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- <h1>Buffer Attribute Usage Constants</h1>
- <p>
- The usage constants can be used to provide a hint to the API regarding how
- the geometry buffer attribute will be used in order to optimize
- performance.
- </p>
- <h2>Code Example</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>Examples</h2>
- <p>[example:webgl_buffergeometry_drawrange materials / buffergeometry / drawrange ]</p>
- <h2>Geometry Usage</h2>
- <code>
- THREE.StaticDrawUsage
- THREE.DynamicDrawUsage
- THREE.StreamDrawUsage
-
- THREE.StaticReadUsage
- THREE.DynamicReadUsage
- THREE.StreamReadUsage
-
- THREE.StaticCopyUsage
- THREE.DynamicCopyUsage
- THREE.StreamCopyUsage
- </code>
- For more detailed information on each of these constants see
- [link:https://www.khronos.org/opengl/wiki/Buffer_Object#Buffer_Object_Usage this OpenGL documentation].
- <h2>Source</h2>
- <p>
- [link:https://github.com/mrdoob/three.js/blob/master/src/constants.js src/constants.js]
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