update

CMakeLists.txt

@@ -4,6 +4,9 @@ project(3dviewer)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 include_directories(.)
 
+find_package(glfw3 REQUIRED)
+find_package(OpenGL REQUIRED)
+
 add_executable(
     ${PROJECT_NAME}
     main.cpp
@@ -15,5 +18,14 @@ add_executable(
 target_link_libraries(
     ${PROJECT_NAME}
     PRIVATE
-    libglfw3.a
+    glfw3
+    OpenGL::GL
+    X11
+    Xrandr
+    Xi
+    Xcursor
+    Xinerama
+    pthread
+    dl
+    m
 )

camera.h

@@ -82,6 +82,8 @@ public:
 
     void triggleFirstMouse() { firstMouse_ = !firstMouse_; }
 
+    float Zoom() const { return zoom_; }
+
 private:
     void updateCameraVectors() {
         glm::vec3 front;

lopenglprogram.cpp

@@ -120,21 +120,35 @@ bool LOpenGLShader::compileShaderFromFile(const std::string &path) {
   return true;
 }
 
-LOpenGLProgram::LOpenGLProgram() : linked_(false) {
+LOpenGLProgram::LOpenGLProgram() { Create(); }
-  Create();
-}
 
 LOpenGLProgram::~LOpenGLProgram() {
+  if (programId_ != 0) {
     glDeleteProgram(programId_);
   }
+}
 
-void LOpenGLProgram::Create() { programId_ = glCreateProgram(); }
+void LOpenGLProgram::Create() {
+  programId_ = glCreateProgram();
+  created_ = (programId_ != 0);
+  linked_ = false;
+}
 
-bool LOpenGLProgram::Link() const {
+bool LOpenGLProgram::Link() {
   if (!created_ || linked_ || shaderList_.empty()) {
     return false;
   }
   glLinkProgram(programId_);
+  GLint success = 0;
+  glGetProgramiv(programId_, GL_LINK_STATUS, &success);
+  if (!success) {
+    char infoLog[512];
+    glGetProgramInfoLog(programId_, 512, nullptr, infoLog);
+    std::cout << "ERROR::PROGRAM::LINK_FAILED\n" << infoLog << std::endl;
+    linked_ = false;
+    return false;
+  }
+  linked_ = true;
   return true;
 }
 
@@ -165,7 +179,7 @@ void LOpenGLProgram::setUniformValue(const std::string &name, float x, float y,
 }
 
 void LOpenGLProgram::setUniformValue(const std::string &name, glm::mat4 value) const {
-  glUniform4fv(glGetUniformLocation(programId_, name.c_str()), 1, &value[0][0]);
+  glUniformMatrix4fv(glGetUniformLocation(programId_, name.c_str()), 1, GL_FALSE, &value[0][0]);
 }
 
 bool LOpenGLProgram::addShader(std::unique_ptr<LOpenGLShader> shader) {

lopenglprogram.h

@@ -41,7 +41,7 @@ public:
   bool addShader(std::unique_ptr<LOpenGLShader> shader);
   void removeShader(GLuint id);
   void Create();
-  bool Link() const;
+  bool Link();
   void Use() const;
   bool Linked() const { return linked_; }
 
@@ -55,7 +55,7 @@ public:
 
 private:
   std::list<std::unique_ptr<LOpenGLShader>> shaderList_;
-  GLuint programId_;
+  GLuint programId_ = 0;
-  bool linked_;
+  bool linked_ = false;
-  bool created_;
+  bool created_ = false;
 };

