RenderingContext

js.html.webgl.RenderingContext (extern class) → WebGL2RenderingContext

The WebGLRenderingContext interface provides the OpenGL ES 2.0 rendering context for the drawing surface of an HTML canvas element.

Documentation WebGLRenderingContext by Mozilla Contributors, licensed under CC-BY-SA 2.5.

See:

Static Members

DEPTH_BUFFER_BIT: Int
STENCIL_BUFFER_BIT: Int
COLOR_BUFFER_BIT: Int
POINTS: Int
LINES: Int
LINE_LOOP: Int
LINE_STRIP: Int
TRIANGLES: Int
TRIANGLE_STRIP: Int
TRIANGLE_FAN: Int
ZERO: Int
ONE: Int
SRC_COLOR: Int
ONE_MINUS_SRC_COLOR: Int
SRC_ALPHA: Int
ONE_MINUS_SRC_ALPHA: Int
DST_ALPHA: Int
ONE_MINUS_DST_ALPHA: Int
DST_COLOR: Int
ONE_MINUS_DST_COLOR: Int
SRC_ALPHA_SATURATE: Int
FUNC_ADD: Int
BLEND_EQUATION: Int
BLEND_EQUATION_RGB: Int
BLEND_EQUATION_ALPHA: Int
FUNC_SUBTRACT: Int
FUNC_REVERSE_SUBTRACT: Int
BLEND_DST_RGB: Int
BLEND_SRC_RGB: Int
BLEND_DST_ALPHA: Int
BLEND_SRC_ALPHA: Int
CONSTANT_COLOR: Int
ONE_MINUS_CONSTANT_COLOR: Int
CONSTANT_ALPHA: Int
ONE_MINUS_CONSTANT_ALPHA: Int
BLEND_COLOR: Int
ARRAY_BUFFER: Int
ELEMENT_ARRAY_BUFFER: Int
ARRAY_BUFFER_BINDING: Int
ELEMENT_ARRAY_BUFFER_BINDING: Int
STREAM_DRAW: Int
STATIC_DRAW: Int
DYNAMIC_DRAW: Int
BUFFER_SIZE: Int
BUFFER_USAGE: Int
CURRENT_VERTEX_ATTRIB: Int
FRONT: Int
BACK: Int
FRONT_AND_BACK: Int
CULL_FACE: Int
BLEND: Int
DITHER: Int
STENCIL_TEST: Int
DEPTH_TEST: Int
SCISSOR_TEST: Int
POLYGON_OFFSET_FILL: Int
SAMPLE_ALPHA_TO_COVERAGE: Int
SAMPLE_COVERAGE: Int
NO_ERROR: Int
INVALID_ENUM: Int
INVALID_VALUE: Int
INVALID_OPERATION: Int
OUT_OF_MEMORY: Int
CW: Int
CCW: Int
LINE_WIDTH: Int
ALIASED_POINT_SIZE_RANGE: Int
ALIASED_LINE_WIDTH_RANGE: Int
CULL_FACE_MODE: Int
FRONT_FACE: Int
DEPTH_RANGE: Int
DEPTH_WRITEMASK: Int
DEPTH_CLEAR_VALUE: Int
DEPTH_FUNC: Int
STENCIL_CLEAR_VALUE: Int
STENCIL_FUNC: Int
STENCIL_FAIL: Int
STENCIL_PASS_DEPTH_FAIL: Int
STENCIL_PASS_DEPTH_PASS: Int
STENCIL_REF: Int
STENCIL_VALUE_MASK: Int
STENCIL_WRITEMASK: Int
STENCIL_BACK_FUNC: Int
STENCIL_BACK_FAIL: Int
STENCIL_BACK_PASS_DEPTH_FAIL: Int
STENCIL_BACK_PASS_DEPTH_PASS: Int
STENCIL_BACK_REF: Int
STENCIL_BACK_VALUE_MASK: Int
STENCIL_BACK_WRITEMASK: Int
VIEWPORT: Int
SCISSOR_BOX: Int
