+ translate pixel colors on change GraphicMode

src/Color.cpp

@@ -2,9 +2,13 @@
 
 namespace vkvm {
 
+    Color::Color() noexcept
+            : red(0), green(0), blue(0) {}
+
     Color::Color(unsigned char red, unsigned char green, unsigned char blue) noexcept
-            : red(red), green(green), blue(blue) {
-    }
+            : red(red), green(green), blue(blue) {}
+
+    Color::Color(const Color &color) noexcept = default;
 
     Color::Color(unsigned int hex) noexcept {
         red = (unsigned char) ((hex >> 16 & 0xFF));//NOLINT

src/Color.hpp

@@ -16,8 +16,12 @@ namespace vkvm {
         unsigned char blue;
 
     public:
+        Color() noexcept;
+
         Color(unsigned char red, unsigned char green, unsigned char blue) noexcept;
 
+        Color(const Color &color) noexcept;
+
         explicit Color(unsigned int hex) noexcept;
 
         auto getRed() -> unsigned char;

src/SharedMemoryAccess.cpp

@@ -62,9 +62,14 @@ namespace vkvm {
     }
 
     char *getLocalMemory(){
+        static bool givenWarning {false};
+        if(!givenWarning && impl.localMemoryWarn){
+            givenWarning = true;
+            log(LogLevel::WARNING, "no shared memory found, using local memory instead!");
+        }
         if (localSharedMemory.empty()) {
             constexpr int kilo = 1024;
-            localSharedMemory.resize(impl.sharedMemorySize);
+            localSharedMemory.resize(impl.sharedMemorySize * kilo);
         }
         return &localSharedMemory[0];
     }

src/internal.hpp

@@ -58,6 +58,7 @@ constexpr int keyboardBufferSize = 16;
         int interruptEntrysPerEventType = 8; //NOLINT
         int reservedSize = 1024; //NOLINT
         std::vector<std::function<void()>> eventTable;
+        bool localMemoryWarn = true;
     };
 
     extern Impl impl;

src/vkvm.cpp

@@ -16,8 +16,10 @@ namespace vkvm {
     }
 
     auto setDefaultValues() -> void {
+        impl.localMemoryWarn = false;
         if(getSharedMemory() != nullptr) {
             //set default values
+            setMode(GraphicMode::RGB);
             setCharactersPerRow(60);// NOLINT
             setCharactersPerColumn(20);// NOLINT
             setHeight(600);// NOLINT
@@ -25,10 +27,10 @@ namespace vkvm {
             setMousePosition(42, 42);// NOLINT
             setBackgroundColor(black);
             setForegroundColor(white);
-            setMode(GraphicMode::RGB);
             setRedrawInterval(20);// NOLINT
             setTimerInterruptInterval(10);// NOLINT
         }
+        impl.localMemoryWarn = true;
     }
 
     auto registerEvent(EventType type, const std::function<void()> &handler) -> bool {
@@ -205,7 +207,32 @@ namespace vkvm {
 
     auto setMode(GraphicMode newValue) -> void {
         lockSharedMemory();
-        getRegisters()->graphicMode = newValue;
+        auto reg = getRegisters();
+        if(reg->graphicMode != newValue){
+
+            std::vector<Color> pixels;
+            int height = reg->height_pixels;
+            int width = reg->width_pixels;
+            pixels.resize(height * width);
+
+            for(int y = 0; y < height;y++){
+                for(int x = 0;x < width;x++){
+                    pixels[y * width + x] = getPixel(x,y);
+                }
+            }
+
+            getRegisters()->graphicMode = newValue;
+
+            unlockSharedMemory();
+            for(int y = 0; y < height;y++){
+                for(int x = 0;x < width;x++){
+                    setPixel(x,y, pixels[y * width + x]);
+                }
+            }
+            lockSharedMemory();
+        }else{
+            reg->graphicMode = newValue;
+        }
         unlockSharedMemory();
     }