WebGL2RenderingContext.getFragDataLocation()

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

The WebGL2RenderingContext.getFragDataLocation() method of the WebGL 2 API returns the binding of color numbers to user-defined varying out variables.

Syntax

GLint gl.getFragDataLocation(program, name);

Parameters

program
A WebGLProgram to query.
name
A DOMString specifying the name of the user-defined varying out variable.

Return value

A GLint indicating the assigned color number binding, or -1 otherwise.

Examples

// program is a linked WebGLProgram

gl.getFragDataLocation(program, 'fragColor');

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
getFragDataLocationChrome 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 58Firefox Android Full support 51Opera Android Full support 43Safari iOS No support NoSamsung Internet Android Full support 7.0

Legend

Full support  
Full support
No support  
No support

See also