COLOR_CLEAR_VALUE: Int
COLOR_WRITEMASK: Int
UNPACK_ALIGNMENT: Int
PACK_ALIGNMENT: Int
MAX_TEXTURE_SIZE: Int
MAX_VIEWPORT_DIMS: Int
SUBPIXEL_BITS: Int
RED_BITS: Int
GREEN_BITS: Int
BLUE_BITS: Int
ALPHA_BITS: Int
DEPTH_BITS: Int
STENCIL_BITS: Int
POLYGON_OFFSET_UNITS: Int
POLYGON_OFFSET_FACTOR: Int
TEXTURE_BINDING_2D: Int
SAMPLE_BUFFERS: Int
SAMPLES: Int
SAMPLE_COVERAGE_VALUE: Int
SAMPLE_COVERAGE_INVERT: Int
COMPRESSED_TEXTURE_FORMATS: Int
DONT_CARE: Int
FASTEST: Int
NICEST: Int
GENERATE_MIPMAP_HINT: Int
BYTE: Int
UNSIGNED_BYTE: Int
SHORT: Int
UNSIGNED_SHORT: Int
INT: Int
UNSIGNED_INT: Int
FLOAT: Int
DEPTH_COMPONENT: Int
ALPHA: Int
RGB: Int
RGBA: Int
LUMINANCE: Int
LUMINANCE_ALPHA: Int
UNSIGNED_SHORT_4_4_4_4: Int
UNSIGNED_SHORT_5_5_5_1: Int
UNSIGNED_SHORT_5_6_5: Int
FRAGMENT_SHADER: Int
VERTEX_SHADER: Int
MAX_VERTEX_ATTRIBS: Int
MAX_VERTEX_UNIFORM_VECTORS: Int
MAX_VARYING_VECTORS: Int
MAX_COMBINED_TEXTURE_IMAGE_UNITS: Int
MAX_VERTEX_TEXTURE_IMAGE_UNITS: Int
MAX_TEXTURE_IMAGE_UNITS: Int
MAX_FRAGMENT_UNIFORM_VECTORS: Int
SHADER_TYPE: Int
DELETE_STATUS: Int
VALIDATE_STATUS: Int
ATTACHED_SHADERS: Int
ACTIVE_UNIFORMS: Int
ACTIVE_ATTRIBUTES: Int
SHADING_LANGUAGE_VERSION: Int
CURRENT_PROGRAM: Int
NEVER: Int
LESS: Int
EQUAL: Int
LEQUAL: Int
GREATER: Int
NOTEQUAL: Int
GEQUAL: Int
ALWAYS: Int
KEEP: Int
REPLACE: Int
INCR: Int
DECR: Int
INVERT: Int
INCR_WRAP: Int
DECR_WRAP: Int
VENDOR: Int
RENDERER: Int
VERSION: Int
NEAREST: Int
LINEAR: Int
NEAREST_MIPMAP_NEAREST: Int
LINEAR_MIPMAP_NEAREST: Int
NEAREST_MIPMAP_LINEAR: Int
LINEAR_MIPMAP_LINEAR: Int
TEXTURE_MAG_FILTER: Int
TEXTURE_MIN_FILTER: Int
TEXTURE_WRAP_S: Int
TEXTURE_WRAP_T: Int
TEXTURE_2D: Int
TEXTURE: Int
TEXTURE_CUBE_MAP: Int
TEXTURE_BINDING_CUBE_MAP: Int
TEXTURE_CUBE_MAP_POSITIVE_X: Int
TEXTURE_CUBE_MAP_NEGATIVE_X: Int
TEXTURE_CUBE_MAP_POSITIVE_Y: Int
TEXTURE_CUBE_MAP_NEGATIVE_Y: Int
TEXTURE_CUBE_MAP_POSITIVE_Z: Int
TEXTURE_CUBE_MAP_NEGATIVE_Z: Int
MAX_CUBE_MAP_TEXTURE_SIZE: Int
TEXTURE0: Int
TEXTURE1: Int
TEXTURE2: Int
TEXTURE3: Int
TEXTURE4: Int
TEXTURE5: Int
TEXTURE6: Int
TEXTURE7: Int
TEXTURE8: Int
TEXTURE9: Int
TEXTURE10: Int
TEXTURE11: Int
TEXTURE12: Int
TEXTURE13: Int
TEXTURE14: Int
