[cairo-commit] 3 commits - configure.in src/cairo-pdf-surface.c test/.gitignore test/Makefile.am test/smask.c test/smask-fill.c test/smask-fill-ref.png test/smask-image-mask.c test/smask-image-mask-ref.png test/smask-mask.c test/smask-mask-ref.png test/smask-paint.c test/smask-paint-ref.png test/smask-ref.png test/smask-stroke.c test/smask-stroke-ref.png test/smask-text.c test/smask-text-ref.png

Chris Wilson ickle at kemper.freedesktop.org
Fri Apr 4 06:57:52 PDT 2008


 configure.in                  |   15 ++--
 src/cairo-pdf-surface.c       |    9 ++
 test/.gitignore               |    7 ++
 test/Makefile.am              |   14 ++++
 test/smask-fill-ref.png       |binary
 test/smask-fill.c             |   83 ++++++++++++++++++++++++++
 test/smask-image-mask-ref.png |binary
 test/smask-image-mask.c       |   92 +++++++++++++++++++++++++++++
 test/smask-mask-ref.png       |binary
 test/smask-mask.c             |  107 ++++++++++++++++++++++++++++++++++
 test/smask-paint-ref.png      |binary
 test/smask-paint.c            |   90 +++++++++++++++++++++++++++++
 test/smask-ref.png            |binary
 test/smask-stroke-ref.png     |binary
 test/smask-stroke.c           |   83 ++++++++++++++++++++++++++
 test/smask-text-ref.png       |binary
 test/smask-text.c             |   92 +++++++++++++++++++++++++++++
 test/smask.c                  |  130 ++++++++++++++++++++++++++++++++++++++++++
 18 files changed, 714 insertions(+), 8 deletions(-)

New commits:
commit f72799a2520feb7ed04fd14e53db59fe697a58d1
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Apr 4 14:15:58 2008 +0100

    [configure.in] Add a link to the LTP homepage.
    
    If ./configure --enable-gcov fails due to a missing LTP package, then
    include a link to LTP homepage in the error message.

diff --git a/configure.in b/configure.in
index 89cdd3c..97bee95 100644
--- a/configure.in
+++ b/configure.in
@@ -902,23 +902,24 @@ if test "x$use_gcov" = "xyes"; then
         fi
       done
     ])
-  else
-    ltp_msg="To enable code coverage reporting you must have one of the following LTP versions installed: $ltp_version_list"
-    AC_MSG_ERROR([$ltp_msg])
   fi
 
   case $cairo_cv_ltp_version in
     ""|invalid[)]
-      ltp_msg="You must have one of the following versions of LTP: $ltp_version_list (found: $ltp_version)."
-      AC_MSG_ERROR([$ltp_msg])
-      LTP="exit 0;"
       ;;
     *)
       cairo_has_lcov=yes
+      ;;
   esac
 
+  if test "x$cairo_has_lcov" != "xyes"; then
+    AC_MSG_ERROR([[To enable code coverage reporting you must have one of the following LTP versions installed: $ltp_version_list.
+Please install the Linux Test Project [http://ltp.sourceforge.net/], and try again.]])
+   fi
+
   if test -z "$LTP_GENHTML"; then
-    AC_MSG_ERROR([Could not find genhtml from the LTP package])
+    AC_MSG_ERROR([[Could not find genhtml from the LTP package.
+Please install the Linux Test Project [http://ltp.sourceforge.net/], and try again.]])
   fi
 
   AC_DEFINE(HAVE_GCOV, 1, [Whether you have gcov])
commit c0593d16c7f2ca9c1ba4d05b6cbf3cf9c2f0524b
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Apr 4 12:53:13 2008 +0100

    [pdf] Copy the glyphs for use within an smask group.
    
