As constantes de uso podem ser usadas para fornecer uma dica à API sobre como o atributo de buffer da geometria será usado para otimizar o desempenho.
const geometry = new THREE.BufferGeometry();
const positionAttribute = new THREE.BufferAttribute( array, 3 , false );
positionAttribute.setUsage( THREE.DynamicDrawUsage );
geometry.setAttribute( 'position', positionAttribute );
[example:webgl_buffergeometry_drawrange materials / buffergeometry / drawrange ]
THREE.StaticDrawUsage
THREE.DynamicDrawUsage
THREE.StreamDrawUsage
THREE.StaticReadUsage
THREE.DynamicReadUsage
THREE.StreamReadUsage
THREE.StaticCopyUsage
THREE.DynamicCopyUsage
THREE.StreamCopyUsage
Para obter informações mais detalhadas sobre cada uma dessas constantes, consulte a documentação [link:https://www.khronos.org/opengl/wiki/Buffer_Object#Buffer_Object_Usage OpenGL].
[link:https://github.com/mrdoob/three.js/blob/master/src/constants.js src/constants.js]