WebGLRenderingContext: blendColor() method
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
GLclampffor the red component in the range of 0 to 1. Default value is 0. green-
A
GLclampffor the green component in the range of 0 to 1. Default value is 0. blue-
A
GLclampffor the blue component in the range of 0 to 1. Default value is 0. alpha-
A
GLclampffor 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
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