Merge "When the incoming light source is invalid, don\'t generate any shadow" into mnc-dr-dev

am: 76d20b4a5c

* commit '76d20b4a5c6463235d9497b8018a38c059a6761c':
  When the incoming light source is invalid, don't generate any shadow

libs/hwui/ShadowTessellator.cpp

@@ -80,6 +80,11 @@ void ShadowTessellator::tessellateSpotShadow(bool isCasterOpaque,
     ALOGD("light center %f %f %f %d",
             adjustedLightCenter.x, adjustedLightCenter.y, adjustedLightCenter.z, lightRadius);
 #endif
+    if (isnan(adjustedLightCenter.x)
+            || isnan(adjustedLightCenter.y)
+            || isnan(adjustedLightCenter.z)) {
+        return;
+    }
 
     // light position (because it's in local space) needs to compensate for receiver transform
     // TODO: should apply to light orientation, not just position