WebGL2RenderingContext: readBuffer() method

Note: This feature is available in Web Workers.

The WebGL2RenderingContext.readBuffer() method of the WebGL 2 API selects a color buffer as the source for pixels for subsequent calls to copyTexImage2D, copyTexSubImage2D, copyTexSubImage3D or readPixels.

Syntax

js
readBuffer(source)

Parameters

source

A GLenum specifying a color buffer. Possible values:

gl.BACK

Reads from the back color buffer.

gl.NONE

Reads from no color buffer.

gl.COLOR_ATTACHMENT{0-15}

Reads from one of the 16 color attachment buffers.

Return value

None (undefined).

Examples

js
gl.readBuffer(gl.COLOR_ATTACHMENT0);

Specifications

See also