diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ae94f15..c232a6b 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -9,7 +9,7 @@ add_subdirectory(core)
 
 #add_subdirectory(ui)
 # add_subdirectory(binding)
-# add_subdirectory(visual)
+add_subdirectory(visual)
 # add_subdirectory(geometry)
 
 # add_subdirectory(runtime)
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index bd7b93b..7c77e34 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -17,7 +17,7 @@ set(hdrs
     include/pw/core/serialize.hpp
     include/pw/core/size.hpp
     include/pw/core/time.hpp
-    include/pw/core/geometry.hpp
+    include/pw/core/primitives.hpp
     include/pw/core/image.hpp
     include/pw/core/vector.hpp
     include/pw/core/matrix_transform.hpp
diff --git a/src/core/include/pw/core/color.hpp b/src/core/include/pw/core/color.hpp
index 6af8e64..6f017ec 100644
--- a/src/core/include/pw/core/color.hpp
+++ b/src/core/include/pw/core/color.hpp
@@ -29,7 +29,7 @@
 
 namespace pw {
 
-struct color {
+struct color final {
 
     vector4f rgba{vector4f::all(1)};
 
diff --git a/src/core/include/pw/core/frustum.hpp b/src/core/include/pw/core/frustum.hpp
index 1587894..7e66a97 100644
--- a/src/core/include/pw/core/frustum.hpp
+++ b/src/core/include/pw/core/frustum.hpp
@@ -36,7 +36,8 @@ template <std::floating_point Scalar> struct frustum final {
                                                      Scalar aspect_ratio,
                                                      Scalar z_near,
                                                      Scalar z_far) -> frustum {
-        const auto tangent_half{std::tan(pw::deg_to_rad(fov_h_deg / Scalar{2}))};
+        const auto tangent_half{
+            std::tan(pw::deg_to_rad(fov_h_deg / Scalar{2}))};
         const auto top{tangent_half * z_near};
         const auto right{top * aspect_ratio};
 
diff --git a/src/core/include/pw/core/matrix.hpp b/src/core/include/pw/core/matrix.hpp
index 38e91f4..864dbf8 100644
--- a/src/core/include/pw/core/matrix.hpp
+++ b/src/core/include/pw/core/matrix.hpp
@@ -258,6 +258,22 @@ constexpr auto operator*(const matrix<ScalarA, Ra, Ca>& A,
     return result;
 }
 
+//
+// matrix aliases
+//
+
+template <typename Scalar> using matrix2x2 = matrix<Scalar, 2, 2>;
+template <typename Scalar> using matrix3x3 = matrix<Scalar, 3, 3>;
+template <typename Scalar> using matrix4x4 = matrix<Scalar, 4, 4>;
+
+using matrix2x2f = matrix2x2<float>;
+using matrix3x3f = matrix3x3<float>;
+using matrix4x4f = matrix4x4<float>;
+
+using matrix2x2d = matrix2x2<double>;
+using matrix3x3d = matrix3x3<double>;
+using matrix4x4d = matrix4x4<double>;
+
 } // namespace pw
 
 //
diff --git a/src/core/include/pw/core/mesh.hpp b/src/core/include/pw/core/mesh.hpp
index 8559dfc..9492013 100644
--- a/src/core/include/pw/core/mesh.hpp
+++ b/src/core/include/pw/core/mesh.hpp
@@ -8,8 +8,8 @@
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
@@ -24,9 +24,41 @@
 #define PW_CORE_MESH_HPP
 
