[test] Add group-unaligned

Test case for:
   Bug 22441 -- Unexpected shift with push_group and pop_group
   https://bugs.freedesktop.org/show_bug.cgi?id=22441

This is a test that demonstrates the error in the pdf backend when using
groups on surfaces with non-integer sizes. In order to create such a
surface, we need to update the boilerplate to use doubles instead of
integers when specifying the surface size.

42 files changed, 312 insertions, 235 deletions

diff --git a/boilerplate/cairo-boilerplate-beos-private.h b/boilerplate/cairo-boilerplate-beos-private.h
index 1d800c26..4505d738 100644
--- a/boilerplate/cairo-boilerplate-beos-private.h
+++ b/boilerplate/cairo-boilerplate-beos-private.h
@@ -10,10 +10,10 @@ CAIRO_BEGIN_DECLS
 extern cairo_surface_t *
 _cairo_boilerplate_beos_create_surface (const char              *name,
 					cairo_content_t          content,
-					int                      width,
-					int                      height,
-					int                      max_width,
-					int                      max_height,
+					double                      width,
+					double                      height,
+					double                      max_width,
+					double                      max_height,
 					cairo_boilerplate_mode_t mode,
 					int                      id,
 					void                   **closure);
@@ -24,10 +24,10 @@ _cairo_boilerplate_beos_cleanup (void* closure);
 extern cairo_surface_t *
 _cairo_boilerplate_beos_create_surface_for_bitmap (const char              *name,
 						   cairo_content_t          content,
-						   int                      width,
-						   int                      height,
-						   int                      max_width,
-						   int                      max_height,
+						   double                      width,
+						   double                      height,
+						   double                      max_width,
+						   double                      max_height,
 						   cairo_boilerplate_mode_t mode,
 						   int                      id,
 						   void                   **closure);
diff --git a/boilerplate/cairo-boilerplate-beos.cpp b/boilerplate/cairo-boilerplate-beos.cpp
index 497d9277..f5276276 100644
--- a/boilerplate/cairo-boilerplate-beos.cpp
+++ b/boilerplate/cairo-boilerplate-beos.cpp
@@ -172,8 +172,8 @@ struct beos_boilerplate_closure
 cairo_surface_t *
 _cairo_boilerplate_beos_create_surface (const char			 *name,
 					cairo_content_t			  content,
-					int				  width,
-					int				  height,
+					double				  width,
+					double				  height,
 					cairo_boilerplate_mode_t	  mode,
 					void				**closure)
 {
@@ -207,8 +207,8 @@ _cairo_boilerplate_beos_cleanup (void* closure)
 cairo_surface_t *
 _cairo_boilerplate_beos_create_surface_for_bitmap (const char			 *name,
 						   cairo_content_t		  content,
-						   int				  width,
-						   int				  height,
+						   double				  width,
+						   double				  height,
 						   cairo_boilerplate_mode_t	  mode,
 						   void				**closure)
 {
diff --git a/boilerplate/cairo-boilerplate-directfb-private.h b/boilerplate/cairo-boilerplate-directfb-private.h
index 87d1b8b0..a34edcba 100644
--- a/boilerplate/cairo-boilerplate-directfb-private.h
+++ b/boilerplate/cairo-boilerplate-directfb-private.h
@@ -10,10 +10,10 @@ CAIRO_BEGIN_DECLS
 extern cairo_surface_t *
 _cairo_boilerplate_directfb_create_surface (const char			 *name,
 					    cairo_content_t		  content,
-					    int				  width,
-					    int				  height,
-					    int				  max_width,
-					    int				  max_height,
+					    double				  width,
+					    double				  height,
+					    double				  max_width,
+					    double				  max_height,
 					    cairo_boilerplate_mode_t	  mode,
 					    int                           id,
 					    void			**closure);
diff --git a/boilerplate/cairo-boilerplate-directfb.c b/boilerplate/cairo-boilerplate-directfb.c
index 7a6462f6..ea7a8ad9 100644
--- a/boilerplate/cairo-boilerplate-directfb.c
+++ b/boilerplate/cairo-boilerplate-directfb.c
@@ -171,10 +171,10 @@ ERROR:
 cairo_surface_t *
 _cairo_boilerplate_directfb_create_surface (const char			 *name,
 					    cairo_content_t		  content,
-					    int				  width,
-					    int				  height,
-					    int				  max_width,
-					    int				  max_height,
+					    double				  width,
+					    double				  height,
+					    double				  max_width,
+					    double				  max_height,
 					    cairo_boilerplate_mode_t	  mode,
 					    int                           id,
 					    void			**closure)
diff --git a/boilerplate/cairo-boilerplate-glitz-agl.c b/boilerplate/cairo-boilerplate-glitz-agl.c
index dd10a00e..03d0423b 100644
--- a/boilerplate/cairo-boilerplate-glitz-agl.c
+++ b/boilerplate/cairo-boilerplate-glitz-agl.c
@@ -101,10 +101,10 @@ _cairo_boilerplate_glitz_agl_create_surface_internal (glitz_format_name_t		 form
 cairo_surface_t *
 _cairo_boilerplate_glitz_agl_create_surface (const char			 *name,
 					     cairo_content_t 		  content,
-					     int			  width,
-					     int			  height,
-					     int			  max_width,
-					     int			  max_height,
+					     double			  width,
+					     double			  height,
+					     double			  max_width,
+					     double			  max_height,
 					     cairo_boilerplate_mode_t	  mode,
 					     int                          id,
 					     void			**closure)
diff --git a/boilerplate/cairo-boilerplate-glitz-glx.c b/boilerplate/cairo-boilerplate-glitz-glx.c
index 4c26b877..a1981ebf 100644
--- a/boilerplate/cairo-boilerplate-glitz-glx.c
+++ b/boilerplate/cairo-boilerplate-glitz-glx.c
@@ -153,11 +153,11 @@ _cairo_boilerplate_glitz_glx_create_surface_internal (glitz_format_name_t		 form
 
