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This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The WebGLTransformFeedback interface is part of the WebGL 2 API and enables transform feedback, which is the process of capturing primitives generated by vertex processing. It allows to preserve the post-transform rendering state of an object and resubmit this data multiple times.
When working with WebGLTransformFeedback objects, the following methods of the WebGL2RenderingContext are useful:
WebGL2RenderingContext.createTransformFeedback()WebGL2RenderingContext.deleteTransformFeedback()WebGL2RenderingContext.isTransformFeedback()WebGL2RenderingContext.bindTransformFeedback()WebGL2RenderingContext.beginTransformFeedback()WebGL2RenderingContext.endTransformFeedback()WebGL2RenderingContext.pauseTransformFeedback()WebGL2RenderingContext.resumeTransformFeedback()WebGL2RenderingContext.transformFeedbackVaryings()WebGL2RenderingContext.getTransformFeedbackVarying()
)window.location='https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/basic-image.png'){kind=link}
)window.location='https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/alt-text.png'){kind=link}
)window.location='https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/alt-text-with-width-height.png'){kind=link}
)window.location='https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/image-with-title.png'){kind=link}
Examples
Creating a WebGLTransformFeedback object
in this example, gl must be a WebGL2RenderingContext. WebGLTransformFeedback objects are not available in WebGL 1.
var transformFeedback = gl.createTransformFeedback();
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebGL 2.0 The definition of 'WebGLTransformFeedback' in that specification. |
Editor's Draft | Initial definition. |
Browser compatibility
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.
| Feature | Chrome | Firefox | Edge | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic Support | 56 | 51.0 | (No) | (No) | 43 | (No) |
| Feature | Android | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
|---|---|---|---|---|---|---|---|
| Basic Support | (No) | (No) | (No) | (No) | (No) | (No) | (No) |