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Commit bb9c1878 authored by Vincent Povirk's avatar Vincent Povirk Committed by Alexandre Julliard
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gdiplus: Correct the coordinate transform for non-rectangular parallelograms.

Apparently matrices in gdiplus don't work the way I think they do.
parent 7791f02f
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Showing with 4 additions and 4 deletions
dlls/gdiplus/graphics.c
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......@@ -2030,11 +2030,11 @@ GpStatus WINGDIPAPI GdipDrawImagePointsRect(GpGraphics *graphics, GpImage *image
}
m11 = (ptf[1].X - ptf[0].X) / srcwidth;
m12 = (ptf[2].X - ptf[0].X) / srcheight;
mdx = ptf[0].X - m11 * srcx - m12 * srcy;
m21 = (ptf[1].Y - ptf[0].Y) / srcwidth;
m21 = (ptf[2].X - ptf[0].X) / srcheight;
mdx = ptf[0].X - m11 * srcx - m21 * srcy;
m12 = (ptf[1].Y - ptf[0].Y) / srcwidth;
m22 = (ptf[2].Y - ptf[0].Y) / srcheight;
mdy = ptf[0].Y - m21 * srcx - m22 * srcy;
mdy = ptf[0].Y - m12 * srcx - m22 * srcy;
stat = GdipCreateMatrix2(m11, m12, m21, m22, mdx, mdy, &dst_to_src);
if (stat != Ok) return stat;
......
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