vcl: Add support for backend-dependent blending of bitmaps (mask and alpha)

Change-Id: Iba64eb42965c86ca5655b9a105ef3f397e033ecf

1 files changed, 16 insertions, 0 deletions

diff --git a/vcl/win/source/gdi/salgdi_gdiplus.cxx b/vcl/win/source/gdi/salgdi_gdiplus.cxx
index 65dbdd84acec..094a05c62b16 100644
--- a/vcl/win/source/gdi/salgdi_gdiplus.cxx
+++ b/vcl/win/source/gdi/salgdi_gdiplus.cxx
@@ -43,6 +43,22 @@ bool WinSalGraphics::drawPolyLine(
             eLineJoin, eLineCap);
 }
 
+bool WinSalGraphics::blendBitmap(
+    const SalTwoRect& rTR,
+    const SalBitmap& rBmp)
+{
+    return mpImpl->blendBitmap(rTR, rBmp);
+}
+
+bool WinSalGraphics::blendAlphaBitmap(
+    const SalTwoRect& rTR,
+    const SalBitmap& rSrcBmp,
+    const SalBitmap& rMaskBmp,
+    const SalBitmap& rAlphaBmp)
+{
+    return mpImpl->blendAlphaBitmap(rTR, rSrcBmp, rMaskBmp, rAlphaBmp);
+}
+
 bool WinSalGraphics::drawAlphaBitmap(
     const SalTwoRect& rTR,
     const SalBitmap& rSrcBitmap,