WebGLRenderingContext.blendColor()

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

Syntax

void gl.blendColor(red, green, blue, alpha);

Parameters

red
A GLclampf for the red component in the range of 0 to 1.
green
A GLclampf for the green component in the range of 0 to 1.
blue
A GLclampf for the blue component in the range of 0 to 1.
alpha
A GLclampf for the alpha component (transparency) in the range of 0 to 1.

Return value

None.

Examples

To set the blend color, use:

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

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

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

Specifications

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

Browser compatibility

Feature Chrome Edge Firefox Internet Explorer Opera Safari Servo
Basic Support9124.011125.1No support
Feature Android Chrome for Android Edge Mobile Firefox for Android IE Mobile Opera Mobile Safari Mobile
Basic Support(Yes)25(Yes)4.0128.1

See also

Document Tags and Contributors

 Contributors to this page: teoli, fscholz
 Last updated by: teoli,