TEXTURE15: Int
TEXTURE16: Int
TEXTURE17: Int
TEXTURE18: Int
TEXTURE19: Int
TEXTURE20: Int
TEXTURE21: Int
TEXTURE22: Int
TEXTURE23: Int
TEXTURE24: Int
TEXTURE25: Int
TEXTURE26: Int
TEXTURE27: Int
TEXTURE28: Int
TEXTURE29: Int
TEXTURE30: Int
TEXTURE31: Int
ACTIVE_TEXTURE: Int
REPEAT: Int
CLAMP_TO_EDGE: Int
MIRRORED_REPEAT: Int
FLOAT_VEC2: Int
FLOAT_VEC3: Int
FLOAT_VEC4: Int
INT_VEC2: Int
INT_VEC3: Int
INT_VEC4: Int
BOOL: Int
BOOL_VEC2: Int
BOOL_VEC3: Int
BOOL_VEC4: Int
FLOAT_MAT2: Int
FLOAT_MAT3: Int
FLOAT_MAT4: Int
SAMPLER_2D: Int
SAMPLER_CUBE: Int
VERTEX_ATTRIB_ARRAY_ENABLED: Int
VERTEX_ATTRIB_ARRAY_SIZE: Int
VERTEX_ATTRIB_ARRAY_STRIDE: Int
VERTEX_ATTRIB_ARRAY_TYPE: Int
VERTEX_ATTRIB_ARRAY_NORMALIZED: Int
VERTEX_ATTRIB_ARRAY_POINTER: Int
VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: Int
IMPLEMENTATION_COLOR_READ_TYPE: Int
IMPLEMENTATION_COLOR_READ_FORMAT: Int
COMPILE_STATUS: Int
LOW_FLOAT: Int
MEDIUM_FLOAT: Int
HIGH_FLOAT: Int
LOW_INT: Int
MEDIUM_INT: Int
HIGH_INT: Int
FRAMEBUFFER: Int
RENDERBUFFER: Int
RGBA4: Int
RGB5_A1: Int
RGB565: Int
DEPTH_COMPONENT16: Int
STENCIL_INDEX8: Int
DEPTH_STENCIL: Int
RENDERBUFFER_WIDTH: Int
RENDERBUFFER_HEIGHT: Int
RENDERBUFFER_INTERNAL_FORMAT: Int
RENDERBUFFER_RED_SIZE: Int
RENDERBUFFER_GREEN_SIZE: Int
RENDERBUFFER_BLUE_SIZE: Int
RENDERBUFFER_ALPHA_SIZE: Int
RENDERBUFFER_DEPTH_SIZE: Int
RENDERBUFFER_STENCIL_SIZE: Int
FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE: Int
FRAMEBUFFER_ATTACHMENT_OBJECT_NAME: Int
FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL: Int
FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE: Int
COLOR_ATTACHMENT0: Int
DEPTH_ATTACHMENT: Int
STENCIL_ATTACHMENT: Int
DEPTH_STENCIL_ATTACHMENT: Int
NONE: Int
FRAMEBUFFER_COMPLETE: Int
FRAMEBUFFER_INCOMPLETE_ATTACHMENT: Int
FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: Int
FRAMEBUFFER_INCOMPLETE_DIMENSIONS: Int
FRAMEBUFFER_UNSUPPORTED: Int
FRAMEBUFFER_BINDING: Int
RENDERBUFFER_BINDING: Int
MAX_RENDERBUFFER_SIZE: Int
INVALID_FRAMEBUFFER_OPERATION: Int
UNPACK_FLIP_Y_WEBGL: Int
UNPACK_PREMULTIPLY_ALPHA_WEBGL: Int
CONTEXT_LOST_WEBGL: Int
UNPACK_COLORSPACE_CONVERSION_WEBGL: Int
BROWSER_DEFAULT_WEBGL: Int

