LearnOpenGL（九）之材质

#include "myopenglwidget.h" #define timeOutmSec 50 float vertices[] = { -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 }; unsigned int VAO,VBO,lightVAO; QVector3D lightPos(1.2f, 1.0f, 2.0f); QVector3D lightColor(1.0f, 1.0f, 1.0f); QVector3D objectColor(1.0f, 0.5f, 0.31f); QVector3D viewInitPos(0.0,0.0,5.0); MyOpenglWidget::MyOpenglWidget(QWidget *parent) : QOpenGLWidget{parent} { connect(&m_timer,&QTimer::timeout,this,&MyOpenglWidget::on_timeOut); m_timer.start(timeOutmSec); m_time.start(); m_camera.Position = viewInitPos; setFocusPolicy(Qt::StrongFocus); } MyOpenglWidget::~MyOpenglWidget() { makeCurrent(); glDeleteBuffers(1,&VBO); glDeleteVertexArrays(1,&VAO); glDeleteVertexArrays(1,&lightVAO); doneCurrent(); } void MyOpenglWidget::initializeGL() { initializeOpenGLFunctions(); //创建VBO和VAO对象，并赋予ID glGenVertexArrays(1, &VAO); glGenBuffers(1, &VBO); //绑定VBO和VAO对象 glBindVertexArray(VAO); glBindBuffer(GL_ARRAY_BUFFER, VBO); //为当前绑定到target的缓冲区对象创建一个新的数据存储。 //如果data不是NULL，则使用来自此指针的数据初始化数据存储 glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); //告知显卡如何解析缓冲里的属性值 glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0); //开启VAO管理的第一个属性值 glEnableVertexAttribArray(0); glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)(3*sizeof(float))); //开启VAO管理的第一个属性值 glEnableVertexAttribArray(1); glGenVertexArrays(1, &lightVAO); glBindVertexArray(lightVAO); // we only need to bind to the VBO, the container's VBO's data already contains the data. glBindBuffer(GL_ARRAY_BUFFER, VBO); // set the vertex attribute glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0); glEnableVertexAttribArray(0); bool success; m_shaderProgram.addShaderFromSourceFile(QOpenGLShader::Vertex,":/shaders/shaders/shapes.vert"); m_shaderProgram.addShaderFromSourceFile(QOpenGLShader::Fragment,":/shaders/shaders/shapes.frag"); success=m_shaderProgram.link(); if(!success) qDebug()<<"ERR:"<<m_shaderProgram.log(); m_lightShaderProgram.addShaderFromSourceFile(QOpenGLShader::Vertex,":/shaders/shaders/light.vert"); m_lightShaderProgram.addShaderFromSourceFile(QOpenGLShader::Fragment,":/shaders/shaders/light.frag"); success=m_lightShaderProgram.link(); if(!success) qDebug()<<"ERR:"<<m_lightShaderProgram.log(); } void MyOpenglWidget::resizeGL(int w, int h) { Q_UNUSED(w); Q_UNUSED(h); } void MyOpenglWidget::paintGL() { QMatrix4x4 model; QMatrix4x4 view; QMatrix4x4 projection; float time=m_time.elapsed()/50.0; projection.perspective(m_camera.Zoom,(float)width()/height(),0.1,100); view=m_camera.GetViewMatrix(); glClearColor(0.2f, 0.3f, 0.3f, 1.0f); glEnable(GL_DEPTH_TEST); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); m_shaderProgram.bind(); m_shaderProgram.setUniformValue("lightPos",lightPos); m_shaderProgram.setUniformValue("viewPos",m_camera.Position); m_shaderProgram.setUniformValue("projection", projection); m_shaderProgram.setUniformValue("view", view); model.rotate(time, 1.0f, 5.0f, 0.5f); m_shaderProgram.setUniformValue("model", model); m_shaderProgram.setUniformValue("material.ambient", 1.0f, 0.5f, 0.31f); m_shaderProgram.setUniformValue("material.diffuse", 1.0f, 0.5f, 0.31f); m_shaderProgram.setUniformValue("material.specular", 0.5f, 0.5f, 0.5f); m_shaderProgram.setUniformValue("material.shininess", 32.0f); /* lightColor.setX(sin(time/100 * 2.0f)); lightColor.setY(sin(time/100 * 0.7f)); lightColor.setZ(sin(time/100 * 1.3f)); */ QVector3D diffuseColor = lightColor *QVector3D(0.5,0.5,0.5); QVector3D ambientColor = diffuseColor *QVector3D(0.2,0.2,0.2); m_shaderProgram.setUniformValue("light.ambient", ambientColor); m_shaderProgram.setUniformValue("light.diffuse", diffuseColor); m_shaderProgram.setUniformValue("light.specular", lightColor); glBindVertexArray(VAO); glDrawArrays(GL_TRIANGLES,0,36); m_lightShaderProgram.bind(); m_lightShaderProgram.setUniformValue("projection", projection); m_lightShaderProgram.setUniformValue("view", view); model.setToIdentity(); model.translate(lightPos); model.rotate(1.0f, 1.0f, 5.0f, 0.5f); model.scale(0.2); m_lightShaderProgram.setUniformValue("model", model); m_lightShaderProgram.setUniformValue("lightColor",lightColor); glBindVertexArray(lightVAO); glDrawArrays(GL_TRIANGLES,0,36); } void MyOpenglWidget::on_timeOut() { update(); } void MyOpenglWidget::mouseMoveEvent(QMouseEvent *event) { if(event->buttons() & Qt::RightButton){ static QPoint lastPos(width()/2,height()/2); auto currentPos=event->pos(); QPoint deltaPos=currentPos-lastPos; lastPos=currentPos; m_camera.ProcessMouseMovement(deltaPos.x(),-deltaPos.y()); } } void MyOpenglWidget::wheelEvent(QWheelEvent *event) { m_camera.ProcessMouseScroll(event->angleDelta().y()/120); } void MyOpenglWidget::keyPressEvent(QKeyEvent *event) { float deltaTime=timeOutmSec/1000.0; switch(event->key()) { case Qt::Key_W: m_camera.ProcessKeyboard(FORWARD,deltaTime);break; case Qt::Key_S: m_camera.ProcessKeyboard(BACKWARD,deltaTime);break; case Qt::Key_D: m_camera.ProcessKeyboard(RIGHT,deltaTime);break; case Qt::Key_A: m_camera.ProcessKeyboard(LEFT,deltaTime);break; case Qt::Key_Q: m_camera.ProcessKeyboard(DOWN,deltaTime);break; case Qt::Key_E: m_camera.ProcessKeyboard(UP,deltaTime);break; case Qt::Key_Space: m_camera.Position=viewInitPos;break; } }