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Use SSE4.1, if available, for spline normals.

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Unknown W. Brackets 2015-02-25 19:24:12 -08:00
parent f070d6f5ed
commit 588efa5a71
1 changed files with 32 additions and 6 deletions
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38
GPU/Common/SplineCommon.cpp
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@ -18,6 +18,7 @@
#include <string.h>
#include <algorithm>
#include "Common/CPUDetect.h"
#include "Core/Config.h"
#include "GPU/Common/SplineCommon.h"
@ -34,16 +35,28 @@ inline __m128 SSECrossProduct(__m128 a, __m128 b)
return _mm_sub_ps(left, right);
}
inline __m128 SSENormalizeMultiplier(__m128 v)
inline __m128 SSENormalizeMultiplierSSE2(__m128 v)
{
const __m128 sq = _mm_mul_ps(v, v);
const __m128 r2 = _mm_shuffle_ps(sq, sq, _MM_SHUFFLE(0, 0, 0, 1));
const __m128 r3 = _mm_shuffle_ps(sq, sq, _MM_SHUFFLE(0, 0, 0, 2));
const __m128 res = _mm_add_ss(r3, _mm_add_ss(r2, sq));
__m128 rt = _mm_rsqrt_ss(res);
const __m128 rt = _mm_rsqrt_ss(res);
return _mm_shuffle_ps(rt, rt, _MM_SHUFFLE(0, 0, 0, 0));
}
inline __m128 SSENormalizeMultiplierSSE4(__m128 v)
{
return _mm_rsqrt_ps(_mm_dp_ps(v, v, 0xFF));
}
inline __m128 SSENormalizeMultiplier(bool useSSE4, __m128 v)
{
if (useSSE4)
return SSENormalizeMultiplierSSE4(v);
return SSENormalizeMultiplierSSE2(v);
}
#endif
@ -238,7 +251,7 @@ static inline void AccumulateWeighted(Vec4f &out, const Vec4f &in, const Vec4f &
#endif
}
template <bool origNrm, bool origCol, bool origTc>
template <bool origNrm, bool origCol, bool origTc, bool useSSE4>
static void SplinePatchFullQuality(u8 *&dest, u16 *indices, int &count, const SplinePatchLocal &spatch, u32 origVertType, int quality, int maxVertices) {
// Full (mostly) correct tessellation of spline patches.
// Not very fast.
@ -351,7 +364,12 @@ static void SplinePatchFullQuality(u8 *&dest, u16 *indices, int &count, const Sp
}
vert->pos = vert_pos;
if (origNrm) {
#ifdef _M_SSE
const __m128 normalize = SSENormalizeMultiplier(useSSE4, vert_nrm.vec);
vert_nrm.vec = _mm_mul_ps(vert_nrm.vec, normalize);
#else
vert_nrm.Normalize();
#endif
vert->nrm = vert_nrm;
} else {
vert->nrm.SetZero();
@ -392,7 +410,7 @@ static void SplinePatchFullQuality(u8 *&dest, u16 *indices, int &count, const Sp
const __m128 down = _mm_sub_ps(vb_pos.vec, vt_pos.vec);
const __m128 crossed = SSECrossProduct(right, down);
const __m128 normalize = SSENormalizeMultiplier(crossed);
const __m128 normalize = SSENormalizeMultiplier(useSSE4, crossed);
Vec3f finalNrm = _mm_mul_ps(normalize, _mm_mul_ps(crossed, facing));
vertices[v * (patch_div_s + 1) + u].nrm = finalNrm;
@ -428,14 +446,22 @@ static void SplinePatchFullQuality(u8 *&dest, u16 *indices, int &count, const Sp
}
}
template <bool origNrm, bool origCol, bool origTc>
static inline void SplinePatchFullQualityDispatch4(u8 *&dest, u16 *indices, int &count, const SplinePatchLocal &spatch, u32 origVertType, int quality, int maxVertices) {
if (cpu_info.bSSE4_1)
SplinePatchFullQuality<origNrm, origCol, origTc, true>(dest, indices, count, spatch, origVertType, quality, maxVertices);
else
SplinePatchFullQuality<origNrm, origCol, origTc, false>(dest, indices, count, spatch, origVertType, quality, maxVertices);
}
template <bool origNrm, bool origCol>
static inline void SplinePatchFullQualityDispatch3(u8 *&dest, u16 *indices, int &count, const SplinePatchLocal &spatch, u32 origVertType, int quality, int maxVertices) {
bool origTc = (origVertType & GE_VTYPE_TC_MASK) != 0;
if (origTc)
SplinePatchFullQuality<origNrm, origCol, true>(dest, indices, count, spatch, origVertType, quality, maxVertices);
SplinePatchFullQualityDispatch4<origNrm, origCol, true>(dest, indices, count, spatch, origVertType, quality, maxVertices);
else
SplinePatchFullQuality<origNrm, origCol, false>(dest, indices, count, spatch, origVertType, quality, maxVertices);
SplinePatchFullQualityDispatch4<origNrm, origCol, false>(dest, indices, count, spatch, origVertType, quality, maxVertices);
}
template <bool origNrm>