WebGLRenderingContext.getActiveAttrib()

The WebGLRenderingContext.getActiveAttrib() method of the WebGL API returns a WebGLActiveInfo object containing size, type, and name of a vertex attribute. It is generally used when querying unknown attributes either for debugging or generic library creation.

Syntax

WebGLActiveInfo gl.getActiveAttrib(program,index);

Parameters

program

A WebGLProgram containing the vertex attribute.

index

A GLuint specifying the index of the vertex attribute to get. This value is an index 0 to N - 1 as returned by gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES).

Return value

A WebGLActiveInfo object.

Examples

const numAttribs = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
for (let i = 0; i < numAttribs; ++i) {
  const info = gl.getActiveAttrib(program, i);
  console.log('name:', info.name, 'type:', info.type, 'size:', info.size);
}

Specifications

Browser compatibility

See also

• WebGLActiveInfo