video_core: add null backend

src/yuzu_cmd/emu_window/emu_window_sdl2_null.cpp

@@ -0,0 +1,51 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <cstdlib>
+#include <memory>
+#include <string>
+
+#include <fmt/format.h>
+
+#include "common/logging/log.h"
+#include "common/scm_rev.h"
+#include "video_core/renderer_null/renderer_null.h"
+#include "yuzu_cmd/emu_window/emu_window_sdl2_null.h"
+
+#ifdef YUZU_USE_EXTERNAL_SDL2
+// Include this before SDL.h to prevent the external from including a dummy
+#define USING_GENERATED_CONFIG_H
+#include <SDL_config.h>
+#endif
+
+#include <SDL.h>
+
+EmuWindow_SDL2_Null::EmuWindow_SDL2_Null(InputCommon::InputSubsystem* input_subsystem_,
+                                         Core::System& system_, bool fullscreen)
+    : EmuWindow_SDL2{input_subsystem_, system_} {
+    const std::string window_title = fmt::format("yuzu {} | {}-{} (Vulkan)", Common::g_build_name,
+                                                 Common::g_scm_branch, Common::g_scm_desc);
+    render_window =
+        SDL_CreateWindow(window_title.c_str(), SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
+                         Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height,
+                         SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+
+    SetWindowIcon();
+
+    if (fullscreen) {
+        Fullscreen();
+        ShowCursor(false);
+    }
+
+    OnResize();
+    OnMinimalClientAreaChangeRequest(GetActiveConfig().min_client_area_size);
+    SDL_PumpEvents();
+    LOG_INFO(Frontend, "yuzu Version: {} | {}-{} (Null)", Common::g_build_name,
+             Common::g_scm_branch, Common::g_scm_desc);
+}
+
+EmuWindow_SDL2_Null::~EmuWindow_SDL2_Null() = default;
+
+std::unique_ptr<Core::Frontend::GraphicsContext> EmuWindow_SDL2_Null::CreateSharedContext() const {
+    return std::make_unique<DummyContext>();
+}