![\"screenshot.png\"](\"https://cdn.nlark.com/yuque/0/2020/png/327143/1591345392693-4401beec-0ab9-44d4-89b4-36b022d5ef22.png#height=441&id=Y2nPX&margin=%5Bobject%20Object%5D&name=screenshot.png&originHeight=1920&originWidth=1080&originalType=binary&ratio=1&size=1035417&status=done&style=none&width=248\")
创建多个渲染设备，比较场景的为包括主屏、仪表盘、HUD、后座屏、车镜等。将带来更加智能化和安全化的交互体验。如可以在多个屏幕中显示不同的内容，如不同的比例尺，不同的俯仰角状态等。可以不同用户关注不同的信息。
开启多屏渲染的消耗会相应的增加，以车机+1扩展屏为例，每增加1个扩展屏，渲染相关性能需要至少增加1倍。
场景图
![](\"https://cdn.nlark.com/yuque/__puml/19b88ec0e13fffe5c56ea4ad02fdf57c.svg#lake_card_v2=eyJ0eXBlIjoicHVtbCIsImNvZGUiOiJAc3RhcnR1bWxcblxuYXV0b251bWJlclxuXG5wYXJ0aWNpcGFudCBcIuWuouaIt-err1wiIGFzIEhNSVxucGFydGljaXBhbnQgXCJBdXRvU0RLXCIgYXMgQXV0b1NESyAjb3JhbmdlXG5cbnJlZiBvdmVyIEhNSSwgQXV0b1NESyA6IOWcsOWbvuacjeWKoeWIneWni-WMlu-8iOeVpe-8iVxuZ3JvdXAgPGNvbG9yIHJlZD4g5aSa5bGP6K6-5aSH5Zy65pmvXG5cbkhNSSAtPiBBdXRvU0RLOiBNYXBTZXJ2aWNlLmNyZWF0ZURldmljZSDliJvlu7rlnLDlm77orr7lpIdFR0xEZXZpY2VJRERlZmF1bHRcbmFjdGl2YXRlIEF1dG9TREtcbkhNSSAtPiBBdXRvU0RLOiBNYXBEZXZpY2UuYWRkRGV2aWNlT2JzZXJ2ZXIg5re75Yqg6Jma5ouf6K6-5aSH6KeC5a-f6ICFXG5ITUkgLT4gQXV0b1NESzogTWFwU2VydmljZS5jcmVhdGVNYXBWaWV3IOWIm-W7uuWcsOWbvuinhuWbvk1hcEVuZ2luZUlkTWFpblxuSE1JIC0-IEF1dG9TREs6IE1hcFZpZXcuYWRkTWFwdmlld09ic2VydmVyIOa3u-WKoOWcsOWbvuinhuWbvuinguWvn-iAhVxuSE1JIC0-IEF1dG9TREs6IE1hcFZpZXcuYWRkR2VzdHVyZU9ic2VydmVyIOa3u-WKoOaJi-WKv-inguWvn-iAhVxuSE1JIC0-IEF1dG9TREs6IE1hcFZpZXcuc2V0VGV4dFRleHR1cmVPYnNlcnZlciDorr7nva7lrZfkvZPnurnnkIbop4Llr5_ogIVcbmRlYWN0aXZhdGUgQXV0b1NES1xuSE1JPC1BdXRvU0RLOuWIm-W7uuWcsOWbvuiuvuWkh-WujOaIkOWbnuiwg1xcbklEZXZpY2VPYnNlcnZlci5vbkRldmljZUNyZWF0ZWQoRUdMRGV2aWNlSUREZWZhdWx0KVxuXG5ITUkgLT4gQXV0b1NESzogTWFwU2VydmljZS5jcmVhdGVEZXZpY2Ug5Yib5bu65Zyw5Zu-6K6-5aSHRUdMRGV2aWNlSURFeHRlcm5hbDFcblxuYWN0aXZhdGUgQXV0b1NES1xuSE1JIC0-IEF1dG9TREs6IE1hcERldmljZS5hZGREZXZpY2VPYnNlcnZlciDmt7vliqDomZrmi5_orr7lpIfop4Llr5_ogIVcbkhNSSAtPiBBdXRvU0RLOiBNYXBTZXJ2aWNlLmNyZWF0ZU1hcFZpZXcg5Yib5bu65Zyw5Zu-6KeG5Zu-TWFwRW5naW5lSWRFeDFcbkhNSSAtPiBBdXRvU0RLOiBNYXBWaWV3LmFkZE1hcHZpZXdPYnNlcnZlciDmt7vliqDlnLDlm77op4blm77op4Llr5_ogIVcbkhNSSAtPiBBdXRvU0RLOiBNYXBWaWV3LmFkZEdlc3R1cmVPYnNlcnZlciDmt7vliqDmiYvlir_op4Llr5_ogIVcbkhNSSAtPiBBdXRvU0RLOiBNYXBWaWV3LnNldFRleHRUZXh0dXJlT2JzZXJ2ZXIg6K6-572u5a2X5L2T57q555CG6KeC5a-f6ICFXG5kZWFjdGl2YXRlIEF1dG9TREtcblxuSE1JPC1BdXRvU0RLOuWIm-W7uuWcsOWbvuiuvuWkh-WujOaIkOWbnuiwg1xcbklEZXZpY2VPYnNlcnZlci5vbkRldmljZUNyZWF0ZWQoRUdMRGV2aWNlSURFeHRlcm5hbDEpXG5kZWFjdGl2YXRlIEF1dG9TREtcblxuZW5kXG5AZW5kdW1sIiwidXJsIjoiaHR0cHM6Ly9jZG4ubmxhcmsuY29tL3l1cXVlL19fcHVtbC8xOWI4OGVjMGUxM2ZmZmU1YzU2ZWE0YWQwMmZkZjU3Yy5zdmciLCJpZCI6IktQV0RUIiwiY2FyZCI6ImRpYWdyYW0ifQ==\")
主屏参数
副屏参数
// 创建\nMapDevice com.autonavi.gbl.map.MapService.createDevice(\n @EGLDeviceID.EGLDeviceID1 int shareDeviceId,\n DeviceAttribute deviceAttr,\n IDeviceObserver pIDeviceObserver \n)\n\n// 创建视图\nMapView com.autonavi.gbl.map.MapService.createMapView(\n MapViewParam param,\n\tIBLMapViewProxy mapViewProxy,\n\tIBLMapEngineObserver mapEngineObserver,\n\tIBLMapBusinessDataObserver mapBusinessDataObserver,\n\tIAnimationObserver animationObserver \n)说明：函数详情，请复制函数名称到在线API搜索
