The WebGL2RenderingContext.renderbufferStorageMultisample() method of the WebGL 2 API returns creates and initializes a renderbuffer object's data store and allows specifying a number of samples to be used.
The WebGL2RenderingContext.texStorage3D() method of the WebGL API specifies all levels of a three-dimensional texture or two-dimensional array texture.
The WebGL2RenderingContext.vertexAttribDivisor() method of the WebGL 2 API modifies the rate at which generic vertex attributes advance when rendering multiple instances of primitives with gl.drawArraysInstanced() and gl.drawElementsInstanced().
The WebGL2RenderingContext.vertexAttribIPointer() method of the WebGL 2 API specifies integer data formats and locations of vertex attributes in a vertex attributes array.
The WebGL2RenderingContext.waitSync() method of the WebGL 2 API returns immediately, but waits on the GL server until the given WebGLSync object is signaled.