    When constructing an smask group using PDF_SHOW_GLYPHS, we need a copy
    of the glyphs else they'll be freed be we use them (in _show_page()).

diff --git a/src/cairo-pdf-surface.c b/src/cairo-pdf-surface.c
index ce6d8c4..862e941 100644
--- a/src/cairo-pdf-surface.c
+++ b/src/cairo-pdf-surface.c
@@ -731,6 +731,8 @@ _cairo_pdf_smask_group_destroy (cairo_pdf_smask_group_t *group)
 	cairo_pattern_destroy (group->source);
     if (group->mask)
 	cairo_pattern_destroy (group->mask);
+    if (group->glyphs)
+	free (group->glyphs);
     if (group->scaled_font)
 	cairo_scaled_font_destroy (group->scaled_font);
     free (group);
@@ -4627,7 +4629,12 @@ _cairo_pdf_surface_show_glyphs (void			*abstract_surface,
 	group->operation = PDF_SHOW_GLYPHS;
 	group->source = cairo_pattern_reference (source);
 	group->source_res = pattern_res;
-	group->glyphs = glyphs;
+	group->glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
+	if (group->glyphs == NULL) {
+	    _cairo_pdf_smask_group_destroy (group);
+	    return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+	}
+	memcpy (group->glyphs, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
 	group->num_glyphs = num_glyphs;
 	group->scaled_font = cairo_scaled_font_reference (scaled_font);
 	status = _cairo_pdf_surface_add_smask_group (surface, group);
commit a74db7e7bc092533d244123ea2ae272edf3f5d8f
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Apr 4 12:34:40 2008 +0100

    [test] Exercise "soft" masks.
    
    PDF has a concept of "soft" masks, for which it is able to construct a
    mask out of PDF drawing operations. These tests exercise constructing
    various masks using the high level drawing operations.