Instance Members

A read-only back-reference to the HTMLCanvasElement. Might be null if it is not associated with a canvas element.

drawingBufferWidth: Int

The read-only width of the current drawing buffer. Should match the width of the canvas element associated with this context.

drawingBufferHeight: Int

The read-only height of the current drawing buffer. Should match the height of the canvas element associated with this context.

bufferData(target: Int, data: js.lib.ArrayBufferView, usage: Int): Void

Updates buffer data.

Name Type
target Int
data js.lib.ArrayBufferView
usage Int
bufferSubData(target: Int, offset: Int, data: js.lib.ArrayBufferView): Void

Updates buffer data starting at a passed offset.

Name Type
target Int
offset Int
data js.lib.ArrayBufferView
compressedTexImage2D(target: Int, level: Int, internalformat: Int, width: Int, height: Int, border: Int, data: js.lib.ArrayBufferView): Void

Specifies a 2D texture image in a compressed format.

Name Type
target Int
level Int
internalformat Int
width Int
height Int
border Int
data js.lib.ArrayBufferView
compressedTexSubImage2D(target: Int, level: Int, xoffset: Int, yoffset: Int, width: Int, height: Int, format: Int, data: js.lib.ArrayBufferView): Void

Specifies a 2D texture sub-image in a compressed format.

Name Type
target Int
level Int
xoffset Int
yoffset Int
width Int
height Int
format Int
data js.lib.ArrayBufferView
readPixels(x: Int, y: Int, width: Int, height: Int, format: Int, type: Int, pixels: js.lib.ArrayBufferView): Void

Reads a block of pixels from the WebGLFrameBuffer.

Name Type
x Int
y Int
width Int
height Int
format Int
type Int
pixels js.lib.ArrayBufferView
texImage2D(target: Int, level: Int, internalformat: Int, format: Int, type: Int, video: js.html.VideoElement): Void

Specifies a 2D texture image.

Name Type
target Int
level Int
internalformat Int
format Int
type Int
video js.html.VideoElement
texSubImage2D(target: Int, level: Int, xoffset: Int, yoffset: Int, format: Int, type: Int, video: js.html.VideoElement): Void

Updates a sub-rectangle of the current WebGLTexture.

Name Type
target Int
level Int
xoffset Int
yoffset Int
format Int
type Int
video js.html.VideoElement
uniform1fv(location: UniformLocation, data: js.lib.Float32Array): Void
Name Type
location UniformLocation
data js.lib.Float32Array
uniform2fv(location: UniformLocation, data: js.lib.Float32Array): Void
Name Type
location UniformLocation
data js.lib.Float32Array
uniform3fv(location: UniformLocation, data: js.lib.Float32Array): Void
Name Type
location UniformLocation
data js.lib.Float32Array
uniform4fv(location: UniformLocation, data: js.lib.Float32Array): Void
Name Type
location UniformLocation
data js.lib.Float32Array
uniform1iv(location: UniformLocation, data: js.lib.Int32Array): Void
Name Type
location UniformLocation
data js.lib.Int32Array
uniform2iv(location: UniformLocation, data: js.lib.Int32Array): Void
Name Type
location UniformLocation
data js.lib.Int32Array
uniform3iv(location: UniformLocation, data: js.lib.Int32Array): Void
Name Type
location UniformLocation
data js.lib.Int32Array
uniform4iv(location: UniformLocation, data: js.lib.Int32Array): Void
Name Type
location UniformLocation
data js.lib.Int32Array
uniformMatrix2fv(location: UniformLocation, transpose: Bool, data: js.lib.Float32Array): Void
Name Type
location UniformLocation
transpose Bool
data js.lib.Float32Array
uniformMatrix3fv(location: UniformLocation, transpose: Bool, data: js.lib.Float32Array): Void
Name Type
location UniformLocation
transpose Bool
data js.lib.Float32Array
uniformMatrix4fv(location: UniformLocation, transpose: Bool, data: js.lib.Float32Array): Void
Name Type
location UniformLocation
transpose Bool
data js.lib.Float32Array
getContextAttributes(): ContextAttributes

Returns a WebGLContextAttributes object that contains the actual context parameters. Might return null, if the context is lost.

Returns
ContextAttributes
isContextLost(): Bool

Returns true if the context is lost, otherwise returns false.

Returns
Bool
getSupportedExtensions(): Array<String>

Returns an Array of DOMString elements with all the supported WebGL extensions.

Returns
Array<String>
getExtension(name: Extension<getExtension.T>): getExtension.T

Returns an extension object.

Name Type
name Extension<getExtension.T>
Returns
getExtension.T
activeTexture(texture: Int): Void

Selects the active texture unit.

