Web/API/WebGLRenderingContext/drawArrays

The WebGLRenderingContext.drawArrays() method of the WebGL API renders primitives from array data.

Syntax

void gl.drawArrays(mode, first, count);

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.

Return value

None.

Exceptions

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

Examples

gl.drawArrays(gl.POINTS, 0, 8);

Specifications

Specification	Status	Comment
WebGL 1.0The definition of 'drawArrays' in that specification.	Recommendation	Initial definition.
OpenGL ES 2.0The definition of 'glDrawArrays' in that specification.	Standard	Man page of the OpenGL API.

Browser compatibility

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`drawArrays`	Chrome Full support 9	Edge Full support 12	Firefox Full support 4	IE Full support 11	Opera Full support 12	Safari Full support 5.1	WebView Android Full support Yes	Chrome Android Full support 25	Firefox Android Full support Yes	Opera Android Full support 12	Safari iOS Full support 8	Samsung Internet Android Full support 1.5

Legend

Full support: Full support