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VertexLoader: load scale factor as const, this will save some assembler instructions

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This commit is contained in:
degasus
2014-01-21 18:54:16 +01:00
parent f90fe90320
commit c613868f57
2 changed files with 15 additions and 10 deletions
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12
Source/Core/VideoCommon/VertexLoader_Position.cpp
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@ -61,13 +61,13 @@ MOVUPS(MOffset(EDI, 0), XMM0);
*/
template <typename T>
float PosScale(T val)
float PosScale(T val, float scale)
{
return val * posScale;
return val * scale;
}
template <>
float PosScale(float val)
float PosScale(float val, float scale)
{
return val;
}
@ -76,9 +76,10 @@ template <typename T, int N>
void LOADERDECL Pos_ReadDirect()
{
static_assert(N <= 3, "N > 3 is not sane!");
auto const scale = posScale;
for (int i = 0; i < 3; ++i)
DataWrite(i<N ? PosScale(DataRead<T>()) : 0.f);
DataWrite(i<N ? PosScale(DataRead<T>(), scale) : 0.f);
LOG_VTX();
}
@ -91,9 +92,10 @@ void LOADERDECL Pos_ReadIndex()
auto const index = DataRead<I>();
auto const data = reinterpret_cast<const T*>(cached_arraybases[ARRAY_POSITION] + (index * arraystrides[ARRAY_POSITION]));
auto const scale = posScale;
for (int i = 0; i < 3; ++i)
DataWrite(i<N ? PosScale(Common::FromBigEndian(data[i])) : 0.f);
DataWrite(i<N ? PosScale(Common::FromBigEndian(data[i]), scale) : 0.f);
LOG_VTX();
}