[CORE][CHG] Use thumbnail shader

- Fix no texture in thumbnail after main shader changed

FinalProject/modelthumbnailwidget.cpp

@@ -19,21 +19,25 @@ ModelThumbnailWidget::ModelThumbnailWidget(Model* model, QWidget* parent) :
     }
 
     // Copy the shaders to the folder
-    if (QFile::exists("./temp/shaders/vertexshader.vs")) {
+    extractShaderResource("thumbnailvertexshader.glsl");
-        QFile::remove("./temp/shaders/vertexshader.vs");
+    extractShaderResource("thumbnailfragmentshader.glsl");
-    }
-    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);
 }
 
 ModelThumbnailWidget::~ModelThumbnailWidget() {
 }
 
+void ModelThumbnailWidget::extractShaderResource(const QString& shaderName) {
+    QString shaderResourcePath = ":/shaders/" + shaderName;
+    QString shaderTempPath = "./temp/shaders/" + shaderName;
+
+    if (QFile::exists(shaderTempPath))
+    {
+        QFile::remove(shaderTempPath);
+    }
+    QFile::copy(shaderResourcePath, shaderTempPath);
+    QFile::setPermissions(shaderTempPath, QFile::ReadOwner | QFile::WriteOwner);
+}
+
 void ModelThumbnailWidget::initializeGL() {
     initializeOpenGLFunctions();
 
@@ -44,8 +48,8 @@ void ModelThumbnailWidget::initializeGL() {
 
     _shaderProgram.ensureInitialized();
     
-    VertexShader vertexShader("./temp/shaders/vertexshader.vs");
+    VertexShader vertexShader("./temp/shaders/thumbnailvertexshader.glsl");
-    FragmentShader fragmentShader("./temp/shaders/fragmentshader.fs");
+    FragmentShader fragmentShader("./temp/shaders/thumbnailfragmentshader.glsl");
     _shaderProgram.attachShader(vertexShader);
     _shaderProgram.attachShader(fragmentShader);
     vertexShader.dispose();

FinalProject/modelthumbnailwidget.h

@@ -23,6 +23,9 @@ private:
     ShaderProgram _shaderProgram = ShaderProgram::empty();
     Camera _camera;
 
+private:
+    void extractShaderResource(const QString& shaderName);
+    
 protected:
     virtual void initializeGL() override;
     virtual void paintGL() override;