yuzu: Check Vulkan on startup with a child

src/yuzu/main.cpp

@@ -3853,6 +3853,21 @@ void GMainWindow::SetDiscordEnabled([[maybe_unused]] bool state) {
 #endif
 
 int main(int argc, char* argv[]) {
+#ifdef _WIN32
+    char variable_contents[32];
+    const DWORD startup_check_var =
+        GetEnvironmentVariable(STARTUP_CHECK_ENV_VAR, variable_contents, 32);
+    if (startup_check_var != 0) {
+        std::fprintf(stderr, "perform statup checks\n");
+        CheckVulkan();
+        return 0;
+    } else {
+        std::fprintf(stderr, "%d\n", StartupChecks());
+    }
+#elif YUZU_UNIX
+#error "Unimplemented"
+#endif
+
     Common::DetachedTasks detached_tasks;
     MicroProfileOnThreadCreate("Frontend");
     SCOPE_EXIT({ MicroProfileShutdown(); });

src/yuzu/startup_checks.cpp

@@ -3,6 +3,15 @@
 
 #include "video_core/vulkan_common/vulkan_wrapper.h"
 
+#ifdef _WIN32
+#include <cstring> // for memset, strncpy
+#include <processthreadsapi.h>
+#include <windows.h>
+#elif defined(YUZU_UNIX)
+#include <unistd.h>
+#endif
+
+#include <cstdio>
 #include <filesystem>
 #include <fstream>
 #include "common/fs/fs.h"
@@ -10,7 +19,7 @@
 #include "common/logging/log.h"
 #include "video_core/vulkan_common/vulkan_instance.h"
 #include "video_core/vulkan_common/vulkan_library.h"
-#include "yuzu/check_vulkan.h"
+#include "yuzu/startup_checks.h"
 #include "yuzu/uisettings.h"
 
 constexpr char TEMP_FILE_NAME[] = "vulkan_check";
@@ -51,3 +60,53 @@ bool CheckVulkan() {
     std::filesystem::remove(temp_file_loc);
     return true;
 }
+
+bool StartupChecks() {
+#ifdef _WIN32
+    const bool env_var_set = SetEnvironmentVariableA(STARTUP_CHECK_ENV_VAR, "ON");
+    if (!env_var_set) {
+        LOG_ERROR(Frontend, "SetEnvironmentVariableA failed to set {}, {}", STARTUP_CHECK_ENV_VAR,
+                  GetLastError());
+        return false;
+    }
+
+    STARTUPINFOA startup_info;
+    PROCESS_INFORMATION process_info;
+
+    std::memset(&startup_info, '\0', sizeof(startup_info));
+    std::memset(&process_info, '\0', sizeof(process_info));
+    startup_info.cb = sizeof(startup_info);
+
+    char p_name[255];
+    std::strncpy(p_name, "yuzu.exe", 255);
+
+    // TODO: use argv[0] instead of yuzu.exe
+    const bool process_created = CreateProcessA(nullptr,       // lpApplicationName
+                                                p_name,        // lpCommandLine
+                                                nullptr,       // lpProcessAttributes
+                                                nullptr,       // lpThreadAttributes
+                                                false,         // bInheritHandles
+                                                0,             // dwCreationFlags
+                                                nullptr,       // lpEnvironment
+                                                nullptr,       // lpCurrentDirectory
+                                                &startup_info, // lpStartupInfo
+                                                &process_info  // lpProcessInformation
+    );
+    if (!process_created) {
+        LOG_ERROR(Frontend, "CreateProcessA failed, {}", GetLastError());
+        return false;
+    }
+
+    // wait until the processs exits
+    DWORD exit_code = STILL_ACTIVE;
+    while (exit_code == STILL_ACTIVE) {
+        GetExitCodeProcess(process_info.hProcess, &exit_code);
+    }
+
+    std::fprintf(stderr, "exit code: %d\n", exit_code);
+
+    CloseHandle(process_info.hProcess);
+    CloseHandle(process_info.hThread);
+#endif
+    return true;
+}

src/yuzu/startup_checks.h

@@ -3,4 +3,7 @@
 
 #pragma once
 
+constexpr char STARTUP_CHECK_ENV_VAR[] = "YUZU_DO_STARTUP_CHECKS";
+
 bool CheckVulkan();
+bool StartupChecks();