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GS/HW: Adjust TextureMinMax end coordinate when point sampling

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Stenzek 2023-04-08 18:11:11 +10:00 committed by refractionpcsx2
parent e0cfa2dff3
commit f16a291412
1 changed files with 18 additions and 0 deletions
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18
pcsx2/GS/GSState.cpp
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@ -3434,7 +3434,25 @@ GSState::TextureMinMaxResult GSState::GetTextureMinMax(GIFRegTEX0 TEX0, GIFRegCL
// Optimisation aims to reduce the amount of texture loaded to only the bit which will be read
GSVector4 st = m_vt.m_min.t.xyxy(m_vt.m_max.t);
if (linear)
{
st += GSVector4(-0.5f, 0.5f).xxyy();
}
else
{
// When drawing a sprite with point sampling, the UV range sampled is exclusive of the ending
// coordinate. Except, when the position is also offset backwards. We only do this for the
// hardware renderers currently, it does create some issues in software. Hardware needs the
// UVs to be within the target size, otherwise it can't translate sub-targets (see 10 Pin -
// Champions Alley and Miami Vice).
if (!clamp_to_tsize && m_vt.m_primclass == GS_SPRITE_CLASS && PRIM->FST == 1)
{
const int mask = (m_vt.m_min.p.floor() != m_vt.m_min.p).mask();
if (!(mask & 0x1))
st.z = std::max(st.x, st.z - 0.5f);
if (!(mask & 0x2))
st.w = std::max(st.y, st.w - 0.5f);
}
}
// Adjust texture range when sprites get scissor clipped. Since we linearly interpolate, this
// optimization doesn't work when perspective correction is enabled.