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Added some missing logic to gifTransferDummy() which takes into account completing partial transfers. 

For example, if a path3 transfer has a giftag with nloop = 30, and we only 'looped' 20 times, then the next time gifTransferDummy() is run for path3, it will treat the incoming data as the rest of that gs primitive (instead of a new giftag), finishing the rest of the 10 loops. (Then it just continues normally, treating the next 16bytes of data as a new giftag...)

Its odd that I wasn't doing this before and games seemed to work fine, but might be needed for a few games...

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1829 96395faa-99c1-11dd-bbfe-3dabce05a288
This commit is contained in:
cottonvibes 2009-09-16 08:51:14 +00:00
parent 5378760fcf
commit 7593072214
2 changed files with 46 additions and 29 deletions
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2
pcsx2/GS.h
View File

@ -89,7 +89,7 @@ struct GIFTAG
struct GIFPath
{
GIFTAG tag;
u32 curreg; // Not Used Anymore
u32 curreg;
u32 _pad[3];
u8 regs[16];

53
pcsx2/MTGS.cpp
View File

@ -230,37 +230,41 @@ void mtgsThreadObject::Reset()
}
#define incPmem(x) { \
pMem += (x*16); \
size += (x*16); \
pMem += (x) * 16; \
size += (x) * 16; \
if ((pathidx==GIF_PATH_1)&&(pMem>=vuMemEnd)) pMem -= 0x4000; \
}
__forceinline int mtgsThreadObject::_gifTransferDummy(GIF_PATH pathidx, const u8* pMem, u32 size)
{
GIFPath& path = m_path[pathidx];
const u8* vuMemEnd = pMem + (size<<4); // End of VU Mem
u32 finish = (pathidx == GIF_PATH_1) ? 0x4000 : (size<<4);
u32 oldSize = 0;
u32 numRegs = 0;
const u8* vuMemEnd = pMem + (size<<4); // End of VU Mem
bool pathContinue = !!path.tag.nloop; // Continue From Last Transfer
bool EOP = 0;
bool hasRegAD = 0;
size = 0;
while(!EOP && size < finish) {
if(!pathContinue) {
path.SetTag(pMem);
path.PrepRegs(!path.tag.flg);
EOP = (pathidx == GIF_PATH_2) ? 0 : path.tag.eop;
incPmem(1);
if (!path.tag.nloop) continue;
int numRegs = ((path.tag.nreg-1)&0xf)+1;
}
pathContinue = 0;
oldSize = size;
numRegs = ((path.tag.nreg-1)&0xf)+1;
EOP = ((pathidx == GIF_PATH_2) ? 0 : path.tag.eop);
// Assume Path3progress as transfer mode here, and switch to IMAGE mode if needed.
// Path3progress gets reset to STOPPED on EOP only (ie, not on 'partial' transfers)
if( pathidx == GIF_PATH_3 )
Path3progress = TRANSFER_MODE;
if (!path.tag.nloop || size >= finish) continue;
switch(path.tag.flg) {
case GIF_FLG_PACKED:
for (u32 i = 0; i < path.tag.nloop; i++) {
for (int j = 0; j < numRegs; j++) {
for (u32 j = path.curreg; j < numRegs; j++) {
if (path.regs[j] == 0x0e) {
const int handler = pMem[8];
if (handler >= 0x60 && handler < 0x63) {
@ -270,8 +274,8 @@ __forceinline int mtgsThreadObject::_gifTransferDummy(GIF_PATH pathidx, const u8
hasRegAD = 1;
}
incPmem(1);
if (size >= finish)
goto endLoop;
path.curreg = 0;
if (size >= finish) goto endLoop;
}
if (!hasRegAD) { // Optimization: No Need to Loop
incPmem(numRegs * (path.tag.nloop-1));
@ -285,22 +289,35 @@ __forceinline int mtgsThreadObject::_gifTransferDummy(GIF_PATH pathidx, const u8
break;
case GIF_FLG_IMAGE:
case GIF_FLG_IMAGE2:
if( pathidx == GIF_PATH_3 )
Path3progress = IMAGE_MODE;
incPmem(path.tag.nloop);
break;
}
}
endLoop:
// This handles cases where we skipped too far ahead because of bulky IMAGE tags
// or the RegAD tag (they don't check against 'finish' on every qwc like the others).
// This handles cases where we skipped too far ahead because of bulky IMAGE/REGLIST tags
// or PACKED tags w/o RegA+D (they don't compare 'size < finish' every qwc).
if (size > finish) size = finish;
// Sets information to resume partial transfers
if (!EOP && path.tag.nloop && pathidx) {
int diff = (size - oldSize) / 16;
if (!(path.tag.flg&2)) { // PACKED/REGLIST
path.curreg = (diff % path.tag.nloop);
path.tag.nloop -= (diff / numRegs);
}
else path.tag.nloop -= diff;
}
else path.tag.nloop = 0;
if (pathidx == GIF_PATH_3) {
gif->madr += size;
gif->qwc -= (size/16);
if( EOP ) Path3progress = STOPPED_MODE;
if (EOP) Path3progress = STOPPED_MODE;
else if (path.tag.flg&2) Path3progress = IMAGE_MODE;
else Path3progress = TRANSFER_MODE;
}
return (size / 16);
}