Enum Parameter

pub enum Parameter {
    BlendEquation = 32_777,
    BlendEquationAlpha = 34_877,
    BlendDstRgb = 32_968,
    BlendSrcRgb = 32_969,
    BlendDstAlpha = 32_970,
    BlendSrcAlpha = 32_971,
    BlendColor = 32_773,
    ArrayBufferBinding = 34_964,
    ElementArrayBufferBinding = 34_965,
    LineWidth = 2_849,
    AliasedPointSizeRange = 33_901,
    AliasedLineWidthRange = 33_902,
    CullFaceMode = 2_885,
    FrontFace = 2_886,
    DepthRange = 2_928,
    DepthWritemask = 2_930,
    DepthClearValue = 2_931,
    DepthFunc = 2_932,
    StencilClearValue = 2_961,
    StencilFunc = 2_962,
    StencilFail = 2_964,
    StencilPassDepthFail = 2_965,
    StencilPassDepthPass = 2_966,
    StencilRef = 2_967,
    StencilValueMask = 2_963,
    StencilWritemask = 2_968,
    StencilBackFunc = 34_816,
    StencilBackFail = 34_817,
    StencilBackPassDepthFail = 34_818,
    StencilBackPassDepthPass = 34_819,
    StencilBackRef = 36_003,
    StencilBackValueMask = 36_004,
    StencilBackWritemask = 36_005,
    Viewport = 2_978,
    ScissorBox = 3_088,
    ColorClearValue = 3_106,
    ColorWritemask = 3_107,
    UnpackAlignment = 3_317,
    PackAlignment = 3_333,
    MaxTextureSize = 3_379,
    MaxViewportDims = 3_386,
    SubpixelBits = 3_408,
    RedBits = 3_410,
    GreenBits = 3_411,
    BlueBits = 3_412,
    AlphaBits = 3_413,
    DepthBits = 3_414,
    StencilBits = 3_415,
    PolygonOffsetUnits = 10_752,
    PolygonOffsetFactor = 32_824,
    TextureBinding2d = 32_873,
    SampleBuffers = 32_936,
    Samples = 32_937,
    SampleCoverageValue = 32_938,
    SampleCoverageInvert = 32_939,
    CompressedTextureFormats = 34_467,
    Vendor = 7_936,
    Renderer = 7_937,
    Version = 7_938,
    ImplementationColorReadType = 35_738,
    ImplementationColorReadFormat = 35_739,
    BrowserDefaultWebgl = 37_444,
    TextureBindingCubeMap = 34_068,
    MaxCubeMapTextureSize = 34_076,
}

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

Variants

BlendEquation = 32_777

Passed to getParameter to get the current RGB blend function. same as BlendEquationRgb

BlendEquationAlpha = 34_877

Passed to getParameter to get the current alpha blend function. Same as BLEND_EQUATION

BlendDstRgb = 32_968

Passed to getParameter to get the current destination RGB blend function.

BlendSrcRgb = 32_969

Passed to getParameter to get the current destination RGB blend function.

BlendDstAlpha = 32_970

Passed to getParameter to get the current destination alpha blend function.

BlendSrcAlpha = 32_971

Passed to getParameter to get the current source alpha blend function.

BlendColor = 32_773

Passed to getParameter to return a the current blend color.

ArrayBufferBinding = 34_964

Passed to getParameter to get the array buffer binding.

ElementArrayBufferBinding = 34_965

Passed to getParameter to get the current element array buffer.

LineWidth = 2_849

Passed to getParameter to get the current lineWidth (set by the lineWidth method).

AliasedPointSizeRange = 33_901

Passed to getParameter to get the current size of a point drawn with gl.POINTS

AliasedLineWidthRange = 33_902

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.

CullFaceMode = 2_885

Passed to getParameter to get the current value of cullFace. Should return FRONT, BACK, or FRONT_AND_BACK

FrontFace = 2_886

Passed to getParameter to determine the current value of frontFace. Should return CW or CCW.

DepthRange = 2_928

Passed to getParameter to return a length-2 array of floats giving the current depth range.

DepthWritemask = 2_930

Passed to getParameter to determine if the depth write mask is enabled.

DepthClearValue = 2_931

Passed to getParameter to determine the current depth clear value.

