diff --git a/examples/d3d/src/d3d.d b/examples/d3d/src/d3d.d
index 0f1df37c..3b991942 100644
--- a/examples/d3d/src/d3d.d
+++ b/examples/d3d/src/d3d.d
@@ -121,7 +121,7 @@ class UiWidget : VerticalLayout, CellVisitor {
         dirLightNode.translateX(2);
         dirLightNode.translateY(3);
         dirLightNode.translateZ(3);
-        dirLightNode.light = Light.createPoint(vec3(110, 110.5, 110.5), 15); //Light.createDirectional(vec3(1, 0.5, 0.5));
+        dirLightNode.light = Light.createPoint(vec3(1, 0.5, 0.5), 15); //Light.createDirectional(vec3(1, 0.5, 0.5));
         //dirLightNode.light = Light.createDirectional(vec3(11, 10.5, 10.5));
         dirLightNode.light.enabled = true;
         _scene.addChild(dirLightNode);
@@ -156,7 +156,7 @@ class UiWidget : VerticalLayout, CellVisitor {
         suzanneMaterial.diffuseColor = vec4(1.0, 0.7, 0.5, 1.0);
         //suzanneMaterial.specular = true;
         Model suzanneDrawable = new Model(suzanneMaterial, importer.mesh);
-        Node3d suzanneNode = new Node3d("suzanne", suzanneDrawable);
+        suzanneNode = new Node3d("suzanne", suzanneDrawable);
         //suzanneNode.translate(vec3(3, 4, 5));
         _scene.addChild(suzanneNode);
 
@@ -174,7 +174,7 @@ class UiWidget : VerticalLayout, CellVisitor {
             int bx = rnd.next(6)-32;
             int by = rnd.next(4); 
             int bz = rnd.next(6)-32;
-            Log.fd("Setting cell %d,%d,%d", bx, by, bz);
+            //Log.fd("Setting cell %d,%d,%d", bx, by, bz);
             _world.setCell(bx, by, bz, 3);
         }
 
@@ -200,6 +200,7 @@ class UiWidget : VerticalLayout, CellVisitor {
     }
 
     Node3d dirLightNode;
+    Node3d suzanneNode;
 
     float rotationX;
     float rotationY;
@@ -272,6 +273,7 @@ class UiWidget : VerticalLayout, CellVisitor {
         _cam.rotateY(0.02);
         angle += interval * 0.000002f;
         invalidate();
+        suzanneNode.rotateY(interval * 0.000002f);
     }
     float angle = 0;
 
diff --git a/src/dlangui/core/math3d.d b/src/dlangui/core/math3d.d
index b1a85c01..30216878 100644
--- a/src/dlangui/core/math3d.d
+++ b/src/dlangui/core/math3d.d
@@ -1007,6 +1007,17 @@ struct mat4 {
         return this;
     }
 
+    /// transpose matrix
+    void transpose() {
+        float[16] tmp = [
+            m[0], m[4], m[8], m[12],
+            m[1], m[5], m[9], m[13],
+            m[2], m[6], m[10], m[14],
+            m[3], m[7], m[11], m[15]
+        ];
+        m = tmp;
+    }
+
     mat4 invert() const
     {
         float a0 = m[0] * m[5] - m[1] * m[4];
diff --git a/src/dlangui/graphics/scene/material.d b/src/dlangui/graphics/scene/material.d
index 64223847..6aa9f8b6 100644
--- a/src/dlangui/graphics/scene/material.d
+++ b/src/dlangui/graphics/scene/material.d
@@ -124,16 +124,17 @@ class Material : RefCountedObject {
             texture.texture.setup();
             texture.texture.setSamplerParams(true);
         }
-        // TODO: more uniforms
+        // matrixes, positions uniforms
         if (_effect.hasUniform(DefaultUniform.u_worldViewProjectionMatrix))
             _effect.setUniform(DefaultUniform.u_worldViewProjectionMatrix, node.projectionViewModelMatrix);
         if (_effect.hasUniform(DefaultUniform.u_cameraPosition))
             _effect.setUniform(DefaultUniform.u_cameraPosition, node.cameraPosition);
-        if (_effect.hasUniform(DefaultUniform.u_worldViewMatrix)) {
+        if (_effect.hasUniform(DefaultUniform.u_worldViewMatrix))
             _effect.setUniform(DefaultUniform.u_worldViewMatrix, node.worldViewMatrix);
-            //Log.d("DefaultUniform.u_worldViewMatrix: ", node.worldViewMatrix);
-            //Log.d("DefaultUniform.u_worldViewMatrix * 3,3,3: ", node.worldViewMatrix * vec3(3,3,3));
-        }
+        if (_effect.hasUniform(DefaultUniform.u_inverseTransposeWorldViewMatrix))
+            _effect.setUniform(DefaultUniform.u_inverseTransposeWorldViewMatrix, node.inverseTransposeWorldViewMatrix);
+
+        // color uniforms
         if (_effect.hasUniform(DefaultUniform.u_ambientColor))
             _effect.setUniform(DefaultUniform.u_ambientColor, _ambientColor);
         if (_effect.hasUniform(DefaultUniform.u_diffuseColor))
@@ -142,6 +143,8 @@ class Material : RefCountedObject {
             _effect.setUniform(DefaultUniform.u_modulateColor, _modulateColor);
         if (_effect.hasUniform(DefaultUniform.u_modulateAlpha))
             _effect.setUniform(DefaultUniform.u_modulateAlpha, _modulateAlpha);
+
+        // lighting uniforms
         if (lights && !lights.empty) {
             if (lights.u_directionalLightDirection.length) {
                 if (_effect.hasUniform(DefaultUniform.u_directionalLightDirection)) {
diff --git a/src/dlangui/graphics/scene/node.d b/src/dlangui/graphics/scene/node.d
index 8713430b..1fc568a6 100644
--- a/src/dlangui/graphics/scene/node.d
+++ b/src/dlangui/graphics/scene/node.d
@@ -175,6 +175,37 @@ class Node3d : Transform {
         return translation;
     }
 
+    /**
+    * Gets the inverse transpose world matrix corresponding to this node.
+    *
+    * This matrix is typically used to transform normal vectors into world space.
+    *
+    * @return The inverse world matrix of this node.
+    */
+    @property ref const(mat4) inverseTransposeWorldMatrix() {
+        static __gshared mat4 invTransWorld;
+        invTransWorld = worldMatrix;
+        invTransWorld.invert();
+        invTransWorld.transpose();
+        return invTransWorld;
+    }
+
+    /**
+    * Gets the inverse transpose world view matrix corresponding to this node.
+    *
+    * This matrix is typically used to transform normal vectors into view space.
+    *
+    * @return The inverse world view matrix of this node.
+    */
+    @property ref const(mat4) inverseTransposeWorldViewMatrix() {
+        static __gshared mat4 invTransWorldView;
+        invTransWorldView = viewMatrix * worldMatrix;
+        invTransWorldView.invert();
+        invTransWorldView.transpose();
+        return invTransWorldView;
+    }
+
+
     /**
     * Returns the forward vector of the Node in world space.
     *