do not completely disable a test for !OpenGL if OpenGL may be broken

The code comes from f062b89b27 and is
more like patching things up. A proper fix should be elsewhere, but
at least patch this up more to be less wrong.

Change-Id: Ic9b24680688d104028b1e1bf6fccc16e6f786aa8
Reviewed-on: https://gerrit.libreoffice.org/83880
Tested-by: Jenkins
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>

sd/qa/unit/export-tests.cxx

@@ -21,6 +21,7 @@
 #include <rtl/ustring.hxx>
 
 #include <vcl/opengl/OpenGLWrapper.hxx>
+#include <vcl/skia/SkiaHelper.hxx>
 
 #include <com/sun/star/drawing/XDrawPage.hpp>
 #include <com/sun/star/drawing/XDrawPagesSupplier.hpp>
@@ -280,8 +281,12 @@ void SdExportTest::testTransparentBackground()
 
 void SdExportTest::testMediaEmbedding()
 {
-    if (!OpenGLWrapper::isVCLOpenGLEnabled())
+#ifdef _WIN32
+    // This seems broken. This test should not be disabled for all cases except when OpenGL
+    // is found to be working, just because in some OpenGL setups this breaks (per the commit log message).
+    if (!OpenGLWrapper::isVCLOpenGLEnabled() && !SkiaHelper::isVCLSkiaEnabled())
         return;
+#endif
 
     ::sd::DrawDocShellRef xDocShRef = loadURL(m_directories.getURLFromSrc("/sd/qa/unit/data/media_embedding.odp"), ODP);