Web/API/WebGLRenderingContext/depthFunc

The WebGLRenderingContext.depthFunc() method of the WebGL API specifies a function that compares incoming pixel depth to the current depth buffer value.

Syntax

void gl.depthFunc(func);

Parameters

func: A GLenum specifying the depth comparison function, which sets the conditions under which the pixel will be drawn. The default value is gl.LESS. Possible values are:

gl.NEVER (never pass) gl.LESS (pass if the incoming value is less than the depth buffer value) gl.EQUAL (pass if the incoming value equals the the depth buffer value) gl.LEQUAL (pass if the incoming value is less than or equal to the depth buffer value) gl.GREATER (pass if the incoming value is greater than the depth buffer value) gl.NOTEQUAL (pass if the incoming value is not equal to the depth buffer value) gl.GEQUAL (pass if the incoming value is greater than or equal to the depth buffer value) gl.ALWAYS (always pass)

Return value

None.

Examples

The depth testing is disabled by default. To enable or disable depth testing, use the enable() and disable() methods with the argument gl.DEPTH_TEST.

gl.enable(gl.DEPTH_TEST);
gl.depthFunc(gl.NEVER);

To check the current depth function, query the DEPTH_FUNC constant.

gl.getParameter(gl.DEPTH_FUNC) === gl.NEVER;
// true

Specifications

Specification	Status	Comment
WebGL 1.0The definition of 'depthFunc' in that specification.	Recommendation	Initial definition.
OpenGL ES 2.0The definition of 'glDepthFunc' 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
`depthFunc`	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