElements or drawArrays to draw a connected group of triangles. Each vertex connects to the previous and the first vertex in the fan.

Blending modes

Constants passed to WebGLRenderingContext.blendFunc() or WebGLRenderingContext.blendFuncSeparate() to specify the blending mode (for both, RBG and alpha, or separately).

Constant name Value Description
ZERO 0 Passed to blendFunc or blendFuncSeparate to turn off a component.
ONE 1 Passed to blendFunc or blendFuncSeparate to turn on a component.
SRC_COLOR 0x0300 Passed to blendFunc or blendFuncSeparate to multiply a component by the source elements color.
ONE_MINUS_SRC_COLOR 0x0301 Passed to blendFunc or blendFuncSeparate to multiply a component by one minus the source elements color.
SRC_ALPHA 0x0302 Passed to blendFunc or blendFuncSeparate to multiply a component by the source's alpha.
ONE_MINUS_SRC_ALPHA 0x0303 Passed to blendFunc or blendFuncSeparate to multiply a component by one minus the source's alpha.
DST_ALPHA 0x0304 Passed to blendFunc or blendFuncSeparate to multiply a component by the destination's alpha.
ONE_MINUS_DST_ALPHA 0x0305 Passed to blendFunc or blendFuncSeparate to multiply a component by one minus the destination's alpha.
DST_COLOR 0x0306 Passed to blendFunc or blendFuncSeparate to multiply a component by the destination's color.
ONE_MINUS_DST_COLOR 0x0307 Passed to blendFunc or blendFuncSeparate to multiply a component by one minus the destination's color.
SRC_ALPHA_SATURATE 0x0308 Passed to blendFunc or blendFuncSeparate to multiply a component by the minimum of source's alpha or one minus the destination's alpha.
CONSTANT_COLOR 0x8001 Passed to blendFunc or blendFuncSeparate to specify a constant color blend function.
ONE_MINUS_CONSTANT_COLOR 0x8002 Passed to blendFunc or blendFuncSeparate to specify one minus a constant color blend function.
CONSTANT_ALPHA 0x8003 Passed to blendFunc or blendFuncSeparate to specify a constant alpha blend function.
ONE_MINUS_CONSTANT_ALPHA 0x8004 Passed to blendFunc or blendFuncSeparate to specify one minus a constant alpha blend function.

Blending equations

Constants passed to WebGLRenderingContext.blendEquation() or WebGLRenderingContext.blendEquationSeparate() to control how the blending is calculated (for both, RBG and alpha, or separately).

Constant name Value Description
FUNC_ADD 0x8006 Passed to blendEquation or blendEquationSeparate to set an addition blend function.
FUNC_SUBSTRACT 0x800A Passed to blendEquation or blendEquationSeparate to specify a subtraction blend function (source - destination).
FUNC_REVERSE_SUBTRACT 0x800B Passed to blendEquation or blendEquationSeparate to specify a reverse subtraction blend function (destination - source).

Getting GL parameter information

Constants passed to WebGLRenderingContext.getParameter() to specify what information to return.

Constant name Value Description
BLEND_EQUATION 0x8009 Passed to getParameter to get the current RGB blend function.
BLEND_EQUATION_RGB 0x8009 Passed to getParameter to get the current RGB blend function. Same as BLEND_EQUATION
BLEND_EQUATION_ALPHA 0x883D Passed to getParameter to get the current alpha blend function. Same as BLEND_EQUATION
BLEND_DST_RGB 0x80C8 Passed to getParameter to get the current destination RGB blend function.
BLEND_SRC_RGB 0x80C9 Passed to getParameter to get the current destination RGB blend function.
BLEND_DST_ALPHA 0x80CA Passed to getParameter to get the current destination alpha blend function.
BLEND_SRC_ALPHA 0x80CB Passed to getParameter to get the current source alpha blend function.
BLEND_COLOR 0x8005 Passed to getParameter to return a the current blend color.
ARRAY_BUFFER_BINDING 0x8894 Passed to getParameter to get the array buffer binding.
ELEMENT_ARRAY_BUFFER_BINDING 0x8895 Passed to getParameter to get the current element array buffer.
LINE_WIDTH 0x0B21 Passed to getParameter to get the current lineWidth (set by the lineWidth method).
ALIASED_POINT_SIZE_RANGE 0x846D Passed to getParameter to get the current size of a point drawn with gl.POINTS
ALIASED_LINE_WIDTH_RANGE 0x846E Passed to getParameter to get the range of available widths for a line. Returns a length-2 array with the lo value at 0, and hight at 1.
CULL_FACE_MODE 0x0B45 Passed to getParameter to get the current value of cullFace. Should return FRONT, BACK, or FRONT_AND_BACK
FRONT_FACE 0x0B46 Passed to getParameter to determine the current value of frontFace. Should return CW or CCW.
DEPTH_RANGE 0x0B70 Passed to getParameter to return a length-2 array of floats giving the current depth range.
DEPTH_WRITEMASK 0x0B72 Passed to getParameter to determine if the depth write mask is enabled.
DEPTH_CLEAR_VALUE 0x0B73 Passed to getParameter to determine the current depth clear value.
DEPTH_FUNC 0x0B74 Passed to getParameter to get the current depth function. Returns NEVER, ALWAYS, LESS, EQUAL, LEQUAL, GREATER, GEQUAL, or NOTEQUAL.
STENCIL_CLEAR_VALUE 0x0B91 Passed to getParameter to get the value the stencil will be cleared to.
STENCIL_FUNC 0x0B92 Passed to getParameter to get the current stencil function. Returns NEVER, ALWAYS, LESS, EQUAL, LEQUAL, GREATER, GEQUAL, or NOTEQUAL.
STENCIL_FAIL 0x0B94 Passed to getParameter to get the current stencil fail function. Should return KEEP, REPLACE, INCR, DECR, INVERT, INCR_WRAP, or DECR_WRAP.
STENCIL_PASS_DEPTH_FAIL 0x0B95 Passed to getParameter to get the current stencil fail function should the depth buffer test fail. Should return KEEP, REPLACE, INCR, DECR, INVERT, INCR_WRAP, or DECR_WRAP.
STENCIL_PASS_DEPTH_PASS 0x0B96 Passed to getParameter to get the current stencil fail function should the depth buffer test pass. Should return KEEP, REPLACE, INCR, DECR, INVERT, INCR_WRAP, or DECR_WRAP.
STENCIL_REF 0x0B97 Passed to getParameter to get the reference value used for stencil tests.
STENCIL_VALUE_MASK 0x0B93  
STENCIL_WRITEMASK 0x0B98  
STENCIL_BACK_FUNC 0x8800  
STENCIL_BACK_FAIL 0x8801  
STENCIL_BACK_PASS_DEPTH_FAIL 0x8802  
STENCIL_BACK_PASS_DEPTH_PASS 0x8803  
STENCIL_BACK_REF 0x8CA3  
STENCIL_BACK_VALUE_MASK 0x8CA4  
STENCIL_BACK_WRITEMASK 0x8CA5  
VIEWPORT 0x0BA2 Returns an Int32Array with four elements for the current viewport dimensions.
SCISSOR_BOX 0x0C10 Returns an Int32Array with four elements for the current scissor box dimensions.
COLOR_CLEAR_VALUE 0x0C22  
COLOR_WRITEMASK 0x0C23  
UNPACK_ALIGNMENT 0x0CF5  
PACK_ALIGNMENT 0x0D05  
MAX_TEXTURE_SIZE 0x0D33  
MAX_VIEWPORT_DIMS 0x0D3A  
SUBPIXEL_BITS 0x0D50  
RED_BITS 0x0D52  
GREEN_BITS 0x0D53  
BLUE_BITS 0x0D54  
ALPHA_BITS 0x0D55  
DEPTH_BITS 0x0D56  
STENCIL_BITS 0x0D57  
POLYGON_OFFSET_UNITS 0x2A00  
POLYGON_OFFSET_FACTOR 0x8038  
TEXTURE_BINDING_2D 0x8069  
SAMPLE_BUFFERS 0x80A8  
SAMPLES 0x80A9  
SAMPLE_COVERAGE_VALUE 0x80AA  
SAMPLE_COVERAGE_INVERT 0x80AB  
COMPRESSED_TEXTURE_FORMATS 0x86A3  
VENDOR 0x1F00  
RENDERER 0x1F01  
VERSION 0x1F02  
IMPLEMENTATION_COLOR_READ_TYPE 0x8B9A  
IMPLEMENTATION_COLOR_READ_FORMAT 0x8B9B  
BROWSER_DEFAULT_WEBGL 0x9244  