main.cpp

@@ -4,7 +4,10 @@
 #include <GL/glext.h>
 #include <GLFW/glfw3.h>
 #include <functional>
+#include <glm/ext/matrix_clip_space.hpp>
+#include <glm/ext/matrix_transform.hpp>
 #include <glm/fwd.hpp>
+#include <glm/trigonometric.hpp>
 #include <iostream>
 #include <memory>
 #include <utility>
@@ -17,19 +20,28 @@ public:
         int width;
         int height;
     };
-    GLWidget(ViewPort port) : viewport_(port),
+    GLWidget(ViewPort port) : viewport_(port)
-        window_(nullptr, [](GLFWwindow* w){if(w) glfwDestroyWindow(w);}) {
+    , window_(nullptr, [](GLFWwindow* w){if(w) glfwDestroyWindow(w);})
+    , deinit_(false) {
         lastX_ = port.width / 2;
         lastY_ = port.height / 2;
         initGeometry();
     }
     ~GLWidget() {
+        if (!deinit_) {
+            // OpenGL objects should be deleted while a valid context still exists.
+            if (window_) {
+                glfwMakeContextCurrent(window_.get());
+            }
             if (bgVao_) {
                 glDeleteVertexArrays(1, &bgVao_);
             }
             if (bgVbo_) {
                 glDeleteBuffers(1, &bgVbo_);
             }
+            deinit_ = true;
+        }
+        
     }
 
     void setViewPort(int width, int height) {
@@ -37,7 +49,10 @@ public:
     }
 
     bool initGeometry() {
-        glfwInit();
+        if (!glfwInit()) {
+            std::cout << "Failed to initialize GLFW" << std::endl;
+            return false;
+        }
         glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
         glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
         glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
@@ -48,18 +63,20 @@ public:
         if (!window_) {
             std::cout << "Failed to create GLFW window" << std::endl;
             glfwTerminate();
-            return -1;
+            return false;
         }
         glfwMakeContextCurrent(window_.get());
         if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
             std::cout << "Failed to initialize GLAD" << std::endl;
-            return -1;
+            return false;
         }
 
         glViewport(0, 0, 800, 600);
         glfwSetWindowUserPointer(window_.get(), this);
         glfwSetFramebufferSizeCallback(window_.get(), &GLWidget::framebufferSizeCallback);
         glfwSetCursorPosCallback(window_.get(), &GLWidget::mouseCallback);
+        glfwSetScrollCallback(window_.get(), &GLWidget::scrollCallback);
+        return true;
     }
 
     void setBgShaderPath(std::string vp, std::string fp) {
@@ -95,16 +112,100 @@ private:
         
