clean up

shaders/lighting/Frag.glsl

@@ -1,4 +1,11 @@
 #version 330 core
+struct Material {
+  vec3 ambient;
+  vec3 diffuse;
+  vec3 specular;
+  float shininess;
+};
+
 out vec4 FragColor;
 
 in vec3 FragPos;
@@ -8,30 +15,28 @@ uniform vec3 ourColor;
 uniform vec3 lightColor;
 uniform vec3 lightPos;
 uniform vec3 viewPos;
+uniform Material material;
 
 void main()
 {
-  float ambientStrength = 0.15;
-  float specularStrength = 0.5;
-
-  //msc
+  //misc
   vec3 norm = normalize(Normal);
   vec3 lightDir = normalize(lightPos - FragPos);
 
   // ambient
-  vec3 ambient = ambientStrength * lightColor;
+  vec3 ambient = vec3(0.2) * (lightColor * material.ambient);
 
   // diffuse
   float diff = max(dot(norm, lightDir), 0.0);
-  vec3 diffuse = diff * lightColor;
+  vec3 diffuse = lightColor * (diff * material.diffuse);
 
   // specular
   vec3 viewDir = normalize(viewPos - FragPos);
   vec3 reflectDir = reflect(-lightDir, norm);
-  float spec = pow(max(dot(viewDir, reflectDir), 0.0), 150);
-  vec3 specular = specularStrength * spec * lightColor;
+  float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+  vec3 specular = vec3(0.5) * (lightColor * (spec * material.specular));
 
-  // out
-  vec3 result = (ambient + diffuse+specular) * ourColor;
+  //out
+  vec3 result = ambient + diffuse + specular;
   FragColor = vec4(result, 1.0);
 }

src/main.cpp

@@ -12,8 +12,7 @@
 
 void processInput(GLFWwindow *window);
 void framebuffer_size_callback(GLFWwindow *window, int width, int height);
-
-int main(void) {
+GLFWwindow *init() {
   glfwInit();
   glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
   glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
@@ -29,7 +28,10 @@ int main(void) {
 
   glViewport(0, 0, 800, 600);
   glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
+  return window;
+}
 
+unsigned int meshInit() {
   unsigned int VBO, VAO;
   glGenVertexArrays(1, &VAO);
   glBindVertexArray(VAO);
@@ -43,30 +45,32 @@ int main(void) {
                         (void *)(3 * sizeof(float)));
   glEnableVertexAttribArray(0);
   glEnableVertexAttribArray(1);
+  return VAO;
+}
+
+int main(void) {
+  glm::vec3 lightPos = glm::vec3(1, 2.0f, 1);
+  glm::vec3 cameraPos = glm::vec3(2.3, 3, 5);
+  glm::vec3 lightColor = glm::vec3(1);
+
+  GLFWwindow *window = init();
+  Camera *cam = new Camera(cameraPos, -115.0f, -25.0f, 45, 800.0 / 600);
+  glfwSetWindowUserPointer(window, cam);
 
   Shader *cubeShader = new Shader("./shaders/lighting/Vert.glsl",
                                   "./shaders/lighting/Frag.glsl");
-  Mesh *cube = new Mesh(cubeShader, VAO, 36);
-  cube->setOwnedShader(true);
-
   Shader *lightShader = new Shader("./shaders/lighting/Vert.glsl",
                                    "./shaders/lighting/LightFrag.glsl");
+
+  uint VAO = meshInit();
+  Mesh *cube = new Mesh(cubeShader, VAO, 36);
   Mesh *light = new Mesh(lightShader, VAO, 36);
+  cube->setOwnedShader(true);
   light->setOwnedShader(true);
 
-  glm::vec3 lightPos = glm::vec3(1, 2.0f, 1);
   light->setPosition(lightPos);
   light->setScale(glm::vec3(.3));
 
-  Camera *cam =
-      new Camera(glm::vec3(0.0, 0.0, 5.0), -90.0f, 0.0f, 45.0, 800.0 / 600);
-  glfwSetWindowUserPointer(window, cam);
-
-  glm::vec3 cPos = glm::vec3(2.3, 3, 5);
-  cam->setPos(cPos);
-  cam->setRotate(-90.0f - 25.0f, -25.0f);
-
-  glm::vec3 lightc = glm::vec3(1);
   glEnable(GL_DEPTH_TEST);
   while (!glfwWindowShouldClose(window)) {
     glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
@@ -74,15 +78,22 @@ int main(void) {
 
     Shader *s = cube->getShader();
     s->use();
-    s->setVec3("lightColor", lightc);
-    s->setVec3("ourColor", glm::vec3(1.0f, 0.5f, 0.31f));
+    s->setVec3("lightColor", lightColor);
+    s->setVec3("ourColor", glm::vec3(0.24725, 0.1995, 0.0745));
     s->setVec3("lightPos", lightPos);
     s->setVec3("viewPos", glm::vec3(0.0, 0.0, 5.0));
+
+    /*mat taken from*/
+    /*http://devernay.free.fr/cours/opengl/materials.html*/
+    s->setVec3("material.ambient", glm::vec3(0.24725, 0.1995, 0.0745));
+    s->setVec3("material.diffuse", glm::vec3(0.75164, 0.60648, 0.22648));
+    s->setVec3("material.specular", glm::vec3(0.628281, 0.555802, 0.366065));
+    s->setFloat("material.shininess", 0.4 * 128);
     cube->draw(cam);
 
     s = light->getShader();
     s->use();
-    s->setVec3("ourColor", lightc);
+    s->setVec3("ourColor", lightColor);
     light->draw(cam);
 
     glfwSwapBuffers(window);