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Check the Browser compatibility table carefully before using this in production.

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


void gl.clearBufferfv(buffer, drawbuffer, values, optional srcOffset); 
void gl.clearBufferiv(buffer, drawbuffer, values, optional srcOffset); 
void gl.clearBufferuiv(buffer, drawbuffer, values, optional srcOffset); 
void gl.clearBufferfi(buffer, drawbuffer, depth, stencil);


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).
A GLint specifying the draw buffer to clear.
An Array of GLintGLuint or GLfloat values or
an Int32Array, Uint32Array or Float32Array specifying the values to clear to.
A GLfloat specifying the value to clear a depth render buffer to.
A GLint specifying the value to clear the stencil render buffer to.

Return value



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);


Specification Status Comment
WebGL 2.0
The definition of 'clearBuffer[fiuv]()' in that specification.
Editor's Draft Initial definition for WebGL.
OpenGL ES 3.0
The definition of 'glClearBuffer' in that specification.
Standard Man page of the (similar) OpenGL API.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic supportChrome Full support 56Edge No support NoFirefox Full support 51IE No support NoOpera Full support 43Safari No support NoWebView Android Full support 58Chrome Android Full support 58Edge Mobile No support NoFirefox Android Full support 51Opera Android Full support 43Safari iOS No support NoSamsung Internet Android Full support 7.0
SharedArrayBuffer as a parameterChrome Full support 60Edge ? Firefox ? IE ? Opera Full support 47Safari ? WebView Android Full support 60Chrome Android Full support 60Edge Mobile ? Firefox Android ? Opera Android Full support 47Safari iOS ? Samsung Internet Android No support No


Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown

See also

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