Buffers

Constants passed to WebGLRenderingContext.bufferData(), WebGLRenderingContext.bufferSubData(), WebGLRenderingContext.bindBuffer(), or WebGLRenderingContext.getBufferParameter().

Constant name Value Description
STATIC_DRAW 0x88E4 Passed to bufferData as a hint about whether the contents of the buffer are likely to be used often and not change often.
STREAM_DRAW 0x88E0 Passed to bufferData as a hint about whether the contents of the buffer are likely to not be used often.
DYNAMIC_DRAW 0x88E8 Passed to bufferData as a hint about whether the contents of the buffer are likely to be used often and change often.
ARRAY_BUFFER 0x8892 Passed to bindBuffer or bufferData to specify the type of buffer being used.
ELEMENT_ARRAY_BUFFER 0x8893 Passed to bindBuffer or bufferData to specify the type of buffer being used.
BUFFER_SIZE 0x8764 Passed to getBufferParameter to get a buffer's size.
BUFFER_USAGE 0x8765 Passed to getBufferParameter to get the hint for the buffer passed in when it was created.

Vertex attributes

Constants passed to WebGLRenderingContext.getVertexAttrib().

Constant name Value Description
CURRENT_VERTEX_ATTRIB 0x8626 Passed to getVertexAttrib to read back the current vertex attribute.
VERTEX_ATTRIB_ARRAY_ENABLED 0x8622  
VERTEX_ATTRIB_ARRAY_SIZE 0x8623  
VERTEX_ATTRIB_ARRAY_STRIDE 0x8624  
VERTEX_ATTRIB_ARRAY_TYPE 0x8625  
VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A  
VERTEX_ATTRIB_ARRAY_POINTER 0x8645  
VERTEX_ATTRIB_ARRAY_BUFFER_BINDING 0x889F  

Culling

Constants passed to WebGLRenderingContext.cullFace().

Constant name Value Description
CULL_FACE 0x0B44 Passed to enable/disable to turn on/off culling. Can also be used with getParameter to find the current culling method.
FRONT 0x0404 Passed to cullFace to specify that only front faces should be drawn.
BACK 0x0405 Passed to cullFace to specify that only back faces should be drawn.
FRONT_AND_BACK 0x0408 Passed to cullFace to specify that front and back faces should be drawn.

Enabling and disabling

Constants passed to WebGLRenderingContext.enable() or WebGLRenderingContext.disable().

Constant name Value Description
BLEND 0x0BE2 Passed to enable/disable to turn on/off blending. Can also be used with getParameter to find the current blending method.
DEPTH_TEST 0x0B71 Passed to enable/disable to turn on/off the depth test. Can also be used with getParameter to query the depth test.
DITHER 0x0BD0 Passed to enable/disable to turn on/off dithering. Can also be used with getParameter to find the current dithering method.
POLYGON_OFFSET_FILL 0x8037 Passed to enable/disable to turn on/off the polygon offset. Useful for rendering hidden-line images, decals, and or solids with highlighted edges. Can also be used with getParameter to query the scissor test.
SAMPLE_ALPHA_TO_COVERAGE 0x809E Passed to enable/disable to turn on/off the alpha to coverage. Used in multi-sampling alpha channels.
SAMPLE_COVERAGE 0x80A0 Passed to enable/disable to turn on/off the sample coverage. Used in multi-sampling.
SCISSOR_TEST 0x0C11 Passed to enable/disable to turn on/off the scissor test. Can also be used with getParameter to query the scissor test.
STENCIL_TEST 0x0B90 Passed to enable/disable to turn on/off the stencil test. Can also be used with getParameter to query the stencil test.

