Updated source code to reflect content changes (code re-work): advanced OpenGL and model-loading.

src/4.advanced_opengl/5.2.framebuffers_exercise1/5.2.framebuffers.fs

@@ -0,0 +1,11 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D texture1;
+
+void main()
+{    
+    FragColor = texture(texture1, TexCoords);
+}

src/4.advanced_opengl/5.2.framebuffers_exercise1/5.2.framebuffers.vs

@@ -0,0 +1,15 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec2 aTexCoords;
+
+out vec2 TexCoords;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+    TexCoords = aTexCoords;    
+    gl_Position = projection * view * model * vec4(aPos, 1.0);
+}

src/4.advanced_opengl/5.2.framebuffers_exercise1/5.2.framebuffers_screen.fs

@@ -0,0 +1,12 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec2 TexCoords;
+
+uniform sampler2D screenTexture;
+
+void main()
+{
+    vec3 col = texture(screenTexture, TexCoords).rgb;
+    FragColor = vec4(col, 1.0);
+} 

src/4.advanced_opengl/5.2.framebuffers_exercise1/5.2.framebuffers_screen.vs

@@ -0,0 +1,11 @@
+#version 330 core
+layout (location = 0) in vec2 aPos;
+layout (location = 1) in vec2 aTexCoords;
+
+out vec2 TexCoords;
+
+void main()
+{
+    TexCoords = aTexCoords;
+    gl_Position = vec4(aPos.x, aPos.y, 0.0, 1.0); 
+}  

src/4.advanced_opengl/5.2.framebuffers_exercise1/framebuffers_exercise1.cpp

@@ -45,13 +45,13 @@ int main()
     // glfw window creation
     // --------------------
     GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "LearnOpenGL", NULL, NULL);
-    glfwMakeContextCurrent(window);
     if (window == NULL)
     {
         std::cout << "Failed to create GLFW window" << std::endl;
         glfwTerminate();
         return -1;
     }
+    glfwMakeContextCurrent(window);
     glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
     glfwSetCursorPosCallback(window, mouse_callback);
     glfwSetScrollCallback(window, scroll_callback);
@@ -73,8 +73,8 @@ int main()
 
     // build and compile shaders
     // -------------------------
-    Shader shader("5.1.framebuffers.vs", "5.1.framebuffers.fs");
-    Shader screenShader("5.1.framebuffers_screen.vs", "5.1.framebuffers_screen.fs");
+    Shader shader("5.2.framebuffers.vs", "5.2.framebuffers.fs");
+    Shader screenShader("5.2.framebuffers_screen.vs", "5.2.framebuffers_screen.fs");
 
     // set up vertex data (and buffer(s)) and configure vertex attributes
     // ------------------------------------------------------------------
@@ -338,7 +338,6 @@ void processInput(GLFWwindow *window)
     if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
         glfwSetWindowShouldClose(window, true);
 
-    float cameraSpeed = 2.5 * deltaTime;
     if (glfwGetKey(window, GLFW_KEY_W) == GLFW_PRESS)
         camera.ProcessKeyboard(FORWARD, deltaTime);
     if (glfwGetKey(window, GLFW_KEY_S) == GLFW_PRESS)
@@ -358,7 +357,6 @@ void framebuffer_size_callback(GLFWwindow* window, int width, int height)
     glViewport(0, 0, width, height);
 }
 
-
 // glfw: whenever the mouse moves, this callback is called
 // -------------------------------------------------------
 void mouse_callback(GLFWwindow* window, double xpos, double ypos)