TheWebGLRenderingContext.getVertexAttrib() method of theWebGL API returns information about a vertexattribute at a given position.

Syntax

getVertexAttrib(index, pname)

Parameters

index

AGLuint specifying the index of the vertex attribute.

pname

AGLenum specifying the information to query. Possible values:

gl.VERTEX_ATTRIB_ARRAY_BUFFER_BINDING

Returns the currently boundWebGLBuffer.

gl.VERTEX_ATTRIB_ARRAY_ENABLED

Returns aGLboolean that istrue if the vertex attribute is enabled at thisindex. Otherwisefalse.

gl.VERTEX_ATTRIB_ARRAY_SIZE

Returns aGLintindicating the size of an element of the vertex array.

gl.VERTEX_ATTRIB_ARRAY_STRIDE

Returns aGLintindicating the number of bytes between successive elements in the array. 0 meansthat the elements are sequential.

gl.VERTEX_ATTRIB_ARRAY_TYPE

Returns aGLenumrepresenting the array type. One of

• gl.BYTE
• gl.UNSIGNED_BYTE
• gl.SHORT,
• gl.UNSIGNED_SHORT
• gl.FLOAT

gl.VERTEX_ATTRIB_ARRAY_NORMALIZED

Returns aGLboolean that is true if fixed-point data types are normalized forthe vertex attribute array at the givenindex.

gl.CURRENT_VERTEX_ATTRIB

Returns aFloat32Array(with 4 elements) representing the current value of the vertex attribute at thegivenindex.

When using aWebGL 2 context,the following values are available additionally:

gl.VERTEX_ATTRIB_ARRAY_INTEGER

Returns aGLboolean indicating whether an integer data type is inthe vertex attribute array at the givenindex.

gl.VERTEX_ATTRIB_ARRAY_DIVISOR

Returns aGLintdescribing the frequency divisor used for instanced rendering.

When using theANGLE_instanced_arrays extension:

ext.VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE

Returns aGLint describing the frequency divisor used for instancedrendering.

Return value

Returns the requested vertex attribute information (as specified withpname).

Examples

gl.getVertexAttrib(0, gl.VERTEX_ATTRIB_ARRAY_BUFFER_BINDING);

Specifications

Browser compatibility

See also

• WebGLRenderingContext.getVertexAttribOffset()
• ANGLE_instanced_arrays