diff --git a/data/tiles/tiles.blend b/data/tiles/tiles.blend
index 408a913..b4bb826 100644
Binary files a/data/tiles/tiles.blend and b/data/tiles/tiles.blend differ
diff --git a/data/tiles/tiles.hacks b/data/tiles/tiles.hacks
deleted file mode 100644
index 62a1455..0000000
--- a/data/tiles/tiles.hacks
+++ /dev/null
@@ -1,5 +0,0 @@
-water = _water mesh grass
-sand = _sand mesh grass
-rock = _rock mesh grass
-mud = _mud mesh grass
-lava = _lava mesh grass
diff --git a/data/tiles/tiles.mtl b/data/tiles/tiles.mtl
index 995710d..d181610 100644
--- a/data/tiles/tiles.mtl
+++ b/data/tiles/tiles.mtl
@@ -1,10 +1,8 @@
-# Blender 3.2.2 MTL File: 'tiles.blend'
+# Blender 3.3.1 MTL File: 'tiles.blend'
 # www.blender.org
 
 newmtl forest
-Ns 10.000005
 Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
 Ks 0.100000 0.100000 0.100000
 Ke 0.000000 0.000000 0.000000
 Ni 0.000000
@@ -16,7 +14,6 @@ map_Ns forest_r.png
 newmtl grass
 Ns 0.000000
 Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
 Ks 0.100000 0.100000 0.100000
 Ke 0.000000 0.000000 0.000000
 Ni 0.000000
@@ -27,8 +24,7 @@ map_Kd grass.png
 newmtl lava
 Ns 0.000000
 Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
-Ks 0.200000 0.200000 0.200000
+Ks 0.100000 0.100000 0.100000
 Ke 0.000000 0.000000 0.000000
 Ni 0.000000
 d 1.000000
@@ -38,7 +34,6 @@ map_Kd lava.png
 newmtl mud
 Ns 0.000000
 Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
 Ks 0.100000 0.100000 0.100000
 Ke 0.000000 0.000000 0.000000
 Ni 0.000000
@@ -49,7 +44,6 @@ map_Kd mud.png
 newmtl rock
 Ns 0.000000
 Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
 Ks 0.100000 0.100000 0.100000
 Ke 0.000000 0.000000 0.000000
 Ni 0.000000
@@ -60,7 +54,6 @@ map_Kd rock.png
 newmtl sand
 Ns 0.000000
 Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
 Ks 0.100000 0.100000 0.100000
 Ke 0.000000 0.000000 0.000000
 Ni 0.000000
@@ -69,10 +62,9 @@ illum 2
 map_Kd sand.png
 
