WebGLTransformFeedback

{{APIRef("WebGL")}} {{AvailableInWorkers}} 

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.

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When working with WebGLTransformFeedback objects, the following methods of the {{domxref("WebGL2RenderingContext")}}  are useful:

• {{domxref("WebGL2RenderingContext.createTransformFeedback()")}} 
• {{domxref("WebGL2RenderingContext.deleteTransformFeedback()")}} 
• {{domxref("WebGL2RenderingContext.isTransformFeedback()")}} 
• {{domxref("WebGL2RenderingContext.bindTransformFeedback()")}} 
• {{domxref("WebGL2RenderingContext.beginTransformFeedback()")}} 
• {{domxref("WebGL2RenderingContext.endTransformFeedback()")}} 
• {{domxref("WebGL2RenderingContext.pauseTransformFeedback()")}} 
• {{domxref("WebGL2RenderingContext.resumeTransformFeedback()")}} 
• {{domxref("WebGL2RenderingContext.transformFeedbackVaryings()")}} 
• {{domxref("WebGL2RenderingContext.getTransformFeedbackVarying()")}} 

Examples

Creating a WebGLTransformFeedback object

in this example, gl must be a {{domxref("WebGL2RenderingContext")}} . WebGLTransformFeedback objects are not available in WebGL 1.

const transformFeedback = gl.createTransformFeedback();

Specifications

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Browser compatibility

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