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GS-hw: Attempt to improve half screen detection

This commit is contained in:
refractionpcsx2 2022-03-10 17:08:50 +00:00
parent 0c4b85980c
commit 9d003486c2
1 changed files with 23 additions and 2 deletions
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25
pcsx2/GS/Renderers/HW/GSRendererHW.cpp
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@ -572,9 +572,30 @@ void GSRendererHW::ConvertSpriteTextureShuffle(bool& write_ba, bool& read_ba)
//
// 32bits emulation means we can do the effect once but double the size.
// Test cases: Crash Twinsantiy and DBZ BT3
const int height_delta = m_src->m_valid_rect.height() - m_r.height();
// Test Case: NFS: HP2 splits the effect h:256 and h:192 so 64
half_bottom = abs(height_delta) <= 64;
// Other games: Midnight Club 3 headlights, black bar in Xenosaga 3 dialogue,
// Firefighter FD18 fire occlusion, PSI Ops half screen green overlay, Lord of the Rings - Two Towers,
// Demon Stone , Sonic Unleashed, Lord of the Rings Two Towers,
// Superman Shadow of Apokolips, Matrix Path of Neo, Big Mutha Truckers
int maxvert = 0;
int minvert = 4096;
for (size_t i = 0; i < count; i ++)
{
int YCord = 0;
if (!PRIM->FST)
YCord = (int)((1 << m_context->TEX0.TH) * (v[i].ST.T / v[i].RGBAQ.Q));
else
YCord = (v[i].V >> 4);
if (maxvert < YCord)
maxvert = YCord;
if (minvert > YCord)
minvert = YCord;
}
// Check if it's a full screen blit (or at least half screen), ignore small writes.
half_bottom = minvert == 0 && m_r.height() <= maxvert && (m_r.height()+1) >= 224;
break;
}