First draft for LookUpColor8

include/PSX/GPU/gpu_types.hpp

@@ -153,6 +153,30 @@ namespace JabyEngine {
             }
         };
 
+        struct LookUpColor8 {
+            static constexpr BitRange LUPosition[] = {
+                BitRange::from_to(0, 7),
+                BitRange::from_to(8, 15)
+            };
+            uint8_t lu_id[2];
+
+            static constexpr LookUpColor8 from_ids(uint8_t px0, uint8_t px1) {
+                return {{px0, px1}};
+            }
+
+            constexpr uint8_t get_lu_id(size_t at) const {
+                return this->lu_id[at];
+            }
+
+            constexpr void set_lu_id(uint8_t new_lu_id, size_t at) {
+                this->lu_id[at] = new_lu_id;
+            }
+
+            uint16_t force_read() const {
+                return *const_cast<const volatile uint16_t*>(reinterpret_cast<const uint16_t*>(this->lu_id));
+            }
+        };
+
         template<typename T>
         struct Position : public internal::XYMovement<Position<T>, T> {
             T x;