WebGLRenderingContext: blendColor() method

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

See also