Errors

Constants returned from WebGLRenderingContext.getError().

Constant name Value Description
NO_ERROR 0 Returned from getError.
INVALID_ENUM 0x0500 Returned from getError.
INVALID_VALUE 0x0501 Returned from getError.
INVALID_OPERATION 0x0502 Returned from getError.
OUT_OF_MEMORY 0x0505 Returned from getError.
CONTEXT_LOST_WEBGL 0x9242 Returned from getError.

Front face directions

Constants passed to WebGLRenderingContext.frontFace().

Constant name Value Description
CW 0x0900 Passed to frontFace to specify the front face of a polygon is drawn in the clockwise direction
CCW 0x0901 Passed to frontFace to specify the front face of a polygon is drawn in the counter clockwise direction

Hints

Constants passed to WebGLRenderingContext.hint()

Constant name Value Description
DONT_CARE 0x1100 There is no preference for this behavior.
FASTEST 0x1101 The most efficient behavior should be used.
NICEST 0x1102 The most correct or the highest quality option should be used.
GENERATE_MIPMAP_HINT 0x8192 Hint for the quality of filtering when generating mipmap images with WebGLRenderingContext.generateMipmap().

Data types

Constant name Value Description
BYTE 0x1400  
UNSIGNED_BYTE 0x1401  
SHORT 0x1402  
UNSIGNED_SHORT 0x1403  
INT 0x1404  
UNSIGNED_INT 0x1405  
FLOAT 0x1406  

Pixel formats

Constant name Value Description
DEPTH_COMPONENT 0x1902  
ALPHA 0x1906  
RGB 0x1907  
RGBA 0x1908  
LUMINANCE 0x1909  
LUMINANCE_ALPHA 0x190A  

Pixel types

Constant name Value Description
UNSIGNED_BYTE 0x1401  
UNSIGNED_SHORT_4_4_4_4 0x8033  
UNSIGNED_SHORT_5_5_5_1 0x8034  
UNSIGNED_SHORT_5_6_5 0x8363  

Shaders

Constants passed to WebGLRenderingContext.createShader() or WebGLRenderingContext.getShaderParameter()

Constant name Value Description
FRAGMENT_SHADER 0x8B30 Passed to createShader to define a fragment shader.
VERTEX_SHADER 0x8B31 Passed to createShader to define a vertex shader
COMPILE_STATUS 0x8B81 Passed to getShaderParamter to get the status of the compilation. Returns false if the shader was not compiled. You can then query getShaderInfoLog to find the exact error
DELETE_STATUS 0x8B80 Passed to getShaderParamter to determine if a shader was deleted via deleteShader. Returns true if it was, false otherwise.
LINK_STATUS 0x8B82 Passed to getProgramParameter after calling linkProgram to determine if a program was linked correctly. Returns false if there were errors. Use getProgramInfoLog to find the exact error.
VALIDATE_STATUS 0x8B83 Passed to getProgramParameter after calling validateProgram to determine if it is valid. Returns false if errors were found.
ATTACHED_SHADERS 0x8B85 Passed to getProgramParameter after calling attachShader to determine if the shader was attached correctly. Returns false if errors occurred.
ACTIVE_ATTRIBUTES 0x8B89 Passed to getProgramParameter to get the number of attributes active in a program.
ACTIVE_UNIFORMS 0x8B86 Passed to getProgramParamter to get the number of uniforms active in a program.
MAX_VERTEX_ATTRIBS 0x8869  
MAX_VERTEX_UNIFORM_VECTORS 0x8DFB  
MAX_VARYING_VECTORS 0x8DFC  
MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D  
MAX_VERTEX_TEXTURE_IMAGE_UNITS 0x8B4C  
MAX_TEXTURE_IMAGE_UNITS 0x8872 Implementation dependent number of maximum texture units. At least 8.
MAX_FRAGMENT_UNIFORM_VECTORS 0x8DFD  
SHADER_TYPE 0x8B4F  
SHADING_LANGUAGE_VERSION 0x8B8C  
CURRENT_PROGRAM 0x8B8D  

Depth or stencil tests

Constants passed to WebGLRenderingContext.depthFunc() or WebGLRenderingContext.stencilFunc().

Constant name Value Description
NEVER 0x0200 Passed to depthFunction or stencilFunction to specify depth or stencil tests will never pass. i.e. Nothing will be drawn.
ALWAYS 0x0207 Passed to depthFunction or stencilFunction to specify depth or stencil tests will always pass. i.e. Pixels will be drawn in the order they are drawn.
LESS 0x0201 Passed to depthFunction or stencilFunction to specify depth or stencil tests will pass if the new depth value is less than the stored value.
EQUAL 0x0202 Passed to depthFunction or stencilFunction to specify depth or stencil tests will pass if the new depth value is equals to the stored value.
LEQUAL 0x0203 Passed to depthFunction or stencilFunction to specify depth or stencil tests will pass if the new depth value is less than or equal to the stored value.
GREATER 0x0204 Passed to depthFunction or stencilFunction to specify depth or stencil tests will pass if the new depth value is greater than the stored value.
GEQUAL 0x0206 Passed to depthFunction or stencilFunction to specify depth or stencil tests will pass if the new depth value is greater than or equal to the stored value.
NOTEQUAL 0x0205 Passed to depthFunction or stencilFunction to specify depth or stencil tests will pass if the new depth value is not equal to the stored value.

Stencil actions

Constants passed to WebGLRenderingContext.stencilOp().

Constant name Value Description
KEEP 0x1E00  
REPLACE 0x1E01  
INCR 0x1E02  
DECR 0x1E03  
INVERT 0x150A  
INCR_WRAP 0x8507  
DECR_WRAP 0x8508  

Textures

Constants passed to WebGLRenderingContext.texParameteri(), WebGLRenderingContext.texParameterf(), WebGLRenderingContext.bindTexture(), WebGLRenderingContext.texImage2D(), and others.

