From 57798eec9f9a7017dd7add477232d6352e3d11f8 Mon Sep 17 00:00:00 2001
From: Jaby Blubb <fenir50@web.de>
Date: Sat, 25 Nov 2023 17:23:49 +0100
Subject: [PATCH] Prepare Font double buffer

---
 Support/include/FontWriter/Type/types.hpp  | 17 +++++++++++++++++
 Support/include/FontWriter/font_writer.hpp |  2 +-
 Support/src/FontWriter/src/font_writer.cpp | 19 ++++++++++++++++++-
 examples/PoolBox/application/src/main.cpp  |  5 +++--
 4 files changed, 39 insertions(+), 4 deletions(-)

diff --git a/Support/include/FontWriter/Type/types.hpp b/Support/include/FontWriter/Type/types.hpp
index 90e7b1fb..1b063294 100644
--- a/Support/include/FontWriter/Type/types.hpp
+++ b/Support/include/FontWriter/Type/types.hpp
@@ -1,10 +1,27 @@
 #pragma once
 #include <PSX/File/file_types.hpp>
+#include <PSX/GPU/gpu_primitives.hpp>
 #include <PSX/GPU/gpu_types.hpp>
 
 namespace JabyEngine {
+    using FontPrimitive = GPU::SPRT::Linked;
+
     struct FontInfo {
         GPU::SizeU16 VRAMSize;
         GPU::SizeU16 FontSize;
     };
+
+    struct FontBufferInfo {
+        FontPrimitive* double_buffer[2];
+        size_t         single_buffer_length;
+
+        static constexpr FontBufferInfo empty() {
+            return FontBufferInfo{.double_buffer = {nullptr, nullptr}, .single_buffer_length = 0};
+        }
+
+        template<size_t N>
+        static constexpr FontBufferInfo from(FontPrimitive (&buffer)[2][N]) {
+            return FontBufferInfo{.double_buffer = {buffer[0], buffer[1]}, .single_buffer_length = N};
+        }
+    };
 }
diff --git a/Support/include/FontWriter/font_writer.hpp b/Support/include/FontWriter/font_writer.hpp
index 352cee29..d2badc56 100644
--- a/Support/include/FontWriter/font_writer.hpp
+++ b/Support/include/FontWriter/font_writer.hpp
@@ -3,6 +3,6 @@
 
 namespace JabyEngine {
     struct FontWriter {
-        static void setup(SimpleTIM vram_dst, const FontInfo& font_info);
+        static void setup(const FontBufferInfo& buffer_info, SimpleTIM vram_dst, const FontInfo& font_info);
     };
 }
\ No newline at end of file
diff --git a/Support/src/FontWriter/src/font_writer.cpp b/Support/src/FontWriter/src/font_writer.cpp
index 10e583bc..992b30ec 100644
--- a/Support/src/FontWriter/src/font_writer.cpp
+++ b/Support/src/FontWriter/src/font_writer.cpp
@@ -2,7 +2,24 @@
 #include <stdio.h>
 
 namespace JabyEngine {
-    void FontWriter :: setup(SimpleTIM vram_dst, const FontInfo& font_info) {
+    struct DoubleBuffer {
+        // Hooks?
+        FontBufferInfo prim_buffer;
+
+        static constexpr DoubleBuffer empty() {
+            return DoubleBuffer{.prim_buffer = FontBufferInfo::empty()};
+        }
+
+        void setup(const FontBufferInfo& buffer_info) {
+            this->prim_buffer = buffer_info;
+        }
+    };
+
+    static auto double_buffer = DoubleBuffer::empty();
+
+    void FontWriter :: setup(const FontBufferInfo& buffer_info, SimpleTIM vram_dst, const FontInfo& font_info) {
+        double_buffer.setup(buffer_info);
+        
         printf("Hello Planschi c:\n");
     }
 }
\ No newline at end of file
diff --git a/examples/PoolBox/application/src/main.cpp b/examples/PoolBox/application/src/main.cpp
index 1aee0ce0..24c249a1 100644
--- a/examples/PoolBox/application/src/main.cpp
+++ b/examples/PoolBox/application/src/main.cpp
@@ -12,13 +12,14 @@
 using namespace JabyEngine;
 using NewFontWriter = ::JabyEngine::FontWriter;
 
-static object::Paco paco;
+static object::Paco  paco;
+static FontPrimitive font_buffer[2][256];
 
 static void setup() {
     static constexpr auto FontTIM = SimpleTIM(320, 0, 320, DefaultFont::Info.VRAMSize.height);
 
     DefaultFont::load(&__heap_start, FontTIM);
-    NewFontWriter::setup(FontTIM, DefaultFont::Info);
+    NewFontWriter::setup(FontBufferInfo::from(font_buffer), FontTIM, DefaultFont::Info);
 
     Assets::load_for_main();
     FontWriter::FontWriter::setup();