WebGLRenderingContext.blendColor()
The WebGLRenderingContext.blendColor()
method of the WebGL API is used to set the source and destination blending factors.
Syntax
JavaScript
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<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
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gl.blendColor(0, 0.5, 1, 1);
To get the blend color, query the BLEND_COLOR
constant which returns a Float32Array
.
JavaScript
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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