Name Type
texture Int
attachShader(program: Program, shader: Shader): Void

Attaches a WebGLShader to a WebGLProgram.

Name Type
program Program
shader Shader
bindAttribLocation(program: Program, index: Int, name: String): Void

Binds a generic vertex index to a named attribute variable.

Name Type
program Program
index Int
name String
bindBuffer(target: Int, buffer: Buffer): Void

Binds a WebGLBuffer object to a given target.

Name Type
target Int
buffer Buffer
bindFramebuffer(target: Int, framebuffer: Framebuffer): Void

Binds a WebGLFrameBuffer object to a given target.

Name Type
target Int
framebuffer Framebuffer
bindRenderbuffer(target: Int, renderbuffer: Renderbuffer): Void

Binds a WebGLRenderBuffer object to a given target.

Name Type
target Int
renderbuffer Renderbuffer
bindTexture(target: Int, texture: Texture): Void

Binds a WebGLTexture object to a given target.

Name Type
target Int
texture Texture
blendColor(red: Float, green: Float, blue: Float, alpha: Float): Void

Sets the source and destination blending factors.

Name Type
red Float
green Float
blue Float
alpha Float
blendEquation(mode: Int): Void

Sets both the RGB blend equation and alpha blend equation to a single equation.

Name Type
mode Int
blendEquationSeparate(modeRGB: Int, modeAlpha: Int): Void

Sets the RGB blend equation and alpha blend equation separately.

Name Type
modeRGB Int
modeAlpha Int
blendFunc(sfactor: Int, dfactor: Int): Void

Defines which function is used for blending pixel arithmetic.

Name Type
sfactor Int
dfactor Int
blendFuncSeparate(srcRGB: Int, dstRGB: Int, srcAlpha: Int, dstAlpha: Int): Void

Defines which function is used for blending pixel arithmetic for RGB and alpha components separately.

Name Type
srcRGB Int
dstRGB Int
srcAlpha Int
dstAlpha Int
checkFramebufferStatus(target: Int): Int

Returns the status of the framebuffer.

Name Type
target Int
Returns
Int
clear(mask: Int): Void

Clears specified buffers to preset values.

Name Type
mask Int
clearColor(red: Float, green: Float, blue: Float, alpha: Float): Void

Specifies the color values used when clearing color buffers.

Name Type
red Float
green Float
blue Float
alpha Float
clearDepth(depth: Float): Void

Specifies the depth value used when clearing the depth buffer.

Name Type
depth Float
clearStencil(s: Int): Void

Specifies the stencil value used when clearing the stencil buffer.

Name Type
s Int
colorMask(red: Bool, green: Bool, blue: Bool, alpha: Bool): Void

Sets which color components to enable or to disable when drawing or rendering to a WebGLFramebuffer.

Name Type
red Bool
green Bool
blue Bool
alpha Bool
compileShader(shader: Shader): Void

Compiles a WebGLShader.

Name Type
shader Shader
copyTexImage2D(target: Int, level: Int, internalformat: Int, x: Int, y: Int, width: Int, height: Int, border: Int): Void

Copies a 2D texture image.

Name Type
target Int
level Int
internalformat Int
x Int
y Int
width Int
height Int
border Int
copyTexSubImage2D(target: Int, level: Int, xoffset: Int, yoffset: Int, x: Int, y: Int, width: Int, height: Int): Void

Copies a 2D texture sub-image.

Name Type
target Int
level Int
xoffset Int
yoffset Int
x Int
y Int
width Int
height Int
createBuffer(): Buffer

Creates a WebGLBuffer object.

Returns
Buffer
createFramebuffer(): Framebuffer

Creates a WebGLFrameBuffer object.

Returns
Framebuffer
createProgram(): Program

Creates a WebGLProgram.

Returns
Program
createRenderbuffer(): Renderbuffer

Creates a WebGLRenderBuffer object.

Returns
Renderbuffer
createShader(type: Int): Shader

Creates a WebGLShader.

Name Type
type Int
Returns
Shader
createTexture(): Texture

Creates a WebGLTexture object.

Returns
Texture
cullFace(mode: Int): Void

Specifies whether or not front- and/or back-facing polygons can be culled.

