Web/API/WEBGL compressed texture etc1

From Get docs


The WEBGL_compressed_texture_etc1 extension is part of the WebGL API and exposes the ETC1 compressed texture format.

Compressed textures reduce the amount of memory needed to store a texture on the GPU, allowing for higher resolution textures or more of the same resolution textures.

WebGL extensions are available using the WebGLRenderingContext.getExtension() method. For more information, see also Using Extensions in the WebGL tutorial.

Availability: This extension is available to both, WebGL1 and WebGL2 contexts.


Constants

The compressed texture format is exposed by a constant and can be used with the compressedTexImage2D() method (note that ETC1 is not supported with the compressedTexSubImage2D() method).

ext.COMPRESSED_RGB_ETC1_WEBGL
Compresses 24-bit RGB data with no alpha channel.

Examples

var ext = gl.getExtension('WEBGL_compressed_texture_etc1');

var texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);

gl.compressedTexImage2D(gl.TEXTURE_2D, 0, ext.COMPRESSED_RGB_ETC1_WEBGL, 512, 512, 0, textureData); 

Specifications

Specification Status Comment
WEBGL_compressed_texture_etc1The definition of 'WEBGL_compressed_texture_etc1' in that specification. Draft Initial definition.

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.

Update compatibility data on GitHub

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
WEBGL_compressed_texture_etc1 Chrome

Full support Yes

Edge

Full support 79

Firefox

Full support 30

IE

?

Opera

Full support Yes

Safari

?

WebView Android

Full support Yes

Chrome Android

Full support Yes

Firefox Android

?

Opera Android

Full support Yes

Safari iOS

?

Samsung Internet Android

Full support Yes

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown


See also