EXT_sRGB 扩展属于 WebGL API and adds sRGB support to textures and framebuffer objects.

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 only available to WebGL1 contexts. In WebGL2 , the functionality of this extension is available on the WebGL2 context by default. The constants in WebGL2 are: gl.SRGB , gl.SRGB8 , gl.SRGB8_ALPHA8 and gl.FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING .

常量

This extension exposes the following constants, which can be used in the texImage2D() , texSubImage2D() , renderbufferStorage() and getFramebufferAttachmentParameter() 方法。

ext.SRGB_EXT

Unsized sRGB format that leaves the precision up to the driver.

ext.SRGB_ALPHA_EXT

Unsized sRGB format with unsized alpha component.

ext.SRGB8_ALPHA8_EXT

Sized (8-bit) sRGB and alpha formats.

ext.FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT
Returns the framebuffer color encoding ( gl.LINEAR or ext.SRGB_EXT ).

范例

var ext = gl.getExtension('EXT_sRGB');
var texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texImage2D(gl.TEXTURE_2D, 0, ext.SRGB_EXT, 512, 512, 0,
              ext.SRGB_EXT, gl.UNSIGNED_BYTE, image);
					

规范

规范 状态 注释
EXT_sRGB
The definition of 'EXT_sRGB' in that specification.
推荐 初始定义。

浏览器兼容性

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Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
EXT_sRGB Chrome Yes Edge 79 Firefox 28 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

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