diff --git a/examples/d3d/src/d3d.d b/examples/d3d/src/d3d.d
index 7e088ecf..ceb5aeeb 100644
--- a/examples/d3d/src/d3d.d
+++ b/examples/d3d/src/d3d.d
@@ -128,15 +128,20 @@ class UiWidget : VerticalLayout, CellVisitor {
 
         _minerMesh = new Mesh(VertexFormat(VertexElementType.POSITION, VertexElementType.NORMAL, VertexElementType.COLOR, VertexElementType.TEXCOORD0));
         _world = new World();
-        for (int x = -100; x < 100; x++)
-            for (int z = -100; z < 100; z++)
-                _world.setCell(x, 0, z, 1);
         _world.setCell(0, 11, 10, 2);
         _world.setCell(5, 11, 15, 2);
+        for (int x = -100; x < 100; x++)
+            for (int z = -100; z < 100; z++)
+                _world.setCell(x, 0, z, 2);
         Random rnd;
         rnd.setSeed(12345);
-        for(int i = 0; i < 1000; i++)
-            _world.setCell(rnd.next(6)-32, rnd.next(4), rnd.next(6)-32, 3);
+        for(int i = 0; i < 1000; i++) {
+            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);
+            _world.setCell(bx, by, bz, 3);
+        }
 
         _world.camPosition = Position(Vector3d(0, 3, 0), Vector3d(0, 0, 1));
         updateMinerMesh();
@@ -205,6 +210,8 @@ class UiWidget : VerticalLayout, CellVisitor {
         _world.visitVisibleCells(_world.camPosition, this);
         long duration = currentTimeMillis - ts;
         Log.d("DiamondVisitor finished in ", duration, " ms  ", "Vertex count: ", _minerMesh.vertexCount);
+        for (int i = 0; i < 20; i++)
+            Log.d("vertex: ", _minerMesh.vertex(i));
     }
 
     World _world;
diff --git a/examples/d3d/src/dminer/core/blocks.d b/examples/d3d/src/dminer/core/blocks.d
index cca18ec4..4fe5e895 100644
--- a/examples/d3d/src/dminer/core/blocks.d
+++ b/examples/d3d/src/dminer/core/blocks.d
@@ -65,7 +65,7 @@ public:
         ushort startVertexIndex = cast(ushort)mesh.vertexCount;
         float[VERTEX_COMPONENTS * 4] vptr;
         ushort[6] iptr;
-        createFaceMesh(vptr.ptr, face, pos.x + 0.5f, pos.y + 0.5f, pos.z + 0.5f, txIndex);
+        createFaceMesh(vptr.ptr, face, pos.x, pos.y, pos.z, txIndex);
         for (int i = 0; i < 6; i++)
             iptr[i] = cast(ushort)(startVertexIndex + face_indexes[i]);
         //if (HIGHLIGHT_GRID && ((pos.x & 7) == 0 || (pos.z & 7) == 0)) {
@@ -149,10 +149,9 @@ static void fillFaceMesh(float * data, const float * src, float x0, float y0, fl
     for (int i = 0; i < 4; i++) {
         const float * srcvertex = src + i * VERTEX_COMPONENTS;
         float * dstvertex = data + i * VERTEX_COMPONENTS;
-        for (int j = 0; j < 11; j++) {
+        for (int j = 0; j < VERTEX_COMPONENTS; j++) {
             float v = srcvertex[j];
             switch (j) {
-                default:
                 case 0: // x
                     v += x0;
                     break;
@@ -166,7 +165,10 @@ static void fillFaceMesh(float * data, const float * src, float x0, float y0, fl
                     v = ((tileX + v * BLOCK_SPRITE_SIZE)) / cast(float)BLOCK_TEXTURE_DX;
                     break;
                 case 11: // tx.v
-                    v = (BLOCK_TEXTURE_DY - (tileY + v * BLOCK_SPRITE_SIZE)) / cast(float)BLOCK_TEXTURE_DY;
+                    //v = (BLOCK_TEXTURE_DY - (tileY + v * BLOCK_SPRITE_SIZE)) / cast(float)BLOCK_TEXTURE_DY;
+                    v = ((tileY + v * BLOCK_SPRITE_SIZE)) / cast(float)BLOCK_TEXTURE_DY;
+                    break;
+                default:
                     break;
             }
             dstvertex[j] = v;
diff --git a/examples/d3d/src/dminer/core/minetypes.d b/examples/d3d/src/dminer/core/minetypes.d
index c2e5af8a..91091854 100644
--- a/examples/d3d/src/dminer/core/minetypes.d
+++ b/examples/d3d/src/dminer/core/minetypes.d
@@ -726,7 +726,7 @@ int mySign(int n) {
         return 0;
 }
 
-immutable ulong RANDOM_MULTIPLIER  = ((cast(ulong)1 << 48) - 1);
+immutable ulong RANDOM_MULTIPLIER  = 0x5DEECE66D;
 immutable ulong RANDOM_MASK = ((cast(ulong)1 << 48) - 1);
 immutable ulong RANDOM_ADDEND = cast(ulong)0xB;
 
diff --git a/src/dlangui/graphics/scene/mesh.d b/src/dlangui/graphics/scene/mesh.d
index a4a56bd3..7772a23f 100644
--- a/src/dlangui/graphics/scene/mesh.d
+++ b/src/dlangui/graphics/scene/mesh.d
@@ -174,6 +174,11 @@ class Mesh {
         _dirtyVertexBuffer = true;
     }
 
+    const(float[]) vertex(int index) {
+        int i = _vertexFormat.vertexFloats * index;
+        return _vertexData[i .. i + _vertexFormat.vertexFloats];
+    }
+
     void reset() {
         _vertexCount = 0;
         _vertexData.length = 0;