WebGL2RenderingContext: clearBuffer[fiuv]() 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.

* Some parts of this feature may have varying levels of support.

Note: This feature is available in Web Workers.

The WebGL2RenderingContext.clearBuffer[fiuv]() methods of the WebGL 2 API clear buffers from the currently bound framebuffer.

Syntax

js
clearBufferfv(buffer, drawbuffer, values)
clearBufferfv(buffer, drawbuffer, values, srcOffset)

clearBufferiv(buffer, drawbuffer, values)
clearBufferiv(buffer, drawbuffer, values, srcOffset)

clearBufferuiv(buffer, drawbuffer, values)
clearBufferuiv(buffer, drawbuffer, values, srcOffset)

clearBufferfi(buffer, drawbuffer, depth, stencil)

Parameters

buffer

A GLenum specifying the buffer to clear. Possible values are:

  • gl.COLOR: Color buffer.
  • gl.DEPTH: Depth buffer.
  • gl.STENCIL: Stencil buffer.
  • gl.DEPTH_STENCIL: clears depth and stencil buffers (used with clearBufferfi).
drawBuffer

A GLint specifying the draw buffer to clear.

values

An Array of GLint, GLuint or GLfloat values or an Int32Array, Uint32Array or Float32Array specifying the values to clear to.

depth

A GLfloat specifying the value to clear a depth render buffer to.

stencil

A GLint specifying the value to clear the stencil render buffer to.

Return value

None (undefined).

Examples

js
gl.clearBufferiv(gl.COLOR, 0, new Int32Array([r, g, b, a]));
gl.clearBufferuiv(gl.COLOR, 0, new Uint32Array([r, g, b, a]));
gl.clearBufferfv(gl.COLOR, 0, new Float32Array([r, g, b, a]));
gl.clearBufferfv(gl.COLOR, 0, [0.0, 0.0, 0.0, 0.0]);
gl.clearBufferfi(gl.DEPTH_STENCIL, 0, 1.0, 0);

Specifications

Specification
WebGL 2.0 Specification
# 3.7.11

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
clearBufferiv
values parameter accepts SharedArrayBuffer type

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support

See also