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- <h1>缓冲区属性使用常量([name])</h1>
- <p>
- 使用常量可用于向 API 提供有关如何使用几何缓冲区属性以优化性能的提示。
- </p>
- <h2>代码示例</h2>
- <code>
- const geometry = new THREE.BufferGeometry();
- const positionAttribute = new THREE.BufferAttribute( array, 3 , false );
- positionAttribute.setUsage( THREE.DynamicDrawUsage );
- geometry.setAttribute( 'position', positionAttribute );
- </code>
- <h2>例子</h2>
- <p>[example:webgl_buffergeometry_drawrange materials / buffergeometry / drawrange ]</p>
- <h2>几何体相关(Geometry Usage)</h2>
- <code>
- THREE.StaticDrawUsage
- THREE.DynamicDrawUsage
- THREE.StreamDrawUsage
- THREE.StaticReadUsage
- THREE.DynamicReadUsage
- THREE.StreamReadUsage
- THREE.StaticCopyUsage
- THREE.DynamicCopyUsage
- THREE.StreamCopyUsage
- </code>
- 有关每个常量的更多详细信息,请参阅
- [link:https://www.khronos.org/opengl/wiki/Buffer_Object#Buffer_Object_Usage OpenGL 文档]。
- <h2>源代码</h2>
- <p>
- [link:https://github.com/mrdoob/three.js/blob/master/src/constants.js src/constants.js]
- </p>
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