diff --git a/test/.gitignore b/test/.gitignore
index 268afca..689ecf0 100644
--- a/test/.gitignore
+++ b/test/.gitignore
@@ -162,6 +162,13 @@ set-source
 show-glyphs-many
 show-text-current-point
 skew-extreme
+smask
+smask-fill
+smask-image-mask
+smask-mask
+smask-paint
+smask-stroke
+smask-text
 solid-pattern-cache-stress
 source-clip
 source-clip-scale
diff --git a/test/Makefile.am b/test/Makefile.am
index 2dce231..b73df23 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -120,6 +120,13 @@ self-intersecting$(EXEEXT)				\
 set-source$(EXEEXT)					\
 show-text-current-point$(EXEEXT)			\
 skew-extreme$(EXEEXT)					\
+smask$(EXEEXT)						\
+smask-fill$(EXEEXT)					\
+smask-image-mask$(EXEEXT)				\
+smask-mask$(EXEEXT)					\
+smask-paint$(EXEEXT)					\
+smask-stroke$(EXEEXT)					\
+smask-text$(EXEEXT)					\
 solid-pattern-cache-stress$(EXEEXT)			\
 source-clip$(EXEEXT)					\
 source-clip-scale$(EXEEXT)				\
@@ -579,6 +586,13 @@ REFERENCE_IMAGES = \
 	show-text-current-point-quartz-ref.png \
 	skew-extreme-ref.png \
 	skew-extreme-ps-ref.png \
+	smask-ref.png			\
+	smask-fill-ref.png		\
+	smask-image-mask-ref.png	\
+	smask-mask-ref.png		\
+	smask-paint-ref.png		\
+	smask-stroke-ref.png		\
+	smask-text-ref.png		\
 	stroke-image-ref.png \
 	stroke-image-pdf-ref.png \
 	stroke-image-ps-ref.png \
diff --git a/test/smask-fill-ref.png b/test/smask-fill-ref.png
new file mode 100644
index 0000000..c778a79
Binary files /dev/null and b/test/smask-fill-ref.png differ
diff --git a/test/smask-fill.c b/test/smask-fill.c
new file mode 100644
index 0000000..980018e
--- /dev/null
+++ b/test/smask-fill.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright © 2008 Chris Wilson
+ *
+ * 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. Chris Wilson 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.
+ *
+ * Author: Chris Wilson <chris at chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+    "smask-fill",
+    "Test the support of \"soft\" masks with fills",
+    60, 60,
+    draw
+};
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *mask;
+    cairo_pattern_t *pattern;
+    cairo_t *cr2;
+
+    mask = cairo_surface_create_similar (cairo_get_group_target (cr),
+				         CAIRO_CONTENT_ALPHA,
+					 width, height);
+    cr2 = cairo_create (mask);
+
+    cairo_save (cr2); {
+	cairo_set_operator (cr2, CAIRO_OPERATOR_CLEAR);
+	cairo_paint (cr2);
+    } cairo_restore (cr2);
+
+    pattern = cairo_pattern_create_linear (0, 0, width, height);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 1., 1., .5);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.75, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 0., 0., 0., 0.);
+    cairo_set_source (cr2, pattern);
+    cairo_pattern_destroy (pattern);
+
+    cairo_arc (cr2, 0.5 * width, 0.5 * height, 0.45 * height, 0, 2 * M_PI);
+    cairo_fill (cr2);
+    cairo_destroy (cr2);
+
+
+    cairo_set_source_rgb (cr, 0, 0, 1.0);
+    cairo_paint (cr);
+
+    cairo_set_source_rgb (cr, 1.0, 0, 0);
+    cairo_mask_surface (cr, mask, 0, 0);
+    cairo_surface_destroy (mask);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test);
+}
+
diff --git a/test/smask-image-mask-ref.png b/test/smask-image-mask-ref.png
new file mode 100644
index 0000000..858b209
Binary files /dev/null and b/test/smask-image-mask-ref.png differ
diff --git a/test/smask-image-mask.c b/test/smask-image-mask.c
new file mode 100644
index 0000000..5c805e1
--- /dev/null
+++ b/test/smask-image-mask.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright © 2008 Chris Wilson
+ *
+ * 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. Chris Wilson 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.
+ *
+ * Author: Chris Wilson <chris at chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+    "smask-image-mask",
+    "Test the support of \"soft\" masks with a secondary image mask",
+    60, 60,
+    draw
+};
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    static uint32_t data[] = {
+	0xaa000000, 0x55000000,
+	0x55000000, 0xaa000000,
+    };
+
+    cairo_surface_t *mask, *mask2;
+    cairo_pattern_t *pattern;
+    cairo_t *cr2;
+
+    mask = cairo_surface_create_similar (cairo_get_group_target (cr),
+				         CAIRO_CONTENT_ALPHA,
+					 width, height);
+    cr2 = cairo_create (mask);
+
+    cairo_save (cr2); {
+	cairo_set_operator (cr2, CAIRO_OPERATOR_CLEAR);
+	cairo_paint (cr2);
+    } cairo_restore (cr2);
+