 #include <pw/core/globals.hpp>
+#include <pw/core/primitives.hpp>
+
+#include <atomic>
 
 namespace pw {
 
+struct attribute final {
+    using mask_type    = std::vector<bool>;
+    using int8_type    = std::vector<int8_t>;
+    using int32_type   = std::vector<int32_t>;
+    using float_type   = std::vector<float>;
+    using vector2_type = std::vector<vector2<float>>;
+    using vector3_type = std::vector<vector3<float>>;
+    using vector4_type = std::vector<vector4<float>>;
+
+    using attribute_data =
+        std::variant<std::monostate, mask_type, int8_type, int32_type,
+                     float_type, vector2_type, vector3_type, vector4_type>;
+
+    enum attribute_type {
+        normals,
+        texture_coordinates,
+    };
+
+    attribute_type type{};
+    attribute_data data{};
+};
+
+struct mesh {
+    primitives geometry{};
+    std::vector<attribute> attributes;
+
+    std::atomic<uint64_t> change_count{0};
+};
+
 } // namespace pw
 
 #endif
diff --git a/src/core/include/pw/core/point.hpp b/src/core/include/pw/core/point.hpp
index d01e05f..f85e4a6 100644
--- a/src/core/include/pw/core/point.hpp
+++ b/src/core/include/pw/core/point.hpp
@@ -8,8 +8,8 @@
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
@@ -27,25 +27,18 @@
 
 namespace pw {
 
-template <typename T_>
-struct point_ {
+template <typename Scalar> struct point final {
 
-    using value_type = T_;
+    using value_type = Scalar;
 
-    T_ x {0}, y {0};
-
-    template <typename To_>
-    point_<To_> cast() const { return point_<To_>(static_cast<To_>(x),static_cast<To_>(y)); }
+    Scalar x{}, y{};
 
+    template <typename ScalarOut>
+    constexpr auto cast() const noexcept -> point<ScalarOut> {
+        return {.x{ScalarOut(x)}, .y{ScalarOut(y)}};
+    }
 };
 
-using point = point_<real_t>;
-
-using pointf = point_<float>;
-using pointd = point_<double>;
-using pointi = point_<int>;
-
-
-}
+} // namespace pw
 
 #endif
diff --git a/src/core/include/pw/core/rectangle.hpp b/src/core/include/pw/core/rectangle.hpp
index 96eef21..3e86420 100644
--- a/src/core/include/pw/core/rectangle.hpp
+++ b/src/core/include/pw/core/rectangle.hpp
@@ -8,8 +8,8 @@
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
@@ -23,53 +23,28 @@
 #ifndef PW_CORE_RECTANGLE_HPP
 #define PW_CORE_RECTANGLE_HPP
 
-#include <initializer_list>
-
 #include <pw/core/point.hpp>
 #include <pw/core/size.hpp>
 
 namespace pw {
 
-template <typename T_>
-struct rectangle_ {
+template <typename Scalar> struct rectangle final {
 
-    point_<T_> position;
-    size_<T_> size;
+    point<Scalar> position{};
+    size<Scalar> size{};
 
-    rectangle_() = default;
-
-    rectangle_(const T_ l[4])
-        : position(point_<T_>(l[0],l[1]))
-        , size(size_<T_>(l[2],l[3]))
-    {
-    }
-
-    rectangle_(const T_(&l)[4])
-        : position(point_<T_>(l[0],l[1]))
-        , size(size_<T_>(l[2],l[3]))
-    {
-    }
-
-    rectangle_(point_<T_> const & p,size_<T_> const & s) : size(s), position(p) {}
-
-    bool contains(const point_<T_>& p) const noexcept
-    {
+    constexpr bool contains(const point<Scalar>& p) const noexcept {
         return p.x >= position.x && p.x <= position.x + size.width &&
-                p.y >= position.y && p.y <= position.y + size.height;
+               p.y >= position.y && p.y <= position.y + size.height;
     }
 
-    template <typename To_>
-    rectangle_<To_> cast() const
-    {
-        return rectangle_<To_>(position.template cast<To_>(),size.template cast<To_>());
+    template <typename ScalarOut>
+    constexpr auto cast() const noexcept -> rectangle<ScalarOut> {
+        return {.position = position.template cast<ScalarOut>(),
+                .size     = size.template cast<ScalarOut>()};
     }
 };
 
