Ligthing working

headers/shader.hpp

@@ -11,6 +11,7 @@ public:
   void use();
   void setInt(const std::string &name, int value);
   void setFloat(const std::string &name, float value);
+  void setVec3(const std::string &name, glm::vec3 value);
   void setMat4(const std::string &name, glm::mat4 value);
 
 private:

headers/shapes.h

@@ -75,6 +75,50 @@ float cube_vertices[] = {
     -0.5f, 0.5f,  -0.5f, 0.0f, 1.0f  /**/
 };
 
+float uvcube[] = {
+  -0.5f, -0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+  0.5f, -0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+  0.5f,  0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+  0.5f,  0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+  -0.5f,  0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+  -0.5f, -0.5f, -0.5f,  0.0f,  0.0f, -1.0f,
+
+  -0.5f, -0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+  0.5f, -0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+  0.5f,  0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+  0.5f,  0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+  -0.5f,  0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+  -0.5f, -0.5f,  0.5f,  0.0f,  0.0f, 1.0f,
+
+  -0.5f,  0.5f,  0.5f, -1.0f,  0.0f,  0.0f,
+  -0.5f,  0.5f, -0.5f, -1.0f,  0.0f,  0.0f,
+  -0.5f, -0.5f, -0.5f, -1.0f,  0.0f,  0.0f,
+  -0.5f, -0.5f, -0.5f, -1.0f,  0.0f,  0.0f,
+  -0.5f, -0.5f,  0.5f, -1.0f,  0.0f,  0.0f,
+  -0.5f,  0.5f,  0.5f, -1.0f,  0.0f,  0.0f,
+
+  0.5f,  0.5f,  0.5f,  1.0f,  0.0f,  0.0f,
+  0.5f,  0.5f, -0.5f,  1.0f,  0.0f,  0.0f,
+  0.5f, -0.5f, -0.5f,  1.0f,  0.0f,  0.0f,
+  0.5f, -0.5f, -0.5f,  1.0f,  0.0f,  0.0f,
+  0.5f, -0.5f,  0.5f,  1.0f,  0.0f,  0.0f,
+  0.5f,  0.5f,  0.5f,  1.0f,  0.0f,  0.0f,
+
+  -0.5f, -0.5f, -0.5f,  0.0f, -1.0f,  0.0f,
+  0.5f, -0.5f, -0.5f,  0.0f, -1.0f,  0.0f,
+  0.5f, -0.5f,  0.5f,  0.0f, -1.0f,  0.0f,
+  0.5f, -0.5f,  0.5f,  0.0f, -1.0f,  0.0f,
+  -0.5f, -0.5f,  0.5f,  0.0f, -1.0f,  0.0f,
+  -0.5f, -0.5f, -0.5f,  0.0f, -1.0f,  0.0f,
+
+  -0.5f,  0.5f, -0.5f,  0.0f,  1.0f,  0.0f,
+  0.5f,  0.5f, -0.5f,  0.0f,  1.0f,  0.0f,
+  0.5f,  0.5f,  0.5f,  0.0f,  1.0f,  0.0f,
+  0.5f,  0.5f,  0.5f,  0.0f,  1.0f,  0.0f,
+  -0.5f,  0.5f,  0.5f,  0.0f,  1.0f,  0.0f,
+  -0.5f,  0.5f, -0.5f,  0.0f,  1.0f,  0.0f
+};
+
 const char *basicVertexShaderSource =
     "#version 330 core\n"
     "layout (location = 0) in vec3 aPos;\n"

shaders/lighting/Frag.glsl

@@ -0,0 +1,37 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec3 FragPos;
+in vec3 Normal;
+
+uniform vec3 ourColor;
+uniform vec3 lightColor;
+uniform vec3 lightPos;
+uniform vec3 viewPos;
+
+void main()
+{
+  float ambientStrength = 0.15;
+  float specularStrength = 0.5;
+
+  //msc
+  vec3 norm = normalize(Normal);
+  vec3 lightDir = normalize(lightPos - FragPos);
+
+  // ambient
+  vec3 ambient = ambientStrength * lightColor;
+
+  // diffuse
+  float diff = max(dot(norm, lightDir), 0.0);
+  vec3 diffuse = diff * lightColor;
+
+  // 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;
+
+  // out
+  vec3 result = (ambient + diffuse+specular) * ourColor;
+  FragColor = vec4(result, 1.0);
+}

shaders/lighting/LightFrag.glsl

@@ -0,0 +1,9 @@
+#version 330 core
+out vec4 FragColor;
+
+uniform vec3 ourColor;
+
+void main()
+{
+  FragColor = vec4(ourColor, 1.0);
+}

shaders/lighting/Vert.glsl

@@ -0,0 +1,18 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+
+out vec3 FragPos;
+out vec3 Normal;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+void main()
+{
+  gl_Position = projection * view * model * vec4(aPos, 1.0);
+  FragPos = vec3(model * vec4(aPos, 1.0));
+  Normal = aNormal;
+  //Normal = mat3(transpose(inverse(model))) * aNormal;//if non unifrom scale
+}

src/main.cpp

@@ -2,7 +2,6 @@
 #include <glad/glad.h> /*Must be before GLFW*/
 #include <GLFW/glfw3.h>
 #include <cassert>
-#include <glm/ext/matrix_transform.hpp>
 #include <glm/glm.hpp>
 #include <mesh.hpp>
 #include <shader.hpp>
@@ -14,13 +13,6 @@
 void processInput(GLFWwindow *window);
 void framebuffer_size_callback(GLFWwindow *window, int width, int height);
 