DepthFunc = 2_932

Passed to getParameter to get the current depth function. Returns NEVER, ALWAYS, LESS, EQUAL, LEQUAL, GREATER, GEQUAL, or NOTEQUAL.

StencilClearValue = 2_961

Passed to getParameter to get the value the stencil will be cleared to.

StencilFunc = 2_962

Passed to getParameter to get the current stencil function. Returns NEVER, ALWAYS, LESS, EQUAL, LEQUAL, GREATER, GEQUAL, or NOTEQUAL.

StencilFail = 2_964

Passed to getParameter to get the current stencil fail function. Should return KEEP, REPLACE, INCR, DECR, INVERT, INCR_WRAP, or DECR_WRAP.

StencilPassDepthFail = 2_965

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.

StencilPassDepthPass = 2_966

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.

StencilRef = 2_967

Passed to getParameter to get the reference value used for stencil tests.

StencilValueMask = 2_963

StencilWritemask = 2_968

StencilBackFunc = 34_816

StencilBackFail = 34_817

StencilBackPassDepthFail = 34_818

StencilBackPassDepthPass = 34_819

StencilBackRef = 36_003

StencilBackValueMask = 36_004

StencilBackWritemask = 36_005

Viewport = 2_978

Returns an Int32Array with four elements for the current viewport dimensions.

ScissorBox = 3_088

Returns an Int32Array with four elements for the current scissor box dimensions.

ColorClearValue = 3_106

ColorWritemask = 3_107

UnpackAlignment = 3_317

PackAlignment = 3_333

MaxTextureSize = 3_379

MaxViewportDims = 3_386

SubpixelBits = 3_408

RedBits = 3_410

GreenBits = 3_411

BlueBits = 3_412

AlphaBits = 3_413

DepthBits = 3_414

StencilBits = 3_415

PolygonOffsetUnits = 10_752

PolygonOffsetFactor = 32_824

TextureBinding2d = 32_873

SampleBuffers = 32_936

Samples = 32_937

SampleCoverageValue = 32_938

SampleCoverageInvert = 32_939

CompressedTextureFormats = 34_467

Vendor = 7_936

Renderer = 7_937

Version = 7_938

ImplementationColorReadType = 35_738

ImplementationColorReadFormat = 35_739

BrowserDefaultWebgl = 37_444

TextureBindingCubeMap = 34_068

MaxCubeMapTextureSize = 34_076

Trait Implementations

impl Clone for Parameter

fn clone(&self) -> Parameter

Returns a duplicate of the value.

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Parameter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Parameter> for JsValue

fn from(value: Parameter) -> Self

Converts to this type from the input type.

impl FromWasmAbi for Parameter

type Abi = u32

The Wasm ABI type that this converts from when coming back out from the ABI boundary.

unsafe fn from_abi(js: u32) -> Self

Recover a Self from Self::Abi.

impl IntoWasmAbi for Parameter

type Abi = u32

The Wasm ABI type that this converts into when crossing the ABI boundary.

fn into_abi(self) -> u32

Convert self into Self::Abi so that it can be sent across the wasm ABI boundary.

impl OptionFromWasmAbi for Parameter

fn is_none(val: &Self::Abi) -> bool

Tests whether the argument is a “none” instance. If so it will be deserialized as None, and otherwise it will be passed to FromWasmAbi.

impl OptionIntoWasmAbi for Parameter

fn none() -> Self::Abi

Returns an ABI instance indicating “none”, which JS will interpret as the None branch of this option.

impl TryFromJsValue for Parameter

type Error = JsValue

The type returned in the event of a conversion error.

fn try_from_js_value( value: JsValue, ) -> Result<Self, <Parameter as TryFromJsValue>::Error>

Performs the conversion.

impl VectorFromWasmAbi for Parameter

type Abi = <Box<[JsValue]> as FromWasmAbi>::Abi

unsafe fn vector_from_abi(js: Self::Abi) -> Box<[Parameter]>

impl VectorIntoJsValue for Parameter

fn vector_into_jsvalue(vector: Box<[Parameter]>) -> JsValue

impl VectorIntoWasmAbi for Parameter

type Abi = <Box<[JsValue]> as IntoWasmAbi>::Abi

fn vector_into_abi(vector: Box<[Parameter]>) -> Self::Abi

impl WasmDescribe for Parameter

fn describe()

impl WasmDescribeVector for Parameter

fn describe_vector()

impl Copy for Parameter