WEBGL_compressed_texture_etc1 扩展属于 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 使用扩展 WebGL 教程 .

可用性: This extension is available to both, WebGL1 and WebGL2 上下文。

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 注释
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
桌面 移动
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

元数据

  • 最后修改: