Added texture managment and overridable init/cleanup functions.

public/raid/raid.hpp

@@ -40,15 +40,35 @@ private:
     SDL_GLContext mGLContext = nullptr;
 
     mijin::StackedFileSystemAdapter mFS;
+    std::unordered_map<fs::path, ImTextureID> mTextures;
 
     bool mRunning = true;
     ImGuiWindowFlags mMainWindowFlags = DEFAULT_MAIN_WINDOW_FLAGS;
 
-    using glClear_fn_t = void (*)(std::uint32_t);
-    using glClearColor_fn_t = void (*)(float, float, float, float);
+    using GLbitfield = std::uint32_t;
+    using GLint = std::int32_t;
+    using GLuint = std::uint32_t;
+    using GLsizei = std::int32_t;
+    using GLenum = std::uint32_t;
+    using GLfloat = float;
+
+    using glClear_fn_t = void (*)(GLbitfield);
+    using glClearColor_fn_t = void (*)(GLfloat, GLfloat, GLfloat, GLfloat);
+    using glGenTextures_fn_t = void (*)(GLsizei, GLuint*);
+    using glBindTexture_fn_t = void (*)(GLenum, GLuint);
+    using glTexParameteri_fn_t = void (*)(GLenum, GLenum, GLint);
+    using glPixelStorei_fn_t = void (*)(GLenum, GLint);
+    using glTexImage2D_fn_t = void (*)(GLenum, GLint, GLint, GLsizei, GLsizei, GLint, GLenum, GLenum, const void*);
+    using glDeleteTextures_fn_t = void (*)(GLsizei, const GLuint*);
 
     glClear_fn_t glClear;
     glClearColor_fn_t glClearColor;
+    glGenTextures_fn_t glGenTextures;
+    glBindTexture_fn_t glBindTexture;
+    glTexParameteri_fn_t glTexParameteri;
+    glPixelStorei_fn_t glPixelStorei;
+    glTexImage2D_fn_t glTexImage2D;
+    glDeleteTextures_fn_t glDeleteTextures;
 public:
     virtual ~Application() = default;
 
@@ -64,6 +84,9 @@ public:
     [[nodiscard]]
     bool loadFont(const fs::path& path);
 
+    [[nodiscard]]
+    ImTextureID getOrLoadTexture(fs::path path);
+
 protected:
     virtual void render() = 0;
     virtual std::string getFolderName() = 0;
@@ -123,11 +146,12 @@ protected:
         std::string text = fmt::format(format, std::forward<TArg>(arg), std::forward<TArgs>(args)...);
         msgError(text);
     }
+    virtual bool init();
+    virtual void cleanup();
 private:
     bool initSDL();
     bool initGL();
     bool initImGui();
-    void cleanup();
     void handleSDLEvents();
     void loadImGuiConfig();
     void saveImGuiConfig();
@@ -152,7 +176,7 @@ private:
     std::string mFolderName;
     std::string mWindowTitle;
 public:
-    void init(QuickAppOptions options);
+    void preInit(QuickAppOptions options);
     void render() override;
     std::string getFolderName() override;
     std::string getWindowTitle() override;