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WebGLRenderingContext: getActiveAttrib() method

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

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

Specification
WebGL Specification # 5.14.10

Browser compatibility