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three.js
의 미러 https://github.com/mrdoob/three.js.git


			
				
					
						
						
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		<h1>Buffer Attribute Usage Constants</h1>

		<p>
			사용 상수를 사용하여 성능을 최적화하기 위해 지오메트리 버퍼 속성을 사용하는 방법에 대한 힌트를 API에 제공할 수 있습니다.
		</p>

		<h2>코드 예제</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>예제</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>

		이러한 각 상수에 대한 자세한 내용은 [link:https://www.khronos.org/opengl/wiki/Buffer_Object#Buffer_Object_Usage this OpenGL documentation]를 참조하세요. 

		<h2>소스코드</h2>

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