Add BootImage to second DisplayBuffer during boot

include/PSX/GPU/gpu_types.hpp

@@ -92,11 +92,26 @@ namespace JabyEngine {
             }
         };
 
+        template<typename T>
+        struct Area {
+            Position<T> position;
+            Size<T>     size;
+
+            constexpr Area() = default;
+            constexpr Area(Position<T> position, Size<T> size) : position(position), size(size) {
+            }
+            constexpr Area(T position_x, T position_y, T size_width, T size_height) : position{position_x, position_y}, size{size_width, size_height} {
+            }
+        };
+
         typedef Position<int16_t>  PositionI16;
         typedef Position<uint16_t> PositionU16;
 
         typedef Size<int16_t>  SizeI16;
         typedef Size<uint16_t> SizeU16;
+
+        typedef Area<int16_t>  AreaI16;
+        typedef Area<uint16_t> AreaU16;
     }
 }
 #endif //!__JABYENGINE_GPU_TYPES_HPP__

include/PSX/System/IOPorts/gpu_io.hpp

@@ -106,6 +106,10 @@ namespace JabyEngine {
                 return {(0x02 << 24) | color.raw()};
             }
 
+            static constexpr GP0_t VRAM2VRAM_Blitting() {
+                return {(0b100u << 29)};
+            }
+
             static constexpr GP0_t CPU2VRAM_Blitting() {
                 return {(0b101u << 29)};
             }