WebGL2RenderingContext: drawBuffers() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2021.

Note: This feature is available in Web Workers.

The WebGL2RenderingContext.drawBuffers() method of the WebGL 2 API defines draw buffers to which fragment colors are written into. The draw buffer settings are part of the state of the currently bound framebuffer or the drawing buffer if no framebuffer is bound.

Syntax

js
drawBuffers(buffers)

Parameters

buffers

An Array of GLenum specifying the buffers into which fragment colors will be written. Possible values are:

gl.NONE

Fragment shader output is not written into any color buffer.

gl.BACK

Fragment shader output is written into the back color buffer.

gl.COLOR_ATTACHMENT{0-15}

Fragment shader output is written in the nth color attachment of the current framebuffer.

Return value

None (undefined).

Exceptions

  • If buffers contains not one of the accepted values, a gl.INVALID_ENUM error is thrown.

Examples

js
gl.drawBuffers([gl.NONE, gl.COLOR_ATTACHMENT1]);

Specifications

Specification
WebGL 2.0 Specification
# 3.7.11

Browser compatibility

See also