-using rectangle  = rectangle_<real_t>;
-using rectanglei = rectangle_<int>;
-using rectanglef = rectangle_<float>;
-using rectangled = rectangle_<double>;
-
-}
+} // namespace pw
 
 #endif
diff --git a/src/core/include/pw/core/size.hpp b/src/core/include/pw/core/size.hpp
index 70f21ca..f1afa2f 100644
--- a/src/core/include/pw/core/size.hpp
+++ b/src/core/include/pw/core/size.hpp
@@ -42,8 +42,15 @@ template <typename Scalar> struct size {
         }
     }
 
-    template <typename Other> constexpr auto operator()() const noexcept {
-        return Other{width, height};
+    template <typename ScalarOut>
+    constexpr auto cast(this auto&& self) noexcept -> size<ScalarOut> {
+        return {.width  = ScalarOut(self.width),
+                .height = ScalarOut(self.height)};
+    }
+
+    template <typename Other>
+    constexpr auto operator()(this auto&& self) noexcept {
+        return Other{self.width, self.height};
     }
 };
 
diff --git a/src/core/tests/pwcore_test_mesh.cpp b/src/core/tests/pwcore_test_mesh.cpp
index 0e19c12..308deef 100644
--- a/src/core/tests/pwcore_test_mesh.cpp
+++ b/src/core/tests/pwcore_test_mesh.cpp
@@ -3,6 +3,7 @@
 #include <pw/core/primitives.hpp>
 #include <pw/core/serialize.hpp>
 #include <pw/core/vector.hpp>
+#include <pw/core/mesh.hpp>
 
 #include <print>
 #include <variant>
@@ -10,33 +11,6 @@
 
 namespace pw {
 
-struct attribute final {
-    using mask_type    = std::vector<bool>;
-    using int8_type    = std::vector<int8_t>;
-    using int32_type   = std::vector<int32_t>;
-    using float_type   = std::vector<float>;
-    using vector2_type = std::vector<vector2<float>>;
-    using vector3_type = std::vector<vector3<float>>;
-    using vector4_type = std::vector<vector4<float>>;
-
-    using attribute_data =
-        std::variant<std::monostate, mask_type, int8_type, int32_type,
-                     float_type, vector2_type, vector3_type, vector4_type>;
-
-    enum attribute_type {
-        normals,
-        texture_coordinates,
-    };
-
-    attribute_type type{};
-    attribute_data data{};
-};
-
-struct mesh_n {
-    primitives geometry{};
-    std::vector<attribute> attributes;
-};
-
 } // namespace pw
 
 auto main() -> int {
@@ -48,7 +22,7 @@ auto main() -> int {
         .indices  = {0, 1, 2},
         .topology = pw::primitives::topology_type::triangle_list};
 
-    auto mesh = pw::mesh_n{.geometry = geom};
+    auto mesh = pw::mesh{.geometry = geom};
 
     mesh.attributes.emplace_back(
         pw::attribute{.type = pw::attribute::normals,
diff --git a/src/visual/include/pw/visual/context.hpp b/src/visual/include/pw/visual/context.hpp
index 5da31d4..c007528 100644
--- a/src/visual/include/pw/visual/context.hpp
+++ b/src/visual/include/pw/visual/context.hpp
@@ -8,8 +8,8 @@
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
  *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
@@ -24,17 +24,15 @@
 #ifndef PW_VISUAL_CONTEXT_HPP
 #define PW_VISUAL_CONTEXT_HPP
 
+#include <pw/core/color.hpp>
 #include <pw/core/point.hpp>
+#include <pw/core/rectangle.hpp>
 #include <pw/core/size.hpp>
 #include <pw/core/vector.hpp>
-#include <pw/core/rectangle.hpp>
-#include <pw/core/color.hpp>
-
 
 namespace pw {
 
-class context {
-public:
+struct context final {
 
     context();
     ~context();
@@ -42,24 +40,24 @@ public:
     void set_blend();
     void set_depth();
 
