OES_vertex_array_object

The OES_vertex_array_object extension is part of the WebGL API and provides vertex array objects (VAOs) which encapsulate vertex array states. These objects keep pointers to vertex data and provide names for different sets of vertex data.

WebGL extensions are available using the WebGLRenderingContext.getExtension() method. For more information, see also Using Extensions in the WebGL tutorial.

Constants

This extension exposes one new constant, which can be used in the gl.getParameter() method:

ext.VERTEX_ARRAY_BINDING_OES

Returns a WebGLVertexArrayObjectOES object when used in the gl.getParameter() method as the pname parameter.

Interfaces

This extension exposes one new interface.

WebGLVertexArrayObjectOES

A vertex array object (VAO) pointing to vertex array data and providing names for different sets of vertex data.

Methods

This extension exposes four new methods.

ext.createVertexArrayOES()

Creates a new WebGLVertexArrayObjectOES.

ext.deleteVertexArrayOES()

Deletes a given WebGLVertexArrayObjectOES.

ext.isVertexArrayOES()

Returns true if a given object is a WebGLVertexArrayObjectOES.

ext.bindVertexArrayOES()

Binds a given WebGLVertexArrayObjectOES to the buffer.

Examples

var ext = gl.getExtension("OES_vertex_array_object");
var vao = ext.createVertexArrayOES();
ext.bindVertexArrayOES(vao);

// ...
// calls to bindBuffer or vertexAttribPointer 
// which will be "recorded" in the VAO
// ...

Specifications

Browser compatibility

See also

• WebGLRenderingContext.getExtension()
• WebGLRenderingContext.vertexAttribPointer()
• WebGL2 equivalents:
  • WebGLVertexArrayObject
  • WebGL2RenderingContext.createVertexArray()
  • WebGL2RenderingContext.deleteVertexArray()
  • WebGL2RenderingContext.isVertexArray()
  • WebGL2RenderingContext.bindVertexArray()