diff --git a/.idea/.name b/.idea/.name
new file mode 100644
index 0000000..4ce9e08
--- /dev/null
+++ b/.idea/.name
@@ -0,0 +1 @@
+gl_template
\ No newline at end of file
diff --git a/framework/include/framework.h b/framework/include/framework.h
index 0a76d8c..5d105c4 100644
--- a/framework/include/framework.h
+++ b/framework/include/framework.h
@@ -11,6 +11,9 @@ private:
     GLFWwindow *_window = nullptr;
     int _gl_major, _gl_minor;
     std::string _title;
+    float _last_time = 0, _time = 0, _rate = 1;
+    float _last_glfw_time = 0, _glfw_time = 0;
+    int _frame = 0;
 
     static void onKey(GLFWwindow *window, int key, int scan_code, int action, int mods);
 
@@ -23,6 +26,12 @@ private:
 protected:
     App(int gl_major, int gl_minor);
 
+    void setTime(float time);
+
+    void setFrame(int frame);
+
+    void setRate(float rate);
+
     void setTitle(std::string title);
 
     void setX(int x);
@@ -56,6 +65,14 @@ protected:
 public:
     GLFWwindow *getWindow();
 
+    int getFrame();
+
+    float getRate();
+
+    float getTime();
+
+    float getTimeDelta();
+
     std::string getTitle();
 
     int getX();
diff --git a/framework/include/util.h b/framework/include/util.h
index b534058..e74457d 100644
--- a/framework/include/util.h
+++ b/framework/include/util.h
@@ -1,3 +1,7 @@
+#include <utility>
+
+#include <utility>
+
 #ifndef GL_TEMPLATE_UTIL_H
 #define GL_TEMPLATE_UTIL_H
 
@@ -5,7 +9,6 @@
 
 #include <glad/glad.h>
 
-#include <initializer_list>
 #include <string>
 #include <vector>
 
@@ -15,13 +18,22 @@ namespace util {
         glBufferData(target, data.size() * sizeof(T), &data.front(), usage);
     }
 
-    void shaderFile(GLuint shader, const std::string &path) {
-        const std::string str = readFile(path);
-        const char *c_str = str.c_str();
-        glShaderSource(shader, 1, &c_str, nullptr);
+    template<typename T>
+    void bufferData(GLenum target, T &data, GLenum usage) {
+        glBufferData(target, sizeof(T), &data, usage);
     }
 
-    const std::string shaderInfoLog(GLuint shader) {
+    void shaderFiles(GLuint shader, std::vector<std::string> &paths) {
+        std::vector<std::string> strs;
+        std::vector<const char *> c_strs;
+
+        for (const auto &path : paths) strs.push_back(readFile(path));
+        for (const auto &str:strs) c_strs.push_back(str.c_str());
+
+        glShaderSource(shader, (GLsizei) c_strs.size(), &c_strs.front(), nullptr);
+    }
+
+    std::string shaderInfoLog(GLuint shader) {
         GLint log_len;
         glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &log_len);
         char log[log_len];
@@ -29,7 +41,7 @@ namespace util {
         return std::string(log);
     }
 
-    const std::string programInfoLog(GLuint program) {
+    std::string programInfoLog(GLuint program) {
         GLint log_len;
         glGetProgramiv(program, GL_INFO_LOG_LENGTH, &log_len);
         char log[log_len];
@@ -37,28 +49,17 @@ namespace util {
         return std::string(log);
     }
 
-    GLuint buildShader(const std::string &path) {
-        std::string ext = path.substr(path.rfind("."));
-
-        GLenum kind;
-        if (ext == ".vert") {
-            kind = GL_VERTEX_SHADER;
-        } else if (ext == ".frag") {
-            kind = GL_FRAGMENT_SHADER;
-        } else {
-            fprintf(stderr, "Cannot parse path %s\n", path.c_str());
-            return 0;
-        }
-
+    GLuint buildShader(GLenum kind, const std::string &name, std::vector<std::string> paths) {
         GLuint shader = glCreateShader(kind);
-        util::shaderFile(shader, path);
+        shaderFiles(shader, paths);
+
         glCompileShader(shader);
 
         GLint comp;
         glGetShaderiv(shader, GL_COMPILE_STATUS, &comp);
         if (!comp) {
-            const std::string log = shaderInfoLog(shader);
-            fprintf(stderr, "SHADER ERROR: %s\n%s", path.c_str(), log.c_str());
+            std::string log = shaderInfoLog(shader);
+            fprintf(stderr, "SHADER ERROR (%s):\n%s", name.c_str(), log.c_str());
             glDeleteShader(shader);
             return 0;
         }
@@ -66,9 +67,39 @@ namespace util {
         return shader;
     }
 
