ShuriZma
/
pcsx2
mirror of https://github.com/PCSX2/pcsx2.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Implemented freaky VIF Unpack operation for V2 and V3 unpacks, games such as Lemmings and And1 Streetball require this to be determinate! Tested on the PS2 and it certainly is determinate. 

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@2735 96395faa-99c1-11dd-bbfe-3dabce05a288
This commit is contained in:
refraction 2010-03-18 22:15:58 +00:00
parent ccfb4e1ea9
commit ef20c1a93f
1 changed files with 11 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
pcsx2/x86/newVif_UnpackSSE.cpp
View File

@ -121,8 +121,14 @@ else {
xPSHUF.D (destReg, workReg, _v0); xPSHUF.D (destReg, workReg, _v0);
} }
// The V2 + V3 unpacks have freaky behaviour, the manual claims "indeterminate".
// After testing on the PS2, it's very much determinate in 99% of cases
// and games like Lemmings, And1 Streetball rely on this data to be like this!
// I have commented after each shuffle to show what data is going where - Ref
void VifUnpackSSE_Base::xUPK_V2_32() const { void VifUnpackSSE_Base::xUPK_V2_32() const {
xMOV64 (destReg, ptr32[srcIndirect]); xMOV64 (destReg, ptr32[srcIndirect]);
xMOVH.PS (destReg, ptr32[srcIndirect]); //v1v0v1v0
} }
void VifUnpackSSE_Base::xUPK_V2_16() const { void VifUnpackSSE_Base::xUPK_V2_16() const {
@ -134,6 +140,7 @@ else {
xPUNPCK.LWD(destReg, destReg); xPUNPCK.LWD(destReg, destReg);
xShiftR (destReg, 16); xShiftR (destReg, 16);
} }
xPSHUF.D (destReg, destReg, 0x44); //v1v0v1v0
} }
void VifUnpackSSE_Base::xUPK_V2_8() const { void VifUnpackSSE_Base::xUPK_V2_8() const {
@ -146,10 +153,12 @@ else {
xPUNPCK.LWD(destReg, destReg); xPUNPCK.LWD(destReg, destReg);
xShiftR (destReg, 24); xShiftR (destReg, 24);
} }
xPSHUF.D (destReg, destReg, 0x44); //v1v0v1v0
} }
void VifUnpackSSE_Base::xUPK_V3_32() const { void VifUnpackSSE_Base::xUPK_V3_32() const {
xMOV128 (destReg, ptr32[srcIndirect]); xMOV128 (destReg, ptr32[srcIndirect]);
xPSHUF.D (destReg, destReg, 0xA4); //v2v2v1v0
} }
void VifUnpackSSE_Base::xUPK_V3_16() const { void VifUnpackSSE_Base::xUPK_V3_16() const {
@ -161,6 +170,7 @@ else {
xPUNPCK.LWD(destReg, destReg); xPUNPCK.LWD(destReg, destReg);
xShiftR (destReg, 16); xShiftR (destReg, 16);
} }
xPSHUF.D (destReg, destReg, 0xA4); //v2v2v1v0
} }
void VifUnpackSSE_Base::xUPK_V3_8() const { void VifUnpackSSE_Base::xUPK_V3_8() const {
@ -173,6 +183,7 @@ else {
xPUNPCK.LWD(destReg, destReg); xPUNPCK.LWD(destReg, destReg);
xShiftR (destReg, 24); xShiftR (destReg, 24);
} }
xPSHUF.D (destReg, destReg, 0xA4); //v2v2v1v0
} }
void VifUnpackSSE_Base::xUPK_V4_32() const { void VifUnpackSSE_Base::xUPK_V4_32() const {