// 创建虚拟设备\nDeviceAttribute devAttribute = new DeviceAttribute();\ndevAttribute.isNeedAntialias = true;\ndevAttribute.samples = 4;\ndevAttribute.uiTaskDeviceId = EGLDeviceID.EGLDeviceIDExternal1; // 需要指定\nmapDevice = mapService.createDevice(EGLDeviceID.EGLDeviceIDDefault, devAttribute, this);\nmapDevice1 = mapService.createDevice(EGLDeviceID.EGLDeviceIDExternal1, devAttribute, this);\n\n// 创建渲染视图\nMapViewParam mapViewParam = new MapViewParam();\nmapViewParam.deviceId = mapDevice.getDeviceId();\nmapViewParam.engineId = MapEngineID.MapEngineIdMain;\nmapViewParam.x = 0;\nmapViewParam.y = 0;\nmapViewParam.width = AutoConstant.mScreenWidth;\nmapViewParam.height = AutoConstant.mScreenHeight / 2;\nmapViewParam.screenWidth = AutoConstant.mScreenWidth;\nmapViewParam.screenHeight = AutoConstant.mScreenHeight / 2;\nmapViewParam.cacheCountFactor = 2.0F;\nmapViewParam.mapProfileName = "mapprofile_1";\n\nmapView = mapService.createMapView(mapViewParam, new IBLMapViewProxy() {\n @Override\n public void reloadMapResource(long l, byte[] bytes, int i) {\n\n }\n\n @Override\n public void requireMapRender(long engineId, int needFrames, int adviseFPS) {\n if (null != mapDevice) {\n mapDevice.resetTickCount(needFrames);\n }\n }\n\n @Override\n public byte[] requireMapResource(long l, MapResourceParam mapResourceParam) {\n return MapHelper.getMapAssetHelper().requireResource(CC.getApplication(), mapResourceParam);\n }\n\n @Override\n public void onMapLogReporter(long l, int i, int i1, String s) {\n\n }\n\n @Override\n public void onSendBehaviorLog(long l, String s, String s1, String s2) {\n\n }\n\n},\n null,\n null,\n null);\n\nmapViewParam.deviceId = mapDevice1.getDeviceId();\nmapViewParam.engineId = MapEngineID.MapEngineIdEx1;\n\nmapView1 = mapService.createMapView(mapViewParam, new IBLMapViewProxy() {\n @Override\n public void reloadMapResource(long l, byte[] bytes, int i) {\n\n }\n\n @Override\n public void requireMapRender(long engineId, int needFrames, int adviseFPS) {\n if (null != mapDevice) {\n mapDevice.resetTickCount(needFrames);\n }\n }\n\n @Override\n public byte[] requireMapResource(long l, MapResourceParam mapResourceParam) {\n return MapHelper.getMapAssetHelper().requireResource(CC.getApplication(), mapResourceParam);\n }\n\n @Override\n public void onMapLogReporter(long l, int i, int i1, String s) {\n\n }\n\n @Override\n public void onSendBehaviorLog(long l, String s, String s1, String s2) {\n\n }\n\n},\n null,\n null,\n null);\n\n//将地图资源设置给View\nglMapSurface.setMapService(mapService);\nglMapSurface.setDefaultDevice(mapDevice);\nglMapSurface.setDefaultMapView(mapView);\n\nglMapSurface1.setMapService(mapService);\nglMapSurface1.setDefaultDevice(mapDevice1);\nglMapSurface1.setDefaultMapView(mapView1);