diff --git a/Assignments/Assignment2.zip b/Assignments/Assignment2.zip
new file mode 100644
index 0000000..fdad9d5
Binary files /dev/null and b/Assignments/Assignment2.zip differ
diff --git a/Assignments/Assignment2/Application2.cpp b/Assignments/Assignment2/Application2.cpp
index 2fba96b..e3ae45b 100644
--- a/Assignments/Assignment2/Application2.cpp
+++ b/Assignments/Assignment2/Application2.cpp
@@ -265,11 +265,11 @@ Vec3fa Application2::renderPixelHeterogeneousNEE(float x, float y, const ISPCCam
                 L += Lw * absorbtion * emissive;
                 Lw *= 1.0 - absorbtion;
 
-                ray = Ray(ray.org + t * ray.dir,o,EPS,inf);
+                ray = Ray(ray.org + t * ray.dir,o,0.0,inf);
                 
             } else {
                 // printf("volume(%f,%f,%f), t: %f, tfar: %f\n", ray.org.x, ray.org.y, ray.org.z, t, ray.tfar);
-                ray = Ray(ray.org + t * ray.dir, ray.dir, EPS, inf);
+                ray = Ray(ray.org + t * ray.dir, ray.dir, 0.0, inf);
                 i--;
             }
 
@@ -347,6 +347,7 @@ Vec3fa Application2::renderPixelHeterogeneous(float x, float y, const ISPCCamera
             if (ray.geomID == RTC_INVALID_GEOMETRY_ID) {
                 // printf("here(%f,%f,%f)\n", ray.org.x, ray.org.y, ray.org.z);
                 break;
+                // return Vec3fa(0.0, 0.0, 10.0);
             }
 
             float r = RandomSampler_get1D(sampler);
@@ -381,11 +382,11 @@ Vec3fa Application2::renderPixelHeterogeneous(float x, float y, const ISPCCamera
                 L += Lw * absorbtion * emissive;
                 Lw *= 1.0 - absorbtion;
 
-                ray = Ray(ray.org + t * ray.dir,o,EPS,inf);
+                ray = Ray(ray.org + t * ray.dir,o,0.0,inf);
                 
             } else {
                 // printf("volume(%f,%f,%f), t: %f, tfar: %f\n", ray.org.x, ray.org.y, ray.org.z, t, ray.tfar);
-                ray = Ray(ray.org + t * ray.dir, ray.dir, EPS, inf);
+                ray = Ray(ray.org + t * ray.dir, ray.dir, 0.0, inf);
                 i--;
             }