-    GLuint buildProgram(std::initializer_list<GLuint> shaders) {
+    GLuint buildShader(GLenum kind, const std::vector<std::string> &paths) {
+        switch (kind) {
+        case GL_VERTEX_SHADER:
+            return buildShader(kind, "VERTEX", paths);
+        case GL_FRAGMENT_SHADER:
+            return buildShader(kind, "FRAGMENT", paths);
+        default:
+            return buildShader(kind, "?", paths);
+        }
+    }
+
+    GLuint buildShader(const std::string &path) {
+        std::string ext = path.substr(path.rfind('.'));
+        std::string name;
+
+        std::vector<std::string> paths{path};
+
+        if (ext == ".vert") {
+            return buildShader(GL_VERTEX_SHADER, paths);
+        } else if (ext == ".frag") {
+            return buildShader(GL_FRAGMENT_SHADER, paths);
+        } else {
+            fprintf(stderr, "Cannot parse path %s\n", path.c_str());
+            return 0;
+        }
+    }
+
+    GLuint buildProgram(bool separable, std::vector<GLuint> shaders) {
         GLuint program = glCreateProgram();
 
+        if (separable)
+            glProgramParameteri(program, GL_PROGRAM_SEPARABLE, GL_TRUE);
+
         for (GLuint shader : shaders)
             glAttachShader(program, shader);
 
@@ -77,7 +108,7 @@ namespace util {
         GLint link;
         glGetProgramiv(program, GL_LINK_STATUS, &link);
         if (!link) {
-            const std::string log = programInfoLog(program);
+            std::string log = programInfoLog(program);
             fprintf(stderr, "PROGRAM ERROR:\n%s", log.c_str());
             glDeleteProgram(program);
             return 0;
diff --git a/framework/src/framework.cpp b/framework/src/framework.cpp
index 61e22f1..bbeb0cd 100644
--- a/framework/src/framework.cpp
+++ b/framework/src/framework.cpp
@@ -7,6 +7,18 @@ App::App(int gl_major, int gl_minor) {
     _gl_minor = gl_minor;
 }
 
+void App::setFrame(int frame) {
+    _frame = frame;
+}
+
+void App::setTime(float time) {
+    _time = time;
+}
+
+void App::setRate(float rate) {
+    _rate = rate;
+}
+
 void App::setTitle(std::string title) {
     _title = title;
     glfwSetWindowTitle(getWindow(), title.c_str());
@@ -44,6 +56,22 @@ GLFWwindow *App::getWindow() {
     return _window;
 }
 
+int App::getFrame() {
+    return _frame;
+}
+
+float App::getTime() {
+    return _time;
+}
+
+float App::getRate() {
+    return _rate;
+}
+
+float App::getTimeDelta() {
+    return _time - _last_time;
+}
+
 std::string App::getTitle() {
     return _title;
 }
@@ -139,6 +167,8 @@ int App::run() {
     if (!(_window = glfwCreateWindow(1280, 720, _title.c_str(), nullptr, nullptr)))
         return EXIT_FAILURE;
 
+    _last_glfw_time = (float) glfwGetTime();
+
     center();
 
     glfwSetWindowSizeCallback(getWindow(), App::onSize);
@@ -152,10 +182,19 @@ int App::run() {
 
     init();
 
+    _last_time = _time = 0;
+
     manager[getWindow()] = this;
     while (!glfwWindowShouldClose(_window)) {
+        _glfw_time = (float) glfwGetTime();
+
+        _time += (_glfw_time - _last_glfw_time) * _rate;
+
         display();
 
+        _last_time = _time;
+        _last_glfw_time = _glfw_time;
+
         glfwPollEvents();
     };
     manager.erase(getWindow());
diff --git a/glapp/src/main.cpp b/glapp/src/main.cpp
index cf973ea..c180436 100644
--- a/glapp/src/main.cpp
+++ b/glapp/src/main.cpp
@@ -102,7 +102,7 @@ protected:
         glBindBuffer(GL_ARRAY_BUFFER, circle_vert_buf);
         util::bufferData(GL_ARRAY_BUFFER, vertices, GL_STATIC_DRAW);
 
-        program = util::buildProgram({
+        program = util::buildProgram(false, {
             vertex_shader = util::buildShader("shaders/main.vert"),
             fragment_shader = util::buildShader("shaders/main.frag"),
         });
@@ -133,9 +133,7 @@ protected:
         int width, height;
         float ratio;
 
-        glfwGetFramebufferSize(getWindow(), &width, &height
-
-        );
+        glfwGetFramebufferSize(getWindow(), &width, &height);
         ratio = (float) width / height;
         glViewport(0, 0, width, height);
 
@@ -143,7 +141,7 @@ protected:
 
         mats.proj = glm::ortho(-ratio, ratio, -1.f, 1.f);
         mats.view = glmutil::scale(glm::vec3(0.9f)) * glmutil::eulerAngles(glm::vec3(angles.y, 0, angles.x));
-        mats.model = glmutil::rotation((float) glfwGetTime(), glm::vec3(0.0f, 0.0f, 1.0f));
+        mats.model = glmutil::rotation(getTime(), glm::vec3(0.0f, 0.0f, 1.0f));
 
         glBindBuffer(GL_UNIFORM_BUFFER, matrix_buffer);
         glBufferData(GL_UNIFORM_BUFFER, sizeof(Matrices), &mats, GL_DYNAMIC_DRAW);
@@ -173,7 +171,6 @@ public:
 
 
 int main() {
-    GLApp
-        app = GLApp();
+    GLApp app = GLApp();
     app.launch();
 }
\ No newline at end of file