Torque3D/Engine/source/math/test/mMatrixTest.cpp

//-----------------------------------------------------------------------------
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#ifdef TORQUE_TESTS_ENABLED
#include "testing/unitTesting.h"
#include "platform/platform.h"
#include "math/mMatrix.h"
#include "math/mRandom.h"

extern void default_matF_x_matF_C(const F32 *a, const F32 *b, F32 *mresult);
extern void mInstallLibrary_ASM();

// If we're x86 and not Mac, then include these. There's probably a better way to do this.
#if defined(WIN32) && defined(TORQUE_CPU_X86)
void Athlon_MatrixF_x_MatrixF(const F32 *matA, const F32 *matB, F32 *result);
void SSE_MatrixF_x_MatrixF(const F32 *matA, const F32 *matB, F32 *result);
#endif

#if defined( __VEC__ )
extern void vec_MatrixF_x_MatrixF(const F32 *matA, const F32 *matB, F32 *result);
#endif

TEST(MatrixF, MultiplyImplmentations)
{
   F32 m1[16], m2[16], mrC[16];

   // I am not positive that the best way to do this is to use random numbers
   // but I think that using some kind of standard matrix may not always catch
   // all problems.
   for (S32 i = 0; i < 16; i++)
   {
      m1[i] = gRandGen.randF();
      m2[i] = gRandGen.randF();
   }

   // C will be the baseline
   default_matF_x_matF_C(m1, m2, mrC);

#if defined(WIN32) && defined(TORQUE_CPU_X86)
   // Check the CPU info
   U32 cpuProperties = Platform::SystemInfo.processor.properties;
   bool same;

   // Test SSE if it is available
   F32 mrSSE[16];
   if (cpuProperties & CPU_PROP_SSE)
   {
      SSE_MatrixF_x_MatrixF(m1, m2, mrSSE);

      same = true;
      for (S32 i = 0; i < 16; i++)
         same &= mIsEqual(mrC[i], mrSSE[i]);

      EXPECT_TRUE(same) << "Matrix multiplication verification failed. (C vs. SSE)";
   }

   same = true;
#endif

   // If Altivec exists, test it!
#if defined(__VEC__)
   bool same = false;
   F32 mrVEC[16];

   vec_MatrixF_x_MatrixF(m1, m2, mrVEC);

   for (S32 i = 0; i < 16; i++)
      same &= isEqual(mrC[i], mrVEC[i]);

   EXPECT_TRUE(same) << "Matrix multiplication verification failed. (C vs. Altivec)";
#endif
}

#endif