EXT sRGB

The 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 in the WebGL tutorial.

Constants

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

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).

Examples

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, 521, 0, 
              ext.SRGB_EXT, gl.UNSIGNED_BYTE, image);  

Specifications

Specification	Status	Comment
EXT_sRGB The definition of 'EXT_sRGB' in that specification.	Recommendation	Initial definition.

Browser compatibility

See also

• WebGLRenderingContext.getExtension()
• WebGLRenderingContext.texImage2D()
• WebGLRenderingContext.texSubImage2D()
• WebGLRenderingContext.renderbufferStorage()
• WebGLRenderingContext.getFramebufferAttachmentParameter()