 newmtl water
-Ns 62.500000
+Ns 0.000000
 Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
-Ks 1.000000 1.000000 1.000000
+Ks 0.100000 0.100000 0.100000
 Ke 0.000000 0.000000 0.000000
 Ni 0.000000
 d 1.000000
diff --git a/data/tiles/tiles.obj b/data/tiles/tiles.obj
index d754d3f..3acabfc 100644
--- a/data/tiles/tiles.obj
+++ b/data/tiles/tiles.obj
@@ -1,4 +1,4 @@
-# Blender 3.2.2
+# Blender 3.3.1
 # www.blender.org
 mtllib tiles.mtl
 o grass
@@ -47,76 +47,6 @@ f 7/7/1 4/4/1 12/12/1
 f 6/6/1 9/9/1 13/13/1
 f 9/9/1 8/8/1 13/13/1
 f 8/8/1 5/5/1 13/13/1
-o _water
-v 4.000000 4.000000 0.000000
-v -4.000000 4.000000 0.000000
-v 4.000000 -4.000000 0.000000
-v -4.000000 -4.000000 0.000000
-vn -0.0000 -0.0000 1.0000
-vt 1.000000 1.000000
-vt 0.000000 1.000000
-vt 1.000000 0.000000
-vt 0.000000 0.000000
-s 0
-usemtl water
-f 16/16/2 14/14/2 15/15/2
-f 16/16/2 15/15/2 17/17/2
-o _sand
-v 4.000000 4.000000 0.000000
-v -4.000000 4.000000 0.000000
-v 4.000000 -4.000000 0.000000
-v -4.000000 -4.000000 0.000000
-vn -0.0000 -0.0000 1.0000
-vt 1.000000 1.000000
-vt 0.000000 1.000000
-vt 1.000000 0.000000
-vt 0.000000 0.000000
-s 0
-usemtl sand
-f 20/20/3 18/18/3 19/19/3
-f 20/20/3 19/19/3 21/21/3
-o _rock
-v 4.000000 4.000000 0.000000
-v -4.000000 4.000000 0.000000
-v 4.000000 -4.000000 0.000000
-v -4.000000 -4.000000 0.000000
-vn -0.0000 -0.0000 1.0000
-vt 1.000000 1.000000
-vt 0.000000 1.000000
-vt 1.000000 0.000000
-vt 0.000000 0.000000
-s 0
-usemtl rock
-f 24/24/4 22/22/4 23/23/4
-f 24/24/4 23/23/4 25/25/4
-o _mud
-v 4.000000 4.000000 0.000000
-v -4.000000 4.000000 0.000000
-v 4.000000 -4.000000 0.000000
-v -4.000000 -4.000000 0.000000
-vn -0.0000 -0.0000 1.0000
-vt 1.000000 1.000000
-vt 0.000000 1.000000
-vt 1.000000 0.000000
-vt 0.000000 0.000000
-s 0
-usemtl mud
-f 28/28/5 26/26/5 27/27/5
-f 28/28/5 27/27/5 29/29/5
-o _lava
-v -4.000000 -4.000000 0.000000
-v 4.000000 -4.000000 0.000000
-v -4.000000 4.000000 0.000000
-v 4.000000 4.000000 0.000000
-vn -0.0000 -0.0000 1.0000
-vt 0.000000 0.000000
-vt 1.000000 0.000000
-vt 0.000000 1.000000
-vt 1.000000 1.000000
-s 0
-usemtl lava
-f 31/31/6 32/32/6 30/30/6
-f 31/31/6 33/33/6 32/32/6
 o forest
 v -4.000000 -4.000000 0.000000
 v 0.000000 -4.000000 0.000000
@@ -308,88 +238,318 @@ vt 0.664062 0.664062
 vt 0.710938 0.695312
 s 0
 usemtl forest
-f 35/35/7 36/36/7 47/51/8
-f 34/34/7 35/35/7 45/47/9
-f 37/37/10 34/34/7 45/47/11
-f 36/36/7 38/38/12 47/51/13
-f 40/40/14 39/39/7 48/52/15
-f 39/39/7 37/37/16 48/52/17
-f 38/38/18 41/41/7 44/46/19
-f 41/41/7 40/40/20 44/46/21
+f 15/15/2 16/16/2 27/31/3
+f 14/14/2 15/15/2 25/27/4
+f 17/17/5 14/14/2 25/27/6
+f 16/16/2 18/18/7 27/31/8
+f 20/20/9 19/19/2 28/32/10
+f 19/19/2 17/17/11 28/32/12
+f 18/18/13 21/21/2 24/26/14
+f 21/21/2 20/20/15 24/26/16
 s 1
-f 50/56/22 42/42/23 46/48/24
-f 51/57/25 43/44/26 49/53/27
-f 52/58/28 74/88/29 73/85/30
-f 53/59/31 74/88/29 52/58/28
-f 53/59/31 76/93/32 75/90/33
-f 50/56/22 46/48/24 43/44/26
-f 51/57/25 50/56/22 43/44/26
-f 51/57/25 49/53/27 76/93/32
-f 53/59/31 51/57/25 76/93/32
-f 53/59/31 75/90/33 74/88/29
-f 52/58/28 73/85/30 42/42/23
-f 52/58/28 42/42/23 50/56/22
-f 51/57/25 55/61/34 50/56/22
+f 30/36/17 22/22/18 26/28/19
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+f 32/38/23 53/65/25 22/22/18
+f 32/38/23 22/22/18 30/36/17
+f 31/37/20 35/41/29 30/36/17
 s 0
-f 45/47/35 46/49/7 42/43/7
-f 45/47/36 73/86/7 37/37/37
-f 47/51/38 46/50/7 35/35/7
-f 47/51/39 49/54/7 43/45/7
-f 48/52/40 73/87/7 74/89/7