-    void set_viewport(const rectangle& v);
-    rectangle viewport() const;
+    void set_viewport(const rectangle<int32_t>& v);
+    rectangle<int32_t> viewport() const;
 
-    size viewport_size() const;
-    point viewport_origin() const;
+    size<int32_t> viewport_size() const;
+    point<int32_t> viewport_origin() const;
 
-    void set_clearcolor(const color &c);
+    void set_clearcolor(const color& c);
     color clearcolor() const;
 
     void clear();
 
     uint32_t get_error() const;
 
-protected:
+  protected:
     struct impl;
     std::unique_ptr<impl> _impl;
 };
 
-}
+} // namespace pw
 
 #endif
diff --git a/src/visual/include/pw/visual/framebuffer.hpp b/src/visual/include/pw/visual/framebuffer.hpp
index 2052fa9..9423a09 100644
--- a/src/visual/include/pw/visual/framebuffer.hpp
+++ b/src/visual/include/pw/visual/framebuffer.hpp
@@ -6,22 +6,20 @@
 
 namespace pw {
 
-class framebuffer {
-public:
+struct framebuffer final {
     framebuffer();
     ~framebuffer();
 
-    bool create(const size& s);
+    bool create(const size<int32_t>& s);
 
     void bind();
     void blit();
     void unbind();
 
-protected:
-
+  protected:
     struct impl;
     std::unique_ptr<impl> _impl;
 };
 
-}
+} // namespace pw
 #endif
diff --git a/src/visual/include/pw/visual/renderer.hpp b/src/visual/include/pw/visual/renderer.hpp
index ccd9a11..8748bdd 100644
--- a/src/visual/include/pw/visual/renderer.hpp
+++ b/src/visual/include/pw/visual/renderer.hpp
@@ -6,26 +6,23 @@
 
 namespace pw {
 
-struct geometry;
+struct mesh;
 
 /**
- * @brief builds a renderer for geometry
+ * @brief builds a renderer for meshes
  */
 struct renderer final {
     renderer();
-    renderer(const geometry& m);
+    renderer(const mesh& m);
 
     ~renderer();
 
-    bool update(const geometry& m);
+    bool update(const mesh& m);
     void release();
 
     void draw();
     bool ready() const;
 
-    uint64_t change_count() const;
-    void set_change_count(uint64_t n);
-
   protected:
     struct impl;
     std::unique_ptr<impl> _impl;
diff --git a/src/visual/src/context.cpp b/src/visual/src/context.cpp
index 49cff8b..801a670 100644
--- a/src/visual/src/context.cpp
+++ b/src/visual/src/context.cpp
@@ -2,6 +2,7 @@
 #include "pw/core/vector.hpp"
 
 #include "glad/glad.h"
+#include <cstdint>
 
 
 namespace pw {
@@ -10,16 +11,16 @@ struct context::impl {
 
     vector4f _clear_color { 0, 1, 0, 1};
 
-    void set_viewport(const rectangle& v)
+    void set_viewport(const rectangle<int32_t>& v)
     {
         glViewport(v.position.x,v.position.y,v.size.width,v.size.height);
     }
 
-    const rectangle viewport()
+    const rectangle<int32_t> viewport()
     {
-        float _viewport[4] = {0,0,1,1};
-        glGetFloatv(GL_VIEWPORT,&_viewport[0]);
-        return rectangle(_viewport);
+        auto vp = rectangle<float>{0,0,1,1};
+        glGetFloatv(GL_VIEWPORT,static_cast<float*>(&vp.position.x));
+        return vp.cast<int32_t>();
     }
 
     void clear()
@@ -56,12 +57,12 @@ void context::set_blend()
 
 }
 
-void context::set_viewport(const rectangle& v)
+void context::set_viewport(const rectangle<int32_t>& v)
 {
     _impl->set_viewport(v);
 }
 
