Fix dxcanvas gradient glitches

* moved common gradient step size code
out to canvastools to share
* reverted back to manual polygon rendering
for anisotrophic rect and ellipse gradients
* fixed tilemode==none case for bitmap fills

1 files changed, 1 insertions, 1 deletions

diff --git a/canvas/source/directx/dx_impltools.cxx b/canvas/source/directx/dx_impltools.cxx
index 4f5b92d6bcb5..0067ea8e9b71 100755
--- a/canvas/source/directx/dx_impltools.cxx
+++ b/canvas/source/directx/dx_impltools.cxx
@@ -199,7 +199,7 @@ namespace dxcanvas
             {
                 const sal_uInt32 nPoints( rPoly.count() );
 
-                if( !nPoints )
+                if( nPoints < 2 )
                     return;
 
                 rOutput->StartFigure();