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This commit is contained in:
Phillip Stephens
2015-11-02 10:44:46 -08:00
parent 9965f5846d
commit 40ca0c3219
13 changed files with 208 additions and 68 deletions
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59
src/Math.cpp
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@@ -1,9 +1,67 @@
#include "Math.hpp"
#include "CTransform.hpp"
#include "CVector3f.hpp"
#include <cpuid.h>
namespace Zeus
{
static CPUInfo g_cpuFeatures;
void getCpuInfo(int level,
unsigned int* eax,
unsigned int* ebx,
unsigned int* ecx,
unsigned int* edx)
{
#if !GEKKO
#if _WIN32
unsigned int regs[4];
__cpuid(regs, level);
*eax = regs[0];
*ebx = regs[1];
*ecx = regs[2];
*edx = regs[3];
#else
__cpuid(level, *eax, *ebx, *ecx, *edx);
#endif
#endif
}
void detectCPU()
{
#if !GEKKO
static bool isInit = false;
if (isInit)
return;
unsigned int eax, ebx, ecx, edx;
getCpuInfo(0, &eax, &ebx, &ecx, &edx);
*reinterpret_cast<int*>((char*)g_cpuFeatures.cpuVendor) = ebx;
*reinterpret_cast<int*>((char*)g_cpuFeatures.cpuVendor + 4) = edx;
*reinterpret_cast<int*>((char*)g_cpuFeatures.cpuVendor + 8) = ecx;
getCpuInfo(0x80000000, &eax, &ebx, &ecx, &edx);
*reinterpret_cast<int*>((char*)g_cpuFeatures.cpuBrand) = ebx;
*reinterpret_cast<int*>((char*)g_cpuFeatures.cpuBrand + 4) = edx;
*reinterpret_cast<int*>((char*)g_cpuFeatures.cpuBrand + 8) = ecx;
getCpuInfo(1, &eax, &ebx, &ecx, &edx);
memset((bool*)&g_cpuFeatures.AESNI, ((ecx & 0x02000000) != 0), 1);
memset((bool*)&g_cpuFeatures.SSE1, ((edx & 0x02000000) != 0), 1);
memset((bool*)&g_cpuFeatures.SSE2, ((edx & 0x04000000) != 0), 1);
memset((bool*)&g_cpuFeatures.SSE3, ((ecx & 0x00000001) != 0), 1);
memset((bool*)&g_cpuFeatures.SSSE3, ((ecx & 0x00000200) != 0), 1);
memset((bool*)&g_cpuFeatures.SSE41, ((ecx & 0x00080000) != 0), 1);
memset((bool*)&g_cpuFeatures.SSE42, ((ecx & 0x00100000) != 0), 1);
isInit = true;
#endif
}
const CPUInfo cpuFeatures() { return g_cpuFeatures; }
namespace Math
{
const CVector3f kUpVec(0.0, 0.0, 1.0);
@@ -249,4 +307,5 @@ CVector3f radToDeg(const CVector3f& rad) {return rad * kRadToDegVec;}
CVector3f degToRad(const CVector3f& deg) {return deg * kDegToRadVec;}
}
}