 cairo_surface_t *
 _cairo_boilerplate_glitz_glx_create_surface (const char			 *name,
-					     cairo_content_t 		  content,
-					     int			  width,
-					     int			  height,
-					     int			  max_width,
-					     int			  max_height,
+					     cairo_content_t		  content,
+					     double			  width,
+					     double			  height,
+					     double			  max_width,
+					     double			  max_height,
 					     cairo_boilerplate_mode_t	  mode,
 					     int                          id,
 					     void			**closure)
diff --git a/boilerplate/cairo-boilerplate-glitz-private.h b/boilerplate/cairo-boilerplate-glitz-private.h
index 052c7e06..62904c7c 100644
--- a/boilerplate/cairo-boilerplate-glitz-private.h
+++ b/boilerplate/cairo-boilerplate-glitz-private.h
@@ -41,10 +41,10 @@ typedef struct _glitz_target_closure_base {
 cairo_surface_t *
 _cairo_boilerplate_glitz_glx_create_surface (const char			 *name,
 					     cairo_content_t		  content,
-					     int			  width,
-					     int			  height,
-					     int			  max_width,
-					     int			  max_height,
+					     double			  width,
+					     double			  height,
+					     double			  max_width,
+					     double			  max_height,
 					     cairo_boilerplate_mode_t	  mode,
 					     int                          id,
 					     void			**closure);
@@ -57,10 +57,10 @@ _cairo_boilerplate_glitz_glx_cleanup (void *closure);
 cairo_surface_t *
 _cairo_boilerplate_glitz_agl_create_surface (const char			 *name,
 					     cairo_content_t		  content,
-					     int			  width,
-					     int			  height,
-					     int			  max_width,
-					     int			  max_height,
+					     double			  width,
+					     double			  height,
+					     double			  max_width,
+					     double			  max_height,
 					     cairo_boilerplate_mode_t	  mode,
 					     int                          id,
 					     void			**closure);
@@ -73,10 +73,10 @@ _cairo_boilerplate_glitz_agl_cleanup (void *closure);
 cairo_surface_t *
 _cairo_boilerplate_glitz_wgl_create_surface (const char			 *name,
 					     cairo_content_t		  content,
-					     int			  width,
-					     int			  height,
-					     int			  max_width,
-					     int			  max_height,
+					     double			  width,
+					     double			  height,
+					     double			  max_width,
+					     double			  max_height,
 					     cairo_boilerplate_mode_t	  mode,
 					     int                          id,
 					     void			**closure);
diff --git a/boilerplate/cairo-boilerplate-glitz-wgl.c b/boilerplate/cairo-boilerplate-glitz-wgl.c
index dfd764f6..9cd11b60 100644
--- a/boilerplate/cairo-boilerplate-glitz-wgl.c
+++ b/boilerplate/cairo-boilerplate-glitz-wgl.c
@@ -100,10 +100,10 @@ _cairo_boilerplate_glitz_wgl_create_surface_internal (glitz_format_name_t		 form
 cairo_surface_t *
 _cairo_boilerplate_glitz_wgl_create_surface (const char			 *name,
 					     cairo_content_t		  content,
-					     int			  width,
-					     int			  height,
-					     int			  max_width,
-					     int			  max_height,
+					     double			  width,
+					     double			  height,
+					     double			  max_width,
+					     double			  max_height,
 					     cairo_boilerplate_mode_t	  mode,
 					     int                          id,
 					     void			**closure)
diff --git a/boilerplate/cairo-boilerplate-pdf-private.h b/boilerplate/cairo-boilerplate-pdf-private.h
index 3c34c3ef..f4affe76 100644
--- a/boilerplate/cairo-boilerplate-pdf-private.h
+++ b/boilerplate/cairo-boilerplate-pdf-private.h
@@ -30,10 +30,10 @@
 cairo_surface_t *
 _cairo_boilerplate_pdf_create_surface (const char		 *name,
 				       cairo_content_t		  content,
-				       int			  width,
-				       int			  height,
-				       int			  max_width,
-				       int			  max_height,
+				       double			  width,
+				       double			  height,
+				       double			  max_width,
+				       double			  max_height,
 				       cairo_boilerplate_mode_t	  mode,
 				       int                        id,
 				       void			**closure);
diff --git a/boilerplate/cairo-boilerplate-pdf.c b/boilerplate/cairo-boilerplate-pdf.c
index c3289f8f..3ac380c2 100644
--- a/boilerplate/cairo-boilerplate-pdf.c
+++ b/boilerplate/cairo-boilerplate-pdf.c
@@ -51,10 +51,10 @@ typedef struct _pdf_target_closure
 cairo_surface_t *
 _cairo_boilerplate_pdf_create_surface (const char		 *name,
 				       cairo_content_t		  content,
-				       int			  width,
-				       int			  height,
-				       int			  max_width,
-				       int			  max_height,
+				       double			  width,
+				       double			  height,
+				       double			  max_width,
+				       double			  max_height,
 				       cairo_boilerplate_mode_t	  mode,
 				       int                        id,
 				       void			**closure)
@@ -69,8 +69,8 @@ _cairo_boilerplate_pdf_create_surface (const char		 *name,
 
     *closure = ptc = xmalloc (sizeof (pdf_target_closure_t));
 
