Class Attrib

An object-oriented representation of an attribute in a GLSL shader program.

Implements

ContextProgramConsumer

Index

Constructors

Accessors

Methods

config contextFree contextGain contextLost disable enable getOffset toString

Constructors

constructor

new Attrib(contextManager, info): Attrib
Parameters
- contextManager: ContextManager
- info: WebGLActiveInfo
Returns Attrib
- Defined in src/lib/core/Attrib.ts:34

Accessors

index

get index(): number
Returns the cached index obtained by calling getAttribLocation on the WebGLRenderingContext.

Returns number
- Defined in src/lib/core/Attrib.ts:42
set index(unused): void
Parameters
- unused: number
Returns void
- Defined in src/lib/core/Attrib.ts:45

Methods

config

config(size, type, normalized?, stride?, offset?): void
Specifies the data formats and locations of vertex attributes in a vertex attributes array. Calls the vertexAttribPointer method on the underlying WebGLRenderingContext using the cached attribute index and the supplied parameters. Note that the type parameter is hard-code to FLOAT.
Parameters
- size: number
  The number of components per attribute. Must be 1, 2, 3, or 4.
- type: DataType
  The data type of each component in the array.
- normalized: boolean = false
  Specifies whether fixed-point data values should be normalized (true), or are converted to fixed point vales (false) when accessed.
- stride: number = 0
  The distance in bytes between the beginning of consecutive vertex attributes.
- offset: number = 0
  The offset in bytes of the first component in the vertex attribute array. Must be a multiple of type.
Returns void
- Defined in src/lib/core/Attrib.ts:94

contextFree

contextFree(): void
Notifies this Attrib of a browser free WebGL context event. This Attrib responds by setting its cached index and context to undefined.

Returns void
Implementation of ContextProgramConsumer.contextFree
- Defined in src/lib/core/Attrib.ts:53

contextGain

contextGain(context, program): void
Notifies this Attrib of a browser gain WebGL context event. This Attrib responds by obtaining and caching attribute index.
Parameters
- context: WebGL2RenderingContext | WebGLRenderingContext
- program: WebGLProgram
Returns void
Implementation of ContextProgramConsumer.contextGain
- Defined in src/lib/core/Attrib.ts:67

contextLost

contextLost(): void
Notifies this Attrib of a browser lost WebGL context event. This Attrib responds by setting its cached index and context to undefined.

Returns void
Implementation of ContextProgramConsumer.contextLost
- Defined in src/lib/core/Attrib.ts:76

disable

disable(): void
Calls the disableVertexAttribArray method on the underlying WebGLRenderingContext using the cached attribute index.

Returns void
- Defined in src/lib/core/Attrib.ts:127

enable

enable(): void
Calls the enableVertexAttribArray method on the underlying WebGLRenderingContext using the cached attribute index.

Returns void
- Defined in src/lib/core/Attrib.ts:112

getOffset

getOffset(): number
Returns the address of the specified vertex attribute. Experimental.

Returns number
- Defined in src/lib/core/Attrib.ts:141

toString

toString(): string
Returns a non-normative string representation of the GLSL attribute.

Returns string
- Defined in src/lib/core/Attrib.ts:156