diff --git a/__init__.py b/__init__.py
index c8d791f..38c3bc7 100644
--- a/__init__.py
+++ b/__init__.py
@@ -38,10 +38,10 @@ TEXTURE_FLAG_MIN_LINEAR = _flag(2)
 TEXTURE_FLAG_MAG_NEAREST = 0
 TEXTURE_FLAG_MAG_LINEAR = _flag(3)
 
-VERTEX_FORMAT_VEC2_FLOAT = 1
-VERTEX_FORMAT_VEC2_USHORT = 2
-VERTEX_FORMAT_VEC3_FLOAT = 3
-VERTEX_FORMAT_VEC3_INT10 = 4
+VERTEX_FORMAT_VEC3_FLOAT = 1
+VERTEX_FORMAT_VEC3_INT10 = 2
+VERTEX_FORMAT_VEC3_UINT10 = 3
+VERTEX_FORMAT_NORMALIZE = _flag(7)
 
 def vertex_format(*format):
     return array('B', format).tobytes()
@@ -344,16 +344,15 @@ _draw_batch.argtypes = (
     ctypes.c_void_p, # batch
     ctypes.c_uint, # size
     ctypes.c_void_p, # flags
-    ctypes.c_void_p, # texlevels
     ctypes.c_void_p, # meshes
     ctypes.c_void_p, # translations
     ctypes.c_void_p) # orientations
 
-def draw_batch(batch, flags, texlevels, meshes, translations, orientations):
+def draw_batch(batch, flags, meshes, translations, orientations):
     size = len(flags)
-    assert len(texlevels) == size and len(meshes) == size and len(translations) == size * 3
+    assert len(meshes) == size and len(translations) == size * 3
     assert not orientations or len(orientations) == size * 3
-    _draw_batch(batch, size, _ubytep(flags), _ushortp(texlevels), _uintp(meshes), _floatp(translations),
+    _draw_batch(batch, size, _ubytep(flags), _uintp(meshes), _floatp(translations),
         _floatp(orientations) if orientations else None)
 
