vcl/headless/CairoCommon.cxx |    9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

New commits:
commit 90057e372cd07b41c8dbba4e7b7f107568a5f451
Author:     Caolán McNamara <caol...@redhat.com>
AuthorDate: Mon Apr 25 20:03:35 2022 +0100
Commit:     Caolán McNamara <caol...@redhat.com>
CommitDate: Tue Apr 26 11:37:08 2022 +0200

    Related: tdf#148433 test if CAIRO_OPERATOR_DIFFERENCE is the problem
    
    export SAL_DISABLE_CAIRO_DIFFERENCE=1 to experiment with this
    
    Change-Id: I61ec30c818727cb6ab382b4cf9fe9bd29d8d179d
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/133419
    Tested-by: Jenkins
    Reviewed-by: Caolán McNamara <caol...@redhat.com>

diff --git a/vcl/headless/CairoCommon.cxx b/vcl/headless/CairoCommon.cxx
index cc5d9df10243..02c281fea3cb 100644
--- a/vcl/headless/CairoCommon.cxx
+++ b/vcl/headless/CairoCommon.cxx
@@ -957,6 +957,13 @@ cairo_pattern_t* create_stipple()
 }
 } // end anonymous ns
 
+namespace
+{
+// check for env var that deciding to disable CAIRO_OPERATOR_DIFFERENCE
+const char* pDisableDifference(getenv("SAL_DISABLE_CAIRO_DIFFERENCE"));
+bool bDisableDifference(nullptr != pDisableDifference);
+}
+
 #if defined CAIRO_VERSION && CAIRO_VERSION < CAIRO_VERSION_ENCODE(1, 10, 0)
 #define CAIRO_OPERATOR_DIFFERENCE (static_cast<cairo_operator_t>(23))
 #endif
@@ -973,7 +980,7 @@ void CairoCommon::invert(const basegfx::B2DPolygon& rPoly, 
SalInvert nFlags, boo
 
     cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
 
-    if (cairo_version() >= CAIRO_VERSION_ENCODE(1, 10, 0))
+    if (cairo_version() >= CAIRO_VERSION_ENCODE(1, 10, 0) && 
!bDisableDifference)
     {
         cairo_set_operator(cr, CAIRO_OPERATOR_DIFFERENCE);
     }

Reply via email to