-f 48/52/41 75/91/7 40/40/42
-f 44/46/43 49/55/7 38/38/44
-f 44/46/45 75/92/7 76/94/7
+f 25/27/30 26/29/2 22/23/2
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+f 28/32/36 55/71/2 20/20/37
+f 24/26/38 29/35/2 18/18/39
+f 24/26/40 55/72/2 56/74/2
 s 1
-f 56/62/46 57/63/47 71/82/48
-f 53/59/31 54/60/49 51/57/25
-f 52/58/28 56/62/46 53/59/31
-f 50/56/22 57/63/47 52/58/28
-f 60/68/50 61/70/51 67/77/52
-f 57/63/47 55/61/34 72/84/53
-f 58/64/54 60/68/50 68/78/55
-f 59/67/56 58/64/54 69/79/57
-f 63/73/58 62/72/59 70/80/60
+f 36/42/41 37/43/42 51/62/43
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+f 38/44/49 40/48/45 48/58/50
+f 39/47/51 38/44/49 49/59/52
+f 43/53/53 42/52/54 50/60/55
 s 0
-f 45/47/61 35/35/7 46/49/7
-f 45/47/62 42/43/7 73/86/7
-f 47/51/63 43/45/7 46/50/7
-f 47/51/64 38/38/65 49/54/7
-f 48/52/66 37/37/67 73/87/7
-f 48/52/68 74/89/7 75/91/7
-f 44/46/69 76/94/7 49/55/7
-f 44/46/70 40/40/71 75/92/7
+f 25/27/56 15/15/2 26/29/2
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+f 24/26/64 56/74/2 29/35/2
+f 24/26/65 20/20/66 55/72/2
 s 1
-f 61/70/51 59/67/56 66/76/72
-f 59/67/56 63/73/58 66/76/72
-f 63/73/58 65/75/73 66/76/72
-f 65/75/73 61/70/51 66/76/72
-f 61/70/51 65/75/73 67/77/52
-f 65/75/73 64/74/74 67/77/52
-f 64/74/74 60/68/50 67/77/52
-f 60/68/50 64/74/74 68/78/55
-f 64/74/74 62/72/59 68/78/55
-f 62/72/59 58/64/54 68/78/55
-f 58/64/54 62/72/59 69/79/57
-f 62/72/59 63/73/58 69/79/57
-f 63/73/58 59/67/56 69/79/57
-f 62/72/59 64/74/74 70/80/60
-f 64/74/74 65/75/73 70/80/60
-f 65/75/73 63/73/58 70/80/60
-f 55/61/34 54/60/49 77/96/75
-f 54/60/49 58/65/76 77/96/75
-f 58/64/54 59/67/56 77/95/77
-f 59/66/78 55/61/34 77/96/75
-f 54/60/49 56/62/46 78/98/79
-f 56/62/46 60/69/80 78/98/79
-f 60/68/50 58/64/54 78/97/81
-f 58/65/76 54/60/49 78/98/79
-f 57/63/47 61/71/82 71/82/48
-f 61/70/51 60/68/50 71/81/83
-f 60/69/80 56/62/46 71/82/48
-f 55/61/34 59/66/78 72/84/53
-f 59/67/56 61/70/51 72/83/84
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-f 51/57/25 54/60/49 55/61/34
-f 53/59/31 56/62/46 54/60/49
-f 52/58/28 57/63/47 56/62/46
-f 50/56/22 55/61/34 57/63/47
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+s 0
+usemtl lava
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+o mud
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+o rock
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+vt 0.750000 0.750000
+s 0
+usemtl water
+f 112/132/84 113/133/84 121/141/84
+f 114/134/84 115/135/84 122/142/84
+f 115/135/84 116/136/84 123/143/84
+f 111/131/84 112/132/84 120/140/84
+f 112/132/84 115/135/84 120/140/84
+f 115/135/84 114/134/84 120/140/84
+f 114/134/84 111/131/84 120/140/84
+f 113/133/84 116/136/84 121/141/84
+f 116/136/84 115/135/84 121/141/84
+f 115/135/84 112/132/84 121/141/84
+f 115/135/84 118/138/84 122/142/84
+f 118/138/84 117/137/84 122/142/84
+f 117/137/84 114/134/84 122/142/84
+f 116/136/84 119/139/84 123/143/84
+f 119/139/84 118/138/84 123/143/84
+f 118/138/84 115/135/84 123/143/84
diff --git a/engine b/engine
index af25548..8f3612b 160000
--- a/engine
+++ b/engine
@@ -1 +1 @@
-Subproject commit af25548752d7ae7004a937307e06bd4810e46cc7
+Subproject commit 8f3612bed26d4bdb9f6c62541bf6068285f760b3
diff --git a/game/batch.py b/game/batch.py
index 3de0d03..3fe4c6f 100644
--- a/game/batch.py
+++ b/game/batch.py
@@ -19,14 +19,13 @@ from engine import (
     INSTANCE_FLAG_SPAWNED, BATCH_MAX_SIZE, BATCH_ORIENTATION_FORMAT_NONE, create_batch, draw_batch, destroy_batch)
 
