From 7f4d70244f9d36ece1b0ba3a0d095325c70e7090 Mon Sep 17 00:00:00 2001
From: Mr F <somemail256@gmail.com>
Date: Thu, 28 Apr 2016 14:45:20 +0300
Subject: [PATCH] fix directional shadow flickering

---
 src/scene/forward-renderer.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/scene/forward-renderer.js b/src/scene/forward-renderer.js
index d5ceda1bd32..a819c55f709 100644
--- a/src/scene/forward-renderer.js
+++ b/src/scene/forward-renderer.js
@@ -14,6 +14,8 @@ pc.extend(pc, function () {
         new pc.Mat4().setScale(0.5, 0.5, 0.5)
     );
 
+    var directionalShadowEpsilon = 0.01;
+
     var shadowCamView = new pc.Mat4();
     var shadowCamViewProj = new pc.Mat4();
     var c2sc = new pc.Mat4();
@@ -1173,7 +1175,7 @@ pc.extend(pc, function () {
 
                             // 3. Fix projection
                             shadowCam._node.setPosition(light._node.getPosition());
-                            shadowCam._node.translateLocal(centerx, centery, maxz);
+                            shadowCam._node.translateLocal(centerx, centery, maxz + directionalShadowEpsilon);
                             shadowCam.setFarClip( maxz - minz );
 
                             this.setCamera(shadowCam, true);