Constant name Value Description
NEAREST 0x2600  
LINEAR 0x2601  
NEAREST_MIPMAP_NEAREST 0x2700  
LINEAR_MIPMAP_NEAREST 0x2701  
NEAREST_MIPMAP_LINEAR 0x2702  
LINEAR_MIPMAP_LINEAR 0x2703  
TEXTURE_MAG_FILTER 0x2800  
TEXTURE_MIN_FILTER 0x2801  
TEXTURE_WRAP_S 0x2802  
TEXTURE_WRAP_T 0x2803  
TEXTURE_2D 0x0DE1  
TEXTURE 0x1702  
TEXTURE_CUBE_MAP 0x8513  
TEXTURE_BINDING_CUBE_MAP 0x8514  
TEXTURE_CUBE_MAP_POSITIVE_X 0x8515  
TEXTURE_CUBE_MAP_NEGATIVE_X 0x8516  
TEXTURE_CUBE_MAP_POSITIVE_Y 0x8517  
TEXTURE_CUBE_MAP_NEGATIVE_Y 0x8518  
TEXTURE_CUBE_MAP_POSITIVE_Z 0x8519  
TEXTURE_CUBE_MAP_NEGATIVE_Z 0x851A  
MAX_CUBE_MAP_TEXTURE_SIZE 0x851C  
TEXTURE0 - 31 0x84C0 - 0x84DF A texture unit.
ACTIVE_TEXTURE 0x84E0 The current active texture unit.
REPEAT 0x2901  
CLAMP_TO_EDGE 0x812F  
MIRRORED_REPEAT 0x8370  

Uniform types

Constant name Value Description
FLOAT_VEC2 0x8B50  
FLOAT_VEC3 0x8B51  
FLOAT_VEC4 0x8B52  
INT_VEC2 0x8B53  
INT_VEC3 0x8B54  
INT_VEC4 0x8B55  
BOOL 0x8B56  
BOOL_VEC2 0x8B57  
BOOL_VEC3 0x8B58  
BOOL_VEC4 0x8B59  
FLOAT_MAT2 0x8B5A  
FLOAT_MAT3 0x8B5B  
FLOAT_MAT4 0x8B5C  
SAMPLER_2D 0x8B5E  
SAMPLER_CUBE 0x8B60  

Shader precision-specified types

Constant name Value Description
LOW_FLOAT 0x8DF0  
MEDIUM_FLOAT 0x8DF1  
HIGH_FLOAT 0x8DF2  
LOW_INT 0x8DF3  
MEDIUM_INT 0x8DF4  
HIGH_INT 0x8DF5  

Framebuffers and renderbuffers

Constant name Value Description
FRAMEBUFFER 0x8D40  
RENDERBUFFER 0x8D41  
RGBA4 0x8056  
RGB5_A1 0x8057  
RGB565 0x8D62  
DEPTH_COMPONENT16 0x81A5  
STENCIL_INDEX 0x1901  
STENCIL_INDEX8 0x8D48  
DEPTH_STENCIL 0x84F9  
RENDERBUFFER_WIDTH 0x8D42  
RENDERBUFFER_HEIGHT 0x8D43  
RENDERBUFFER_INTERNAL_FORMAT 0x8D44  
RENDERBUFFER_RED_SIZE 0x8D50  
RENDERBUFFER_GREEN_SIZE 0x8D51  
RENDERBUFFER_BLUE_SIZE 0x8D52  
RENDERBUFFER_ALPHA_SIZE 0x8D53  
RENDERBUFFER_DEPTH_SIZE 0x8D54  
RENDERBUFFER_STENCIL_SIZE 0x8D55  
FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE 0x8CD0  
FRAMEBUFFER_ATTACHMENT_OBJECT_NAME 0x8CD1  
FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL 0x8CD2  
FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE 0x8CD3  
COLOR_ATTACHMENT0 0x8CE0  
DEPTH_ATTACHMENT 0x8D00  
STENCIL_ATTACHMENT 0x8D20  
DEPTH_STENCIL_ATTACHMENT 0x821A  
NONE 0  
FRAMEBUFFER_COMPLETE 0x8CD5  
FRAMEBUFFER_INCOMPLETE_ATTACHMENT 0x8CD6  
FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7  
FRAMEBUFFER_INCOMPLETE_DIMENSIONS 0x8CD9  
FRAMEBUFFER_UNSUPPORTED 0x8CDD  
FRAMEBUFFER_BINDING 0x8CA6  
RENDERBUFFER_BINDING 0x8CA7  
MAX_RENDERBUFFER_SIZE 0x84E8  
INVALID_FRAMEBUFFER_OPERATION 0x0506  

Pixel storage modes

Constants passed to WebGLRenderingContext.pixelStorei().

Constant name Value Description
UNPACK_FLIP_Y_WEBGL 0x9240  
UNPACK_PREMULTIPLY_ALPHA_WEBGL 0x9241  
UNPACK_COLORSPACE_CONVERSION_WEBGL 0x9243  

Additional constants defined WebGL 2

These constants are defined on the WebGL2RenderingContext interface. All WebGL 1 constants are also available in a WebGL 2 context.

Getting GL parameter information

Constants passed to WebGLRenderingContext.getParameter() to specify what information to return.

