lighting without abstraction

FinalProject/fragmentshader.fs

@@ -10,6 +10,7 @@ uniform sampler2D texture_specular1;
 // above 2 uniform can caculate objectColor
 
 uniform vec3 lightPos; 
+uniform vec3 viewPos; 
 uniform vec3 lightColor;
 
 void main()
@@ -17,7 +18,7 @@ void main()
     vec3 objectColor = texture(texture_specular1, TexCoords).rgb;
     objectColor = texture(texture_diffuse1, TexCoords).rgb;
     // ambient
-    float ambientStrength = 0;
+    float ambientStrength = 0.3;
     vec3 ambient = ambientStrength * lightColor;
 
     // diffuse 
@@ -26,6 +27,13 @@ void main()
     float diff = max(dot(norm, lightDir), 0.0);
     vec3 diffuse = diff * lightColor;
 
-    vec3 result = (ambient + diffuse) * objectColor;
+    // specular
+    float specularStrength = 0.5;
+    vec3 viewDir = normalize(viewPos - FragPos);
+    vec3 reflectDir = reflect(-lightDir, norm);  
+    float spec = pow(max(dot(viewDir, reflectDir), 0.0), 32);
+    vec3 specular = specularStrength * spec * lightColor;  
+        
+    vec3 result = (ambient + diffuse + specular) * objectColor;
     FragColor = vec4(result, 1.0);
 }

FinalProject/lightCaster.h

@@ -4,6 +4,7 @@
 // 发光物不需要纹理，所以说需要另外的shader
 // 在sceneviewer中被包含
 class Illuminant {
+
 public:
     Illuminant() {};
 

FinalProject/sceneviewer.cpp

@@ -14,6 +14,14 @@
 
 using std::vector;
 
+void copyFile(std::string name) {
+    if (QFile::exists(("./temp/shaders/" + name).c_str())) {
+        QFile::remove(("./temp/shaders/" + name).c_str());
+    }
+    QFile::copy((":/shaders/" + name).c_str(), ("./temp/shaders/" + name).c_str());
+    QFile::setPermissions(("./temp/shaders/" + name).c_str(), QFileDevice::ReadOwner | QFileDevice::WriteOwner);
+}
+
 SceneViewer::SceneViewer(QWidget* parent)
 	: QOpenGLWidget(parent)
 {
@@ -29,16 +37,24 @@ SceneViewer::SceneViewer(QWidget* parent)
     }
     
     // Copy the shaders to the folder
-    if (QFile::exists("./temp/shaders/vertexshader.vs")) {
-        QFile::remove("./temp/shaders/vertexshader.vs");
-    }
-    QFile::copy(":/shaders/vertexshader.vs", "./temp/shaders/vertexshader.vs");
-    QFile::setPermissions("./temp/shaders/vertexshader.vs", QFileDevice::ReadOwner | QFileDevice::WriteOwner);
-    if (QFile::exists("./temp/shaders/fragmentshader.fs")) {
-        QFile::remove("./temp/shaders/fragmentshader.fs");
-    }
-    QFile::copy(":/shaders/fragmentshader.fs", "./temp/shaders/fragmentshader.fs");
-    QFile::setPermissions("./temp/shaders/fragmentshader.fs", QFile::ReadOwner | QFile::WriteOwner);
+    //if (QFile::exists("./temp/shaders/vertexshader.vs")) {
+    //    QFile::remove("./temp/shaders/vertexshader.vs");
+    //}
+    //QFile::copy(":/shaders/vertexshader.vs", "./temp/shaders/vertexshader.vs");
+    //QFile::setPermissions("./temp/shaders/vertexshader.vs", QFileDevice::ReadOwner | QFileDevice::WriteOwner);
+    //
+    //if (QFile::exists("./temp/shaders/fragmentshader.fs")) {
+    //    QFile::remove("./temp/shaders/fragmentshader.fs");
+    //}
+    //QFile::copy(":/shaders/fragmentshader.fs", "./temp/shaders/fragmentshader.fs");
+    //QFile::setPermissions("./temp/shaders/fragmentshader.fs", QFile::ReadOwner | QFile::WriteOwner);
+
+    copyFile("vertexshader.vs");
+    copyFile("fragmentshader.fs");
+    //copyFile("illuminant.vs");
+    //copyFile("illuminant.fs");
+
+
 }
 
 SceneViewer::~SceneViewer() {
@@ -52,7 +68,7 @@ void SceneViewer::initializeGL() {
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
     glEnable(GL_DEPTH_TEST);
-
+    glEnable(GL_FRAMEBUFFER_SRGB);
     Logger::info("Currently running on OpenGL version: " + std::string((const char*)glGetString(GL_VERSION)));
 
     _shaderProgram.ensureInitialized();
@@ -65,7 +81,7 @@ void SceneViewer::initializeGL() {
     vertexShader.dispose();
     fragmentShader.dispose();
 
-    Model* backpackModel = new Model("D:\\code\\ComputerGraphic\\nanosuit\\nanosuit.obj");
+    Model* backpackModel = new Model("D:\\code\\ComputerGraphic\\backpack\\backpack.obj");
     Logger::info("Model loaded");
     Renderable backpack(backpackModel);
     _objects.push_back(backpack);
@@ -175,9 +191,35 @@ void SceneViewer::wheelEvent(QWheelEvent* event) {
     update();
 }
 
+double rr = 1.0;
 void SceneViewer::update_light() {
-    auto r = time(NULL);
-    Logger::debug("1\n");
+    // 对于发光体，
+    //model is in Illuminate
+    // view is from camera
+    // projection is from caller
+    
+    rr += time(NULL) / 1000000000.0;
+    rr = (long long)rr % 10000;
+    double r = rr / 100;
+
     _shaderProgram.setUniform("lightPos", (float)sin(r), (float)sin(r/4), (float)sin(r/2.1));
-    _shaderProgram.setUniform("lightColor", 1.0f, 1.0f, 1.0f);
+    _shaderProgram.setUniform("lightColor", 0.8+0.2*(float)sin(r), 0.8 + 0.2 * (float)sin(r / 3), 0.8 + 0.2 * (float)sin(r / 2.1));
+
+    _shaderProgram.setUniform("viewPos", _camera.position());
+    // 要给着色器传递viewPos
+    
+    
+    //// 下面换成渲染发光体的shaderprogram
+    //ShaderProgram illuminantShader = ShaderProgram::empty();
+
+
+    //illuminantShader.ensureInitialized();
+    //Logger::info("Shader Program initialized");
+
+    //VertexShader vertexShader("./temp/shaders/illuminant.vs");
+    //FragmentShader fragmentShader("./temp/shaders/illuminant.fs");
+    //_shaderProgram.attachShader(vertexShader);
+    //_shaderProgram.attachShader(fragmentShader);
+    //vertexShader.dispose();
+    //fragmentShader.dispose();
 }

FinalProject/sceneviewer.h

@@ -23,7 +23,7 @@ private:
     // List of objects currently in the scene
     std::vector<Renderable> _objects;
     // List of light casters in the scene
-    std::vector<LightCaster> _casters;
+    std::vector<Illuminant> _illuminants;
     // Shader program for objects
     ShaderProgram _shaderProgram = ShaderProgram::empty();
     // Main camera