WebGLRenderingContext.clearColor()

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

void gl.clearColor(red, green, blue, alpha);

Parameters

red
A GLclampf specifying the red color value used when the color buffers are cleared. Default value: 0.
green
A GLclampf specifying the green color value used when the color buffers are cleared. Default value: 0.
blue
A GLclampf specifying the blue color value used when the color buffers are cleared. Default value: 0.
alpha
A GLclampf specifying the alpha (transparency) value used when the color buffers are cleared. Default value: 0.

Return value

None.

Examples

gl.clearColor(1, 0.5, 0.5, 3);

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 Status Comment
WebGL 1.0
The definition of 'clearColor' in that specification.
Recommendation Initial definition.
OpenGL ES 2.0
The definition of 'glClearColor' in that specification.
Standard Man page of the OpenGL API.

Browser compatibility

Feature Chrome Edge Firefox Internet Explorer Opera Safari Servo
Basic Support9124.011125.1No support
Feature Android Chrome for Android Edge Mobile Firefox for Android IE Mobile Opera Mobile Safari Mobile
Basic Support(Yes)25(Yes)4.0128.1

See also

Document Tags and Contributors

 Contributors to this page: teoli, fscholz
 Last updated by: teoli,