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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The WebGL2RenderingContext.drawElementsInstanced() method of the WebGL 2 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 WebGL 1, the ANGLE_instanced_arrays extension can provide this method, too.


void gl.drawElementsInstanced(mode, count, type, offset, instanceCount);


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 instanceCount are negative, a gl.INVALID_VALUE error is thrown.


gl.drawElementsInstanced(gl.POINTS, 2, gl.UNSIGNED_SHORT, 0, 4);


Specification Status Comment
WebGL 2.0
The definition of 'drawElementsInstanced' in that specification.
Editor's Draft Initial definition for WebGL.
OpenGL ES 3.0
The definition of 'glDrawElementsInstanced' in that specification.
Standard Man page of the (similar) OpenGL API.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
drawElementsInstancedChrome Full support 56Edge No support NoFirefox Full support 51IE No support NoOpera Full support 43Safari No support NoWebView Android Full support 58Chrome Android Full support 58Edge Mobile No support NoFirefox Android Full support 51Opera Android Full support 43Safari iOS No support NoSamsung Internet Android Full support 7.0


Full support  
Full support
No support  
No support

See also


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