Add Xbox build support and modify project structure for compatibility

CMakeLists.txt

@@ -112,6 +112,30 @@ option(ENABLE_NATIVE_OPTIMIZATION "Enables processor-specific optimizations via
 option(CITRA_USE_PRECOMPILED_HEADERS "Use precompiled headers" ON)
 option(CITRA_WARNINGS_AS_ERRORS "Enable warnings as errors" ON)
 
+option(XBOX_BUILD "Build for Xbox" OFF)
+if(XBOX_BUILD)
+    add_definitions(-D__XBOX_BUILD)
+    set(ENABLE_QT OFF)
+    set(ENABLE_SDL2 ON)
+    set(USE_DISCORD_PRESENCE OFF)
+    set(ENABLE_ROOM OFF)
+    set(ENABLE_ROOM_STANDALONE OFF)
+    set(ENABLE_QT_TRANSLATION OFF)
+    set(ENABLE_QT_UPDATE_CHECKER OFF)
+    set(ENABLE_OPENGL ON)
+    set(ENABLE_VULKAN OFF)
+    set(ENABLE_SOFTWARE_RENDERER ON)
+    set(ENABLE_SDL2_FRONTEND ON)
+    set(USE_SYSTEM_SDL2 ON)
+    include_directories(
+    ${PROJECT_SOURCE_DIR}/externals/glad/include
+    ${PROJECT_SOURCE_DIR}/externals/glad/include/KHR
+    ${PROJECT_SOURCE_DIR}/externals/sdl2/SDL/include
+)
+endif()
+
+
+
 # Pass the following values to C++ land
 if (ENABLE_QT)
     add_definitions(-DENABLE_QT)

src/citra_meta/CMakeLists.txt

@@ -1,8 +1,16 @@
+if(XBOX_BUILD)
+    add_library(citra_meta SHARED
+        citra.rc
+        main.cpp
+        precompiled_headers.h
+    )
+else()
     add_executable(citra_meta
         citra.rc
         main.cpp
         precompiled_headers.h
     )
+endif()
 
 set_target_properties(citra_meta PROPERTIES OUTPUT_NAME "azahar")
 

src/citra_meta/main.cpp

@@ -21,6 +21,29 @@ __declspec(dllexport) unsigned long NvOptimusEnablement = 0x00000001;
 }
 #endif
 
+#if defined(_WIN32)
+#define EXPORT __declspec(dllexport)
+#elif defined(__APPLE__)
+#define EXPORT __attribute__((visibility("default")))
+#else
+#define EXPORT
+#endif
+
+#ifdef __XBOX_BUILD
+#include "/Users/moon/Documents/AzaharPlus/externals/sdl2/SDL/include/SDL.h"
+#include "externals/glad/include/glad/glad.h"
+extern "C" int main(int argc, char* argv[]);
+extern "C" EXPORT int external_main(SDL_Window* window, SDL_GLContext context, int argc, const char** argv) {
+    SDL_GL_MakeCurrent(window, context);
+    if (!gladLoadGLLoader((GLADloadproc)SDL_GL_GetProcAddress)) {
+        std::cerr << "Failed to initialize GLAD" << std::endl;
+        return -1;
+    }
+
+    return main(argc, const_cast<char**>(argv));
+}
+#endif
+
 int main(int argc, char* argv[]) {
 #if ENABLE_ROOM
     bool launch_room = false;

src/citra_sdl/emu_window/emu_window_sdl2_gl.cpp

@@ -20,9 +20,14 @@ public:
     using SDL_GLContext = void*;
 
     SDLGLContext() {
+        #ifdef __XBOX_BUILD
+        window = SDL_GL_GetCurrentWindow();
+        context = SDL_GL_GetCurrentContext();
+        #else
         window = SDL_CreateWindow(NULL, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 0, 0,
                                   SDL_WINDOW_HIDDEN | SDL_WINDOW_OPENGL);
         context = SDL_GL_CreateContext(window);
+        #endif
     }
 
     ~SDLGLContext() override {
@@ -81,7 +86,12 @@ EmuWindow_SDL2_GL::EmuWindow_SDL2_GL(Core::System& system_, bool fullscreen, boo
                                            Common::g_scm_branch, Common::g_scm_desc);
 
     // First, try to create a context with the requested type.
+    #ifdef __XBOX_BUILD
+    SDL_Window* render_window = SDL_GL_GetCurrentWindow();
+    LOG_INFO(Frontend, "Using existing window");
+    #else
     render_window = CreateGLWindow(window_title, Settings::values.use_gles.GetValue());
+    #endif
     if (render_window == nullptr) {
         // On failure, fall back to context with flipped type.
         render_window = CreateGLWindow(window_title, !Settings::values.use_gles.GetValue());
@@ -100,7 +110,12 @@ EmuWindow_SDL2_GL::EmuWindow_SDL2_GL(Core::System& system_, bool fullscreen, boo
         Fullscreen();
     }
 
+    #ifdef __XBOX_BUILD
+    window_context = SDL_GL_GetCurrentContext();
+    LOG_INFO(Frontend, "Using existing context");
+    #else
     window_context = SDL_GL_CreateContext(render_window);
+    #endif
     core_context = CreateSharedContext();
     last_saved_context = nullptr;
 

src/video_core/renderer_opengl/gl_shader_util.cpp

@@ -27,7 +27,11 @@ GLuint LoadShader(std::string_view source, GLenum type) {
 #endif // defined(GL_EXT_clip_cull_distance)
 )";
     } else {
+#ifdef __APPLE__
+        preamble = "#version 410 core\n";
+#else
         preamble = "#version 430 core\n";
+#endif
     }
 
     std::string_view debug_type;