WebGLRenderingContext: clearColor() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Note: This feature is available in Web Workers.
The WebGLRenderingContext.clearColor() method of the WebGL API specifies the color values used
when clearing color buffers.
This specifies what color values to use when calling the
clear() method. The values are clamped
between 0 and 1.
Syntax
clearColor(red, green, blue, alpha)
Parameters
red-
A
GLclampfspecifying the red color value used when the color buffers are cleared. Default value: 0. green-
A
GLclampfspecifying the green color value used when the color buffers are cleared. Default value: 0. blue-
A
GLclampfspecifying the blue color value used when the color buffers are cleared. Default value: 0. alpha-
A
GLclampfspecifying the alpha (transparency) value used when the color buffers are cleared. Default value: 0.
Return value
None (undefined).
Examples
gl.clearColor(1, 0.5, 0.5, 1);
To get the current clear color, query the COLOR_CLEAR_VALUE constant which
returns a Float32Array.
gl.getParameter(gl.COLOR_CLEAR_VALUE);
// Float32Array[1, 0.5, 0.5, 1]
Specifications
| Specification |
|---|
| WebGL Specification # 5.14.3 |
Browser compatibility
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