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The ANGLE_instanced_arrays.drawElementsInstancedANGLE() method of the WebGL API renders primitives from array data like the gl.drawElements() method. In addition, it can execute multiple instances of a set of elements.

Note: When using WebGL2, this method is available as gl.drawElementsInstanced() by default.


void ext.drawElementsInstancedANGLE(mode, count, type, offset, primcount);


A GLenum specifying the type primitive to render. Possible values are:
  • gl.POINTS: Draws a single dot.
  • gl.LINE_STRIP: Draws a straight line to the next vertex.
  • gl.LINE_LOOP: Draws a straight line to the next vertex, and connects the last vertex back to the first.
  • gl.LINES: Draws a line between a pair of vertices.
  • gl.TRIANGLES: Draws a triangle for a group of three vertices.
A GLsizei specifying the number of elements to be rendered.
A GLenum specifying the type of the values in the element array buffer. Possible values are:
A GLintptr specifying an offset in the element array buffer. Must be a valid multiple of the size of the given type.
A GLsizei specifying the number of instances of the set of elements to execute.

Return value



  • If mode is not one of the accepted values, a gl.INVALID_ENUM error is thrown.
  • If offset is a valid multiple of the size of the given type, a gl.INVALID_OPERATION error is thrown.
  • If count or primcount are negative, a gl.INVALID_VALUE error is thrown.


var ext = gl.getExtension('ANGLE_instanced_arrays');
ext.drawElementsInstancedANGLE(gl.POINTS, 2, gl.UNSIGNED_SHORT, 0, 4);


Specification Status Comment
The definition of 'ANGLE_instanced_arrays' in that specification.
Recommendation Initial definition.

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support ?123311 ? ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support ? ? ? ? ? ? ?

See also

Document Tags and Contributors

Contributors to this page: fscholz, nmve, teoli
Last updated by: fscholz,