+    pattern = cairo_pattern_create_linear (0, 0, width, height);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 1., 1., .5);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.75, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 0., 0., 0., 0.);
+    cairo_set_source (cr2, pattern);
+    cairo_pattern_destroy (pattern);
+
+    mask2 = cairo_image_surface_create_for_data ((unsigned char *) data,
+						CAIRO_FORMAT_ARGB32, 2, 2, 8);
+    pattern = cairo_pattern_create_for_surface (mask2);
+    cairo_surface_destroy (mask2);
+    cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
+    cairo_mask (cr2, pattern);
+    cairo_pattern_destroy (pattern);
+    cairo_destroy (cr2);
+
+    cairo_set_source_rgb (cr, 0, 0, 1.0);
+    cairo_paint (cr);
+
+    cairo_set_source_rgb (cr, 1.0, 0, 0);
+    cairo_mask_surface (cr, mask, 0, 0);
+    cairo_surface_destroy (mask);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test);
+}
+
diff --git a/test/smask-mask-ref.png b/test/smask-mask-ref.png
new file mode 100644
index 0000000..eabd2d6
Binary files /dev/null and b/test/smask-mask-ref.png differ
diff --git a/test/smask-mask.c b/test/smask-mask.c
new file mode 100644
index 0000000..3d8cb05
--- /dev/null
+++ b/test/smask-mask.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright © 2008 Chris Wilson
+ *
+ * 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. Chris Wilson 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.
+ *
+ * Author: Chris Wilson <chris at chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+    "smask-mask",
+    "Test the support of \"soft\" masks with a secondary mask",
+    60, 60,
+    draw
+};
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *mask, *mask2;
+    cairo_pattern_t *pattern;
+    cairo_t *cr2;
+
+    mask = cairo_surface_create_similar (cairo_get_group_target (cr),
+				         CAIRO_CONTENT_ALPHA,
+					 width, height);
+
+    mask2 = cairo_surface_create_similar (mask,
+				          CAIRO_CONTENT_ALPHA,
+					  width, height);
+    cr2 = cairo_create (mask2);
+
+    cairo_save (cr2); {
+	cairo_set_operator (cr2, CAIRO_OPERATOR_CLEAR);
+	cairo_paint (cr2);
+    } cairo_restore (cr2);
+
+    pattern = cairo_pattern_create_linear (0, 0, width, height);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 1., 1., .5);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.75, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 0., 0., 0., 0.);
+    cairo_set_source (cr2, pattern);
+    cairo_pattern_destroy (pattern);
+    cairo_paint (cr2);
+    cairo_destroy (cr2);
+
+
+    cr2 = cairo_create (mask);
+
+    cairo_save (cr2); {
+	cairo_set_operator (cr2, CAIRO_OPERATOR_CLEAR);
+	cairo_paint (cr2);
+    } cairo_restore (cr2);
+
+    pattern = cairo_pattern_create_radial (
+	    0.5 * width, 0.5 * height, 0,
+	    0.5 * width, 0.5 * height, 0.5 *height);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 1., 1., .5);
+    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 1., 1., 1., 1.);
+    cairo_set_source (cr2, pattern);
+    cairo_pattern_destroy (pattern);
+
+    cairo_mask_surface (cr2, mask2, 0, 0);
+    cairo_surface_destroy (mask2);
+    cairo_destroy (cr2);
+
+
+    cairo_set_source_rgb (cr, 0, 0, 1.0);
+    cairo_paint (cr);
+
+    cairo_set_source_rgb (cr, 1.0, 0, 0);
+    cairo_mask_surface (cr, mask, 0, 0);
+    cairo_surface_destroy (mask);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test);
+}
+
diff --git a/test/smask-paint-ref.png b/test/smask-paint-ref.png
new file mode 100644
index 0000000..4381209
Binary files /dev/null and b/test/smask-paint-ref.png differ
diff --git a/test/smask-paint.c b/test/smask-paint.c
new file mode 100644
index 0000000..c075ade
--- /dev/null
+++ b/test/smask-paint.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright © 2008 Chris Wilson
+ *
+ * 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. Chris Wilson 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.
+ *
+ * Author: Chris Wilson <chris at chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+    "smask-paint",
+    "Test the support of \"soft\" masks with paints",
+    60, 60,
+    draw
+};
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *mask;
+    cairo_pattern_t *pattern;
+    cairo_t *cr2;
+
+    mask = cairo_surface_create_similar (cairo_get_group_target (cr),
+				         CAIRO_CONTENT_ALPHA,
+					 width, height);
+    cr2 = cairo_create (mask);
+
+    cairo_save (cr2); {
+	cairo_set_operator (cr2, CAIRO_OPERATOR_CLEAR);
