move parts to new common component to avoid circular dependency of zonecommon and objcommon

src/Common/Image/TextureConverter.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <functional>
+
+#include "Texture.h"
+
+class TextureConverter
+{
+    Texture* m_input_texture;
+    Texture* m_output_texture;
+    const ImageFormat* m_input_format;
+    const ImageFormat* m_output_format;
+
+    std::function<uint64_t(const void* offset, unsigned bitCount)> m_read_pixel_func;
+    std::function<void(void* offset, uint64_t pixel, unsigned bitCount)> m_write_pixel_func;
+
+    static constexpr uint64_t Mask1(unsigned length);
+    void SetPixelFunctions(unsigned inBitCount, unsigned outBitCount);
+
+    void CreateOutputTexture();
+
+    void ReorderUnsignedToUnsigned() const;
+    void ConvertUnsignedToUnsigned();
+
+public:
+
+    TextureConverter(Texture* inputTexture, const ImageFormat* targetFormat);
+
+    Texture* Convert();
+};