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.
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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
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
- Ericsson Texture Compression – Wikipedia
WEBGL_compressed_texture_es3
(ETC2 and EAC)WebGLRenderingContext.getExtension()
WebGLRenderingContext.compressedTexImage2D()
WebGLRenderingContext.getParameter()
WEBGL_compressed_texture_etc1 by Mozilla Contributors is licensed under CC-BY-SA 2.5.