+	cairo_paint (cr2);
+    } cairo_restore (cr2);
+
+    pattern = cairo_pattern_create_linear (0, 0, width, height);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 1., 1., .5);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.75, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 0., 0., 0., 0.);
+    cairo_set_source (cr2, pattern);
+    cairo_pattern_destroy (pattern);
+
+    cairo_paint (cr2);
+    cairo_destroy (cr2);
+
+    cairo_set_source_rgb (cr, 0, 0, 1.0);
+    cairo_paint (cr);
+
+    pattern = cairo_pattern_create_radial (
+	    0.5 * width, 0.5 * height, 0,
+	    0.5 * width, 0.5 * height, 0.5 *height);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 0., 0., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 0., 0., .5);
+    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 1., 0., 0., 1.);
+    cairo_set_source (cr, pattern);
+    cairo_pattern_destroy (pattern);
+
+    cairo_mask_surface (cr, mask, 0, 0);
+    cairo_surface_destroy (mask);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test);
+}
+
diff --git a/test/smask-ref.png b/test/smask-ref.png
new file mode 100644
index 0000000..2d98e43
Binary files /dev/null and b/test/smask-ref.png differ
diff --git a/test/smask-stroke-ref.png b/test/smask-stroke-ref.png
new file mode 100644
index 0000000..0d3f7fe
Binary files /dev/null and b/test/smask-stroke-ref.png differ
diff --git a/test/smask-stroke.c b/test/smask-stroke.c
new file mode 100644
index 0000000..c70825a
--- /dev/null
+++ b/test/smask-stroke.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright © 2008 Chris Wilson
+ *
+ * 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. Chris Wilson 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.
+ *
+ * Author: Chris Wilson <chris at chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+    "smask-stroke",
+    "Test the support of \"soft\" masks with strokes",
+    60, 60,
+    draw
+};
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *mask;
+    cairo_pattern_t *pattern;
+    cairo_t *cr2;
+
+    mask = cairo_surface_create_similar (cairo_get_group_target (cr),
+				         CAIRO_CONTENT_ALPHA,
+					 width, height);
+    cr2 = cairo_create (mask);
+
+    cairo_save (cr2); {
+	cairo_set_operator (cr2, CAIRO_OPERATOR_CLEAR);
+	cairo_paint (cr2);
+    } cairo_restore (cr2);
+
+    pattern = cairo_pattern_create_linear (0, 0, width, height);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 1., 1., .5);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.75, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 0., 0., 0., 0.);
+    cairo_set_source (cr2, pattern);
+    cairo_pattern_destroy (pattern);
+
+    cairo_arc (cr2, 0.5 * width, 0.5 * height, 0.4 * height, 0, 2 * M_PI);
+    cairo_stroke (cr2);
+    cairo_destroy (cr2);
+
+
+    cairo_set_source_rgb (cr, 0, 0, 1.0);
+    cairo_paint (cr);
+
+    cairo_set_source_rgb (cr, 1.0, 0, 0);
+    cairo_mask_surface (cr, mask, 0, 0);
+    cairo_surface_destroy (mask);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test);
+}
+
diff --git a/test/smask-text-ref.png b/test/smask-text-ref.png
new file mode 100644
index 0000000..e5ca43f
Binary files /dev/null and b/test/smask-text-ref.png differ
diff --git a/test/smask-text.c b/test/smask-text.c
new file mode 100644
index 0000000..589c71d
--- /dev/null
+++ b/test/smask-text.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright © 2008 Chris Wilson
+ *
+ * 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. Chris Wilson 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.
+ *
+ * Author: Chris Wilson <chris at chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+    "smask-text",
+    "Test the support of \"soft\" masks with text",
+    120, 60,
+    draw
+};
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *mask;
+    cairo_pattern_t *pattern;
+    cairo_t *cr2;
+    cairo_text_extents_t extents;
+
+    mask = cairo_surface_create_similar (cairo_get_group_target (cr),
+				         CAIRO_CONTENT_ALPHA,
+					 width, height);
+    cr2 = cairo_create (mask);
+
+    cairo_save (cr2); {
+	cairo_set_operator (cr2, CAIRO_OPERATOR_CLEAR);
+	cairo_paint (cr2);
+    } cairo_restore (cr2);
+
+    pattern = cairo_pattern_create_linear (0, 0, width, height);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 1., 1., .5);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.75, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 0., 0., 0., 0.);
