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Fixed: DCanvas::FillSimplePoly must set dc_destorg 

- dc_destorg is normally set to the upper-left corner of the view window.
  If there is a border, then this won't coincide with the upper-left
  corner of the screen, and DCanvas::FillSimplePoly would merrily write off
  the end of the screen buffer.
This commit is contained in:
Marisa Heit 2016-10-31 22:34:46 -05:00
parent 6e6249f896
commit 8d7e400f8e
1 changed files with 8 additions and 0 deletions
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8
src/v_draw.cpp
View File

@ -1330,6 +1330,13 @@ void DCanvas::FillSimplePoly(FTexture *tex, FVector2 *points, int npoints,
return;
}
BYTE *destorgsave = dc_destorg;
dc_destorg = screen->GetBuffer();
if (dc_destorg == NULL)
{
I_FatalError("Attempt to write to buffer of hardware canvas");
}
scalex /= tex->Scale.X;
scaley /= tex->Scale.Y;
@ -1432,6 +1439,7 @@ void DCanvas::FillSimplePoly(FTexture *tex, FVector2 *points, int npoints,
pt1 = pt2;
pt2--; if (pt2 < 0) pt2 = npoints;
} while (pt1 != botpt);
dc_destorg = destorgsave;
#endif
}