Fixed an issue where some occluders were wrongly culled out from the shadow map at very steep light angle, and when the view cam was almost align with light direction.

Author: Nehon

jme3-core/src/main/java/com/jme3/shadow/DirectionalLightShadowRenderer.java

@@ -145,7 +145,7 @@ protected void updateShadowCams(Camera viewCam) {
         float frustumNear = Math.max(viewCam.getFrustumNear(), 0.001f);
         ShadowUtil.updateFrustumPoints(viewCam, frustumNear, zFar, 1.0f, points);
 
-        //shadowCam.setDirection(direction);
+        shadowCam.setFrustumFar(zFar);
         shadowCam.getRotation().lookAt(light.getDirection(), shadowCam.getUp());
         shadowCam.update();
         shadowCam.updateViewProjection();

jme3-core/src/main/java/com/jme3/shadow/ShadowUtil.java

@@ -465,7 +465,7 @@ public static void updateShadowCamera(ViewPort viewPort,
         shadowCam.setProjectionMatrix(null);
 
         if (ortho) {
-            shadowCam.setFrustum(-1, 1, -1, 1, 1, -1);
+            shadowCam.setFrustum(-shadowCam.getFrustumFar(), shadowCam.getFrustumFar(), -1, 1, 1, -1);
         }
 
         // create transform to rotate points to viewspace