JCS-Prod/ProtoTank
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CPU features check

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This commit is contained in:
JackCarterSmith 2024-09-27 21:29:32 +02:00
parent 9f8c5b42b4
commit d152296d43
Signed by: JackCarterSmith
GPG Key ID: 832E52F4E23F8F24
2 changed files with 79 additions and 1 deletions
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78
Engine/Utils/Perfs.hpp
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@ -1,6 +1,84 @@
#pragma once
#include <cstddef>
#include <cpuid.h>
#ifndef __cplusplus
#error This header requires C++
#endif
//
// CPU related functions
//
inline bool PerfsCPUSIMDReady(void) noexcept {
#if !defined(DISABLE_INTRINSICS)
int CPUInfo[4] = {-1};
#if defined(__GNUC__)
__cpuid(0, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);
#else
__cpuid(CPUInfo, 0);
#endif
#ifdef __AVX2__
if (CPUInfo[0] < 7)
return false;
#else
if (CPUInfo[0] < 1)
return false;
#endif
#if defined(__GNUC__)
__cpuid(1, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);
#else
__cpuid(CPUInfo, 1);
#endif
#if defined(__AVX2__) || defined(AVX2_INTRINSICS)
// The compiler can emit FMA3 instructions even without explicit intrinsics use
if ((CPUInfo[2] & 0x38081001) != 0x38081001)
return false; // No F16C/AVX/OSXSAVE/SSE4.1/FMA3/SSE3 support
#elif defined(FMA3_INTRINSICS) && defined(F16C_INTRINSICS)
if ((CPUInfo[2] & 0x38081001) != 0x38081001)
return false; // No F16C/AVX/OSXSAVE/SSE4.1/FMA3/SSE3 support
#elif defined(FMA3_INTRINSICS)
if ((CPUInfo[2] & 0x18081001) != 0x18081001)
return false; // No AVX/OSXSAVE/SSE4.1/FMA3/SSE3 support
#elif defined(F16C_INTRINSICS)
if ((CPUInfo[2] & 0x38080001) != 0x38080001)
return false; // No F16C/AVX/OSXSAVE/SSE4.1/SSE3 support
#elif defined(__AVX__) || defined(AVX_INTRINSICS)
if ((CPUInfo[2] & 0x18080001) != 0x18080001)
return false; // No AVX/OSXSAVE/SSE4.1/SSE3 support
#elif defined(SSE4_INTRINSICS)
if ((CPUInfo[2] & 0x80001) != 0x80001)
return false; // No SSE3/SSE4.1 support
#elif defined(SSE3_INTRINSICS)
if (!(CPUInfo[2] & 0x1))
return false; // No SSE3 support
#endif
// The x64 processor model requires SSE2 support, but no harm in checking
if ((CPUInfo[3] & 0x6000000) != 0x6000000)
return false; // No SSE2/SSE support
#if defined(__AVX2__) || defined(AVX2_INTRINSICS)
#if defined(__GNUC__)
__cpuid_count(7, 0, CPUInfo[0], CPUInfo[1], CPUInfo[2], CPUInfo[3]);
#else
__cpuidex(CPUInfo, 7, 0);
#endif
if (!(CPUInfo[1] & 0x20))
return false; // No AVX2 support
#endif
return true;
#endif
return true;
}
//
// RAM related functions
//
const size_t PerfsGetVirtMem(void);
const size_t PerfsGetPhysMem(void);

2
conanfile.py
View File

@ -34,7 +34,7 @@ class ProtoTank(ConanFile):
self.options["sfml"].shared = True
def requirements(self):
self.requires("sfml/2.6.1")
self.requires("sfml/[~2.6]")
# def layout(self):
# cmake_layout(self)