WebGL2RenderingContext.beginTransformFeedback()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2021年9月.
WebGL 2 API 的 WebGL2RenderingContext.beginTransformFeedback() 方法开始一个变换回传（Transform Feedback）操作。
语法
void gl.beginTransformFeedback(primitiveMode);
参数
primitiveMode-
A
GLenumspecifying the output type of the primitives that will be recorded into the buffer objects that are bound for transform feedback. 可能的值：gl.POINTSgl.LINESgl.TRIANGLES
返回值
无。
示例
js
var transformFeedback = gl.createTransformFeedback();
gl.bindTransformFeedback(gl.TRANSFORM_FEEDBACK, transformFeedback);
gl.beginTransformFeedback(gl.TRIANGLES);
gl.drawArrays(gl.TRIANGLES, 0, 3);
规范
| Specification |
|---|
| WebGL 2.0 Specification # 3.7.15 |
浏览器兼容性
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