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drawArraysInstancedANGLE

The ANGLE_instanced_arrays.drawArraysInstancedANGLE() method of the WebGL API renders primitives from array data like the gl.drawArrays() method. In addition, it can execute multiple instances of the range of elements.

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

Syntax

void ext.drawArraysInstancedANGLE(mode, first, count, primcount);

Parameters

mode
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.TRIANGLE_STRIP
  • gl.TRIANGLE_FAN
  • gl.TRIANGLES: Draws a triangle for a group of three vertices.
first
A GLint specifying the starting index in the array of vector points.
count
A GLsizei specifying the number of indices to be rendered.
primcount
A GLsizei specifying the number of instances of the range of elements to execute.

Return value

None.

Exceptions

  • If mode is not one of the accepted values, a gl.INVALID_ENUM error is thrown.
  • If first, count or primcount are negative, a gl.INVALID_VALUE error is thrown.
  • if gl.CURRENT_PROGRAM is null, a gl.INVALID_OPERATION error is thrown.

Examples

var ext = gl.getExtension('ANGLE_instanced_arrays');
ext.drawArraysInstancedANGLE(gl.POINTS, 0, 8, 4);

Specifications

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

Browser compatibility

Feature Chrome Edge Firefox Internet Explorer Opera Safari Servo
Basic Support ? ? 33.0 11 ? ? ?
Feature Android Chrome for Android Edge Mobile Firefox for Android IE Mobile Opera Mobile Safari Mobile
Basic Support ? ? ? ? ? ? ?

See also

© 2005–2017 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/ANGLE_instanced_arrays/drawArraysInstancedANGLE