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 September 2021.

实验性: 这是一项实验性技术
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WebGL 2 APIWebGL2RenderingContext.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 GLenum specifying 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.POINTS
  • gl.LINES
  • gl.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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相关链接