From kde-commits  Sun Dec 04 20:51:54 2016
From: Torsten Rahn <trahn () testo ! de>
Date: Sun, 04 Dec 2016 20:51:54 +0000
To: kde-commits
Subject: [marble] src/lib/marble/geodata/graphicsitem: Performance: At level 17 render buildings flat.
Message-Id: <E1cDdlK-0000UE-Nk () code ! kde ! org>
X-MARC-Message: https://marc.info/?l=kde-commits&m=148088472330047

Git commit 2777cef9944b3423230b0c1e6980cfd20750cd30 by Torsten Rahn.
Committed on 04/12/2016 at 20:45.
Pushed by rahn into branch 'master'.

Performance: At level 17 render buildings flat.

This makes the 2D->3D transition more smooth and reduces
the amount of drawing calls.

M  +9    -1    src/lib/marble/geodata/graphicsitem/BuildingGeoPolygonGraphi=
csItem.cpp

https://commits.kde.org/marble/2777cef9944b3423230b0c1e6980cfd20750cd30

diff --git a/src/lib/marble/geodata/graphicsitem/BuildingGeoPolygonGraphics=
Item.cpp b/src/lib/marble/geodata/graphicsitem/BuildingGeoPolygonGraphicsIt=
em.cpp
index bee2e30..7df35dc 100644
--- a/src/lib/marble/geodata/graphicsitem/BuildingGeoPolygonGraphicsItem.cpp
+++ b/src/lib/marble/geodata/graphicsitem/BuildingGeoPolygonGraphicsItem.cpp
@@ -209,7 +209,15 @@ QVector<BuildingGeoPolygonGraphicsItem::NamedEntry> Bu=
ildingGeoPolygonGraphicsIt
 =

 void BuildingGeoPolygonGraphicsItem::paint(GeoPainter* painter, const View=
portParams* viewport, const QString &layer, int tileZoomLevel)
 {
-    Q_UNUSED(tileZoomLevel);
+    // Just display flat buildings for tile level 17
+    if (tileZoomLevel =3D=3D 17) {
+        if (layer.endsWith(QLatin1String("/frame"))) {
+            AbstractGeoPolygonGraphicsItem::paint(painter, viewport, layer=
, tileZoomLevel );
+        }
+        return;
+    }
+
+    // For level 18, 19 .. render 3D buildings in perspective
     if (layer.endsWith(QLatin1String("/frame"))) {
         Q_ASSERT(m_cachedOuterPolygons.isEmpty());
         Q_ASSERT(m_cachedInnerPolygons.isEmpty());