Warping effect incomplete

[deltaoscarmike]

The preset "Eo.S.+Phat Non-eucliden" relies mostly on the warp effect which is applied between each frames. The rendering is different since the SSE optimization of PresetOutputs::PerPixelMath introduced by commit d157822. The idle preset also reveals this issue, another presets could be affected.
The Winamp/Milkdrop capture confirms the issue.

ProjectM with PerPixelMath_sse

ProjectM with PerPixelMath_c

Winamp/Milkdrop

[revmischa]

cc @labkey-matthewb

[revmischa]

@labkey-matthewb any idea what's up? would like to not have to disable SSE

[mbellew]

I will take a look. Sorry, I didn't see the message from last month.

[mbellew]

Arg, one char fix. I will submit a full unit test soon. Should have included that with the first pull request.

src/libprojectM/MilkdropPresetFactory/PresetFrameIO.cpp

inline __m128 _mm_pow(__m128 x, __m128 y)
{
float X[4];
float Y[4];
_mm_store_ps(X,x);
- _mm_store_ps(Y,x);
+ _mm_store_ps(Y,y);
X[0] = __builtin_powf(X[0],Y[0]);
X[1] = __builtin_powf(X[1],Y[1]);
X[2] = __builtin_powf(X[2],Y[2]);
}

[deltaoscarmike]

Fixed by 17eea19
Thanks @mbellew