     }
 
+    void initPanelGeometry_() {
+        if (panelVbo_) {
+            glDeleteBuffers(1, &panelVbo_);
+            panelVbo_ = 0;
+        }
+        if (panelVao_) {
+            glDeleteVertexArrays(1, &panelVao_);
+            panelVao_ = 0;
+        }
+
+        const float y = panelHeight_ * 0.5f;
+        const float x = panelWidth_ * 0.5f;
+        const float z = panelDepth_ * 0.5f;
+
+        struct V {
+            float x, y, z;
+            float nx, ny, nz;
+        };
+        const V verts[24] = {
+            // 顶面
+            {-x, y, -z, 0, 1, 0},
+            {x, y, -z, 0, 1, 0},
+            {x, y, z, 0, 1, 0 },
+            {-x, y, z, 0, 1, 0},
+
+            // 前面
+            {-x, y, z, 0, 0, 1},
+            {x, y, z, 0, 0, 1},
+            {x, -y, z, 0, 0, 1},
+            {-x, -y, z, 0, 0, 1},
+
+            // 底面
+            {-x, -y, -z, 0, -1, 0},
+            {x, -y, -z, 0, -1, 0},
+            {x, -y, z, 0, -1, 0},
+            {-x, -y, z, 0, -1, 0},
+
+            // 后面
+            {-x, y, -z, 0, 0, -1},
+            {x, y, -z, 0, 0, -1}, 
+            {x, -y, -z, 0, 0, -1},
+            {-x, -y, -z, 0, 0, -1},
+
+            // 左面
+            {-x, y, z, -1, 0, 0},
+            {-x, y, -z, -1, 0, 0},
+            {-x, -y, -z, -1, 0, 0},
+            {-x, -y, z, -1, 0, 0},
+
+            // 右面
+            {x, y, -z, 1, 0, 0},
+            {x, y, z, 1, 0, 0},
+            {x, -y, z, 1, 0, 0},
+            {x, -y, -z, 1, 0, 0},
+        };
+
+        unsigned int idx[36] = {
+            0, 1, 2, 0, 2, 3,
+            4, 5, 6, 4, 6, 7,
+            8, 9, 10, 8, 10, 11,
+            12, 13, 14, 12, 14, 15,
+            16, 17, 18, 16, 18, 19,
+            20, 21, 22, 20, 22, 23,
+        };
+
+        glGenVertexArrays(1, &panelVao_);
+        
+    }
+
     bool initBgProgram() {
         auto vshader = std::make_unique<LOpenGLShader>(LOpenGLShader::ShaderType::Vertex);
         auto fshader = std::make_unique<LOpenGLShader>(LOpenGLShader::ShaderType::Fragment);
-        vshader->compileShaderFromFile(bgVertShaderPath_);
+        if (!vshader->compileShaderFromFile(bgVertShaderPath_)) {
-        fshader->compileShaderFromFile(bgFragShaderPath_);
+            std::cout << "Vertex shader compile failed: " << bgVertShaderPath_ << "\n"
+                      << vshader->Log() << std::endl;
+            return false;
+        }
+        if (!fshader->compileShaderFromFile(bgFragShaderPath_)) {
+            std::cout << "Fragment shader compile failed: " << bgFragShaderPath_ << "\n"
+                      << fshader->Log() << std::endl;
+            return false;
+        }
         bgProg_ = std::make_unique<LOpenGLProgram>();
-        bgProg_->addShader(std::move(vshader));
+        if (!bgProg_->addShader(std::move(vshader))) {
-        bgProg_->addShader(std::move(fshader));
+            std::cout << "Failed to attach vertex shader\n";
+            return false;
+        }
+        if (!bgProg_->addShader(std::move(fshader))) {
+            std::cout << "Failed to attach fragment shader\n";
+            return false;
+        }
         bool ret = bgProg_->Link();
         if (!ret) {
+            std::cout << "Failed to link background program\n";
             return false;
         }
 
@@ -119,7 +220,7 @@ private:
         bgProg_->Use();
         bgProg_->setUniformValue("uViewport", glm::vec2(viewport_.width, viewport_.height));
         bgProg_->setUniformValue("uMajorStep", 120.0f);
-        bgProg_->setUniformValue("uMinjorStep", 24.0f);
+        bgProg_->setUniformValue("uMinorStep", 24.0f);
         glBindVertexArray(bgVao_);
         glDrawArrays(GL_TRIANGLES, 0, 6);
         glBindVertexArray(0);
@@ -131,11 +232,20 @@ private:
 public:
 
     void eventLoop() {
+        if (!window_) {
+            return;
+        }
         initBgGeometry();
-        initBgProgram();
+        if (!initBgProgram()) {
+            return;
+        }
         while (!glfwWindowShouldClose(window_.get())) {
             processInput(window_.get());
+            glClearColor(0.08f, 0.08f, 0.10f, 1.0f);
+            glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
             drawBg();
+            glfwSwapBuffers(window_.get());
+            glfwPollEvents();
         }
     }
 
@@ -149,6 +259,7 @@ private:
     }
 
     void onFramebufferSize(int width, int height) {
+        viewport_ = {width, height};
         glViewport(0, 0, width, height);
     }
 
