缓冲区属性使用常量([name])

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。

代码示例


		const geometry = new THREE.BufferGeometry();
		const positionAttribute = new THREE.BufferAttribute( array, 3 , false );
		positionAttribute.setUsage( THREE.DynamicDrawUsage );
		geometry.setAttribute( 'position', positionAttribute );

例子

[example:webgl_buffergeometry_drawrange materials / buffergeometry / drawrange ]

几何体相关(Geometry Usage)


		THREE.StaticDrawUsage
		THREE.DynamicDrawUsage
		THREE.StreamDrawUsage

		THREE.StaticReadUsage
		THREE.DynamicReadUsage
		THREE.StreamReadUsage

		THREE.StaticCopyUsage
		THREE.DynamicCopyUsage
		THREE.StreamCopyUsage

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]。

源代码

[link:https://github.com/mrdoob/three.js/blob/master/src/constants.js src/constants.js]