Draw Triangle with Modern OpenGL

OpenGL/Source/Application.cpp

@@ -29,17 +29,27 @@ int main()
 
     std::cout << glGetString(GL_VERSION) << std::endl;
 
+    float positions[6] = {
+        -0.5f, -0.5f,
+         0.0f, 0.5f,
+         0.5f, -0.5f
+    };
+
+    unsigned int buffer;
+    glGenBuffers(1, &buffer);
+    glBindBuffer(GL_ARRAY_BUFFER, buffer);
+    glBufferData(GL_ARRAY_BUFFER, 6 * sizeof(float), positions, GL_STATIC_DRAW);
+
+    glEnableVertexAttribArray(0);
+    glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, sizeof(float) * 2, 0);
+
     /* Loop until the user closes the window */
     while (!glfwWindowShouldClose(window))
     {
         /* Render here */
         glClear(GL_COLOR_BUFFER_BIT);
 
-        glBegin(GL_TRIANGLES);
+        glDrawArrays(GL_TRIANGLES, 0, 3);
-        glVertex2f(-0.5f, -0.5f);
-        glVertex2f(0.0f, 0.5f);
-        glVertex2f(0.5f, -0.5f);
-        glEnd();
 
         /* Swap front and back buffers */
         glfwSwapBuffers(window);