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
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
generateMipmap | Chrome Full support 9 | Edge Full support 12 | Firefox Full support 4 | IE Full support 11 | Opera Full support 12 | Safari Full support 5.1 | WebView Android Full support Yes | Chrome Android Full support 25 | Firefox Android Full support Yes | Opera Android Full support 12 | Safari iOS Full support 8 | Samsung Internet Android Full support 1.5 |
WebGL2 | Chrome Full support 56 | Edge Full support 79 | Firefox Full support 51 | IE No support No | Opera Full support 43 | Safari No support No | WebView Android Full support 58 | Chrome Android Full support 58 | Firefox Android Full support 51 | Opera Android Full support 43 | Safari iOS No support No | Samsung Internet Android Full support 7.0 |
Legend
- Full support
- Full support
- No support
- No support