WebGLRenderingContext: blendColor() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Note: This feature is available in Web Workers.

The WebGLRenderingContext.blendColor() method of the WebGL API is used to set the source and destination blending factors.

Syntax

js
blendColor(red, green, blue, alpha)

Parameters

red

A GLclampf for the red component in the range of 0 to 1. Default value is 0.

green

A GLclampf for the green component in the range of 0 to 1. Default value is 0.

blue

A GLclampf for the blue component in the range of 0 to 1. Default value is 0.

alpha

A GLclampf for the alpha component (transparency) in the range of 0. to 1. Default value is 0.

Return value

None (undefined).

Examples

To set the blend color, use:

js
gl.blendColor(0, 0.5, 1, 1);

To get the blend color, query the BLEND_COLOR constant which returns a Float32Array.

js
gl.getParameter(gl.BLEND_COLOR);
// Float32Array[0, 0.5, 1, 1]

Specifications

Specification
WebGL Specification
# 5.14.3

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
blendColor

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also