-    ptc->width = width;
-    ptc->height = height;
+    ptc->width = ceil (width);
+    ptc->height = ceil (height);
 
     xasprintf (&ptc->filename, "%s.out.pdf", name);
     xunlink (ptc->filename);
@@ -85,7 +85,7 @@ _cairo_boilerplate_pdf_create_surface (const char		 *name,
 	ptc->target = surface;
 	surface = cairo_surface_create_similar (ptc->target,
 						CAIRO_CONTENT_COLOR,
-						width, height);
+						ptc->width, ptc->height);
 	if (cairo_surface_status (surface))
 	    goto CLEANUP_TARGET;
     } else {
diff --git a/boilerplate/cairo-boilerplate-ps-private.h b/boilerplate/cairo-boilerplate-ps-private.h
index b97c7db9..7bcce1c0 100644
--- a/boilerplate/cairo-boilerplate-ps-private.h
+++ b/boilerplate/cairo-boilerplate-ps-private.h
@@ -30,10 +30,10 @@
 cairo_surface_t *
 _cairo_boilerplate_ps2_create_surface (const char		 *name,
 				       cairo_content_t		  content,
-				       int			  width,
-				       int			  height,
-				       int			  max_width,
-				       int			  max_height,
+				       double			  width,
+				       double			  height,
+				       double			  max_width,
+				       double			  max_height,
 				       cairo_boilerplate_mode_t	  mode,
 				       int                        id,
 				       void			**closure);
@@ -41,10 +41,10 @@ _cairo_boilerplate_ps2_create_surface (const char		 *name,
 cairo_surface_t *
 _cairo_boilerplate_ps3_create_surface (const char		 *name,
 				       cairo_content_t		  content,
-				       int			  width,
-				       int			  height,
-				       int			  max_width,
-				       int			  max_height,
+				       double			  width,
+				       double			  height,
+				       double			  max_width,
+				       double			  max_height,
 				       cairo_boilerplate_mode_t	  mode,
 				       int                        id,
 				       void			**closure);
diff --git a/boilerplate/cairo-boilerplate-ps.c b/boilerplate/cairo-boilerplate-ps.c
index c3efceab..2fb03e89 100644
--- a/boilerplate/cairo-boilerplate-ps.c
+++ b/boilerplate/cairo-boilerplate-ps.c
@@ -68,10 +68,10 @@ static cairo_surface_t *
 _cairo_boilerplate_ps_create_surface (const char		 *name,
 				      cairo_content_t		  content,
 				      cairo_ps_level_t		  level,
-				      int			  width,
-				      int			  height,
-				      int			  max_width,
-				      int			  max_height,
+				      double			  width,
+				      double			  height,
+				      double			  max_width,
+				      double			  max_height,
 				      cairo_boilerplate_mode_t	  mode,
 				      int                         id,
 				      void			**closure)
@@ -90,8 +90,8 @@ _cairo_boilerplate_ps_create_surface (const char		 *name,
     xunlink (ptc->filename);
 
     ptc->level = level;
-    ptc->width = width;
-    ptc->height = height;
+    ptc->width = ceil (width);
+    ptc->height = ceil (height);
 
     surface = cairo_ps_surface_create (ptc->filename, width, height);
     if (cairo_surface_status (surface))
@@ -105,7 +105,7 @@ _cairo_boilerplate_ps_create_surface (const char		 *name,
 	ptc->target = surface;
 	surface = cairo_surface_create_similar (ptc->target,
 						CAIRO_CONTENT_COLOR,
-						width, height);
+						ptc->width, ptc->height);
 	if (cairo_surface_status (surface))
 	    goto CLEANUP_TARGET;
     } else {
@@ -130,10 +130,10 @@ _cairo_boilerplate_ps_create_surface (const char		 *name,
 cairo_surface_t *
 _cairo_boilerplate_ps2_create_surface (const char		 *name,
 				       cairo_content_t		  content,
-				       int			  width,
-				       int			  height,
-				       int			  max_width,
-				       int			  max_height,
+				       double			  width,
+				       double			  height,
+				       double			  max_width,
+				       double			  max_height,
 				       cairo_boilerplate_mode_t	  mode,
 				       int                        id,
 				       void			**closure)
@@ -149,10 +149,10 @@ _cairo_boilerplate_ps2_create_surface (const char		 *name,
 cairo_surface_t *
 _cairo_boilerplate_ps3_create_surface (const char		 *name,
 				       cairo_content_t		  content,
-				       int			  width,
-				       int			  height,
-				       int			  max_width,
-				       int			  max_height,
+				       double			  width,
+				       double			  height,
+				       double			  max_width,
+				       double			  max_height,
 				       cairo_boilerplate_mode_t	  mode,
 				       int                        id,
 				       void			**closure)
diff --git a/boilerplate/cairo-boilerplate-qt-private.h b/boilerplate/cairo-boilerplate-qt-private.h
index 4ac87642..917d63b4 100644
--- a/boilerplate/cairo-boilerplate-qt-private.h
+++ b/boilerplate/cairo-boilerplate-qt-private.h
@@ -39,11 +39,11 @@ CAIRO_BEGIN_DECLS
 