Constant name Value Description
READ_BUFFER 0x0C02  
UNPACK_ROW_LENGTH 0x0CF2  
UNPACK_SKIP_ROWS 0x0CF3  
UNPACK_SKIP_PIXELS 0x0CF4  
PACK_ROW_LENGTH 0x0D02  
PACK_SKIP_ROWS 0x0D03  
PACK_SKIP_PIXELS 0x0D04  
TEXTURE_BINDING_3D 0x806A  
UNPACK_SKIP_IMAGES 0x806D  
UNPACK_IMAGE_HEIGHT 0x806E  
MAX_3D_TEXTURE_SIZE 0x8073  
MAX_ELEMENTS_VERTICES 0x80E8  
MAX_ELEMENTS_INDICES 0x80E9  
MAX_TEXTURE_LOD_BIAS 0x84FD  
MAX_FRAGMENT_UNIFORM_COMPONENTS 0x8B49  
MAX_VERTEX_UNIFORM_COMPONENTS 0x8B4A  
MAX_ARRAY_TEXTURE_LAYERS 0x88FF  
MIN_PROGRAM_TEXEL_OFFSET 0x8904  
MAX_PROGRAM_TEXEL_OFFSET 0x8905  
MAX_VARYING_COMPONENTS 0x8B4B  
FRAGMENT_SHADER_DERIVATIVE_HINT 0x8B8B  
RASTERIZER_DISCARD 0x8C89  
VERTEX_ARRAY_BINDING 0x85B5  
MAX_VERTEX_OUTPUT_COMPONENTS 0x9122  
MAX_FRAGMENT_INPUT_COMPONENTS 0x9125  
MAX_SERVER_WAIT_TIMEOUT 0x9111  
MAX_ELEMENT_INDEX 0x8D6B  

Textures

Constants passed to WebGLRenderingContext.texParameteri(), WebGLRenderingContext.texParameterf(), WebGLRenderingContext.bindTexture(), WebGLRenderingContext.texImage2D(), and others.

Constant name Value Description
RED 0x1903  
RGB8 0x8051  
RGBA8 0x8058  
RGB10_A2 0x8059  
TEXTURE_3D 0x806F  
TEXTURE_WRAP_R 0x8072  
TEXTURE_MIN_LOD 0x813A  
TEXTURE_MAX_LOD 0x813B  
TEXTURE_BASE_LEVEL 0x813C  
TEXTURE_MAX_LEVEL 0x813D  
TEXTURE_COMPARE_MODE 0x884C  
TEXTURE_COMPARE_FUNC 0x884D  
SRGB 0x8C40  
SRGB8 0x8C41  
SRGB8_ALPHA8 0x8C43  
COMPARE_REF_TO_TEXTURE 0x884E  
RGBA32F 0x8814  
RGB32F 0x8815  
RGBA16F 0x881A  
RGB16F 0x881B  
TEXTURE_2D_ARRAY 0x8C1A  
TEXTURE_BINDING_2D_ARRAY 0x8C1D  
R11F_G11F_B10F 0x8C3A  
RGB9_E5 0x8C3D  
RGBA32UI 0x8D70  
RGB32UI 0x8D71  
RGBA16UI 0x8D76  
RGB16UI 0x8D77  
RGBA8UI 0x8D7C  
RGB8UI 0x8D7D  
RGBA32I 0x8D82  
RGB32I 0x8D83  
RGBA16I 0x8D88  
RGB16I 0x8D89  
RGBA8I 0x8D8E  
RGB8I 0x8D8F  
RED_INTEGER 0x8D94  
RGB_INTEGER 0x8D98  
RGBA_INTEGER 0x8D99  
R8 0x8229  
RG8 0x822B  
R16F 0x822D  
R32F 0x822E  
RG16F 0x822F  
RG32F 0x8230  
R8I 0x8231  
R8UI 0x8232  
R16I 0x8233  
R16UI 0x8234  
R32I 0x8235  
R32UI 0x8236  
RG8I 0x8237  
RG8UI 0x8238  
RG16I 0x8239  
RG16UI 0x823A  
RG32I 0x823B  
RG32UI 0x823C  
R8_SNORM 0x8F94  
RG8_SNORM 0x8F95  
RGB8_SNORM 0x8F96  
RGBA8_SNORM 0x8F97  
RGB10_A2UI 0x906F  
COMPRESSED_R11_EAC 0x9270  
COMPRESSED_SIGNED_R11_EAC 0x9271  
COMPRESSED_RG11_EAC 0x9272  
COMPRESSED_SIGNED_RG11_EAC 0x9273  
COMPRESSED_RGB8_ETC2 0x9274  
COMPRESSED_SRGB8_ETC2 0x9275  
COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9276  
COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC 0x9277  
COMPRESSED_RGBA8_ETC2_EAC 0x9278  
COMPRESSED_SRGB8_ALPHA8_ETC2_EAC 0x9279  
TEXTURE_IMMUTABLE_FORMAT 0x912F  
TEXTURE_IMMUTABLE_LEVELS 0x82DF  

Pixel types

Constant name Value Description
UNSIGNED_INT_2_10_10_10_REV 0x8368  
UNSIGNED_INT_10F_11F_11F_REV 0x8C3B  
UNSIGNED_INT_5_9_9_9_REV 0x8C3E  
FLOAT_32_UNSIGNED_INT_24_8_REV 0x8DAD  
UNSIGNED_INT_24_8 0x84FA  
HALF_FLOAT 0x140B  
RG 0x8227  
RG_INTEGER 0x8228  
INT_2_10_10_10_REV 0x8D9F  

Queries

Constant name Value Description
CURRENT_QUERY 0x8865  
QUERY_RESULT 0x8866  
QUERY_RESULT_AVAILABLE 0x8867  
ANY_SAMPLES_PASSED 0x8C2F  
ANY_SAMPLES_PASSED_CONSERVATIVE 0x8D6A  

Draw buffers

Constant name Value Description
MAX_DRAW_BUFFERS 0x8824  
DRAW_BUFFER0 0x8825  
DRAW_BUFFER1 0x8826  
DRAW_BUFFER2 0x8827  
DRAW_BUFFER3 0x8828  
DRAW_BUFFER4 0x8829  
DRAW_BUFFER5 0x882A  
DRAW_BUFFER6 0x882B  
DRAW_BUFFER7 0x882C  
DRAW_BUFFER8 0x882D  
DRAW_BUFFER9 0x882E  
DRAW_BUFFER10 0x882F  
DRAW_BUFFER11 0x8830  
DRAW_BUFFER12 0x8831  
DRAW_BUFFER13 0x8832  
DRAW_BUFFER14 0x8833  
DRAW_BUFFER15 0x8834  
MAX_COLOR_ATTACHMENTS 0x8CDF  
COLOR_ATTACHMENT1 0x8CE1  
COLOR_ATTACHMENT2 0x8CE2  
COLOR_ATTACHMENT3 0x8CE3  
COLOR_ATTACHMENT4 0x8CE4  
COLOR_ATTACHMENT5 0x8CE5  
COLOR_ATTACHMENT6 0x8CE6  
COLOR_ATTACHMENT7 0x8CE7  
COLOR_ATTACHMENT8 0x8CE8  
COLOR_ATTACHMENT9 0x8CE9  
COLOR_ATTACHMENT10 0x8CEA  
COLOR_ATTACHMENT11 0x8CEB  
COLOR_ATTACHMENT12 0x8CEC  
COLOR_ATTACHMENT13 0x8CED  
COLOR_ATTACHMENT14 0x8CEE  
COLOR_ATTACHMENT15 0x8CEF  

