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Don't use lookup tables. It's better to use CPU registers and reduce memory accesses.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3909 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Nolan Check
2009-07-30 20:29:52 +00:00
parent dcae5938c9
commit 8ab4814d73
8 changed files with 58 additions and 108 deletions
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31
Source/Core/VideoCommon/Src/LookUpTables.h
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@ -20,15 +20,28 @@
#include "Common.h"
extern const int lut3to8[8];
extern const int lut4to8[16];
extern const int lut5to8[32];
extern int lut6to8[64];
extern float lutu8tosfloat[256];
extern float lutu8toufloat[256];
extern float luts8tosfloat[256];
extern float shiftLookup[32];
inline u8 Convert3To8(u8 v)
{
// Swizzle bits: 00000123 -> 12312312
return (v << 5) | (v << 2) | (v >> 1);
}
void InitLUTs();
inline u8 Convert4To8(u8 v)
{
// Swizzle bits: 00001234 -> 12341234
return (v << 4) | v;
}
inline u8 Convert5To8(u8 v)
{
// Swizzle bits: 00012345 -> 12345123
return (v << 3) | (v >> 2);
}
inline u8 Convert6To8(u8 v)
{
// Swizzle bits: 00123456 -> 12345612
return (v << 2) | (v >> 4);
}
#endif // _LOOKUPTABLES_H