 extern cairo_surface_t *
 _cairo_boilerplate_qt_create_surface (const char			 *name,
-				      cairo_content_t		  content,
-				      int				  width,
-				      int				  height,
-				      int				  max_width,
-				      int				  max_height,
+				      cairo_content_t			  content,
+				      double				  width,
+				      double				  height,
+				      double				  max_width,
+				      double				  max_height,
 				      cairo_boilerplate_mode_t	  mode,
 				      int                           id,
 				      void			**closure);
diff --git a/boilerplate/cairo-boilerplate-qt.cpp b/boilerplate/cairo-boilerplate-qt.cpp
index 0e0aa7db..addcb12e 100644
--- a/boilerplate/cairo-boilerplate-qt.cpp
+++ b/boilerplate/cairo-boilerplate-qt.cpp
@@ -56,10 +56,10 @@ _cairo_boilerplate_qt_cleanup (void *closure)
 cairo_surface_t *
 _cairo_boilerplate_qt_create_surface (const char		 *name,
 				      cairo_content_t		  content,
-				      int			  width,
-				      int			  height,
-				      int			  max_width,
-				      int			  max_height,
+				      double			  width,
+				      double			  height,
+				      double			  max_width,
+				      double			  max_height,
 				      cairo_boilerplate_mode_t	  mode,
 				      int			  id,
 				      void			**closure)
diff --git a/boilerplate/cairo-boilerplate-quartz-private.h b/boilerplate/cairo-boilerplate-quartz-private.h
index 573e247e..ccf8a9ac 100644
--- a/boilerplate/cairo-boilerplate-quartz-private.h
+++ b/boilerplate/cairo-boilerplate-quartz-private.h
@@ -30,10 +30,10 @@
 cairo_surface_t *
 _cairo_boilerplate_quartz_create_surface (const char		   *name,
 					  cairo_content_t	    content,
-					  int			    width,
-					  int			    height,
-					  int			    max_width,
-					  int			    max_height,
+					  double			    width,
+					  double			    height,
+					  double			    max_width,
+					  double			    max_height,
 					  cairo_boilerplate_mode_t  mode,
 					  int                       id,
 					  void			  **closure);
diff --git a/boilerplate/cairo-boilerplate-quartz.c b/boilerplate/cairo-boilerplate-quartz.c
index 30652131..0b5b49d5 100644
--- a/boilerplate/cairo-boilerplate-quartz.c
+++ b/boilerplate/cairo-boilerplate-quartz.c
@@ -32,10 +32,10 @@
 cairo_surface_t *
 _cairo_boilerplate_quartz_create_surface (const char			 *name,
 					  cairo_content_t		  content,
-					  int				  width,
-					  int				  height,
-					  int				  max_width,
-					  int				  max_height,
+					  double				  width,
+					  double				  height,
+					  double				  max_width,
+					  double				  max_height,
 					  cairo_boilerplate_mode_t	  mode,
 					  int                             id,
 					  void				**closure)
diff --git a/boilerplate/cairo-boilerplate-script-private.h b/boilerplate/cairo-boilerplate-script-private.h
index 480e4221..ad01d629 100644
--- a/boilerplate/cairo-boilerplate-script-private.h
+++ b/boilerplate/cairo-boilerplate-script-private.h
@@ -30,10 +30,10 @@
 cairo_surface_t *
 _cairo_boilerplate_script_create_surface (const char		 *name,
 				       cairo_content_t		  content,
-				       int			  width,
-				       int			  height,
-				       int			  max_width,
-				       int			  max_height,
+				       double			  width,
+				       double			  height,
+				       double			  max_width,
+				       double			  max_height,
 				       cairo_boilerplate_mode_t	  mode,
 				       int                        id,
 				       void			**closure);
diff --git a/boilerplate/cairo-boilerplate-script.c b/boilerplate/cairo-boilerplate-script.c
index ae08cbc5..3d78078c 100644
--- a/boilerplate/cairo-boilerplate-script.c
+++ b/boilerplate/cairo-boilerplate-script.c
@@ -33,17 +33,17 @@ cairo_user_data_key_t script_closure_key;
 
 typedef struct _script_target_closure {
     char		*filename;
-    int			 width;
-    int			 height;
+    double		 width;
+    double		 height;
 } script_target_closure_t;
 
 cairo_surface_t *
 _cairo_boilerplate_script_create_surface (const char		 *name,
 					  cairo_content_t	  content,
-					  int			  width,
-					  int			  height,
-					  int			  max_width,
-					  int			  max_height,
+					  double			  width,
+					  double			  height,
+					  double			  max_width,
+					  double			  max_height,
 					  cairo_boilerplate_mode_t	  mode,
 					  int                        id,
 					  void			**closure)
diff --git a/boilerplate/cairo-boilerplate-svg-private.h b/boilerplate/cairo-boilerplate-svg-private.h
index d8c0a8fb..5a64eaf0 100644
--- a/boilerplate/cairo-boilerplate-svg-private.h
+++ b/boilerplate/cairo-boilerplate-svg-private.h
@@ -30,10 +30,10 @@
 cairo_surface_t *
 _cairo_boilerplate_svg11_create_surface (const char		 *name,
 					 cairo_content_t          content,
-					 int			  width,
-					 int			  height,
-					 int			  max_width,
-					 int			  max_height,
+					 double			  width,
+					 double			  height,
+					 double			  max_width,
+					 double			  max_height,
 					 cairo_boilerplate_mode_t mode,
 					 int                      id,
 					 void			**closure);
@@ -41,10 +41,10 @@ _cairo_boilerplate_svg11_create_surface (const char		 *name,
 cairo_surface_t *
 _cairo_boilerplate_svg12_create_surface (const char		 *name,
 					 cairo_content_t	  content,
-					 int			  width,
-					 int			  height,
-					 int			  max_width,
-					 int			  max_height,
+					 double			  width,
+					 double			  height,
+					 double			  max_width,
+					 double			  max_height,
 					 cairo_boilerplate_mode_t mode,
 					 int                      id,
 					 void			**closure);
diff --git a/boilerplate/cairo-boilerplate-svg.c b/boilerplate/cairo-boilerplate-svg.c
index e6c1355f..407214c7 100644
--- a/boilerplate/cairo-boilerplate-svg.c
+++ b/boilerplate/cairo-boilerplate-svg.c
@@ -48,10 +48,10 @@ static cairo_surface_t *
 _cairo_boilerplate_svg_create_surface (const char		 *name,
 				       cairo_content_t		  content,
 				       cairo_svg_version_t	  version,
-				       int			  width,
-				       int			  height,
-				       int			  max_width,
-				       int			  max_height,
+				       double			  width,
+				       double			  height,
+				       double			  max_width,
+				       double			  max_height,
 				       cairo_boilerplate_mode_t	  mode,
 				       int                        id,
 				       void			**closure)
@@ -62,8 +62,8 @@ _cairo_boilerplate_svg_create_surface (const char		 *name,
 
     *closure = ptc = xmalloc (sizeof (svg_target_closure_t));
 
