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

DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
blendColorChrome Full support 9Edge Full support 12Firefox Full support 4IE Full support 11Opera Full support 12Safari Full support 5.1WebView Android Full support YesChrome Android Full support 25Firefox Android Full support YesOpera Android Full support 12Safari iOS Full support 8Samsung Internet Android Full support 1.5

Legend

Full support
Full support

See also