Name Type
mode Int
deleteBuffer(buffer: Buffer): Void

Deletes a WebGLBuffer object.

Name Type
buffer Buffer
deleteFramebuffer(framebuffer: Framebuffer): Void

Deletes a WebGLFrameBuffer object.

Name Type
framebuffer Framebuffer
deleteProgram(program: Program): Void

Deletes a WebGLProgram.

Name Type
program Program
deleteRenderbuffer(renderbuffer: Renderbuffer): Void

Deletes a WebGLRenderBuffer object.

Name Type
renderbuffer Renderbuffer
deleteShader(shader: Shader): Void

Deletes a WebGLShader.

Name Type
shader Shader
deleteTexture(texture: Texture): Void

Deletes a WebGLTexture object.

Name Type
texture Texture
depthFunc(func: Int): Void

Specifies a function that compares incoming pixel depth to the current depth buffer value.

Name Type
func Int
depthMask(flag: Bool): Void

Sets whether writing into the depth buffer is enabled or disabled.

Name Type
flag Bool
depthRange(zNear: Float, zFar: Float): Void

Specifies the depth range mapping from normalized device coordinates to window or viewport coordinates.

Name Type
zNear Float
zFar Float
detachShader(program: Program, shader: Shader): Void

Detaches a WebGLShader.

Name Type
program Program
shader Shader
disable(cap: Int): Void

Disables specific WebGL capabilities for this context.

Name Type
cap Int
disableVertexAttribArray(index: Int): Void

Disables a vertex attribute array at a given position.

Name Type
index Int
drawArrays(mode: Int, first: Int, count: Int): Void

Renders primitives from array data.

Name Type
mode Int
first Int
count Int
drawElements(mode: Int, count: Int, type: Int, offset: Int): Void

Renders primitives from element array data.

Name Type
mode Int
count Int
type Int
offset Int
enable(cap: Int): Void

Enables specific WebGL capabilities for this context.

Name Type
cap Int
enableVertexAttribArray(index: Int): Void

Enables a vertex attribute array at a given position.

Name Type
index Int
finish(): Void

Blocks execution until all previously called commands are finished.

flush(): Void

Empties different buffer commands, causing all commands to be executed as quickly as possible.

framebufferRenderbuffer(target: Int, attachment: Int, renderbuffertarget: Int, renderbuffer: Renderbuffer): Void

Attaches a WebGLRenderingBuffer object to a WebGLFrameBuffer object.

Name Type
target Int
attachment Int
renderbuffertarget Int
renderbuffer Renderbuffer
framebufferTexture2D(target: Int, attachment: Int, textarget: Int, texture: Texture, level: Int): Void

Attaches a textures image to a WebGLFrameBuffer object.

Name Type
target Int
attachment Int
textarget Int
texture Texture
level Int
frontFace(mode: Int): Void

Specifies whether polygons are front- or back-facing by setting a winding orientation.

Name Type
mode Int
generateMipmap(target: Int): Void

Generates a set of mipmaps for a WebGLTexture object.

Name Type
target Int
getActiveAttrib(program: Program, index: Int): ActiveInfo

Returns information about an active attribute variable.

Name Type
program Program
index Int
Returns
ActiveInfo
getActiveUniform(program: Program, index: Int): ActiveInfo

Returns information about an active uniform variable.

Name Type
program Program
index Int
Returns
ActiveInfo
getAttachedShaders(program: Program): Array<Shader>

Returns a list of WebGLShader objects attached to a WebGLProgram.

Name Type
program Program
Returns
Array<Shader>
getAttribLocation(program: Program, name: String): Int

Returns the location of an attribute variable.

Name Type
program Program
name String
Returns
Int
getBufferParameter(target: Int, pname: Int): Dynamic

Returns information about the buffer.

Name Type
target Int
pname Int
Returns
Dynamic
getParameter(pname: Int): Dynamic

Returns a value for the passed parameter name.

Name Type
pname Int
Returns
Dynamic
getError(): Int

Returns error information.

Returns
Int
getFramebufferAttachmentParameter(target: Int, attachment: Int, pname: Int): Dynamic

Returns information about the framebuffer.

Name Type
target Int
attachment Int
pname Int
Returns
Dynamic
getProgramParameter(program: Program, pname: Int): Dynamic

Returns information about the program.