-rectangle context::viewport() const
+rectangle<int32_t> context::viewport() const
 {
     return _impl->viewport();
 }
@@ -78,15 +79,14 @@ u_int32_t context::get_error() const
 
 color context::clearcolor() const
 {
-    return _impl->_clear_color;
+    // return _impl->_clear_color;
+    return color{};
 }
 
 void context::set_clearcolor(const color& c)
 {
-    _impl->_clear_color = c;
+    // _impl->_clear_color = c;
 }
 
 
 }
-
-
diff --git a/src/visual/src/framebuffer.cpp b/src/visual/src/framebuffer.cpp
index d0719c5..d3c39c4 100644
--- a/src/visual/src/framebuffer.cpp
+++ b/src/visual/src/framebuffer.cpp
@@ -5,6 +5,7 @@
 
 #include "glad/glad.h"
 
+#include <cstdint>
 #include <limits>
 
 namespace pw {
@@ -13,7 +14,7 @@ namespace pw {
 
 struct framebuffer::impl {
 
-    size _size;
+    size<int32_t> _size;
 
     GLuint _fbo_draw { std::numeric_limits<GLuint>::max() };
     GLuint _fbo_msaa { std::numeric_limits<GLuint>::max() };
@@ -21,7 +22,7 @@ struct framebuffer::impl {
     GLuint _rbo_color { std::numeric_limits<GLuint>::max() };
     GLuint _rbo_depth { std::numeric_limits<GLuint>::max() };
 
-    bool create(const size &s)
+    bool create(const size<int32_t> &s)
     {
         // TODO  mak color resolution and
         _size = s;
@@ -107,7 +108,7 @@ framebuffer::~framebuffer()
 {
 }
 
-bool framebuffer::create(const size &s)
+bool framebuffer::create(const size<int32_t> &s)
 {
     return _impl->create(s);
 }
diff --git a/src/visual/src/renderer.cpp b/src/visual/src/renderer.cpp
index 7157fc4..e85188d 100644
--- a/src/visual/src/renderer.cpp
+++ b/src/visual/src/renderer.cpp
@@ -1,19 +1,21 @@
 #include "pw/visual/renderer.hpp"
 
 #include "pw/core/debug.hpp"
-#include "pw/core/geometry.hpp"
 #include "pw/core/matrix.hpp"
+#include "pw/core/mesh.hpp"
+#include "pw/core/primitives.hpp"
 #include "pw/core/size.hpp"
 
 #include "glad/glad.h"
 
 #include <algorithm>
+#include <atomic>
 
 namespace pw {
 
 struct renderer::impl {
 
-    uint64_t _change_count{0};
+    std::atomic<uint64_t> change_count{};
 
     uint32_t _vao{0};
     uint32_t _ebo{0};
@@ -29,15 +31,15 @@ struct renderer::impl {
         return glIsVertexArray != nullptr && GL_TRUE == glIsVertexArray(_vao);
     }
 
-    bool update(const geometry& m) {
-        if (_change_count == m.change_count())
+    bool update(const mesh& m) {
+        if (this->change_count == m.change_count)
             return false;
 
         // reset if the renderer already in use
         if (ready())
             release();
 
-        _mesh_elements = m.indices().size();
+        _mesh_elements = m.geometry.indices.size();
 
         //
         glGenVertexArrays(1, &_vao);
@@ -51,31 +53,34 @@ struct renderer::impl {
         // indices
         glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _ebo);
         glBufferData(GL_ELEMENT_ARRAY_BUFFER,
-                     m.indices().size() * sizeof(uint32_t), m.indices().data(),
-                     GL_STATIC_DRAW);
+                     m.geometry.indices.size() * sizeof(uint32_t),
+                     m.geometry.indices.data(), GL_STATIC_DRAW);
 
         _vbos.resize(_vbos.size() + 1);
         glGenBuffers(1, &_vbos.back());
 
