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Use SSSE3 shuffle for DataReader's DataReadU32xN in VideoCommon. The function is used for reading up to 16 u32's at a time (512-bits) and then converting endianness.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6802 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
xsacha
2011-01-10 13:14:56 +00:00
parent f49efa8868
commit f9e4e73e42
4 changed files with 78 additions and 10 deletions
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52
Source/Core/VideoCommon/Src/DataReader.h
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@ -15,11 +15,17 @@
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#ifndef _DATAREADER_H
#define _DATAREADER_H
extern u8* g_pVideoData;
#if _M_SSE >= 0x301 && !(defined __GNUC__ && !defined __SSSE3__)
#include <tmmintrin.h>
#endif
__forceinline void DataSkip(u32 skip)
{
g_pVideoData += skip;
@ -64,6 +70,49 @@ __forceinline u32 DataReadU32()
return tmp;
}
typedef void (*DataReadU32xNfunc)(u32 *buf);
extern DataReadU32xNfunc DataReadU32xFuncs[16];
#if _M_SSE >= 0x301
const __m128i mask1 = _mm_set_epi8(15,14,13,12,11,10,9,8,7,6,5,4,0,1,2,3);
const __m128i mask2 = _mm_set_epi8(15,14,13,12,11,10,9,8,4,5,6,7,0,1,2,3);
const __m128i mask3 = _mm_set_epi8(15,14,13,12,8,9,10,11,4,5,6,7,0,1,2,3);
const __m128i mask4 = _mm_set_epi8(12,13,14,15,8,9,10,11,4,5,6,7,0,1,2,3);
template<unsigned int N>
void DataReadU32xN_SSSE3(u32 *bufx16)
{
__m128i* store = (__m128i *)bufx16;
__m128i* load = (__m128i *)g_pVideoData;
switch(N)
{
case 13: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 9: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 5: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 1: _mm_storeu_si128(store, _mm_shuffle_epi8(_mm_loadu_si128(load), mask1));
break;
case 14: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 10: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 6: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 2: _mm_storeu_si128(store, _mm_shuffle_epi8(_mm_loadu_si128(load), mask2));
break;
case 15: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 11: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 7: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 3: _mm_storeu_si128(store, _mm_shuffle_epi8(_mm_loadu_si128(load), mask3));
break;
case 16: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 12: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 8: _mm_storeu_si128(store++, _mm_shuffle_epi8(_mm_loadu_si128(load++), mask4));
case 4: _mm_storeu_si128(store, _mm_shuffle_epi8(_mm_loadu_si128(load), mask4));
break;
}
g_pVideoData += (sizeof(u32) * N);
}
#endif
template<unsigned int N>
void DataReadU32xN(u32 *bufx16)
{
@ -87,9 +136,6 @@ void DataReadU32xN(u32 *bufx16)
g_pVideoData += (sizeof(u32) * N);
}
typedef void (*DataReadU32xNfunc)(u32 *buf);
extern DataReadU32xNfunc DataReadU32xFuncs[16];
__forceinline u32 DataReadU32Unswapped()
{
u32 tmp = *(u32*)g_pVideoData;