WEBGL_compressed_texture_astc - Web APIs 编辑

The WEBGL_compressed_texture_astc extension is part of the WebGL API and exposes Adaptive Scalable Texture Compression (ASTC) compressed texture formats to WebGL.

For more information, see the article Using ASTC Texture Compression for Game Assets by nvidia.

WebGL extensions are available using the WebGLRenderingContext.getExtension() method. For more information, see also Using Extensions in the WebGL tutorial.

Availability: ASTC compression is typically available on Mali ARM GPUs, Intel GPUs, and Nividia Tegra chips.

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

Methods

This extension exposes one new methods.

ext.getSupportedProfiles()

Returns an array of strings containing the names of the ASTC profiles supported by the implementation.

Constants

The compressed texture formats are exposed by 28 constants and can be used in two functions: compressedTexImage2D() and compressedTexSubImage2D().

Examples

var ext = gl.getExtension('WEBGL_compressed_texture_astc');

var texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);

gl.compressedTexImage2D(gl.TEXTURE_2D, 0, ext.COMPRESSED_RGBA_ASTC_12x12_KHR, 512, 512, 0, textureData);

Specifications

Browser compatibility

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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.

See also

• Using ASTC Texture Compression for Game Assets
• WebGLRenderingContext.getExtension()
• WebGLRenderingContext.compressedTexImage2D()
• WebGLRenderingContext.compressedTexSubImage2D()
• WebGLRenderingContext.getParameter()