 unselect_vertices = _lib.rk_unselect_vertices
diff --git a/cpp/opengl/render_opengles.cpp b/cpp/opengl/render_opengles.cpp
index 2a6d4dc..796b2f4 100644
--- a/cpp/opengl/render_opengles.cpp
+++ b/cpp/opengl/render_opengles.cpp
@@ -311,17 +311,14 @@ rk_vertices_t rk_create_vertices(
     }
     rk_uint vertex_size = 0;
     for (rk_vertex_format const * f = format; *f; ++f) {
-        switch (*f) {
-            case RK_VERTEX_FORMAT_VEC2_FLOAT:
-                vertex_size += sizeof(float) * 2;
-                break;
-            case RK_VERTEX_FORMAT_VEC2_USHORT:
-                vertex_size += sizeof(rk_ushort) * 2;
-                break;
+        switch (*f & RK_VERTEX_FORMAT_MASK) {
             case RK_VERTEX_FORMAT_VEC3_FLOAT:
-                vertex_size += sizeof(float) * 3;
+                vertex_size += sizeof(rk_vec3);
                 break;
             case RK_VERTEX_FORMAT_VEC3_INT10:
+                vertex_size += sizeof(rk_int);
+                break;
+            case RK_VERTEX_FORMAT_VEC3_UINT10:
                 vertex_size += sizeof(rk_uint);
                 break;
             default:
@@ -346,30 +343,24 @@ rk_vertices_t rk_create_vertices(
     rk_uint offset = 0;
     for (rk_vertex_format const * f = format; *f; ++f, ++vertices->layout) {
         glEnableVertexAttribArray(vertices->layout);
-        switch (*f) {
-            case RK_VERTEX_FORMAT_VEC2_FLOAT:
-                glVertexAttribFormat(vertices->layout, 2, GL_FLOAT, GL_FALSE, offset);
-                glVertexAttribBinding(vertices->layout, RK_VERTICES_BINDING);
-                offset += sizeof(float) * 2;
-                break;
-            case RK_VERTEX_FORMAT_VEC2_USHORT:
-                glVertexAttribFormat(vertices->layout, 2, GL_UNSIGNED_SHORT, GL_TRUE, offset);
-                glVertexAttribBinding(vertices->layout, RK_VERTICES_BINDING);
-                offset += sizeof(rk_ushort) * 2;
-                break;
+        GLboolean const normalize = (*f & RK_VERTEX_FORMAT_NORMALIZE) != 0;
+        switch (*f & RK_VERTEX_FORMAT_MASK) {
             case RK_VERTEX_FORMAT_VEC3_FLOAT:
-                glVertexAttribFormat(vertices->layout, 3, GL_FLOAT, GL_FALSE, offset);
-                glVertexAttribBinding(vertices->layout, RK_VERTICES_BINDING);
-                offset += sizeof(float) * 3;
+                glVertexAttribFormat(vertices->layout, 3, GL_FLOAT, normalize, offset);
+                offset += sizeof(rk_vec3);
                 break;
             case RK_VERTEX_FORMAT_VEC3_INT10:
-                glVertexAttribFormat(vertices->layout, GL_BGRA, GL_INT_2_10_10_10_REV, GL_TRUE, offset);
-                glVertexAttribBinding(vertices->layout, RK_VERTICES_BINDING);
+                glVertexAttribFormat(vertices->layout, 4, GL_INT_2_10_10_10_REV, normalize, offset);
+                offset += sizeof(rk_int);
+                break;
+            case RK_VERTEX_FORMAT_VEC3_UINT10:
+                glVertexAttribFormat(vertices->layout, 4, GL_UNSIGNED_INT_2_10_10_10_REV, normalize, offset);
                 offset += sizeof(rk_uint);
                 break;
             default:
                 break;
         }
+        glVertexAttribBinding(vertices->layout, RK_VERTICES_BINDING);
     }
     glBindVertexBuffer(RK_VERTICES_BINDING, vertices->vertices, 0, vertices->vertex_size);
     glGenBuffers(1, &vertices->indices);
@@ -393,10 +384,10 @@ rk_batch_t rk_create_batch(
     rk_uint translation_size = 0;
     switch (translation_format) {
         case RK_BATCH_TRANSLATION_FORMAT_FLOAT:
-            translation_size = sizeof(float) * 4;
+            translation_size = sizeof(rk_translation_float);
             break;
         case RK_BATCH_TRANSLATION_FORMAT_SHORT:
-            translation_size = sizeof(rk_short) * 4;
+            translation_size = sizeof(rk_translation_short);
             break;
         default:
             rk_printf("rk_create_batch(): invalid translation format.");
@@ -409,10 +400,10 @@ rk_batch_t rk_create_batch(
             orientation_size = 0;
             break;
         case RK_BATCH_ORIENTATION_FORMAT_FLOAT:
-            orientation_size = sizeof(float) * 3;
+            orientation_size = sizeof(rk_orientation_float);
             break;
         case RK_BATCH_ORIENTATION_FORMAT_INT10:
-            orientation_size = sizeof(rk_uint);
+            orientation_size = sizeof(rk_orientation_int10);
             break;
         default:
             rk_printf("rk_create_batch(): invalid orientation format.");
@@ -433,10 +424,10 @@ rk_batch_t rk_create_batch(
     glEnableVertexAttribArray(translation_layout);
     switch (translation_format) {
         case RK_BATCH_TRANSLATION_FORMAT_FLOAT:
-            glVertexAttribFormat(translation_layout, 4, GL_FLOAT, GL_FALSE, 0);
+            glVertexAttribFormat(translation_layout, 3, GL_FLOAT, GL_FALSE, 0);
             break;
         case RK_BATCH_TRANSLATION_FORMAT_SHORT:
-            glVertexAttribFormat(translation_layout, 4, GL_SHORT, GL_FALSE, 0);
+            glVertexAttribFormat(translation_layout, 3, GL_SHORT, GL_FALSE, 0);
             break;
     }
     glVertexAttribBinding(translation_layout, RK_PARAMS_BINDING);
@@ -549,13 +540,12 @@ static void rk_batch_convert_params(
     rk_ushort const * const _indices,
     rk_ubyte * const _params,
     rk_vec3 const * const translations,
-    rk_ushort const * const texlevels,
     rk_vec3 const * const orientations) {
     _instance_params_t * params = reinterpret_cast<_instance_params_t *>(_params);
     rk_ushort const * const last = _indices + count;
     for (rk_ushort const * indices = _indices; indices < last; ++indices, ++params) {
         rk_uint const index = *indices;
-        params->set(translations[index], texlevels[index], orientations[index]);
+        params->set(translations[index], orientations[index]);
     }
 }
 
@@ -564,13 +554,12 @@ static void rk_batch_convert_params(
     rk_uint const count,
     rk_ushort const * const _indices,
     rk_ubyte * const _params,
-    rk_vec3 const * const translations,
-    rk_ushort const * const texlevels) {
+    rk_vec3 const * const translations) {
     _instance_params_t * params = reinterpret_cast<_instance_params_t *>(_params);
     rk_ushort const * const last = _indices + count;
     for (rk_ushort const * indices = _indices; indices < last; ++indices, ++params) {
         rk_uint const index = *indices;
-        params->set(translations[index], texlevels[index]);
+        params->set(translations[index]);
     }
 }
 
