gdiplus: Switch to STRETCH_HALFTONE mode before playing a blit record.

This is done even if the emf contains a previous EMR_SETSTRETCHBLTMODE record. Thanks to Sebastián Aedo for some of the testing. Signed-off-by: Huw Davies <huw@codeweavers.com> Signed-off-by: Esme Povirk <esme@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

gdiplus: Switch to STRETCH_HALFTONE mode before playing a blit record.
0d8428fb · Huw Davies · Alexandre Julliard · 74a42c54 · 0d8428fb
Commit 0d8428fb authored Oct 19, 2021 by Huw Davies Committed by Alexandre Julliard Oct 20, 2021
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metafile.c dlls/gdiplus/metafile.c +3 -0

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--- a/dlls/gdiplus/metafile.c
+++ b/dlls/gdiplus/metafile.c
@@ -2486,6 +2486,9 @@ GpStatus WINGDIPAPI GdipPlayMetafileRecord(GDIPCONST GpMetafile *metafile,
                record->nSize = dataSize + 8;
                memcpy(record->dParm, data, dataSize);

+                if (record->iType == EMR_BITBLT || record->iType == EMR_STRETCHBLT)
+                    SetStretchBltMode(metafile->playback_dc, STRETCH_HALFTONE);
+
                if(PlayEnhMetaFileRecord(metafile->playback_dc, metafile->handle_table,
                        record, metafile->handle_count) == 0)
                    ERR("PlayEnhMetaFileRecord failed\n");