WebGLRenderingContext: colorMask() method

The WebGLRenderingContext.colorMask() method of the WebGL API sets which color components to enable or to disable when drawing or rendering to a WebGLFramebuffer.

Syntax

js
colorMask(red, green, blue, alpha)

Parameters

red

A GLboolean specifying whether or not the red color component can be written into the frame buffer. Default value: true.

green

A GLboolean specifying whether or not the green color component can be written into the frame buffer. Default value: true.

blue

A GLboolean specifying whether or not the blue color component can be written into the frame buffer. Default value: true.

alpha

A GLboolean specifying whether or not the alpha (transparency) component can be written into the frame buffer. Default value: true.

Return value

None (undefined).

Examples

js
gl.colorMask(true, true, true, false);

To get the current color mask, query the COLOR_WRITEMASK constant which returns an Array.

js
gl.getParameter(gl.COLOR_WRITEMASK);
// [true, true, true, false]

Specifications

Specification
WebGL Specification
# 5.14.3

Browser compatibility

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See also