+    cairo_set_source (cr2, pattern);
+    cairo_pattern_destroy (pattern);
+
+    cairo_select_font_face (cr2,
+			    "Bitstream Vera Sans",
+			    CAIRO_FONT_SLANT_NORMAL,
+			    CAIRO_FONT_WEIGHT_NORMAL);
+    cairo_set_font_size (cr2, 0.5 * height);
+
+    cairo_text_extents (cr2, "cairo", &extents);
+    cairo_move_to (cr2,
+		   floor ((width - extents.width) / 2 + 0.5) - extents.x_bearing,
+		   floor ((height - extents.height) / 2 - 0.5) - extents.y_bearing);
+    cairo_show_text (cr2, "cairo");
+    cairo_destroy (cr2);
+
+    cairo_set_source_rgb (cr, 0, 0, 1.0);
+    cairo_paint (cr);
+
+    cairo_set_source_rgb (cr, 1.0, 0, 0);
+    cairo_mask_surface (cr, mask, 0, 0);
+    cairo_surface_destroy (mask);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test);
+}
+
diff --git a/test/smask.c b/test/smask.c
new file mode 100644
index 0000000..28eaed0
--- /dev/null
+++ b/test/smask.c
@@ -0,0 +1,130 @@
+/*
+ * Copyright © 2008 Chris Wilson
+ *
+ * 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. Chris Wilson 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.
+ *
+ * Author: Chris Wilson <chris at chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+static cairo_test_draw_function_t draw;
+
+cairo_test_t test = {
+    "smask",
+    "Test the support of \"soft\" masks",
+    60, 60,
+    draw
+};
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    static uint32_t data[] = {
+	0x80000000, 0x80000000,
+	0x80000000, 0x80000000,
+    };
+
+    cairo_surface_t *mask, *mask2;
+    cairo_pattern_t *pattern;
+    cairo_t *cr2;
+    cairo_text_extents_t extents;
+
+    mask = cairo_surface_create_similar (cairo_get_group_target (cr),
+				         CAIRO_CONTENT_ALPHA,
+					 width, height);
+    cr2 = cairo_create (mask);
+
+    cairo_save (cr2); {
+	cairo_set_operator (cr2, CAIRO_OPERATOR_CLEAR);
+	cairo_paint (cr2);
+    } cairo_restore (cr2);
+
+    pattern = cairo_pattern_create_linear (0, 0, 0, height);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.0);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.80, 0., 0., 0., 0.0);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.90, 1., 1., 1., 0.25);
+    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 1., 1., 1., 1.0);
+    cairo_set_source (cr2, pattern);
+    cairo_pattern_destroy (pattern);
+
+    cairo_paint (cr2);
+
+    pattern = cairo_pattern_create_linear (0, 0, width, height);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 1., 1., .5);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.75, 1., 1., 1., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 0., 0., 0., 0.);
+    cairo_set_source (cr2, pattern);
+    cairo_pattern_destroy (pattern);
+
+    mask2 = cairo_image_surface_create_for_data ((unsigned char *) data,
+						CAIRO_FORMAT_ARGB32, 2, 2, 8);
+    pattern = cairo_pattern_create_for_surface (mask2);
+    cairo_surface_destroy (mask2);
+    cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
+    cairo_mask (cr2, pattern);
+    cairo_pattern_destroy (pattern);
+
+    cairo_arc (cr2, 0.5 * width, 0.5 * height - 10, 0.2 * height, 0, 2 * M_PI);
+    cairo_fill (cr2);
+
+    cairo_arc (cr2, 0.5 * width, 0.5 * height - 10, 0.25 * height, 0, 2 * M_PI);
+    cairo_stroke (cr2);
+
+    cairo_select_font_face (cr2,
+			    "Bitstream Vera Sans",
+			    CAIRO_FONT_SLANT_NORMAL,
+			    CAIRO_FONT_WEIGHT_NORMAL);
+    cairo_set_font_size (cr2, 0.3 * height);
+
+    cairo_text_extents (cr2, "FG", &extents);
+    cairo_move_to (cr2,
+		   floor ((width - extents.width) / 2 + 0.5) - extents.x_bearing,
+		   floor (height - extents.height - 0.5) - extents.y_bearing - 5);
+    cairo_show_text (cr2, "FG");
+    cairo_destroy (cr2);
+
+    cairo_set_source_rgb (cr, 0, 0, 1.0);
+    cairo_paint (cr);
+
+    pattern = cairo_pattern_create_radial (
+	    0.5 * width, 0.5 * height, 0,
+	    0.5 * width, 0.5 * height, 0.5 *height);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.00, 0., 0., 0., 0.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.25, 1., 0., 0., 1.);
+    cairo_pattern_add_color_stop_rgba (pattern, 0.50, 1., 0., 0., .5);
+    cairo_pattern_add_color_stop_rgba (pattern, 1.00, 1., 0., 0., 1.);
+    cairo_set_source (cr, pattern);
+    cairo_pattern_destroy (pattern);
+
+    cairo_mask_surface (cr, mask, 0, 0);
+    cairo_surface_destroy (mask);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test);
+}
+


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