diff --git a/qglview/glvbo.cpp b/qglview/glvbo.cpp
index 4e7ee68..62187aa 100644
--- a/qglview/glvbo.cpp
+++ b/qglview/glvbo.cpp
@@ -222,6 +222,19 @@ void GLVBO::clear() {
 }
 
 
+void GLVBO::translatePoints(const QVector3D & dp) {
+	if (vertices_.isEmpty()) return;
+	int vcnt = vertices_.size() / 3;
+	for (int i = 0; i < vcnt; ++i) {
+		int vi = i * 3;
+		vertices_[vi + 0] += dp.x();
+		vertices_[vi + 1] += dp.y();
+		vertices_[vi + 2] += dp.z();
+	}
+	rebuffer();
+}
+
+
 bool GLVBO::saveToFile(const QString & filename) {
 	if (filename.isEmpty()) return false;
 	QFile f(filename);
diff --git a/qglview/glvbo.h b/qglview/glvbo.h
index 9563938..885ed04 100644
--- a/qglview/glvbo.h
+++ b/qglview/glvbo.h
@@ -46,6 +46,8 @@ public:
 	QVector<GLfloat> & texcoords() {changed = true; return texcoords_;}
 	QVector<GLfloat> & colors() {changed = true; return colors_;}
 
+	void translatePoints(const QVector3D & dp);
+
 	bool saveToFile(const QString & filename);
 	bool loadFromFile(const QString & filename);
 
diff --git a/qglview/shaders/dsl_pass_1.frag b/qglview/shaders/dsl_pass_1.frag
index c7a71ea..962e9a9 100644
--- a/qglview/shaders/dsl_pass_1.frag
+++ b/qglview/shaders/dsl_pass_1.frag
@@ -129,9 +129,9 @@ void main(void) {
 
 	sh_pow = 1. / max((1. - v1.w), 0.0001);
 	sh_mul = max(1. - v1.w, 0.0001);
-	//for (int i = 0; i < 8; ++i)
-	//	calcLight(i, n, v, v2);
-		calcLight(0, n, v, v2);
+	for (int i = 0; i < 8; ++i)
+		calcLight(i, n, v, v2);
+	//	calcLight(0, n, v, v2);
 
 	qgl_FragData[0].rgb = li * dc + si * v2.rgb + v3.rgb + texelFetch(t_pp, tc, 0).rgb;
 	//qgl_FragData[0].rgb = li + vec3(texelFetch(t_pp, tc, 0).xyz);