EXT_sRGB

EXT_sRGB extension is part of the 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 Using Extensions WebGL tutorial .

Availability: 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 Comment
EXT_sRGB
The definition of 'EXT_sRGB' in that specification.
Recommendation 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
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