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Qt: Add additional early SSE4.1 check on Windows 

reshadefx uses roundss in std::unordered_map initializers, no other way
to stop this. If it's not reshade, it'll probably be something else.
This commit is contained in:
Stenzek 2024-12-03 19:03:16 +10:00
parent 84a1e209ea
commit 3ca2579882
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1 changed files with 39 additions and 0 deletions
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39
src/duckstation-qt/vcruntimecheck.cpp
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@ -1,6 +1,7 @@
// SPDX-FileCopyrightText: 2019-2024 Connor McLaughlin <stenzek@gmail.com>
// SPDX-License-Identifier: CC-BY-NC-ND-4.0
#include "common/intrin.h"
#include "common/windows_headers.h"
#include <shellapi.h>
@ -15,10 +16,48 @@
static constexpr DWORD64 MIN_VERSION = MAKE_VERSION64(14, 38, 33135, 0);
static constexpr const char* DOWNLOAD_URL = "https://aka.ms/vs/17/release/vc_redist.x64.exe";
#ifdef CPU_ARCH_SSE41
// Can't rely on IsProcessorFeaturePresent(PF_SSE4_1_INSTRUCTIONS_AVAILABLE) because that was only added in Win10 2004,
// and you can bet that people with such ancient CPUs probably aren't running the latest OS versions either.
ALWAYS_INLINE static bool CheckCPUIDForSSE4()
{
int result[4] = {};
__cpuid(result, 0);
const int max_function_id = result[0];
if (max_function_id >= 1)
{
__cpuid(result, 1);
// The presence of SSE4.1 is indicated by bit 19 of ECX.
return (result[2] & (1 << 19)) != 0;
}
// Function 1 is not supported, so SSE4.1 cannot be present.
return false;
}
#endif
struct VCRuntimeCheckObject
{
VCRuntimeCheckObject()
{
#ifdef CPU_ARCH_SSE41
// We could end up using SSE4 instructions in fmt etc too. Gotta check for it first.
if (!CheckCPUIDForSSE4())
{
MessageBoxW(nullptr,
L"Your CPU does not support the SSE4.1 instruction set. SSE4.1 is required for this version of "
L"DuckStation. Please download and switch to the legacy SSE2 version. You can download this from "
L"www.duckstation.org under \"Other Platforms\".",
L"Hardware Check Failed", MB_OK);
TerminateProcess(GetCurrentProcess(), 0xFFFFFFFF);
return;
}
#endif
const HMODULE crt_handle = GetModuleHandleW(L"msvcp140.dll");
if (!crt_handle)
return;