-    ptc->width = width;
-    ptc->height = height;
+    ptc->width = ceil (width);
+    ptc->height = ceil (height);
 
     xasprintf (&ptc->filename, "%s.out.svg", name);
     xunlink (ptc->filename);
@@ -79,7 +79,7 @@ _cairo_boilerplate_svg_create_surface (const char		 *name,
 	ptc->target = surface;
 	surface = cairo_surface_create_similar (ptc->target,
 						CAIRO_CONTENT_COLOR,
-						width, height);
+						ptc->width, ptc->height);
 	if (cairo_surface_status (surface))
 	    goto CLEANUP_TARGET;
     } else
@@ -103,10 +103,10 @@ _cairo_boilerplate_svg_create_surface (const char		 *name,
 cairo_surface_t *
 _cairo_boilerplate_svg11_create_surface (const char		 *name,
 					 cairo_content_t	  content,
-					 int			  width,
-					 int			  height,
-					 int			  max_width,
-					 int			  max_height,
+					 double			  width,
+					 double			  height,
+					 double			  max_width,
+					 double			  max_height,
 					 cairo_boilerplate_mode_t	  mode,
 					 int                        id,
 					 void			**closure)
@@ -123,10 +123,10 @@ _cairo_boilerplate_svg11_create_surface (const char		 *name,
 cairo_surface_t *
 _cairo_boilerplate_svg12_create_surface (const char		 *name,
 					 cairo_content_t	  content,
-					 int			  width,
-					 int			  height,
-					 int			  max_width,
-					 int			  max_height,
+					 double			  width,
+					 double			  height,
+					 double			  max_width,
+					 double			  max_height,
 					 cairo_boilerplate_mode_t	  mode,
 					 int                        id,
 					 void			**closure)
diff --git a/boilerplate/cairo-boilerplate-test-surfaces-private.h b/boilerplate/cairo-boilerplate-test-surfaces-private.h
index 55134fe5..57bf62dd 100644
--- a/boilerplate/cairo-boilerplate-test-surfaces-private.h
+++ b/boilerplate/cairo-boilerplate-test-surfaces-private.h
@@ -30,10 +30,10 @@
 cairo_surface_t *
 _cairo_boilerplate_test_fallback_create_surface (const char			 *name,
 						 cairo_content_t		  content,
-						 int				  width,
-						 int				  height,
-						 int				  max_width,
-						 int				  max_height,
+						 double				  width,
+						 double				  height,
+						 double				  max_width,
+						 double				  max_height,
 						 cairo_boilerplate_mode_t	  mode,
 						 int                              id,
 						 void				**closure);
@@ -41,10 +41,10 @@ _cairo_boilerplate_test_fallback_create_surface (const char			 *name,
 cairo_surface_t *
 _cairo_boilerplate_test_fallback16_create_surface (const char			 *name,
 						 cairo_content_t		  content,
-						 int				  width,
-						 int				  height,
-						 int				  max_width,
-						 int				  max_height,
+						 double				  width,
+						 double				  height,
+						 double				  max_width,
+						 double				  max_height,
 						 cairo_boilerplate_mode_t	  mode,
 						 int                              id,
 						 void				**closure);
@@ -53,10 +53,10 @@ _cairo_boilerplate_test_fallback16_create_surface (const char			 *name,
 cairo_surface_t *
 _cairo_boilerplate_test_meta_create_surface (const char			 *name,
 					     cairo_content_t		  content,
-					     int			  width,
-					     int			  height,
-					     int			  max_width,
-					     int			  max_height,
+					     double			  width,
+					     double			  height,
+					     double			  max_width,
+					     double			  max_height,
 					     cairo_boilerplate_mode_t	  mode,
 					     int                          id,
 					     void			**closure);
@@ -64,10 +64,10 @@ _cairo_boilerplate_test_meta_create_surface (const char			 *name,
 cairo_surface_t *
 _cairo_boilerplate_test_null_create_surface (const char			 *name,
 					     cairo_content_t		  content,
-					     int			  width,
-					     int			  height,
-					     int			  max_width,
-					     int			  max_height,
+					     double			  width,
+					     double			  height,
+					     double			  max_width,
+					     double			  max_height,
 					     cairo_boilerplate_mode_t	  mode,
 					     int                          id,
 					     void			**closure);
@@ -75,10 +75,10 @@ _cairo_boilerplate_test_null_create_surface (const char			 *name,
 cairo_surface_t *
 _cairo_boilerplate_test_paginated_create_surface (const char			 *name,
 						  cairo_content_t		  content,
-						  int				  width,
-						  int				  height,
-						  int				  max_width,
-						  int				  max_height,
+						  double				  width,
+						  double				  height,
+						  double				  max_width,
+						  double				  max_height,
 						  cairo_boilerplate_mode_t	  mode,
 						  int                             id,
 						  void				**closure);
diff --git a/boilerplate/cairo-boilerplate-test-surfaces.c b/boilerplate/cairo-boilerplate-test-surfaces.c
index 0fc92e3f..0fec3933 100644
--- a/boilerplate/cairo-boilerplate-test-surfaces.c
+++ b/boilerplate/cairo-boilerplate-test-surfaces.c
@@ -38,10 +38,10 @@
 cairo_surface_t *
 _cairo_boilerplate_test_fallback_create_surface (const char			 *name,
 						 cairo_content_t		  content,
-						 int				  width,
-						 int				  height,
-						 int				  max_width,
-						 int				  max_height,
+						 double				  width,
+						 double				  height,
+						 double				  max_width,
+						 double				  max_height,
 						 cairo_boilerplate_mode_t	  mode,
 						 int                              id,
 						 void				**closure)
@@ -53,10 +53,10 @@ _cairo_boilerplate_test_fallback_create_surface (const char			 *name,
 cairo_surface_t *
 _cairo_boilerplate_test_fallback16_create_surface (const char			 *name,
 						   cairo_content_t		  content,
-						   int				  width,
-						   int				  height,
-						   int				  max_width,
-						   int				  max_height,
+						   double				  width,
+						   double				  height,
+						   double				  max_width,
+						   double				  max_height,
 						   cairo_boilerplate_mode_t	  mode,
 						   int                              id,
 						   void				**closure)
@@ -68,10 +68,10 @@ _cairo_boilerplate_test_fallback16_create_surface (const char			 *name,
 cairo_surface_t *
 _cairo_boilerplate_test_meta_create_surface (const char			 *name,
 					     cairo_content_t		  content,
-					     int			  width,
-					     int			  height,
-					     int			  max_width,
-					     int			  max_height,
+					     double			  width,
+					     double			  height,
+					     double			  max_width,
+					     double			  max_height,
 					     cairo_boilerplate_mode_t	  mode,
 					     int                          id,
 					     void			**closure)
@@ -83,10 +83,10 @@ _cairo_boilerplate_test_meta_create_surface (const char			 *name,
 cairo_surface_t *
 _cairo_boilerplate_test_null_create_surface (const char			 *name,
 					     cairo_content_t		  content,
-					     int			  width,
-					     int			  height,
-					     int			  max_width,
-					     int			  max_height,
+					     double			  width,
+					     double			  height,
+					     double			  max_width,
+					     double			  max_height,
 					     cairo_boilerplate_mode_t	  mode,
 					     int                          id,
 					     void			**closure)
@@ -108,10 +108,10 @@ typedef struct {
 cairo_surface_t *
 _cairo_boilerplate_test_paginated_create_surface (const char			 *name,
 						  cairo_content_t		  content,
-						  int				  width,
