avoiding nesting dcs on the same window concurrently

[wxWidgets.git] / src / dfb / wrapdfb.cpp

diff --git a/src/dfb/wrapdfb.cpp b/src/dfb/wrapdfb.cpp
index c23796696367b73be73d6991e29ef745cecd00aa..afd6ee064b0e8a57d1fa7bfbe790dfbd5cbeebcf 100644 (file)
--- a/src/dfb/wrapdfb.cpp
+++ b/src/dfb/wrapdfb.cpp
@@ -116,7 +116,8 @@ int wxIDirectFBSurface::GetDepth()
     return DFB_BITS_PER_PIXEL(format);
 }
 
     return DFB_BITS_PER_PIXEL(format);
 }
 

-wxIDirectFBSurfacePtr wxIDirectFBSurface::CreateCompatible(const wxSize& sz)
+wxIDirectFBSurfacePtr
+wxIDirectFBSurface::CreateCompatible(const wxSize& sz, int flags)

 {
     wxSize size(sz);
     if ( size == wxDefaultSize )
 {
     wxSize size(sz);
     if ( size == wxDefaultSize )


@@ -135,6 +136,17 @@ wxIDirectFBSurfacePtr wxIDirectFBSurface::CreateCompatible(const wxSize& sz)
     desc.width = size.x;
     desc.height = size.y;
 
     desc.width = size.x;
     desc.height = size.y;
 

+    // filter out caps that don't make sense for a new compatible surface:
+    int caps = desc.caps;
+    caps &= ~DSCAPS_PRIMARY;
+    caps &= ~DSCAPS_SUBSURFACE;
+    if ( flags & CreateCompatible_NoBackBuffer )
+    {
+        caps &= ~DSCAPS_DOUBLE;
+        caps &= ~DSCAPS_TRIPLE;
+    }
+    desc.caps = (DFBSurfaceCapabilities)caps;
+

     wxIDirectFBSurfacePtr snew(wxIDirectFB::Get()->CreateSurface(&desc));
     if ( !snew )
         return NULL;
     wxIDirectFBSurfacePtr snew(wxIDirectFB::Get()->CreateSurface(&desc));
     if ( !snew )
         return NULL;