WebGLRenderingContext.generateMipmap()

The WebGLRenderingContext.generateMipmap() method of the WebGL API generates a set of mipmaps for a WebGLTexture object.

Mipmaps are used to create distance with objects. A higher-resolution mipmap is used for objects that are closer, and a lower-resolution mipmap is used for objects that are farther away. It starts with the resolution of the texture image and halves the resolution until a 1x1 dimension texture image is created.

Syntax

void gl.generateMipmap(target);

Parameters

target
A GLenum specifying the binding point (target) of the active texture whose mipmaps will be generated. Possible values:
  • gl.TEXTURE_2D: A two-dimensional texture.
  • gl.TEXTURE_CUBE_MAP: A cube-mapped texture.
  • When using a WebGL 2 context, the following values are available additionally:
    • gl.TEXTURE_3D: A three-dimensional texture.
    • gl.TEXTURE_2D_ARRAY: A two-dimensional array texture.

Return value

None.

Examples

gl.generateMipmap(gl.TEXTURE_2D);

Specifications

Specification Status Comment
WebGL 1.0
The definition of 'generateMipmap' in that specification.
Recommendation Initial definition for WebGL.
OpenGL ES 2.0
The definition of 'glGenerateMipmap' in that specification.
Standard Man page of the (similar) OpenGL ES 2.0 API.
OpenGL ES 3.0
The definition of 'glGenerateMipmap' in that specification.
Standard Man page of the (similar) OpenGL ES 3.0 API.
Adds: gl.TEXTURE_3D and gl.TEXTURE_2D_ARRAY

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic supportChrome Full support 9Edge Full support 12Firefox Full support 4IE Full support 11Opera Full support 12Safari Full support 5.1WebView Android Full support YesChrome Android Full support 25Edge Mobile Full support YesFirefox Android Full support YesOpera Android Full support 12Safari iOS Full support 8.1Samsung Internet Android Full support Yes
WebGL2Chrome 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

Legend

Full support  
Full support
No support  
No support

See also

Document Tags and Contributors

Contributors to this page: fscholz, teoli, dmotz
Last updated by: fscholz,