         // vertices
         glBindBuffer(GL_ARRAY_BUFFER, _vbos.back());
-        glVertexAttribPointer(_vbos.size() - 1, vector3::coefficients, GL_FLOAT,
+        glVertexAttribPointer(_vbos.size() - 1, vector3f::coefficients, GL_FLOAT,
                               GL_FALSE, 0, nullptr);
-        glBufferData(GL_ARRAY_BUFFER, m.vertices().size() * sizeof(vector3),
-                     m.vertices().data(), GL_STATIC_DRAW);
+        glBufferData(GL_ARRAY_BUFFER,
+                     m.geometry.vertices.size() * sizeof(vector3f),
+                     m.geometry.vertices.data(), GL_STATIC_DRAW);
         glEnableVertexAttribArray(_vbos.size() - 1);
 
         debug::d() << "vertices at " << _vbos.size() - 1;
 
+#if 0
+
         if (!m.normals().empty()) {
             _vbos.resize(_vbos.size() + 1);
             glGenBuffers(1, &_vbos.back());
 
             // normals
             glBindBuffer(GL_ARRAY_BUFFER, _vbos.back());
-            glVertexAttribPointer(_vbos.size() - 1, vector3::coefficients,
+            glVertexAttribPointer(_vbos.size() - 1, vector3f::coefficients,
                                   GL_FLOAT, GL_FALSE, 0, nullptr);
-            glBufferData(GL_ARRAY_BUFFER, m.normals().size() * sizeof(vector3),
+            glBufferData(GL_ARRAY_BUFFER, m.normals().size() * sizeof(vector3f),
                          m.normals().data(), GL_STATIC_DRAW);
             glEnableVertexAttribArray(_vbos.size() - 1);
 
@@ -99,10 +104,12 @@ struct renderer::impl {
             }
         }
 
+#endif
+
         // stop binding
         glBindVertexArray(0);
 
-        this->_change_count = m.change_count();
+        this->change_count.store(m.change_count.load());
 
 #if 1
         // get errors
@@ -118,7 +125,7 @@ struct renderer::impl {
 
     void release() {
 
-        for (auto & vbo : _vbos)
+        for (auto& vbo : _vbos)
             glDeleteBuffers(1, &vbo);
         glDeleteBuffers(1, &_ebo);
 
@@ -148,7 +155,7 @@ struct renderer::impl {
 
 renderer::renderer() : _impl(std::make_unique<renderer::impl>()) {}
 
-renderer::renderer(const geometry& m) {
+renderer::renderer(const mesh& m) {
     renderer();
     // directly update
     _impl->update(m);
@@ -158,14 +165,10 @@ renderer::~renderer() = default;
 
 bool renderer::ready() const { return _impl->ready(); }
 
-bool renderer::update(const geometry& m) { return _impl->update(m); }
+bool renderer::update(const mesh& m) { return _impl->update(m); }
 
 void renderer::release() { _impl->release(); }
 
 void renderer::draw() { _impl->draw(); }
 
-uint64_t renderer::change_count() const { return _impl->_change_count; }
-
-void renderer::set_change_count(uint64_t n) { _impl->_change_count = n; }
-
 } // namespace pw
diff --git a/src/visual/src/shader.cpp b/src/visual/src/shader.cpp
index d6ba365..2c7c286 100644
--- a/src/visual/src/shader.cpp
+++ b/src/visual/src/shader.cpp
@@ -141,15 +141,15 @@ struct shader::impl {
     }
 
     void bind(int location, const matrix3x3f& m) {
-        glUniformMatrix3fv(location, 1, GL_FALSE, m.ptr());
+        glUniformMatrix3fv(location, 1, GL_FALSE, m.data());
     }
 
     void bind(int location, const matrix4x4f& m) {
-        glUniformMatrix4fv(location, 1, GL_FALSE, m.ptr());
+        glUniformMatrix4fv(location, 1, GL_FALSE, m.data());
     }
 
     void bind(int location, const vector4f& v) {
-        glUniform4fv(location, 1, v.ptr());
+        glUniform4fv(location, 1, v.data());
     }
 
     void bind(int location, const float& v) { glUniform1f(location, v); }