WEBGL_compressed_texture_etc1

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 WebGL tutorial .

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

常量

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() 方法)。

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

范例

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);
					

规范

规范 状态 Comment
WEBGL_compressed_texture_etc1
The definition of 'WEBGL_compressed_texture_etc1' in that specification.
草案 初始定义。

浏览器兼容性

更新 GitHub 上的兼容性数据
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 Yes Edge 79 Firefox 30 IE ? Opera Yes Safari ? WebView Android Yes Chrome Android Yes Firefox Android ? Opera Android Yes Safari iOS ? Samsung Internet Android Yes

图例

完整支持
完整支持
兼容性未知
兼容性未知

另请参阅