 class Batch:
-    __slots__ = '_batch', 'max_size', 'flags', 'texlevels', 'meshes', 'translations', 'orientations'
+    __slots__ = '_batch', 'max_size', 'flags', 'meshes', 'translations', 'orientations'
 
     def __init__(self, max_size, translation_format, orientation_format):
         assert max_size <= BATCH_MAX_SIZE
         self._batch = create_batch(max_size, translation_format, orientation_format)
         self.max_size = max_size
         self.flags = array('B')
-        self.texlevels = array('H')
         self.meshes = array('I')
         self.translations = array('f')
         if orientation_format != BATCH_ORIENTATION_FORMAT_NONE:
@@ -37,13 +36,12 @@ class Batch:
     def __del__(self):
         destroy_batch(self._batch)
 
-    def append(self, flags, texlevel, mesh, translation, orientation):
+    def append(self, flags, mesh, translation, orientation):
         assert len(translation) == 3
         assert orientation is None or len(orientation) == 3
         index = len(self.flags)
         assert index < self.max_size
         self.flags.append(flags | INSTANCE_FLAG_SPAWNED)
-        self.texlevels.append(texlevel)
         self.meshes.append(mesh)
         self.translations.extend(translation)
         if self.orientations is not None:
@@ -57,4 +55,4 @@ class Batch:
         self.orientations[index * 3 : index * 3 + 3] = orientation
 
     def draw(self):
-        draw_batch(self._batch, self.flags, self.texlevels, self.meshes, self.translations, self.orientations)
+        draw_batch(self._batch, self.flags, self.meshes, self.translations, self.orientations)
diff --git a/game/obj2rkar.py b/game/obj2rkar.py
index 41c5059..680a036 100644
--- a/game/obj2rkar.py
+++ b/game/obj2rkar.py
@@ -30,23 +30,6 @@ class ObjArchive(Archive):
     def __init__(self):
         super().__init__()
 