Samplers

Constant name Value Description
SAMPLER_3D 0x8B5F  
SAMPLER_2D_SHADOW 0x8B62  
SAMPLER_2D_ARRAY 0x8DC1  
SAMPLER_2D_ARRAY_SHADOW 0x8DC4  
SAMPLER_CUBE_SHADOW 0x8DC5  
INT_SAMPLER_2D 0x8DCA  
INT_SAMPLER_3D 0x8DCB  
INT_SAMPLER_CUBE 0x8DCC  
INT_SAMPLER_2D_ARRAY 0x8DCF  
UNSIGNED_INT_SAMPLER_2D 0x8DD2  
UNSIGNED_INT_SAMPLER_3D 0x8DD3  
UNSIGNED_INT_SAMPLER_CUBE 0x8DD4  
UNSIGNED_INT_SAMPLER_2D_ARRAY 0x8DD7  
MAX_SAMPLES 0x8D57  
SAMPLER_BINDING 0x8919  

Buffers

Constant name Value Description
PIXEL_PACK_BUFFER 0x88EB  
PIXEL_UNPACK_BUFFER 0x88EC  
PIXEL_PACK_BUFFER_BINDING 0x88ED  
PIXEL_UNPACK_BUFFER_BINDING 0x88EF  
COPY_READ_BUFFER 0x8F36  
COPY_WRITE_BUFFER 0x8F37  
COPY_READ_BUFFER_BINDING 0x8F36  
COPY_WRITE_BUFFER_BINDING 0x8F37  

Data types

Constant name Value Description
FLOAT_MAT2x3 0x8B65  
FLOAT_MAT2x4 0x8B66  
FLOAT_MAT3x2 0x8B67  
FLOAT_MAT3x4 0x8B68  
FLOAT_MAT4x2 0x8B69  
FLOAT_MAT4x3 0x8B6A  
UNSIGNED_INT_VEC2 0x8DC6  
UNSIGNED_INT_VEC3 0x8DC7  
UNSIGNED_INT_VEC4 0x8DC8  
UNSIGNED_NORMALIZED 0x8C17  
SIGNED_NORMALIZED 0x8F9C  

Vertex attributes

Constant name Value Description
VERTEX_ATTRIB_ARRAY_INTEGER 0x88FD  
VERTEX_ATTRIB_ARRAY_DIVISOR 0x88FE  

Transform feedback

Constant name Value Description
TRANSFORM_FEEDBACK_BUFFER_MODE 0x8C7F  
MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS 0x8C80  
TRANSFORM_FEEDBACK_VARYINGS 0x8C83  
TRANSFORM_FEEDBACK_BUFFER_START 0x8C84  
TRANSFORM_FEEDBACK_BUFFER_SIZE 0x8C85  
TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN 0x8C88  
MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS 0x8C8A  
MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS 0x8C8B  
INTERLEAVED_ATTRIBS 0x8C8C  
SEPARATE_ATTRIBS 0x8C8D  
TRANSFORM_FEEDBACK_BUFFER 0x8C8E  
TRANSFORM_FEEDBACK_BUFFER_BINDING 0x8C8F  
TRANSFORM_FEEDBACK 0x8E22  
TRANSFORM_FEEDBACK_PAUSED 0x8E23  
TRANSFORM_FEEDBACK_ACTIVE 0x8E24  
TRANSFORM_FEEDBACK_BINDING 0x8E25  

Framebuffers and renderbuffers

Constant name Value Description
FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING 0x8210  
FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE 0x8211  
FRAMEBUFFER_ATTACHMENT_RED_SIZE 0x8212  
FRAMEBUFFER_ATTACHMENT_GREEN_SIZE 0x8213  
FRAMEBUFFER_ATTACHMENT_BLUE_SIZE 0x8214  
FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE 0x8215  
FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE 0x8216  
FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE 0x8217  
FRAMEBUFFER_DEFAULT 0x8218  
DEPTH_STENCIL_ATTACHMENT 0x821A  
DEPTH_STENCIL 0x84F9  
DEPTH24_STENCIL8 0x88F0  
DRAW_FRAMEBUFFER_BINDING 0x8CA6  
READ_FRAMEBUFFER 0x8CA8  
DRAW_FRAMEBUFFER 0x8CA9  
READ_FRAMEBUFFER_BINDING 0x8CAA  
RENDERBUFFER_SAMPLES 0x8CAB  
FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER 0x8CD4  
FRAMEBUFFER_INCOMPLETE_MULTISAMPLE 0x8D56  

Uniforms

Constant name Value Description
UNIFORM_BUFFER 0x8A11  
UNIFORM_BUFFER_BINDING 0x8A28  
UNIFORM_BUFFER_START 0x8A29  
UNIFORM_BUFFER_SIZE 0x8A2A  
MAX_VERTEX_UNIFORM_BLOCKS 0x8A2B  
MAX_FRAGMENT_UNIFORM_BLOCKS 0x8A2D  
MAX_COMBINED_UNIFORM_BLOCKS 0x8A2E  
MAX_UNIFORM_BUFFER_BINDINGS 0x8A2F  
MAX_UNIFORM_BLOCK_SIZE 0x8A30  
MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS 0x8A31  
MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS 0x8A33  
UNIFORM_BUFFER_OFFSET_ALIGNMENT 0x8A34  
ACTIVE_UNIFORM_BLOCKS 0x8A36  
UNIFORM_TYPE 0x8A37  
UNIFORM_SIZE 0x8A38  
UNIFORM_BLOCK_INDEX 0x8A3A  
UNIFORM_OFFSET 0x8A3B  
UNIFORM_ARRAY_STRIDE 0x8A3C  
UNIFORM_MATRIX_STRIDE 0x8A3D  
UNIFORM_IS_ROW_MAJOR 0x8A3E  
UNIFORM_BLOCK_BINDING 0x8A3F  
UNIFORM_BLOCK_DATA_SIZE 0x8A40  
UNIFORM_BLOCK_ACTIVE_UNIFORMS 0x8A42  
UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES 0x8A43  
UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER 0x8A44  
UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER 0x8A46  