-						  int				  height,
-						  int				  max_width,
-						  int				  max_height,
+						  double				  width,
+						  double				  height,
+						  double				  max_width,
+						  double				  max_height,
 						  cairo_boilerplate_mode_t	  mode,
 						  int                             id,
 						  void				**closure)
diff --git a/boilerplate/cairo-boilerplate-win32-printing.c b/boilerplate/cairo-boilerplate-win32-printing.c
index 13a65515..7a6dafc9 100644
--- a/boilerplate/cairo-boilerplate-win32-printing.c
+++ b/boilerplate/cairo-boilerplate-win32-printing.c
@@ -164,10 +164,10 @@ create_printer_dc (win32_target_closure_t *ptc)
 cairo_surface_t *
 _cairo_boilerplate_win32_printing_create_surface (const char              *name,
 						  cairo_content_t          content,
-						  int                      width,
-						  int                      height,
-						  int                      max_width,
-						  int                      max_height,
+						  double                      width,
+						  double                      height,
+						  double                      max_width,
+						  double                      max_height,
 						  cairo_boilerplate_mode_t mode,
 						  int                      id,
 						  void                   **closure)
diff --git a/boilerplate/cairo-boilerplate-win32-private.h b/boilerplate/cairo-boilerplate-win32-private.h
index fc039ae7..b09b9f7f 100644
--- a/boilerplate/cairo-boilerplate-win32-private.h
+++ b/boilerplate/cairo-boilerplate-win32-private.h
@@ -30,10 +30,10 @@
 cairo_surface_t *
 _cairo_boilerplate_win32_create_surface (const char			 *name,
 					 cairo_content_t		  content,
-					 int				  width,
-					 int				  height,
-					 int				  max_width,
-					 int				  max_height,
+					 double				  width,
+					 double				  height,
+					 double				  max_width,
+					 double				  max_height,
 					 cairo_boilerplate_mode_t	  mode,
 					 int                              id,
 					 void				**closure);
@@ -41,10 +41,10 @@ _cairo_boilerplate_win32_create_surface (const char			 *name,
 cairo_surface_t *
 _cairo_boilerplate_win32_printing_create_surface (const char		  *name,
 						  cairo_content_t	   content,
-						  int			   width,
-						  int			   height,
-						  int			   max_width,
-						  int			   max_height,
+						  double			   width,
+						  double			   height,
+						  double			   max_width,
+						  double			   max_height,
 						  cairo_boilerplate_mode_t mode,
 						  int			   id,
 						  void			 **closure);
diff --git a/boilerplate/cairo-boilerplate-win32.c b/boilerplate/cairo-boilerplate-win32.c
index 4b54a54e..83bc7c29 100644
--- a/boilerplate/cairo-boilerplate-win32.c
+++ b/boilerplate/cairo-boilerplate-win32.c
@@ -32,10 +32,10 @@
 cairo_surface_t *
 _cairo_boilerplate_win32_create_surface (const char			 *name,
 					 cairo_content_t		  content,
-					 int				  width,
-					 int				  height,
-					 int				  max_width,
-					 int				  max_height,
+					 double				  width,
+					 double				  height,
+					 double				  max_width,
+					 double				  max_height,
 					 cairo_boilerplate_mode_t	  mode,
 					 int                              id,
 					 void				**closure)
diff --git a/boilerplate/cairo-boilerplate-xcb-private.h b/boilerplate/cairo-boilerplate-xcb-private.h
index 998e6b9c..969b7614 100644
--- a/boilerplate/cairo-boilerplate-xcb-private.h
+++ b/boilerplate/cairo-boilerplate-xcb-private.h
@@ -30,10 +30,10 @@
 cairo_surface_t *
 _cairo_boilerplate_xcb_create_surface (const char		 *name,
 				       cairo_content_t		  content,
-				       int			  width,
-				       int			  height,
-				       int			  max_width,
-				       int			  max_height,
+				       double			  width,
+				       double			  height,
+				       double			  max_width,
+				       double			  max_height,
 				       cairo_boilerplate_mode_t	  mode,
 				       int                        id,
 				       void			**closure);
diff --git a/boilerplate/cairo-boilerplate-xcb.c b/boilerplate/cairo-boilerplate-xcb.c
index 306f874a..23e1b5ad 100644
--- a/boilerplate/cairo-boilerplate-xcb.c
+++ b/boilerplate/cairo-boilerplate-xcb.c
@@ -50,10 +50,10 @@ _cairo_boilerplate_xcb_synchronize (void *closure)
 cairo_surface_t *
 _cairo_boilerplate_xcb_create_surface (const char		 *name,
 				       cairo_content_t		  content,
-				       int			  width,
-				       int			  height,
-				       int			  max_width,
-				       int			  max_height,
+				       double			  width,
+				       double			  height,
+				       double			  max_width,
+				       double			  max_height,
 				       cairo_boilerplate_mode_t	  mode,
 				       int                        id,
 				       void			**closure)
diff --git a/boilerplate/cairo-boilerplate-xlib-private.h b/boilerplate/cairo-boilerplate-xlib-private.h
index 265ee97c..e4f24ce1 100644
--- a/boilerplate/cairo-boilerplate-xlib-private.h
+++ b/boilerplate/cairo-boilerplate-xlib-private.h
@@ -31,10 +31,10 @@
 cairo_surface_t *
 _cairo_boilerplate_xlib_create_surface (const char		  *name,
 					cairo_content_t		   content,
-					int			   width,
-					int			   height,
-					int			   max_width,
-					int			   max_height,
+					double			   width,
+					double			   height,
+					double			   max_width,
+					double			   max_height,
 					cairo_boilerplate_mode_t   mode,
 					int                        id,
 					void			 **closure);
@@ -43,10 +43,10 @@ _cairo_boilerplate_xlib_create_surface (const char		  *name,
 cairo_surface_t *
 _cairo_boilerplate_xlib_reference_create_surface (const char			 *name,
 						 cairo_content_t		  content,
-						 int				  width,
-						 int				  height,
-						 int				  max_width,
-						 int				  max_height,
+						 double				  width,
+						 double				  height,
+						 double				  max_width,
+						 double				  max_height,
 						 cairo_boilerplate_mode_t	  mode,
 						 int				  id,
 						 void				**closure);
@@ -54,10 +54,10 @@ _cairo_boilerplate_xlib_reference_create_surface (const char			 *name,
 cairo_surface_t *
 _cairo_boilerplate_xlib_fallback_create_surface (const char			 *name,
 						 cairo_content_t		  content,
-						 int				  width,
-						 int				  height,
-						 int				  max_width,
-						 int				  max_height,
+						 double				  width,
+						 double				  height,
+						 double				  max_width,
+						 double				  max_height,
 						 cairo_boilerplate_mode_t	  mode,
 						 int				  id,
 						 void				**closure);
diff --git a/boilerplate/cairo-boilerplate-xlib.c b/boilerplate/cairo-boilerplate-xlib.c
index 03febe90..f40f9271 100644
--- a/boilerplate/cairo-boilerplate-xlib.c
+++ b/boilerplate/cairo-boilerplate-xlib.c
@@ -188,10 +188,10 @@ _cairo_boilerplate_xlib_perf_create_surface (Display			*dpy,
 cairo_surface_t *
 _cairo_boilerplate_xlib_create_surface (const char			 *name,
 					cairo_content_t			  content,
-					int				  width,
-					int				  height,
-					int				  max_width,
-					int				  max_height,
+					double				  width,
+					double				  height,
+					double				  max_width,
+					double				  max_height,
 					cairo_boilerplate_mode_t	  mode,
 					int                               id,
 					void				**closure)
@@ -202,9 +202,12 @@ _cairo_boilerplate_xlib_create_surface (const char			 *name,
 