-    def import_hacks(self, path):
-        print("Importing hacks", path)
-        hacks = {}
-        for line in open(path):
-            data = line.split()
-            if not data:
-                continue
-            name = data.pop(0)
-            if name == '#':
-                continue
-            assert len(data) == 4 and data[0] == '=' and data[2] == 'mesh'
-            alias = data[1]
-            mesh = data[3]
-            assert name not in hacks.keys()
-            hacks[name] = (alias, mesh)
-        return hacks
-
     def import_mtl(self, mtlpath):
         def load_value(x):
             x = round(float(x), 6)
@@ -178,12 +161,10 @@ class ObjArchive(Archive):
             elif code == 'o':
                 if name:
                     assert mesh
-                    objects[name] = (texlevel, mesh)
+                    objects[name] = mesh
                 name = data[0]
                 print("Importing object", name)
                 mesh = []
-            elif code == 'usemtl':
-                texlevel = texlevels[data[0]]
             elif code == 'v':
                 position = tuple(map(load_coord, data))
                 assert len(position) == 3
@@ -196,66 +177,57 @@ class ObjArchive(Archive):
                 texcoord = tuple(map(load_coord, data))
                 assert len(texcoord) == 2
                 texcoords.append((texcoord[0], 1.0 - texcoord[1]))
+            elif code == 'usemtl':
+                texlevel = texlevels[data[0]]
             elif code == 'f':
                 indices = tuple(map(lambda x: tuple(map(load_index, x.split('/'))), data))
                 assert len(indices) == 3
                 assert len(indices[0]) == 3
                 assert len(indices[1]) == 3
                 assert len(indices[2]) == 3
-                triangle = tuple(map(lambda x: positions[x[0]] + normals[x[2]] + texcoords[x[1]], indices))
+                triangle = tuple(map(
+                    lambda x: positions[x[0]] + normals[x[2]] + texcoords[x[1]] + (texlevel,), indices))
                 assert len(triangle) == 3 and len(set(triangle)) == 3
                 mesh.append(triangle)
         if name:
             assert mesh
-            objects[name] = (texlevel, mesh)
+            objects[name] = mesh
         vertices = set()
-        for _, mesh in objects.values():
+        for mesh in objects.values():
             vertices |= frozenset(chain.from_iterable(mesh))
         vertices = tuple(vertices)
         indices = []
         models = {}
-        for name, (texlevel, mesh) in sorted(objects.items()):
-            if name[0] == '_':
-                print(name, ": texlevel =", texlevel)
-                models[name] = (texlevel, -1, -1)
-            else:
-                offset = len(indices)
-                assert offset < 65536
-                indices.extend(map(vertices.index, chain.from_iterable(mesh)))
-                count = len(indices) - offset
-                assert count % 3 == 0
-                count //= 3
-                assert count < 65536
-                print(name, ": texlevel =", texlevel, "offset =", offset, "count =", count)
-                models[name] = (texlevel, offset, count)
+        for name, mesh in sorted(objects.items()):
+            offset = len(indices)
+            assert offset < 65536
+            indices.extend(map(vertices.index, chain.from_iterable(mesh)))
+            count = len(indices) - offset
+            assert count % 3 == 0
+            count //= 3
+            assert count < 65536
+            print(name, ": offset =", offset, "triangles =", count)
+            models[name] = (offset, count)
         name = str(objpath.stem)
         assert name not in self.vertices_db.keys()
         #TODO: move to math
         def pack_10(_x):
             return round(_x * (512.0 if _x < 0.0 else 511.0)) & 1023
-        def pack_vertex(_px, _py, _pz, _nx, _ny, _nz, _s, _t):
-            n = (pack_10(_nx) << 20) | (pack_10(_ny) << 10) | (pack_10(_nz) <<  0)
-            s = max(0, min(65535, round(_s * 65535.0)))
-            t = max(0, min(65535, round(_t * 65535.0)))
-            return struct.pack('fffIHH', _px, _py, _pz, n, s, t)
+        def pack_u10(_x):
+            return round(_x * 1023.0) & 1023
+        def pack_vertex(_px, _py, _pz, _nx, _ny, _nz, _s, _t, _tl):
+            n = (pack_10(_nz) << 20) | (pack_10(_ny) << 10) | pack_10(_nx)
+            t = ((_tl & 1023) << 20) | (pack_u10(_t) << 10) | pack_u10(_s)
+            return struct.pack('fffII', _px, _py, _pz, n, t)
         self.vertices_db[name] = VerticesData(name,
             array('B', b''.join(starmap(pack_vertex, vertices))),
             array('H', indices))
-        path = objpath.parent / (objpath.stem + '.hacks')
-        if path.exists():
-            hacks = self.import_hacks(path)
-            for name, (alias, mesh) in hacks.items():
-                print("Hacking", name, "from", alias, "with mesh", mesh)
-                assert name not in models.keys() and alias in models.keys() and mesh in models.keys()
-                texlevel, _, _ = models[alias]
-                _, offset, count = models[mesh]
-                models[name] = (texlevel, offset, count)
-        for name, (texlevel, offset, count) in sorted(models.items()):
+        for name, (offset, count) in sorted(models.items()):
             if name[0] != '_':
                 print("Storing", name)
                 assert name not in self.models_db.keys()
                 self.models_db[name] = ModelData(
-                    name, INSTANCE_FLAG_VISIBLE, texlevel, offset | count << 16)
+                    name, INSTANCE_FLAG_VISIBLE, offset | count << 16)
 
 if __name__ == '__main__':
     if len(sys.argv) < 3:
diff --git a/game/resources.py b/game/resources.py
index 21290cd..d8b9750 100644
--- a/game/resources.py
+++ b/game/resources.py
@@ -23,9 +23,9 @@ import engine
 