Name Type
program Program
pname Int
Returns
Dynamic
getProgramInfoLog(program: Program): String

Returns the information log for a WebGLProgram object.

Name Type
program Program
Returns
String
getRenderbufferParameter(target: Int, pname: Int): Dynamic

Returns information about the renderbuffer.

Name Type
target Int
pname Int
Returns
Dynamic
getShaderParameter(shader: Shader, pname: Int): Dynamic

Returns information about the shader.

Name Type
shader Shader
pname Int
Returns
Dynamic
getShaderPrecisionFormat(shadertype: Int, precisiontype: Int): ShaderPrecisionFormat

Returns a WebGLShaderPrecisionFormat object describing the precision for the numeric format of the shader.

Name Type
shadertype Int
precisiontype Int
Returns
ShaderPrecisionFormat
getShaderInfoLog(shader: Shader): String

Returns the information log for a WebGLShader object.

Name Type
shader Shader
Returns
String
getShaderSource(shader: Shader): String

Returns the source code of a WebGLShader as a string.

Name Type
shader Shader
Returns
String
getTexParameter(target: Int, pname: Int): Dynamic

Returns information about the texture.

Name Type
target Int
pname Int
Returns
Dynamic
getUniform(program: Program, location: UniformLocation): Dynamic

Returns the value of a uniform variable at a given location.

Name Type
program Program
location UniformLocation
Returns
Dynamic
getUniformLocation(program: Program, name: String): UniformLocation

Returns the location of a uniform variable.

Name Type
program Program
name String
Returns
UniformLocation
getVertexAttrib(index: Int, pname: Int): Dynamic

Returns information about a vertex attribute at a given position.

Name Type
index Int
pname Int
Returns
Dynamic
getVertexAttribOffset(index: Int, pname: Int): Int

Returns the address of a given vertex attribute.

Name Type
index Int
pname Int
Returns
Int
hint(target: Int, mode: Int): Void

Specifies hints for certain behaviors. The interpretation of these hints depend on the implementation.

Name Type
target Int
mode Int
isBuffer(buffer: Buffer): Bool

Returns a Boolean indicating if the passed buffer is valid.

Name Type
buffer Buffer
Returns
Bool
isEnabled(cap: Int): Bool

Tests whether a specific WebGL capability is enabled or not for this context.

Name Type
cap Int
Returns
Bool
isFramebuffer(framebuffer: Framebuffer): Bool

Returns a Boolean indicating if the passed WebGLFrameBuffer object is valid.

Name Type
framebuffer Framebuffer
Returns
Bool
isProgram(program: Program): Bool

Returns a Boolean indicating if the passed WebGLProgram is valid.

Name Type
program Program
Returns
Bool
isRenderbuffer(renderbuffer: Renderbuffer): Bool

Returns a Boolean indicating if the passed WebGLRenderingBuffer is valid.

Name Type
renderbuffer Renderbuffer
Returns
Bool
isShader(shader: Shader): Bool

Returns a Boolean indicating if the passed WebGLShader is valid.

Name Type
shader Shader
Returns
Bool
isTexture(texture: Texture): Bool

Returns a Boolean indicating if the passed WebGLTexture is valid.

Name Type
texture Texture
Returns
Bool
lineWidth(width: Float): Void

Sets the line width of rasterized lines.

Name Type
width Float
linkProgram(program: Program): Void

Links the passed WebGLProgram object.

Name Type
program Program
pixelStorei(pname: Int, param: Int): Void

Specifies the pixel storage modes

Name Type
pname Int
param Int
polygonOffset(factor: Float, units: Float): Void

Specifies the scale factors and units to calculate depth values.

Name Type
factor Float
units Float
renderbufferStorage(target: Int, internalformat: Int, width: Int, height: Int): Void

Creates a renderbuffer data store.

Name Type
target Int
internalformat Int
width Int
height Int
sampleCoverage(value: Float, invert: Bool): Void

Specifies multi-sample coverage parameters for anti-aliasing effects.

Name Type
value Float
invert Bool
scissor(x: Int, y: Int, width: Int, height: Int): Void

Defines the scissor box.