@@ -578,12 +567,11 @@ void rk_draw_batch(
     rk_batch_t _batch,
     rk_uint size,
     rk_instance_flags const * flags,
-    rk_ushort const * texlevels,
     rk_mesh const * meshes,
     rk_vec3 const * translations,
     rk_vec3 const * orientations) {
     rk_batch & batch = *reinterpret_cast<rk_batch *>(_batch);
-    if (!size || size > batch.size || !flags || !texlevels || !meshes || !translations ||
+    if (!size || size > batch.size || !flags || !meshes || !translations ||
         !rk_current_shader || !rk_current_vertices) {
         return;
     }
@@ -604,15 +592,15 @@ void rk_draw_batch(
             switch (batch.orientation_format) {
                 case RK_BATCH_ORIENTATION_FORMAT_NONE:
                     rk_batch_convert_params<rk_translation_float>(
-                        count, batch.indices, batch.params, translations, texlevels);
+                        count, batch.indices, batch.params, translations);
                     break;
                 case RK_BATCH_ORIENTATION_FORMAT_FLOAT:
                     rk_batch_convert_params<rk_params_float_float>(
-                        count, batch.indices, batch.params, translations, texlevels, orientations);
+                        count, batch.indices, batch.params, translations, orientations);
                     break;
                 case RK_BATCH_ORIENTATION_FORMAT_INT10:
                     rk_batch_convert_params<rk_params_float_int10>(
-                        count, batch.indices, batch.params, translations, texlevels, orientations);
+                        count, batch.indices, batch.params, translations, orientations);
                     break;
             }
             break;
@@ -620,15 +608,15 @@ void rk_draw_batch(
             switch (batch.orientation_format) {
                 case RK_BATCH_ORIENTATION_FORMAT_NONE:
                     rk_batch_convert_params<rk_translation_short>(
-                        count, batch.indices, batch.params, translations, texlevels);
+                        count, batch.indices, batch.params, translations);
                     break;
                 case RK_BATCH_ORIENTATION_FORMAT_FLOAT:
                     rk_batch_convert_params<rk_params_short_float>(
-                        count, batch.indices, batch.params, translations, texlevels, orientations);
+                        count, batch.indices, batch.params, translations, orientations);
                     break;
                 case RK_BATCH_ORIENTATION_FORMAT_INT10:
                     rk_batch_convert_params<rk_params_short_int10>(
-                        count, batch.indices, batch.params, translations, texlevels, orientations);
+                        count, batch.indices, batch.params, translations, orientations);
                     break;
             }
             break;
diff --git a/cpp/opengl/render_opengles.hpp b/cpp/opengl/render_opengles.hpp
index 00e4477..18589fa 100644
--- a/cpp/opengl/render_opengles.hpp
+++ b/cpp/opengl/render_opengles.hpp
@@ -76,11 +76,9 @@ struct rk_batch {
 
 struct rk_translation_float {
     rk_vec3 xyz;
-    float l;
 
-    inline void set(rk_vec3 const & translation, rk_ushort const texlevel) {
+    inline void set(rk_vec3 const & translation) {
         xyz = translation;
-        l = static_cast<float>(texlevel);
     }
 };
 
@@ -88,13 +86,13 @@ struct rk_translation_short {
     rk_short x;
     rk_short y;
     rk_short z;
-    rk_ushort l;
+    rk_short pad;
 
-    inline void set(rk_vec3 const & translation, rk_ushort const texlevel) {
+    inline void set(rk_vec3 const & translation) {
         x = static_cast<rk_short>(translation.x);
         y = static_cast<rk_short>(translation.y);
         z = static_cast<rk_short>(translation.z);
-        l = texlevel;
+        pad = 0;
     }
 };
 
@@ -106,7 +104,6 @@ struct rk_orientation_float {
     }
 };
 
-
 struct rk_orientation_int10 {
     rk_uint xyz;
 
@@ -122,8 +119,8 @@ struct rk_params {
     _translation_t translation;
     _orientation_t orientation;
 
-    inline void set(rk_vec3 const & translation, rk_ushort const texlevel, rk_vec3 const & orientation) {
-        this->translation.set(translation, texlevel);
+    inline void set(rk_vec3 const & translation, rk_vec3 const & orientation) {
+        this->translation.set(translation);
         this->orientation.set(orientation);
     }
 };
diff --git a/cpp/render.hpp b/cpp/render.hpp
index d2c8df1..6003f97 100644
--- a/cpp/render.hpp
+++ b/cpp/render.hpp
@@ -47,10 +47,12 @@ enum rk_texture_flags : rk_uint {
 
 enum rk_vertex_format : rk_ubyte {
     RK_VERTEX_FORMAT_END = 0,
-    RK_VERTEX_FORMAT_VEC2_FLOAT = 1,
-    RK_VERTEX_FORMAT_VEC2_USHORT = 2,
-    RK_VERTEX_FORMAT_VEC3_FLOAT = 3,
-    RK_VERTEX_FORMAT_VEC3_INT10 = 4,
+    RK_VERTEX_FORMAT_VEC3_FLOAT = 1,
+    RK_VERTEX_FORMAT_VEC3_INT10 = 2,
+    RK_VERTEX_FORMAT_VEC3_UINT10 = 3,
+
+    RK_VERTEX_FORMAT_NORMALIZE = RK_FLAG(7),
+    RK_VERTEX_FORMAT_MASK = RK_VERTEX_FORMAT_NORMALIZE - 1
 };
 
 enum rk_instance_flags : rk_ubyte {
@@ -155,7 +157,6 @@ RK_EXPORT void rk_draw_batch(
     rk_batch_t batch,
     rk_uint size,
     rk_instance_flags const * flags,
-    rk_ushort const * texlevels,
     rk_mesh const * meshes,
     rk_vec3 const * translations,
     rk_vec3 const * orientations);