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GS: Support local to local transfers that overwrite themselves

This commit is contained in:
refractionpcsx2 2022-03-05 19:39:14 +00:00
parent 5961db6b9b
commit 0c4b85980c
1 changed files with 50 additions and 5 deletions
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55
pcsx2/GS/GSState.cpp
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@ -1705,14 +1705,59 @@ void GSState::Move()
int _sy = sy, _dy = dy; // Faster with local copied variables, compiler optimizations are dumb
if (xinc > 0)
{
for (int y = 0; y < h; y++, _sy += yinc, _dy += yinc)
const int page_width = GSLocalMemory::m_psm[m_env.BITBLTBUF.DPSM].pgs.x;
const int page_height = GSLocalMemory::m_psm[m_env.BITBLTBUF.DPSM].pgs.y;
const int xpage = sx & ~(page_width - 1);
const int ypage = _sy & ~(page_height - 1);
// Copying from itself to itself (rotating textures) used in Gitaroo Man stage 8
// What probably happens is because the copy is buffered, the source stays just ahead of the destination.
if (sbp == dbp && (((_sy < _dy) && ((ypage + page_height) > _dy)) || ((sx < dx) && ((xpage + page_width) > dx))))
{
auto s = getPAHelper(spo, sx, _sy);
auto d = getPAHelper(dpo, dx, _dy);
int starty = 0;
int endy = h;
int y_inc = yinc;
for (int x = 0; x < w; x++)
if (((_sy < _dy) && ((ypage + page_height) > _dy)))
{
pxCopyFn(d, s, x);
_sy += h;
_dy += h;
starty = h-1;
endy = -1;
y_inc = -y_inc;
}
for (int y = starty; y != endy; y+= y_inc, _sy += y_inc, _dy += y_inc)
{
auto s = getPAHelper(spo, sx, _sy);
auto d = getPAHelper(dpo, dx, _dy);
if (((sx < dx) && ((xpage + page_width) > dx)))
{
for (int x = w - 1; x >= 0; x--)
{
pxCopyFn(d, s, x);
}
}
else
{
for (int x = 0; x < w; x++)
{
pxCopyFn(d, s, x);
}
}
}
}
else
{
for (int y = 0; y < h; y++, _sy += yinc, _dy += yinc)
{
auto s = getPAHelper(spo, sx, _sy);
auto d = getPAHelper(dpo, dx, _dy);
for (int x = 0; x < w; x++)
{
pxCopyFn(d, s, x);
}
}
}
}