Function initGeometryGroups

viewer/js/three.js:21548–21603

( scene, object, geometry )

	}

	function initGeometryGroups( scene, object, geometry ) {

		var material = object.material, addBuffers = false;

		if ( geometryGroups[ geometry.id ] === undefined || geometry.groupsNeedUpdate === true ) {

			delete _webglObjects[ object.id ];

			geometryGroups[ geometry.id ] = makeGroups( geometry, material instanceof THREE.MeshFaceMaterial );

			geometry.groupsNeedUpdate = false;

		}

		var geometryGroupsList = geometryGroups[ geometry.id ];

		// create separate VBOs per geometry chunk

		for ( var i = 0, il = geometryGroupsList.length; i < il; i ++ ) {

			var geometryGroup = geometryGroupsList[ i ];

			// initialise VBO on the first access

			if ( geometryGroup.__webglVertexBuffer === undefined ) {

				createMeshBuffers( geometryGroup );
				initMeshBuffers( geometryGroup, object );

				geometry.verticesNeedUpdate = true;
				geometry.morphTargetsNeedUpdate = true;
				geometry.elementsNeedUpdate = true;
				geometry.uvsNeedUpdate = true;
				geometry.normalsNeedUpdate = true;
				geometry.tangentsNeedUpdate = true;
				geometry.colorsNeedUpdate = true;

				addBuffers = true;

			} else {

				addBuffers = false;

			}

			if ( addBuffers || object.__webglActive === undefined ) {

				addBuffer( _webglObjects, geometryGroup, object );

			}

		}

		object.__webglActive = true;

	}

	function addBuffer( objlist, buffer, object ) {