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Fix off-by-one error in FoW renderer (#1678) 

The FoW renderer would try drawing to texture coordinates one pixel
too high (i.e. if the texture was 256 pixels high, it would draw to
pixels with 1 <= y <= 256 instead of 0..255).
stable-7
Nicolas Hake 2016-02-08 22:56:32 +01:00
parent 1a82b164b4
commit 92ed1537a0
1 changed files with 8 additions and 8 deletions
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16
src/landscape/fow/C4FoWRegion.cpp
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@ -91,22 +91,22 @@ bool C4FoWRegion::BindFramebuf()
if (y < pSurface->Hgt / 2 && x < pSurface->Wdt) if (y < pSurface->Hgt / 2 && x < pSurface->Wdt)
{ {
// Normals and intensity // Normals and intensity
pNewSurface->SetPixDw(x, pNewSurface->Hgt/2 - y, pSurface->GetPixDw(x, pSurface->Hgt/2 - y, false)); pNewSurface->SetPixDw(x, pNewSurface->Hgt/2 - y - 1, pSurface->GetPixDw(x, pSurface->Hgt/2 - y - 1, false));
pNewBackSurface->SetPixDw(x, pNewBackSurface->Hgt/2 - y, pBackSurface->GetPixDw(x, pBackSurface->Hgt/2 - y, false)); pNewBackSurface->SetPixDw(x, pNewBackSurface->Hgt/2 - y - 1, pBackSurface->GetPixDw(x, pBackSurface->Hgt/2 - y - 1, false));
// Color // Color
pNewSurface->SetPixDw(x, pNewSurface->Hgt/2 - y + iHgt / 2, pSurface->GetPixDw(x, pSurface->Hgt/2 - y + pSurface->Hgt / 2, false)); pNewSurface->SetPixDw(x, pNewSurface->Hgt/2 - y + iHgt / 2 - 1, pSurface->GetPixDw(x, pSurface->Hgt/2 - y + pSurface->Hgt / 2 - 1, false));
pNewBackSurface->SetPixDw(x, pNewBackSurface->Hgt/2 - y + iHgt / 2, pBackSurface->GetPixDw(x, pBackSurface->Hgt/2 - y + pBackSurface->Hgt / 2, false)); pNewBackSurface->SetPixDw(x, pNewBackSurface->Hgt/2 - y + iHgt / 2 - 1, pBackSurface->GetPixDw(x, pBackSurface->Hgt/2 - y + pBackSurface->Hgt / 2 - 1, false));
} }
else else
{ {
// Normals and intensity // Normals and intensity
pNewSurface->SetPixDw(x, pNewSurface->Hgt/2 - y, 0x000000ff); pNewSurface->SetPixDw(x, pNewSurface->Hgt/2 - y - 1, 0x000000ff);
pNewBackSurface->SetPixDw(x, pNewBackSurface->Hgt/2 - y, 0x000000ff); pNewBackSurface->SetPixDw(x, pNewBackSurface->Hgt/2 - y - 1, 0x000000ff);
// Color // Color
pNewSurface->SetPixDw(x, pNewSurface->Hgt/2 - y + iHgt / 2, 0x000000ff); pNewSurface->SetPixDw(x, pNewSurface->Hgt/2 - y + iHgt / 2 - 1, 0x000000ff);
pNewBackSurface->SetPixDw(x, pNewBackSurface->Hgt/2 - y + iHgt / 2, 0x000000ff); pNewBackSurface->SetPixDw(x, pNewBackSurface->Hgt/2 - y + iHgt / 2 - 1, 0x000000ff);
} }
} }
} }