Please note, this is a STATIC archive of website developer.mozilla.org from 03 Nov 2016, cach3.com does not collect or store any user information, there is no "phishing" involved.

WEBGL_compressed_texture_etc1

我们的志愿者还没有将这篇文章翻译为 中文 (简体)加入我们帮助完成翻译!

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_etc1
The definition of 'WEBGL_compressed_texture_etc1' in that specification.
Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support 30.0 (30.0) No support No support No support
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support No support ? No support No support No support

See also

文档标签和贡献者

 此页面的贡献者: fscholz
 最后编辑者: fscholz,