Name Type
x Int
y Int
width Int
height Int
shaderSource(shader: Shader, source: String): Void

Sets the source code in a WebGLShader.

Name Type
shader Shader
source String
stencilFunc(func: Int, ref: Int, mask: Int): Void

Sets the both front and back function and reference value for stencil testing.

Name Type
func Int
ref Int
mask Int
stencilFuncSeparate(face: Int, func: Int, ref: Int, mask: Int): Void

Sets the front and/or back function and reference value for stencil testing.

Name Type
face Int
func Int
ref Int
mask Int
stencilMask(mask: Int): Void

Controls enabling and disabling of both the front and back writing of individual bits in the stencil planes.

Name Type
mask Int
stencilMaskSeparate(face: Int, mask: Int): Void

Controls enabling and disabling of front and/or back writing of individual bits in the stencil planes.

Name Type
face Int
mask Int
stencilOp(fail: Int, zfail: Int, zpass: Int): Void

Sets both the front and back-facing stencil test actions.

Name Type
fail Int
zfail Int
zpass Int
stencilOpSeparate(face: Int, fail: Int, zfail: Int, zpass: Int): Void

Sets the front and/or back-facing stencil test actions.

Name Type
face Int
fail Int
zfail Int
zpass Int
texParameterf(target: Int, pname: Int, param: Float): Void
Name Type
target Int
pname Int
param Float
texParameteri(target: Int, pname: Int, param: Int): Void
Name Type
target Int
pname Int
param Int
uniform1f(location: UniformLocation, x: Float): Void
Name Type
location UniformLocation
x Float
uniform2f(location: UniformLocation, x: Float, y: Float): Void
Name Type
location UniformLocation
x Float
y Float
uniform3f(location: UniformLocation, x: Float, y: Float, z: Float): Void
Name Type
location UniformLocation
x Float
y Float
z Float
uniform4f(location: UniformLocation, x: Float, y: Float, z: Float, w: Float): Void
Name Type
location UniformLocation
x Float
y Float
z Float
w Float
uniform1i(location: UniformLocation, x: Int): Void
Name Type
location UniformLocation
x Int
uniform2i(location: UniformLocation, x: Int, y: Int): Void
Name Type
location UniformLocation
x Int
y Int
uniform3i(location: UniformLocation, x: Int, y: Int, z: Int): Void
Name Type
location UniformLocation
x Int
y Int
z Int
uniform4i(location: UniformLocation, x: Int, y: Int, z: Int, w: Int): Void
Name Type
location UniformLocation
x Int
y Int
z Int
w Int
useProgram(program: Program): Void

Uses the specified WebGLProgram as part the current rendering state.

Name Type
program Program
validateProgram(program: Program): Void

Validates a WebGLProgram.

Name Type
program Program
vertexAttrib1f(indx: Int, x: Float): Void
Name Type
indx Int
x Float
vertexAttrib1fv(indx: Int, values: js.lib.Float32Array): Void
Name Type
indx Int
values js.lib.Float32Array
vertexAttrib2f(indx: Int, x: Float, y: Float): Void
Name Type
indx Int
x Float
y Float
vertexAttrib2fv(indx: Int, values: js.lib.Float32Array): Void
Name Type
indx Int
values js.lib.Float32Array
vertexAttrib3f(indx: Int, x: Float, y: Float, z: Float): Void
Name Type
indx Int
x Float
y Float
z Float
vertexAttrib3fv(indx: Int, values: js.lib.Float32Array): Void
Name Type
indx Int
values js.lib.Float32Array
vertexAttrib4f(indx: Int, x: Float, y: Float, z: Float, w: Float): Void
Name Type
indx Int
x Float
y Float
z Float
w Float
vertexAttrib4fv(indx: Int, values: js.lib.Float32Array): Void
Name Type
indx Int
values js.lib.Float32Array
vertexAttribPointer(indx: Int, size: Int, type: Int, normalized: Bool, stride: Int, offset: Int): Void

Specifies the data formats and locations of vertex attributes in a vertex attributes array.

Name Type
indx Int
size Int
type Int
normalized Bool
stride Int
offset Int
viewport(x: Int, y: Int, width: Int, height: Int): Void

Sets the viewport.

Name Type
x Int
y Int
width Int
height Int