From 9628300ff514cd36d035ec2055b6c46b674698a6 Mon Sep 17 00:00:00 2001
From: RedBlackAka <140876408+RedBlackAka@users.noreply.github.com>
Date: Fri, 20 Feb 2026 21:34:21 +0100
Subject: [PATCH] citra_meta: Use integrated SSE4.2 detection method (#1753)

---
 src/citra_meta/main.cpp | 35 +++++------------------------------
 1 file changed, 5 insertions(+), 30 deletions(-)

diff --git a/src/citra_meta/main.cpp b/src/citra_meta/main.cpp
index f1dba092f..92ea7756f 100644
--- a/src/citra_meta/main.cpp
+++ b/src/citra_meta/main.cpp
@@ -26,43 +26,18 @@ __declspec(dllexport) unsigned long NvOptimusEnablement = 0x00000001;
 #endif
 
 #if CITRA_HAS_SSE42
-#if defined(_WIN32)
+#include "common/x64/cpu_detect.h"
+#ifdef _WIN32
 #include <windows.h>
-#if defined(_MSC_VER)
-#include <intrin.h>
-#else
-#include <cpuid.h>
-#endif // _MSC_VER
-#else
-#include <cpuid.h>
-#endif // _WIN32
-
-static bool CpuSupportsSSE42() {
-    uint32_t ecx;
-
-#if defined(_MSC_VER)
-    int cpu_info[4];
-    __cpuid(cpu_info, 1);
-    ecx = static_cast<uint32_t>(cpu_info[2]);
-#elif defined(__GNUC__) || defined(__clang__)
-    uint32_t eax, ebx, edx;
-    if (!__get_cpuid(1, &eax, &ebx, &ecx, &edx)) {
-        return false;
-    }
-#else
-#error "Unsupported compiler"
 #endif
 
-    // Bit 20 of ECX indicates SSE4.2
-    return (ecx & (1 << 20)) != 0;
-}
-
 static bool CheckAndReportSSE42() {
-    if (!CpuSupportsSSE42()) {
+    const auto& caps = Common::GetCPUCaps();
+    if (!caps.sse4_2) {
         const std::string error_msg =
             "This application requires a CPU with SSE4.2 support or higher.\nTo run on unsupported "
             "systems, recompile the application with the ENABLE_SSE42 option disabled.";
-#if defined(_WIN32)
+#ifdef _WIN32
         MessageBoxA(nullptr, error_msg.c_str(), "Incompatible CPU", MB_OK | MB_ICONERROR);
 #endif
         std::cerr << "Error: " << error_msg << std::endl;