@@ -171,6 +282,7 @@ private:
         float ypos = static_cast<float>(y);
 
         if (camera_.firstMouse()) {
+            std::cout << "in firstMouse()\n";
             lastX_ = x;
             lastY_ = y;
             camera_.triggleFirstMouse();
@@ -186,8 +298,10 @@ private:
     }
 
     static void scrollCallback(GLFWwindow* window, double xoffset, double yoffset) {
+        std::cout << "scrollCallback\n";
         auto* self = static_cast<GLWidget*>(glfwGetWindowUserPointer(window));
         if (!self) {
+            std::cout << "auto* self = static_cast<GLWidget*>(glfwGetWindowUserPointer(window)) failed\n";
             return;
         }
         self->onScrollRoll(xoffset, yoffset);
@@ -202,23 +316,35 @@ private:
     std::unique_ptr<GLFWwindow, std::function<void(GLFWwindow*)>> window_;
     std::string bgFragShaderPath_;
     std::string bgVertShaderPath_;
-    unsigned int bgVao_;
+    unsigned int bgVao_ = 0;
-    unsigned int bgVbo_;
+    unsigned int bgVbo_ = 0;
+
+    std::unique_ptr<LOpenGLProgram> panelProg_;
+    std::string panelVertShaderPath_;
+    std::string panelFragShaderPath_;
+    unsigned int panelVao_ = 0;
+    unsigned int panelVbo_ = 0;
+    float panelWidth_ = 0.25;
+    float panelHeight_ = 0.35;
+    float panelDepth_ = 0.05;
+
+
     ViewPort viewport_{800, 600};
     Camera camera_;
 
     bool firstMouse_ = true;
     float lastX_;
     float lastY_;
+
+    bool deinit_;
 };
 
 int main() {
-
+    {
         GLWidget glw({600, 800});
-    glw.setBgShaderPath("bg.vert", "bg.frag");
+        glw.setBgShaderPath("../shader/bg.vert", "../shader/bg.frag");
-
         glw.eventLoop();
-
+    }
     glfwTerminate();
     return 0;
 }

shader/bg.frag

@@ -9,9 +9,9 @@ uniform bool uLightMode;
 
 float gridLine(float stepPx) {
     vec2 coord = gl_FragCoord.xy;
-    vec2 q = coord / stepPx;
+    vec2 q = coord / max(stepPx, 1.0);
-
+    vec2 fw = max(fwidth(q), vec2(1e-6));
-    vec2 q = abs(fract(q - 0.5) - 0.5) / fwidth(stepPx);
+    q = abs(fract(q - 0.5) - 0.5) / fw;
     float line = 1.0 - min(min(q.x, q.y), 1.0);
 
     return line;
@@ -21,27 +21,24 @@ void main() {
     vec2 viewport = max(uViewport, vec2(1.0));
     vec2 uv = gl_FragCoord.xy / viewport;
 
-    vec3 topCol, botCol, majCol, minCol;
+    vec3 topCol, botCol;
-    float majStrength, minStrength;
+    float majorStrength, minorStrength;
-    float vignettePow, vignetteStrength;
 
     topCol = vec3(0.99, 0.99, 1.00);
     botCol = vec3(0.94, 0.95, 0.98);
 
-    minorCol = vec3(0.80, 0.82, 0.87);
+    vec3 minorCol = vec3(0.80, 0.82, 0.87);
-    majorCol = vec3(0.70, 0.73, 0.80);
+    vec3 majorCol = vec3(0.70, 0.73, 0.80);
 
-    minorStrength = 0.22;
+    minorStrength = 0.28;
-    majorStrength = 0.35;
+    majorStrength = 0.45;
-    vignettePow = 0.12;
-    vignetteStrength = 0.35;
 
     vec3 col = mix(botCol, topCol, uv.y);
     float minor = gridLine(max(uMinorStep, 1.0));
     float major = gridLine(max(uMajorStep, 1.0));
 
-    col = mix(col, minorCol, minStrength * minor);
+    col = mix(col, minorCol, minorStrength * minor);
-    col = mix(col, majorCol, majStrength * major);
+    col = mix(col, majorCol, majorStrength * major);
 
     vec2 p = uv * 2.0 - 1.0;
     float v = clamp(1.0 - dot(p, p) * 0.12 , 0.0, 1.0);