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GS/HW: Allow finding targets offset behind FBP for tex-in-rt

This commit is contained in:
Stenzek 2023-05-04 00:32:50 +10:00 committed by refractionpcsx2
parent bb42353c81
commit 5e3e988846
1 changed files with 49 additions and 12 deletions
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61
pcsx2/GS/Renderers/HW/GSTextureCache.cpp
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@ -953,7 +953,7 @@ GSTextureCache::Source* GSTextureCache::LookupSource(const GIFRegTEX0& TEX0, con
if (can_translate)
{
const bool swizzle_match = GSLocalMemory::m_psm[psm].depth == GSLocalMemory::m_psm[t->m_TEX0.PSM].depth;
const GSVector2i page_size = GSLocalMemory::m_psm[t->m_TEX0.PSM].pgs;
const GSVector2i& page_size = GSLocalMemory::m_psm[t->m_TEX0.PSM].pgs;
const GSVector4i page_mask(GSVector4i((page_size.x - 1), (page_size.y - 1)).xyxy());
GSVector4i rect = r & ~page_mask;
@ -968,7 +968,7 @@ GSTextureCache::Source* GSTextureCache::LookupSource(const GIFRegTEX0& TEX0, con
// If it's not page aligned, grab the whole pages it covers, to be safe.
if (GSLocalMemory::m_psm[psm].bpp != GSLocalMemory::m_psm[t->m_TEX0.PSM].bpp)
{
const GSVector2i dst_page_size = GSLocalMemory::m_psm[psm].pgs;
const GSVector2i& dst_page_size = GSLocalMemory::m_psm[psm].pgs;
rect = GSVector4i(rect.x / page_size.x, rect.y / page_size.y, (rect.z + (page_size.x - 1)) / page_size.x, (rect.w + (page_size.y - 1)) / page_size.y);
rect = GSVector4i(rect.x * dst_page_size.x, rect.y * dst_page_size.y, rect.z * dst_page_size.x, rect.w * dst_page_size.y);
}
@ -1031,16 +1031,47 @@ GSTextureCache::Source* GSTextureCache::LookupSource(const GIFRegTEX0& TEX0, con
}
}
}
else if (GSConfig.UserHacks_TextureInsideRt >= GSTextureInRtMode::MergeTargets && !tex_merge_rt)
else
{
dst = t;
x_offset = 0;
y_offset = 0;
tex_merge_rt = true;
// Some games, such as Tomb Raider: Underworld, and Destroy All Humans shift the texture pointer
// back behind the framebuffer, but then offset their texture coordinates to compensate. Why they
// do this, I have no idea... but it's usually only a page wide/high of an offset. Thankfully,
// they also seem to set region clamp with the offset as well, so we can use that to find the target
// that they're expecting to read from. Example from Tomb Raider: TBP0 0xee0 with a TBW of 8, MINU/V
// of 64,32, which means 9 pages down, or 0x1000, which lines up with the main framebuffer. Originally
// I had a check on the end block too, but since the game's a bit rude, it channel shuffles into new
// targets that it never regularly draws to, which means the end block for them won't be correct.
// Omitting that check here seemed less risky than blowing CS targets out...
const GSVector2i& page_size = GSLocalMemory::m_psm[psm].pgs;
const GSOffset offset(GSLocalMemory::m_psm[psm].info, bp, bw, psm);
if (bp < t->m_TEX0.TBP0 && region.HasX() && region.HasY() &&
(region.GetMinX() & (page_size.x - 1)) == 0 && (region.GetMinY() & (page_size.y - 1)) == 0 &&
offset.bn(region.GetMinX(), region.GetMinY()) == t->m_TEX0.TBP0)
{
GL_CACHE("TC: Target 0x%x detected in front of TBP 0x%x with %d,%d offset (%d pages)",
t->m_TEX0.TBP0, TEX0.TBP0, region.GetMinX(), region.GetMinY(),
(region.GetMinY() / page_size.y) * TEX0.TBW + (region.GetMinX() / page_size.x));
x_offset = -region.GetMinX();
y_offset = -region.GetMinY();
dst = t;
tex_merge_rt = false;
found_t = true;
continue;
}
// Prefer a target inside over a target outside.
found_t = false;
continue;
// Strictly speaking this path is no longer needed, but I'm leaving it here for now because Guitar
// Hero III needs it to merge crowd textures.
else if (GSConfig.UserHacks_TextureInsideRt >= GSTextureInRtMode::MergeTargets && !tex_merge_rt)
{
dst = t;
x_offset = 0;
y_offset = 0;
tex_merge_rt = true;
// Prefer a target inside over a target outside.
found_t = false;
continue;
}
}
}
}
@ -2909,8 +2940,14 @@ GSTextureCache::Source* GSTextureCache::CreateSource(const GIFRegTEX0& TEX0, con
GL_CACHE("TC: Sample offset (%d,%d) reduced region directly from target: %dx%d -> %dx%d @ %d,%d",
dst->m_texture->GetWidth(), x_offset, y_offset, dst->m_texture->GetHeight(), w, h, x_offset, y_offset);
src->m_region.SetX(x_offset, x_offset + tw);
src->m_region.SetY(y_offset, y_offset + th);
if (x_offset < 0)
src->m_region.SetX(x_offset, region.GetMaxX() + x_offset);
else
src->m_region.SetX(x_offset, x_offset + tw);
if (y_offset < 0)
src->m_region.SetY(y_offset, region.GetMaxY() + y_offset);
else
src->m_region.SetY(y_offset, y_offset + th);
src->m_texture = dst->m_texture;
src->m_unscaled_size = dst->m_unscaled_size;
src->m_shared_texture = true;