 VERTEX_SIZE = 20
 VERTEX_FORMAT = engine.vertex_format(
-    engine.VERTEX_FORMAT_VEC3_FLOAT,
-    engine.VERTEX_FORMAT_VEC3_INT10,
-    engine.VERTEX_FORMAT_VEC2_USHORT)
+    engine.VERTEX_FORMAT_VEC3_FLOAT, # position
+    engine.VERTEX_FORMAT_VEC3_INT10 | engine.VERTEX_FORMAT_NORMALIZE, # normal
+    engine.VERTEX_FORMAT_VEC3_UINT10) # texcoords
 
 def load_png(path):
     width, height, data, _ = png.Reader(filename = path).read_flat()
@@ -166,39 +166,37 @@ def create_vertices(data):
     return engine.create_vertices(VERTEX_FORMAT, len(data.vertices) // VERTEX_SIZE, data.vertices, data.indices)
 
 class ModelData:
-    __slots__ = 'name', 'flags', 'texlevel', 'mesh'
+    __slots__ = 'name', 'flags', 'mesh'
 
-    def __init__(self, name, flags, texlevel, mesh):
+    def __init__(self, name, flags, mesh):
         self.name = name
         self.flags = flags
-        self.texlevel = texlevel
         self.mesh = mesh
 
     @classmethod
     def from_archive(cls, file):
         _read_magic(file, b'MD')
         name = _read_string(file)
-        flags, texlevel, mesh = _read_struct(file, 'BHI')
-        return ModelData(name, flags, texlevel, mesh)
+        flags, mesh = _read_struct(file, 'II')
+        return ModelData(name, flags, mesh)
 
     def to_archive(self, file):
         _write_magic(file, b'MD')
         _write_string(file, self.name)
-        _write_struct(file, 'BHI', (self.flags, self.texlevel, self.mesh))
+        _write_struct(file, 'II', (self.flags, self.mesh))
 
 class Model:
-    __slots__ = 'flags', 'texlevel', 'mesh'
+    __slots__ = 'flags', 'mesh'
 
-    def __init__(self, flags, texlevel, mesh):
+    def __init__(self, flags, mesh):
         self.flags = flags
-        self.texlevel = texlevel
         self.mesh = mesh
 
     def spawn(self, batch, translation = engine.vec3_zero, orientation = engine.vec3_forward):
-        return batch.append(self.flags, self.texlevel, self.mesh, translation, orientation)
+        return batch.append(self.flags, self.mesh, translation, orientation)
 
 def create_model(data):
-    return Model(data.flags, data.texlevel, data.mesh)
+    return Model(data.flags, data.mesh)
 
 class Archive:
     __slots__ = 'textures_db', 'vertices_db', 'models_db'
diff --git a/game/shaders/terrain_opengles.vert b/game/shaders/terrain_opengles.vert
index c1f4dcf..abc65d3 100644
--- a/game/shaders/terrain_opengles.vert
+++ b/game/shaders/terrain_opengles.vert
@@ -18,13 +18,11 @@ precision highp float;
 
 layout(location = 0) in vec3 a_position; // model space
 layout(location = 1) in vec3 a_normal; // model space
-layout(location = 2) in vec2 a_texcoord; // texture space
+layout(location = 2) in vec3 a_texcoord; // texture space
 
-layout(location = 3) in vec4 i_translation; // per mesh, model space -> world space (x, y, z, texlevel)
+layout(location = 3) in vec3 i_translation; // per mesh, model space -> world space
 layout(location = 4) in vec3 i_orientation; // per mesh, model space -> world space
 
-#define i_texlevel i_translation.w
-
 uniform mat4 u_view; // world space -> view space
 uniform mat4 u_projection; // view space -> screen space
 
@@ -33,6 +31,7 @@ uniform highp sampler2D u_normal_sampler;
 
 const vec3 c_normal_scale = vec3(2.0, 2.0, 1.0);
 const vec3 c_normal_shift = vec3(-1.0, -1.0, 0.0);
+const vec2 c_st_scale = vec2(1.0 / 1023.0, 1.0 / 1023.0);
 const vec2 c_terrain_scale = vec2(1.0 / 2048.0, -1.0 / 2048.0);
 const vec2 c_terrain_shift = vec2(0.5, 0.5);
 const float c_weight_scale = 1.0 / 64.f;
@@ -58,6 +57,6 @@ void main(void) {
     v_position = view_position.xyz;
     v_normal = (u_view * vec4(world_normal, 0.0)).xyz;
     v_terrain_normal = vec4((u_view * vec4(terrain_normal, 0.0)).xyz, weight);
-    v_texcoord = vec4(a_texcoord, i_texlevel, i_texlevel + 1.0);
+    v_texcoord = vec4(a_texcoord.st * c_st_scale, a_texcoord.p, a_texcoord.p + 1.0);
     gl_Position = u_projection * view_position;
 }