Road to 0.6.0

- readd the c++ linear allocator for 3ds
- start switching from PD::Vec to std::vector
- Add Color::Hex as constexpr for compiletime color converts
- Add FNV Hasing functions
- Make UI7 ids be able to be generated at compile time
- Added a Throw Function (for whatever)
- Added HexCHar2Int (replaces the lookup table)
- Made u128 fully constexpr

backends/3ds/CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.22)
 
-project(pd-3ds LANGUAGES CXX VERSION 0.5.0)
+project(pd-3ds LANGUAGES CXX VERSION 0.6.0)
 
 set(SRC
     source/bknd-gfx.cpp

backends/3ds/include/pd-3ds/bknd-gfx.hpp

@@ -27,19 +27,10 @@ SOFTWARE.
 #include <3ds.h>
 #include <citro3d.h>
 
+#include <pd-3ds/linearAllocator.hpp>
 #include <pd/lithium/lithium.hpp>
 
 namespace PD {
-template <typename T>
-class LinearAlloc : public Allocator<T> {
- public:
-  LinearAlloc() = default;
-  ~LinearAlloc() = default;
-
-  /** Never forget the sizeof(T) again (most painful bug i created) */
-  T* Allocate(size_t n) override { return (T*)linearAlloc(n * sizeof(T)); }
-  void Deallocate(T* ptr) { linearFree(ptr); }
-};
 class GfxC3D : public GfxDriver {
  public:
   GfxC3D() : GfxDriver("Citro3D") {}
@@ -59,8 +50,8 @@ class GfxC3D : public GfxDriver {
       PD::Li::Texture::Filter filter =
           PD::Li::Texture::Filter::LINEAR) override;
 
-  Vec<Li::Vertex, LinearAlloc<Li::Vertex>> VertexBuffer;
-  Vec<u16, LinearAlloc<u16>> IndexBuffer;
+  std::vector<Li::Vertex, LinearAllocator<Li::Vertex>> VertexBuffer;
+  std::vector<u16, LinearAllocator<u16>> IndexBuffer;
   int pLocProjection = 0;
   DVLB_s* ShaderCode;
   shaderProgram_s Shader;

backends/3ds/include/pd-3ds/linearAllocator.hpp

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <3ds.h>
+
+#include <pd/core/common.hpp>
+
+// Custom C++ Allocator class to interface with libctru linear heap memory
+// based on this guide:
+// https://johnfarrier.com/custom-allocators-in-c-high-performance-memory-management/
+
+namespace PD {
+template <typename T>
+class LinearAllocator {
+ public:
+  using value_type = T;
+  LinearAllocator() noexcept = default;
+  template <typename U>
+  constexpr LinearAllocator(const LinearAllocator<U>&) noexcept {}
+
+  T* allocate(std::size_t n) {
+    if (n > max_size()) {
+      throw std::runtime_error("[PD] LinearAllocator: Bad alloc!");
+    }
+    return static_cast<T*>(linearAlloc(n * sizeof(T)));
+  }
+  void deallocate(T* p, std::size_t) noexcept { linearFree(p); }
+
+  template <class U, class... Args>
+  void construct(U* p, Args&&... args) {
+    ::new ((void*)p) U(std::forward<Args>(args)...);
+  }
+
+  template <class U>
+  void destroy(U* p) {
+    p->~U();
+  }
+
+  friend bool operator==(const LinearAllocator, const LinearAllocator) {
+    return true;
+  }
+  friend bool operator!=(const LinearAllocator, const LinearAllocator) {
+    return false;
+  }
+
+  // Use linearSpace free as max_size to not allocate out of bounds
+  // or to b eable to see a crash report screen.
+  size_t max_size() const noexcept { return linearSpaceFree(); }
+};
+}  // namespace PD

backends/3ds/source/bknd-gfx.cpp

@@ -93,8 +93,8 @@ int GetBPP(Li::Texture::Type type) {
 }
 
 void GfxC3D::Init() {
-  VertexBuffer.Resize(4 * 8192);
-  IndexBuffer.Resize(6 * 8192);
+  VertexBuffer.resize(4 * 8192);
+  IndexBuffer.resize(6 * 8192);
 
   Flags |= LiBackendFlags_FlipUV_Y;
 
@@ -179,10 +179,10 @@ void GfxC3D::RenderDrawData(const std::vector<PD::Li::Command::Ref>& Commands) {
     BindTex(Tex->Address);
     auto bufInfo = C3D_GetBufInfo();
     BufInfo_Init(bufInfo);
-    BufInfo_Add(bufInfo, VertexBuffer.Data(), sizeof(Li::Vertex), 3, 0x210);
+    BufInfo_Add(bufInfo, VertexBuffer.data(), sizeof(Li::Vertex), 3, 0x210);
 
     C3D_DrawElements(GPU_TRIANGLES, CurrentIndex - StartIndex,
-                     C3D_UNSIGNED_SHORT, IndexBuffer.Data() + StartIndex);
+                     C3D_UNSIGNED_SHORT, IndexBuffer.data() + StartIndex);
   }
   C3D_DepthTest(true, GPU_GREATER, GPU_WRITE_ALL);
 }