From 3651c4c405e5feb57170ecb63e768839f2ec809f Mon Sep 17 00:00:00 2001
From: Jaby <fenir50@web.de>
Date: Thu, 21 Dec 2023 11:43:24 -0500
Subject: [PATCH] First draft for LookUpColor8

---
 include/PSX/GPU/gpu_types.hpp           | 24 ++++++++++++++++++++++++
 src/Library/src/BootLoader/gpu_boot.cpp | 24 ++++++++++++++++++++----
 2 files changed, 44 insertions(+), 4 deletions(-)

diff --git a/include/PSX/GPU/gpu_types.hpp b/include/PSX/GPU/gpu_types.hpp
index 7c899f03..3871e663 100644
--- a/include/PSX/GPU/gpu_types.hpp
+++ b/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;
diff --git a/src/Library/src/BootLoader/gpu_boot.cpp b/src/Library/src/BootLoader/gpu_boot.cpp
index 7df4500f..8ff9dd8d 100644
--- a/src/Library/src/BootLoader/gpu_boot.cpp
+++ b/src/Library/src/BootLoader/gpu_boot.cpp
@@ -32,10 +32,9 @@ namespace JabyEngine {
                 const CLUT clut {
                     .cmd  = CPU2VRAM::create(AreaU16::create(dst_cord, GPU::SizeU16::create(16, 1))),
                     .data = {
-                        Color::Blue(), Color::White(), 
-                        Color::Blue(), Color::White(), Color::Blue(), Color::White(), Color::Blue(), Color::White(),
-                        Color::Blue(), Color::White(), 
-                        Color::Blue(), Color::White(), Color::Blue(), Color::White(), Color::Blue(), Color::White(), 
+                        Color::Grey(),  Color::White(), 
+                        Color::Black(), Color::Black(), Color::Black(), Color::Black(), Color::Black(), Color::Black(), Color::Black(),
+                        Color::Black(), Color::Black(), Color::Black(), Color::Black(), Color::Black(), Color::Black(), Color::Black(), 
                     }
                 };
 
@@ -93,6 +92,23 @@ namespace JabyEngine {
             }
 
             void setup() {
+                asm("# Planschi1");
+                    auto test = LookUpColor8::from_ids(0xAA, 0xBB);
+                    test.force_read();             
+                asm("# Planschi2");
+                    test.set_lu_id(0xCC, 0);
+                    test.set_lu_id(0xDD, 1);
+                    test.force_read();
+                asm("# Planschi3");
+                    test.set_lu_id(*reinterpret_cast<uint8_t*>(0xAA), 0);
+                    test.set_lu_id(*reinterpret_cast<uint8_t*>(0xDD), 1);
+                    test.force_read();
+                asm("# Planschi4");
+                    test.set_lu_id(*reinterpret_cast<uint8_t*>(0xAA), *reinterpret_cast<uint8_t*>(0xAE));
+                    test.set_lu_id(*reinterpret_cast<uint8_t*>(0xDD), *reinterpret_cast<uint8_t*>(0xDE));
+                    test.force_read();
+                asm("# Planschi5");
+
                 GPU_IO::GP1.write(GPU_IO::Command::Reset());
                 configurate_display();
                 ::JabyEngine::GPU::internal::Display::exchange_buffer_and_display();