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:
js
const canvas = document.getElementById("myCanvas");
const gl = canvas.getContext("webgl");
gl.getParameter(gl.LINE_WIDTH);
Some constants are also provided by WebGL extensions. A list is provided below.
js
const debugInfo = gl.getExtension("WEBGL_debug_renderer_info");
const 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, RGB 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, RGB and alpha, or separately).
| Constant name | Value | Description |
|---|---|---|
FUNC_ADD |
0x8006 |
Passed to blendEquation or
blendEquationSeparate to set an addition blend function.
|
FUNC_SUBTRACT |
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.
|
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.
The getParameter method then returns an array with two elements: the first element is the minimum width value and the second element is the maximum width value.
|
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 culled.
|
BACK |
0x0405 |
Passed to cullFace to specify that only back faces should
be culled.
|
FRONT_AND_BACK |
0x0408 |
Passed to cullFace to specify that front and back faces
should be culled.
|
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 getShaderParameter 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 getShaderParameter 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 getProgramParameter to get the number of uniforms
active in a program.
|
MAX_VERTEX_ATTRIBS |
0x8869 | The maximum number of entries possible in the vertex attribute list. |
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.
|
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.
|
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.
|
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.
|
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.
|
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_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 | |
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. |
For more information, see ANGLE_instanced_arrays.
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. |
For more information, see WEBGL_debug_renderer_info.
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. |
For more information, see EXT_texture_filter_anisotropic.
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. |
For more information, see WEBGL_compressed_texture_s3tc.
WEBGL_compressed_texture_etc
| 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 RGB8 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 sRGB8 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.
|
For more information, see WEBGL_compressed_texture_etc.
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 pixels. |
For more information, see WEBGL_compressed_texture_pvrtc.
WEBGL_compressed_texture_etc1
| Constant name | Value | Description |
|---|---|---|
COMPRESSED_RGB_ETC1_WEBGL |
0x8D64 | Compresses 24-bit RGB data with no alpha channel. |
For more information, see WEBGL_compressed_texture_etc1.
WEBGL_depth_texture
| Constant name | Value | Description |
|---|---|---|
UNSIGNED_INT_24_8_WEBGL |
0x84FA | Unsigned integer type for 24-bit depth texture data. |
For more information, see WEBGL_depth_texture.
OES_texture_half_float
| Constant name | Value | Description |
|---|---|---|
HALF_FLOAT_OES |
0x8D61 | Half floating-point type (16-bit). |
For more information, see OES_texture_half_float.
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 |
For more information, see WEBGL_color_buffer_float.
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. |
For more information, see EXT_blend_minmax.
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. |
For more information, see EXT_sRGB.
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.
|
For more information, see OES_standard_derivatives.
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 |
For more information, see WEBGL_draw_buffers.
OES_vertex_array_object
| Constant name | Value | Description |
|---|---|---|
VERTEX_ARRAY_BINDING_OES |
0x85B5 | The bound vertex array object (VAO). |
For more information, see OES_vertex_array_object.
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. |
For more information, see EXT_disjoint_timer_query.
Specifications
| Specification |
|---|
| WebGL # 5.14 |
| WebGL2 # 3.7 |