WEBGL_compressed_texture_atc

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常量
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规范
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WEBGL_compressed_texture_atc 扩展属于 WebGL API and exposes 3 ATC compressed texture formats. ATC is a proprietary compression algorithm for compressing textures on handheld devices.

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 使用扩展在 WebGL 教程 .

可用性： ATC compression is typically available on mobile devices with Adreno GPUs , that are currently only built into Qualcomm Snapdragon 设备。

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

常量

The compressed texture formats are exposed by 3 constants and can be used in two functions: compressedTexImage2D() and compressedTexSubImage2D() .

ext.COMPRESSED_RGB_ATC_WEBGL
ext.COMPRESSED_RGBA_ATC_EXPLICIT_ALPHA_WEBGL
ext.COMPRESSED_RGBA_ATC_INTERPOLATED_ALPHA_WEBGL

范例

var ext = gl.getExtension('WEBGL_compressed_texture_atc');
var texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.compressedTexImage2D(gl.TEXTURE_2D, 0, ext.COMPRESSED_RGB_ATC_WEBGL, 512, 512, 0, textureData);

规范

规范	状态	注释
WEBGL_compressed_texture_atc The definition of 'WEBGL_compressed_texture_atc' 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_atc`	Chrome ? — 68	Edge No	Firefox 18 — 64 不支持 18 — 64 不支持 ? — 58 Prefixed Prefixed Implemented with the vendor prefix: MOZ_	IE ?	Opera ? — 55	Safari ?	WebView Android ? — 68	Chrome Android ? — 68	Firefox Android ?	Opera Android ? — 48	Safari iOS ?	Samsung Internet Android ? — 10.0

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常量

范例

规范

浏览器兼容性

图例

另请参阅

元数据

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