-glm::vec3 cubePositions[] = {
-    glm::vec3(0.0f, 0.0f, 0.0f),    glm::vec3(2.0f, 5.0f, -15.0f),
-    glm::vec3(-1.5f, -2.2f, -2.5f), glm::vec3(-3.8f, -2.0f, -12.3f),
-    glm::vec3(2.4f, -0.4f, -3.5f),  glm::vec3(-1.7f, 3.0f, -7.5f),
-    glm::vec3(1.3f, -2.0f, -2.5f),  glm::vec3(1.5f, 2.0f, -2.5f),
-    glm::vec3(1.5f, 0.2f, -1.5f),   glm::vec3(-1.3f, 1.0f, -1.5f)};
-
 int main(void) {
   glfwInit();
   glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
@@ -44,58 +36,57 @@ int main(void) {
 
   glGenBuffers(1, &VBO);
   glBindBuffer(GL_ARRAY_BUFFER, VBO);
-  glBufferData(GL_ARRAY_BUFFER, sizeof(cube_vertices), cube_vertices,
+  glBufferData(GL_ARRAY_BUFFER, sizeof(uvcube), uvcube, GL_STATIC_DRAW);
-               GL_STATIC_DRAW);
 
-  glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void *)0);
+  glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void *)0);
-  glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float),
+  glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float),
                         (void *)(3 * sizeof(float)));
+  glEnableVertexAttribArray(0);
+  glEnableVertexAttribArray(1);
 
-  glEnableVertexAttribArray(0); /*pos*/
+  Shader *cubeShader = new Shader("./shaders/lighting/Vert.glsl",
-  glEnableVertexAttribArray(1); /*tex_cord*/
+                                  "./shaders/lighting/Frag.glsl");
+  Mesh *cube = new Mesh(cubeShader, VAO, 36);
 
-  Shader *shaderProgram = new Shader("./shaders/MVPTexNoRGBVert.glsl",
+  Shader *lightShader = new Shader("./shaders/lighting/Vert.glsl",
-                                     "./shaders/TexNoRGBFrag.glsl");
+                                   "./shaders/lighting/LightFrag.glsl");
-
+  Mesh *light = new Mesh(lightShader, VAO, 36);
-  Mesh *mesh = new Mesh(shaderProgram, VAO, 36);
+  glm::vec3 lightPos = glm::vec3(1, 2.0f, 1);
-  mesh->setOwned(true);
+  light->setPosition(lightPos);
-
+  light->setScale(glm::vec3(.3));
-  Texture *texture = new Texture(GL_TEXTURE_2D, "./texture/container.jpg");
-  Texture *texture2 = new Texture(GL_TEXTURE_2D, "./texture/brick.jpg");
 
   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);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
-    texture->bind(GL_TEXTURE0);
+    Shader *s = cube->getShader();
-    texture2->bind(GL_TEXTURE1);
+    s->use();
-    glActiveTexture(GL_TEXTURE0);
+    s->setVec3("lightColor", lightc);
-    for (unsigned int i = 0; i < 10; i++) {
+    s->setVec3("ourColor", glm::vec3(1.0f, 0.5f, 0.31f));
-      mesh->setPosition(cubePositions[i]);
+    s->setVec3("lightPos", lightPos);
-      mesh->getShader()->setInt("tex0", i % 2);
+    s->setVec3("viewPos", glm::vec3(0.0, 0.0, 5.0));
+    cube->draw(cam);
 
-      glm::mat4 rotate = glm::mat4(1);
+    s = light->getShader();
-      float angle = 20.0f * i;
+    s->use();
-      rotate =
+    s->setVec3("ourColor", lightc);
-          glm::rotate(rotate, glm::radians(angle), glm::vec3(1.0f, 0.3f, 0.5f));
+    light->draw(cam);
-      rotate = glm::rotate(rotate, (float)glfwGetTime() * glm::radians(55.0f),
-                           glm::vec3(1.0f, 0.5f, 0.0f));
-      mesh->setRotation(glm::quat_cast(rotate));
-      mesh->draw(cam);
-    }
 
     glfwSwapBuffers(window);
     glfwPollEvents();
     processInput(window);
   }
 
-  delete (shaderProgram);
   glfwTerminate();
   return 0;
 }

src/shader.cpp

@@ -45,6 +45,11 @@ void Shader::setFloat(const std::string &name, float value) {
   glUniform1f(glGetUniformLocation(ID, name.c_str()), value);
 }
 
+void Shader::setVec3(const std::string &name, glm::vec3 value) {
+  glUniform3fv(glGetUniformLocation(ID, name.c_str()), 1,
+               glm::value_ptr(value));
+}
+
 void Shader::setMat4(const std::string &name, glm::mat4 value) {
   glUniformMatrix4fv(glGetUniformLocation(ID, name.c_str()), 1, GL_FALSE,
                      glm::value_ptr(value));