     *closure = xtc = xcalloc (1, sizeof (xlib_target_closure_t));
 
-    if (width == 0)
+    width = ceil (width);
+    if (width < 1)
 	width = 1;
-    if (height == 0)
+
+    height = ceil (height);
+    if (height < 1)
 	height = 1;
 
     xtc->dpy = dpy = XOpenDisplay (NULL);
@@ -228,10 +231,10 @@ _cairo_boilerplate_xlib_create_surface (const char			 *name,
 cairo_surface_t *
 _cairo_boilerplate_xlib_reference_create_surface (const char			 *name,
 						  cairo_content_t			  content,
-						  int				  width,
-						  int				  height,
-						  int				  max_width,
-						  int				  max_height,
+						  double				  width,
+						  double				  height,
+						  double				  max_width,
+						  double				  max_height,
 						  cairo_boilerplate_mode_t	  mode,
 						  int                               id,
 						  void				**closure)
@@ -253,9 +256,12 @@ _cairo_boilerplate_xlib_reference_create_surface (const char			 *name,
 
     *closure = xtc = xcalloc (1, sizeof (xlib_target_closure_t));
 
-    if (width == 0)
+    width = ceil (width);
+    if (width < 1)
 	width = 1;
-    if (height == 0)
+
+    height = ceil (height);
+    if (height < 1)
 	height = 1;
 
     xtc->dpy = dpy = XOpenDisplay (display);
@@ -289,10 +295,10 @@ _cairo_boilerplate_xlib_reference_create_surface (const char			 *name,
 cairo_surface_t *
 _cairo_boilerplate_xlib_fallback_create_surface (const char			 *name,
 						 cairo_content_t		  content,
-						 int				  width,
-						 int				  height,
-						 int				  max_width,
-						 int				  max_height,
+						 double				  width,
+						 double				  height,
+						 double				  max_width,
+						 double				  max_height,
 						 cairo_boilerplate_mode_t	  mode,
 						 int				  id,
 						 void				**closure)
@@ -316,9 +322,12 @@ _cairo_boilerplate_xlib_fallback_create_surface (const char			 *name,
 
     *closure = xtc = xmalloc (sizeof (xlib_target_closure_t));
 
-    if (width == 0)
+    width = ceil (width);
+    if (width < 1)
 	width = 1;
-    if (height == 0)
+
+    height = ceil (height);
+    if (height < 1)
 	height = 1;
 
     xtc->dpy = dpy = XOpenDisplay (NULL);
diff --git a/boilerplate/cairo-boilerplate.c b/boilerplate/cairo-boilerplate.c
index 39a1a4a9..0ab45ee0 100644
--- a/boilerplate/cairo-boilerplate.c
+++ b/boilerplate/cairo-boilerplate.c
@@ -141,10 +141,10 @@ cairo_boilerplate_format_from_content (cairo_content_t content)
 static cairo_surface_t *
 _cairo_boilerplate_image_create_surface (const char			 *name,
 					 cairo_content_t		  content,
-					 int				  width,
-					 int				  height,
-					 int				  max_width,
-					 int				  max_height,
+					 double				  width,
+					 double				  height,
+					 double				  max_width,
+					 double				  max_height,
 					 cairo_boilerplate_mode_t	  mode,
 					 int                              id,
 					 void				**closure)
@@ -162,7 +162,7 @@ _cairo_boilerplate_image_create_surface (const char			 *name,
 	return NULL;
     }
 
