WebGLRenderingContext.blendColor()

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

Syntax

JavaScript
<var>void gl.</var>blendColor<var>(red, green, blue, alpha);</var>

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:

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

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

JavaScript
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 Firefox (Gecko) Internet Explorer Opera Safari
Basic support 9 4.0 (2.0) 11 12 5.1
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? 25 (Yes) ? 12 8.1

See also

License

© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/webglrenderingcontext/blendcolor

API Method Reference WebGL WebGLRenderingContext