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TextureDecoder.cpp: new SSE2 optimized GX_TF_I8 decoder. Probably not ultimately optimal SSE2 code, but provably better (on my machine) than the memset version. Tested with __rdtsc counts in an independent project. I get about 6-7 FPS more on average during the intro movie playback in Mario Kart Wii. Hope this compiles for GCC okay.

Browse source 
TextureDecoder.cpp: merged two functionally identical decode5A3RGBA and decode5A3rgba methods.
OpcodeDecoding.cpp and DLCache.cpp: optimization for GX_LOAD_XF_REG. The PSUHFB solution sounds better for SSSE3, but this is a small win for the default case.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6692 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
james.jdunne 2010-12-30 19:17:08 +00:00
parent 6cf9b3688d
commit b038df64bf
5 changed files with 164 additions and 66 deletions
Source/Core/VideoCommon/Src
OpcodeDecoding.cpp

34
Source/Core/VideoCommon/Src/OpcodeDecoding.cpp
View file

@ -49,6 +49,24 @@
#endif
u8* g_pVideoData = 0;
DataReadU32xNfunc DataReadU32xFuncs[16] = {
DataReadU32xN<1>,
DataReadU32xN<2>,
DataReadU32xN<3>,
DataReadU32xN<4>,
DataReadU32xN<5>,
DataReadU32xN<6>,
DataReadU32xN<7>,
DataReadU32xN<8>,
DataReadU32xN<9>,
DataReadU32xN<10>,
DataReadU32xN<11>,
DataReadU32xN<12>,
DataReadU32xN<13>,
DataReadU32xN<14>,
DataReadU32xN<15>,
DataReadU32xN<16>
};
extern u8* FAKE_GetFifoStartPtr();
extern u8* FAKE_GetFifoEndPtr();
@ -233,12 +251,13 @@ static void Decode()
{
u32 Cmd2 = DataReadU32();
int transfer_size = ((Cmd2 >> 16) & 15) + 1;
u32 xf_address = Cmd2 & 0xFFFF;
u32 xf_address = Cmd2 & 0xFFFF;
// TODO - speed this up. pshufb?
u32 data_buffer[16];
for (int i = 0; i < transfer_size; i++)
data_buffer[i] = DataReadU32();
u32 data_buffer[16];
DataReadU32xFuncs[transfer_size-1](data_buffer);
LoadXFReg(transfer_size, xf_address, data_buffer);
INCSTAT(stats.thisFrame.numXFLoads);
}
break;
@ -317,7 +336,7 @@ static void DecodeSemiNop()
u8 sub_cmd = DataReadU8();
u32 value = DataReadU32();
LoadCPReg(sub_cmd, value);
INCSTAT(stats.thisFrame.numCPLoads);
INCSTAT(stats.thisFrame.numCPLoads);
}
break;
@ -328,10 +347,9 @@ static void DecodeSemiNop()
u32 address = Cmd2 & 0xFFFF;
// TODO - speed this up. pshufb?
u32 data_buffer[16];
for (int i = 0; i < transfer_size; i++)
data_buffer[i] = DataReadU32();
DataReadU32xFuncs[transfer_size-1](data_buffer);
LoadXFReg(transfer_size, address, data_buffer);
INCSTAT(stats.thisFrame.numXFLoads);
INCSTAT(stats.thisFrame.numXFLoads);
}
break;