Don't set wxINTERPOLATION_GOOD quality by default in wxGDIPlusContext.

This is inconsistent with wxOSX and also doesn't play well with the existence
of wxINTERPOLATION_DEFAULT which is different from wxINTERPOLATION_GOOD.

See #14134.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76305 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -13,6 +13,9 @@ Changes in behaviour not resulting in compilation errors
 --------------------------------------------------------
 
 - wxRibbonButtonBar::DeleteButton() now deletes and not just removes the button.
+- Default interpolation mode in wxGDIPlusContext under MSW is now
+  wxINTERPOLATION_DEFAULT and not wxINTERPOLATION_GOOD as in 3.0 for
+  consistency with OS X, call SetInterpolationQuality() explicitly if needed.
 
 
 3.1.0: (released 2014-xx-xx)

src/msw/graphics.cpp

@@ -1422,8 +1422,6 @@ void wxGDIPlusContext::Init(Graphics* graphics, int width, int height)
     m_context->SetPixelOffsetMode(PixelOffsetModeHalf);
     m_context->SetSmoothingMode(SmoothingModeHighQuality);
 
-    SetInterpolationQuality(wxINTERPOLATION_GOOD);
-
     m_state1 = m_context->Save();
     m_state2 = m_context->Save();
 }