-    return cairo_image_surface_create (format, width, height);
+    return cairo_image_surface_create (format, ceil (width), ceil (height));
 }
 
 cairo_surface_t *
diff --git a/boilerplate/cairo-boilerplate.h b/boilerplate/cairo-boilerplate.h
index 99dc5ceb..626ee2eb 100644
--- a/boilerplate/cairo-boilerplate.h
+++ b/boilerplate/cairo-boilerplate.h
@@ -116,10 +116,10 @@ typedef enum {
 typedef cairo_surface_t *
 (*cairo_boilerplate_create_surface_t) (const char		 *name,
 				       cairo_content_t		  content,
-				       int			  width,
-				       int			  height,
-				       int			  max_width,
-				       int			  max_height,
+				       double			  width,
+				       double			  height,
+				       double			  max_width,
+				       double			  max_height,
 				       cairo_boilerplate_mode_t	  mode,
 				       int                        id,
 				       void			**closure);
diff --git a/test/Makefile.am b/test/Makefile.am
index 8df6c8eb..82417c43 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -502,6 +502,13 @@ REFERENCE_IMAGES = \
 	gradient-zero-stops.rgb24.ref.png \
 	group-clip.ref.png \
 	group-paint.ref.png \
+	group-unaligned.ref.png \
+	group-unaligned.pdf.ref.png \
+	group-unaligned.ps.ref.png \
+	group-unaligned.svg.argb32.ref.png \
+	group-unaligned.svg.rgb24.ref.png \
+	group-unaligned.xlib.ref.png \
+	group-unaligned.xlib-fallback.ref.png \
 	huge-linear.ps3.ref.png \
 	huge-linear.ref.png \
 	huge-radial.ps3.ref.png \
diff --git a/test/Makefile.sources b/test/Makefile.sources
index 64c6d043..e37b3e81 100644
--- a/test/Makefile.sources
+++ b/test/Makefile.sources
@@ -81,6 +81,7 @@ test_sources = \
 	gradient-zero-stops.c				\
 	group-clip.c					\
 	group-paint.c					\
+	group-unaligned.c				\
 	huge-linear.c					\
 	huge-radial.c					\
 	image-surface-source.c				\
diff --git a/test/cairo-test.c b/test/cairo-test.c
index 715210f9..45b644b5 100644
--- a/test/cairo-test.c
+++ b/test/cairo-test.c
@@ -663,7 +663,7 @@ cairo_test_for_target (cairo_test_context_t		 *ctx,
     cairo_bool_t have_output = FALSE;
     cairo_bool_t have_result = FALSE;
     void *closure;
-    int width, height;
+    double width, height;
     cairo_bool_t have_output_dir;
 #if HAVE_MEMFAULT
     int malloc_failure_iterations = ctx->malloc_failure;
diff --git a/test/cairo-test.h b/test/cairo-test.h
index b16f340c..d644d96b 100644
--- a/test/cairo-test.h
+++ b/test/cairo-test.h
@@ -101,8 +101,8 @@ struct _cairo_test {
     const char *description;
     const char *keywords;
     const char *requirements;
-    int width;
-    int height;
+    double width;
+    double height;
     cairo_test_preamble_function_t *preamble;
     cairo_test_draw_function_t *draw;
 };
diff --git a/test/group-unaligned.c b/test/group-unaligned.c
new file mode 100644
index 00000000..9124a032
--- /dev/null
+++ b/test/group-unaligned.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright © Chris Wilson, 2008
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Chris Wilson not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Red Hat, Inc. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors: Chris Wilson <chris@chris-wilson.co.uk>
+ *          Stefan Röllin <stefan.roellin@gmx.ch>
+ */
+
+#include "cairo-test.h"
+
+static void
+circle (cairo_t* cr, double xc, double yc, double radius)
+{
+    cairo_arc (cr, xc, yc, radius, 0.0, 2*M_PI);
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_set_source_rgb (cr, 1, 1, 1);
+    cairo_paint (cr);
+
+    cairo_set_source_rgb (cr, 1, 0, 0);
+    circle (cr, 12.5, 12.5, 10.);
+    cairo_fill (cr);
+
+    cairo_push_group (cr);
+    cairo_set_source_rgb (cr, 0, 0, 1);
+    circle (cr, 12.5, 12.5, 10.);
+    cairo_fill (cr);
+    cairo_pop_group_to_source (cr);
+    cairo_paint (cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (group_unaligned,
+	    "test non-integer sized sub-surface",
+	    "group", /* keywords */
+	    NULL, /* requirements */
+	    35.5, 35.5,
+	    NULL, draw)
diff --git a/test/group-unaligned.pdf.ref.png b/test/group-unaligned.pdf.ref.png
new file mode 100644
index 00000000..0eb39c0e
--- /dev/null
+++ b/test/group-unaligned.pdf.ref.png
diff --git a/test/group-unaligned.ps.ref.png b/test/group-unaligned.ps.ref.png
new file mode 100644
index 00000000..79525ac5
--- /dev/null
+++ b/test/group-unaligned.ps.ref.png
diff --git a/test/group-unaligned.svg.argb32.ref.png b/test/group-unaligned.svg.argb32.ref.png
new file mode 100644
index 00000000..91535f97
--- /dev/null
+++ b/test/group-unaligned.svg.argb32.ref.png
diff --git a/test/group-unaligned.svg.rgb24.ref.png b/test/group-unaligned.svg.rgb24.ref.png
new file mode 100644
index 00000000..42558a6e
--- /dev/null
+++ b/test/group-unaligned.svg.rgb24.ref.png
diff --git a/test/group-unaligned.xlib-fallback.ref.png b/test/group-unaligned.xlib-fallback.ref.png
new file mode 100644
index 00000000..ed615b22
--- /dev/null
+++ b/test/group-unaligned.xlib-fallback.ref.png
diff --git a/test/group-unaligned.xlib.ref.png b/test/group-unaligned.xlib.ref.png
new file mode 100644
index 00000000..c62aa5af
--- /dev/null
+++ b/test/group-unaligned.xlib.ref.png