Sync objects

Constant name Value Description
OBJECT_TYPE 0x9112  
SYNC_CONDITION 0x9113  
SYNC_STATUS 0x9114  
SYNC_FLAGS 0x9115  
SYNC_FENCE 0x9116  
SYNC_GPU_COMMANDS_COMPLETE 0x9117  
UNSIGNALED 0x9118  
SIGNALED 0x9119  
ALREADY_SIGNALED 0x911A  
TIMEOUT_EXPIRED 0x911B  
CONDITION_SATISFIED 0x911C  
WAIT_FAILED 0x911D  
SYNC_FLUSH_COMMANDS_BIT 0x00000001  

Miscellaneous constants

Constant name Value Description
COLOR 0x1800  
DEPTH 0x1801  
STENCIL 0x1802  
MIN 0x8007  
MAX 0x8008  
DEPTH_COMPONENT24 0x81A6  
STREAM_READ 0x88E1  
STREAM_COPY 0x88E2  
STATIC_READ 0x88E5  
STATIC_COPY 0x88E6  
DYNAMIC_READ 0x88E9  
DYNAMIC_COPY 0x88EA  
DEPTH_COMPONENT32F 0x8CAC  
DEPTH32F_STENCIL8 0x8CAD  
INVALID_INDEX 0xFFFFFFFF  
TIMEOUT_IGNORED -1  
MAX_CLIENT_WAIT_TIMEOUT_WEBGL 0x9247  

Constants defined in WebGL extensions

ANGLE_instanced_arrays

Constant name Value Description
VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE 0x88FE Describes the frequency divisor used for instanced rendering.

WEBGL_debug_renderer_info

Constant name Value Description
UNMASKED_VENDOR_WEBGL 0x9245 Passed to getParameter to get the vendor string of the graphics driver.
UNMASKED_RENDERER_WEBGL 0x9246 Passed to getParameter to get the renderer string of the graphics driver.

EXT_texture_filter_anisotropic

Constant name Value Description
MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF Returns the maximum available anisotropy.
TEXTURE_MAX_ANISOTROPY_EXT 0x84FE Passed to texParameter to set the desired maximum anisotropy for a texture.

WEBGL_compressed_texture_s3tc

Constant name Value Description
COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0 A DXT1-compressed image in an RGB image format.
COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1 A DXT1-compressed image in an RGB image format with a simple on/off alpha value.
COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2 A DXT3-compressed image in an RGBA image format. Compared to a 32-bit RGBA texture, it offers 4:1 compression.
COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3 A DXT5-compressed image in an RGBA image format. It also provides a 4:1 compression, but differs to the DXT3 compression in how the alpha compression is done.

WEBGL_compressed_texture_es3

Constant name Value Description
COMPRESSED_R11_EAC 0x9270 One-channel (red) unsigned format compression.
COMPRESSED_SIGNED_R11_EAC 0x9271 One-channel (red) signed format compression.
COMPRESSED_RG11_EAC 0x9272 Two-channel (red and green) unsigned format compression.
COMPRESSED_SIGNED_RG11_EAC 0x9273 Two-channel (red and green) signed format compression.
COMPRESSED_RGB8_ETC2 0x9274 Compresses RBG8 data with no alpha channel.
COMPRESSED_RGBA8_ETC2_EAC 0x9275 Compresses RGBA8 data. The RGB part is encoded the same as RGB_ETC2, but the alpha part is encoded separately.
COMPRESSED_SRGB8_ETC2 0x9276 Compresses sRBG8 data with no alpha channel.
COMPRESSED_SRGB8_ALPHA8_ETC2_EAC 0x9277 Compresses sRGBA8 data. The sRGB part is encoded the same as SRGB_ETC2, but the alpha part is encoded separately.
COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9278 Similar to RGB8_ETC, but with ability to punch through the alpha channel, which means to make it completely opaque or transparent.
COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2 0x9279 Similar to SRGB8_ETC, but with ability to punch through the alpha channel, which means to make it completely opaque or transparent.

WEBGL_compressed_texture_pvrtc

Constant name Value Description
COMPRESSED_RGB_PVRTC_4BPPV1_IMG 0x8C00 RGB compression in 4-bit mode. One block for each 4×4 pixels.
COMPRESSED_RGBA_PVRTC_4BPPV1_IMG 0x8C02 RGBA compression in 4-bit mode. One block for each 4×4 pixels.
COMPRESSED_RGB_PVRTC_2BPPV1_IMG 0x8C01 RGB compression in 2-bit mode. One block for each 8×4 pixels.
COMPRESSED_RGBA_PVRTC_2BPPV1_IMG 0x8C03 RGBA compression in 2-bit mode. One block for each 8×4 pixe

WEBGL_compressed_texture_etc1

Constant name Value Description
COMPRESSED_RGB_ETC1_WEBGL 0x8D64 Compresses 24-bit RGB data with no alpha channel.

WEBGL_compressed_texture_atc

Constant name Value Description
COMPRESSED_RGB_ATC_WEBGL 0x8C92 Compresses RGB textures with no alpha channel.
COMPRESSED_RGBA_ATC_EXPLICIT_ALPHA_WEBGL 0x8C92 Compresses RGBA textures using explicit alpha encoding (useful when alpha transitions are sharp).
COMPRESSED_RGBA_ATC_INTERPOLATED_ALPHA_WEBGL 0x87EE Compresses RGBA textures using interpolated alpha encoding (useful when alpha transitions are gradient).

