diff --git a/vis/include/cgl/render.hpp b/vis/include/cgl/render.hpp
index a0c1f0a..e608419 100644
--- a/vis/include/cgl/render.hpp
+++ b/vis/include/cgl/render.hpp
@@ -7,12 +7,21 @@
 namespace cgl {
     template<class T>
     class buffer {
-        GLuint id;
+        GLuint id{};
 
     public:
-        buffer() : id(0) {
+        buffer() {
             glCreateBuffers(1, &id);
-            std::cout << "create " << id << std::endl;
+        }
+
+        buffer(const T &data, GLenum usage = GL_STATIC_DRAW)
+            : buffer() {
+            put(data, usage);
+        }
+
+        buffer(const std::vector<T> &data, GLenum usage = GL_STATIC_DRAW)
+            : buffer() {
+            put(data, usage);
         }
 
         buffer(buffer &) = delete;
@@ -29,15 +38,23 @@ namespace cgl {
         operator GLuint() const {
             return id;
         }
+
+        void put(const T &data, GLenum usage = GL_STATIC_DRAW) {
+            glNamedBufferData(id, sizeof(T), &data, usage);
+        }
+
+        void put(const std::vector<T> &data, GLenum usage = GL_STATIC_DRAW) {
+            glNamedBufferData(id, sizeof(T) * data.size(), &data[0], usage);
+        }
     };
 
     class shader {
     protected:
-        GLuint id;
+        GLuint id{};
         GLenum mode;
 
     public:
-        shader(GLenum mode) : mode(mode), id(0) {
+        shader(GLenum mode) : mode(mode) {
             id = glCreateShader(mode);
         }
 
@@ -86,10 +103,10 @@ namespace cgl {
 
     class program {
     protected:
-        GLuint id;
+        GLuint id{};
 
     public:
-        program() : id(0) {
+        program() {
             id = glCreateProgram();
         }
 
@@ -154,10 +171,10 @@ namespace cgl {
 
     class pipeline {
     protected:
-        GLuint id;
+        GLuint id{};
 
     public:
-        pipeline() : id(0) {
+        pipeline() {
             glCreateProgramPipelines(1, &id);
         }
 
diff --git a/vis/src/main.cpp b/vis/src/main.cpp
index 09af24f..a52b4a8 100644
--- a/vis/src/main.cpp
+++ b/vis/src/main.cpp
@@ -128,14 +128,9 @@ void run(GLFWwindow *window) {
 
     //endregion
 
-    GLuint vbo;
-    glGenBuffers(1, &vbo);
-    glBindBuffer(GL_ARRAY_BUFFER, vbo);
-    glBufferData(GL_ARRAY_BUFFER, sizeof(glm::vec4) * points.size(), &points[0], GL_STATIC_DRAW);
-    glBindBuffer(GL_ARRAY_BUFFER, 0);
+    cgl::buffer<glm::vec4> vbo(points);
 
-    GLuint ubo;
-    glGenBuffers(1, &ubo);
+    cgl::buffer<Matrices> ubo;
 
     glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, vbo);
     glBindBufferBase(GL_UNIFORM_BUFFER, 1, ubo);
@@ -151,9 +146,7 @@ void run(GLFWwindow *window) {
 
         auto st = (float) glfwGetTime() / 8;
         Matrices mats = build(window, st);
-        glBindBuffer(GL_UNIFORM_BUFFER, ubo);
-        glBufferData(GL_UNIFORM_BUFFER, sizeof(mats), &mats, GL_STATIC_DRAW);
-        glBindBuffer(GL_UNIFORM_BUFFER, 0);
+        ubo.put(mats);
 
         glLineWidth(1.5);
         const auto wires_dark = glm::vec3(.3, .3, .3);