Initial Cross Platform Work

backends/3ds/include/li_backend_c3d.hpp

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+#pragma once
+
+/*
+MIT License
+
+Copyright (c) 2024 - 2025 tobid7
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#pragma once
+
+#include <3ds.h>
+#include <citro3d.h>
+
+#include <pd/core/core.hpp>
+#include <pd/lithium/backend.hpp>
+
+namespace PD {
+template <typename T>
+class LinearAlloc : public Allocator<T> {
+ public:
+  LinearAlloc() = default;
+  ~LinearAlloc() = default;
+
+  T* Allocate(size_t n) override { return (T*)linearAlloc(n); }
+  void Deallocate(T* ptr) { linearFree(ptr); }
+};
+namespace LI {
+class Backend_C3D : public PD::LI::Backend {
+ public:
+  Backend_C3D() : LI::Backend("Citro3D") {}
+  ~Backend_C3D() {}
+  PD_SMART_CTOR(Backend_C3D)
+
+  void Init() override;
+
+  void Deinit() override;
+
+  void NewFrame() override;
+
+  void BindTexture(PD::LI::TexAddress addr) override;
+
+  void RenderDrawData(const PD::Vec<PD::LI::Command::Ref>& Commands) override;
+
+  PD::LI::Texture::Ref LoadTexture(
+      const std::vector<PD::u8>& pixels, int w, int h,
+      PD::LI::Texture::Type type = PD::LI::Texture::Type::RGBA32,
+      PD::LI::Texture::Filter filter =
+          PD::LI::Texture::Filter::LINEAR) override;
+
+ private:
+  Vec<Vertex, LinearAlloc<Vertex>> VertexBuffer;
+  Vec<u16, LinearAlloc<u16>> IndexBuffer;
+  size_t CurrentVertex = 0;
+  size_t CurrentIndex = 0;
+  Mat4 Projection;
+  int pLocProjection = 0;
+  DVLB_s* ShaderCode;
+  shaderProgram_s Shader;
+  C3D_AttrInfo ShaderInfo;
+  // For Stats
+  PD::u32 num_vtx = 0;
+  PD::u32 num_idx = 0;
+};
+}  // namespace LI
+}  // namespace PD

backends/3ds/include/pd_hid_3ds.hpp

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+#pragma once
+
+/*
+MIT License
+Copyright (c) 2024 - 2025 René Amthor (tobid7)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+ */
+
+#include <pd/core/hid_driver.hpp>
+
+namespace PD {
+class Hid3DS : public Hid {
+ public:
+  /**
+   * Constructor to setup Key binds
+   */
+  Hid3DS();
+  ~Hid3DS() = default;
+  PD_SMART_CTOR(Hid3DS)
+
+  /**
+   * Overrideing the Update Function for Input Checking etc
+   */
+  void Update() override;
+};
+}  // namespace PD

backends/3ds/include/pd_net_3ds.hpp

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+#pragma once
+
+/*
+MIT License
+Copyright (c) 2024 - 2025 René Amthor (tobid7)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+ */
+
+#include <3ds.h>
+#include <arpa/inet.h>
+#include <malloc.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+
+#include <pd/net/backend.hpp>
+
+namespace PD {
+class NetBackend3DS : public Net::Backend {
+ public:
+  NetBackend3DS() : Net::Backend("3DS") {}
+  ~NetBackend3DS() = default;
+  PD_SMART_CTOR(NetBackend3DS)
+
+  bool Init() override {
+    pSocBuffer = (uint32_t*)memalign(pSocAlign, pSocBufferSize);
+    Result ret = 0;
+    if (pSocBuffer == NULL) {
+      return false;
+    }
+
+    if ((ret = socInit(pSocBuffer, pSocBufferSize)) != 0) {
+      return false;
+    }
+    return true;
+  }
+
+  void Deinit() override { socExit(); }
+  int NewSocket() override { return socket(AF_INET, SOCK_STREAM, 0); }
+  void Close(int sock_id) override { close(sock_id); }
+  int GetInvalidRef() const override { return -1; }
+
+  bool Bind(int sock_id, u16 port) {
+    sockaddr_in addr{};
+    addr.sin_family = AF_INET;
+    addr.sin_port = htons(port);
+    addr.sin_addr.s_addr = INADDR_ANY;
+    return bind(sock_id, (sockaddr*)&addr, sizeof(addr)) != -1;
+  }
+  bool Listen(int sock_id, int backlog = 5) {
+    return listen(sock_id, backlog) != -1;
+  }
+  bool Accept(int sock_id, Net::Socket::Ref client) {
+    int client_soc = accept(sock_id, nullptr, nullptr);
+    if (client_soc == -1) {
+      return false;
+    }
+    client->pSocket = client_soc;
+    return true;
+  }
+  bool Connect(int sock_id, const std::string& ip, u16 port) {
+    sockaddr_in addr{};
+    addr.sin_family = AF_INET;
+    addr.sin_port = htons(port);
+    inet_pton(AF_INET, ip.c_str(), &addr.sin_addr);
+    return connect(sock_id, (sockaddr*)&addr, sizeof(addr)) != -1;
+  }
+  int Send(int sock_id, const std::string& data) {
+    return send(sock_id, data.c_str(), static_cast<int>(data.size()), 0);
+  }
+  int Receive(int sock_id, std::string& data, int size = 1024) {
+    char* tmp = new char[size];
+    int res = recv(sock_id, tmp, size, 0);
+    if (res > 0) {
+      data.assign(tmp, res);
+    }
+    delete[] tmp;
+    return res;
+  }
+
+ private:
+  /** using libctru u32 here */
+  const uint32_t pSocAlign = 0x1000;
+  const uint32_t pSocBufferSize = 0x100000;
+  uint32_t* pSocBuffer = nullptr;
+};
+}  // namespace PD