WEBGL_depth_texture

Constant name Value Description
UNSIGNED_INT_24_8_WEBGL 0x84FA Unsigned integer type for 24-bit depth texture data.

OES_texture_half_float

Constant name Value Description
HALF_FLOAT_OES 0x8D61 Half floating-point type (16-bit).

WEBGL_color_buffer_float

Constant name Value Description
RGBA32F_EXT 0x8814 RGBA 32-bit floating-point color-renderable format.
RGB32F_EXT 0x8815 RGB 32-bit floating-point color-renderable format.
FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT 0x8211  
UNSIGNED_NORMALIZED_EXT 0x8C17  

EXT_blend_minmax

Constant name Value Description
MIN_EXT 0x8007 Produces the minimum color components of the source and destination colors.
MAX_EXT 0x8008 Produces the maximum color components of the source and destination colors.

EXT_sRGB

Constant name Value Description
SRGB_EXT 0x8C40 Unsized sRGB format that leaves the precision up to the driver.
SRGB_ALPHA_EXT 0x8C42 Unsized sRGB format with unsized alpha component.
SRGB8_ALPHA8_EXT 0x8C43 Sized (8-bit) sRGB and alpha formats.
FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT 0x8210 Returns the framebuffer color encoding.

OES_standard_derivatives

Constant name Value Description
FRAGMENT_SHADER_DERIVATIVE_HINT_OES 0x8B8B Indicates the accuracy of the derivative calculation for the GLSL built-in functions: dFdx, dFdy, and fwidth.

WEBGL_draw_buffers

Constant name Value Description
COLOR_ATTACHMENT0_WEBGL 0x8CE0 Framebuffer color attachment point
COLOR_ATTACHMENT1_WEBGL 0x8CE1 Framebuffer color attachment point
COLOR_ATTACHMENT2_WEBGL 0x8CE2 Framebuffer color attachment point
COLOR_ATTACHMENT3_WEBGL 0x8CE3 Framebuffer color attachment point
COLOR_ATTACHMENT4_WEBGL 0x8CE4 Framebuffer color attachment point
COLOR_ATTACHMENT5_WEBGL 0x8CE5 Framebuffer color attachment point
COLOR_ATTACHMENT6_WEBGL 0x8CE6 Framebuffer color attachment point
COLOR_ATTACHMENT7_WEBGL 0x8CE7 Framebuffer color attachment point
COLOR_ATTACHMENT8_WEBGL 0x8CE8 Framebuffer color attachment point
COLOR_ATTACHMENT9_WEBGL 0x8CE9 Framebuffer color attachment point
COLOR_ATTACHMENT10_WEBGL 0x8CEA Framebuffer color attachment point
COLOR_ATTACHMENT11_WEBGL 0x8CEB Framebuffer color attachment point
COLOR_ATTACHMENT12_WEBGL 0x8CEC Framebuffer color attachment point
COLOR_ATTACHMENT13_WEBGL 0x8CED Framebuffer color attachment point
COLOR_ATTACHMENT14_WEBGL 0x8CEE Framebuffer color attachment point
COLOR_ATTACHMENT15_WEBGL 0x8CEF Framebuffer color attachment point
DRAW_BUFFER0_WEBGL 0x8825 Draw buffer
DRAW_BUFFER1_WEBGL 0x8826 Draw buffer
DRAW_BUFFER2_WEBGL 0x8827 Draw buffer
DRAW_BUFFER3_WEBGL 0x8828 Draw buffer
DRAW_BUFFER4_WEBGL 0x8829 Draw buffer
DRAW_BUFFER5_WEBGL 0x882A Draw buffer
DRAW_BUFFER6_WEBGL 0x882B Draw buffer
DRAW_BUFFER7_WEBGL 0x882C Draw buffer
DRAW_BUFFER8_WEBGL 0x882D Draw buffer
DRAW_BUFFER9_WEBGL 0x882E Draw buffer
DRAW_BUFFER10_WEBGL 0x882F Draw buffer
DRAW_BUFFER11_WEBGL 0x8830 Draw buffer
DRAW_BUFFER12_WEBGL 0x8831 Draw buffer
DRAW_BUFFER13_WEBGL 0x8832 Draw buffer
DRAW_BUFFER14_WEBGL 0x8833 Draw buffer
DRAW_BUFFER15_WEBGL 0x8834 Draw buffer
MAX_COLOR_ATTACHMENTS_WEBGL 0x8CDF Maximum number of framebuffer color attachment points
MAX_DRAW_BUFFERS_WEBGL 0x8824 Maximum number of draw buffers

OES_vertex_array_object

Constant name Value Description
VERTEX_ARRAY_BINDING_OES 0x85B5 The bound vertex array object (VAO).

EXT_disjoint_timer_query

Constant name Value Description
QUERY_COUNTER_BITS_EXT 0x8864 The number of bits used to hold the query result for the given target.
CURRENT_QUERY_EXT 0x8865 The currently active query.
QUERY_RESULT_EXT 0x8866 The query result.
QUERY_RESULT_AVAILABLE_EXT 0x8867 A Boolean indicating whether or not a query result is available.
TIME_ELAPSED_EXT 0x88BF Elapsed time (in nanoseconds).
TIMESTAMP_EXT 0x8E28 The current time.
GPU_DISJOINT_EXT 0x8FBB A Boolean indicating whether or not the GPU performed any disjoint operation.

Specifications

Specification Status Comment
WebGL 1.0
The definition of 'WebGLRenderingContext' in that specification.
Recommendation Initial definition
WebGL 2.0
The definition of 'WebGL2RenderingContext' in that specification.
Editor's Draft Defines additional constants.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 9 4.0 (2.0) 11 12 5.1
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? 25 (Yes) ? 12 8.1

See also

Document Tags and Contributors

 Contributors to this page: AtiX, fscholz, Sebastianz
 Last updated by: AtiX,