[test] Revamp surface-source

Include a translucent region in the source that exercises the xlib bug
that I'm trying to fix. Hmm.

test/Makefile.am

@@ -548,7 +548,8 @@ REFERENCE_IMAGES = \
 	huge-radial.ref.png \
 	image-surface-source.ps2.ref.png \
 	image-surface-source.ps3.ref.png \
-	image-surface-source.ref.png \
+	image-surface-source.rgb24.ref.png \
+	image-surface-source.argb32.ref.png \
 	image-surface-source.svg12.argb32.xfail.png \
 	image-surface-source.svg12.rgb24.xfail.png \
 	implicit-close.ref.png \
@@ -747,12 +748,14 @@ REFERENCE_IMAGES = \
 	path-append.xlib-fallback.ref.png \
 	path-append.xlib.ref.png \
 	pattern-getters.ref.png \
-	pdf-surface-source.ref.png \
+	pdf-surface-source.rgb24.ref.png \
+	pdf-surface-source.argb32.ref.png \
 	pdf-surface-source.svg12.argb32.xfail.png \
 	pdf-surface-source.svg12.rgb24.xfail.png \
 	pixman-rotate.ref.png \
 	pixman-rotate.rgb24.ref.png \
-	ps-surface-source.ref.png \
+	ps-surface-source.rgb24.ref.png \
+	ps-surface-source.argb32.ref.png \
 	ps-surface-source.svg12.argb32.xfail.png \
 	ps-surface-source.svg12.rgb24.xfail.png \
 	push-group.ref.png \
@@ -761,9 +764,10 @@ REFERENCE_IMAGES = \
 	push-group.xlib.rgb24.ref.png \
 	push-group-color.ref.png \
 	push-group-color.xlib.ref.png \
+	quartz-surface-source.rgb24.ref.png \
+	quartz-surface-source.argb32.ref.png \
 	quartz-surface-source.ps2.ref.png \
 	quartz-surface-source.ps3.ref.png \
-	quartz-surface-source.ref.png \
 	radial-gradient.pdf.ref.png \
 	radial-gradient.quartz.ref.png \
 	radial-gradient.ref.png \
@@ -922,7 +926,8 @@ REFERENCE_IMAGES = \
 	surface-pattern.ps.xfail.png \
 	surface-pattern.ref.png \
 	surface-pattern.svg.xfail.png \
-	svg-surface-source.ref.png \
+	svg-surface-source.rgb24.ref.png \
+	svg-surface-source.argb32.ref.png \
 	svg-surface-source.svg12.argb32.xfail.png \
 	svg-surface-source.svg12.rgb24.xfail.png \
 	test-fallback16-surface-source.ps.ref.png \
@@ -1023,9 +1028,10 @@ REFERENCE_IMAGES = \
 	user-font.svg.ref.png \
 	user-font.xlib.ref.png \
 	xlib-expose-event.ref.png \
+	xlib-surface-source.rgb24.ref.png \
+	xlib-surface-source.argb32.ref.png \
 	xlib-surface-source.ps2.ref.png \
 	xlib-surface-source.ps3.ref.png \
-	xlib-surface-source.ref.png \
 	xlib-surface-source.svg12.argb32.xfail.png \
 	xlib-surface-source.svg12.rgb24.xfail.png \
 	zero-alpha.ref.png

test/surface-source.c

@@ -34,16 +34,22 @@ static cairo_surface_t *create_source_surface (int size);
  */
 #define SOURCE_SIZE 2000
 #define INTER_SIZE 512
-#define SIZE 90
+#define SIZE 96
 
 static void
 draw_pattern (cairo_surface_t **surface_inout, int surface_size)
 {
     cairo_t *cr;
+    int mid = surface_size/2;
 
     cr = cairo_create (*surface_inout);
     cairo_surface_destroy (*surface_inout);
 
+    cairo_rectangle (cr, 0, 0, surface_size, surface_size);
+    cairo_rectangle (cr, mid - SIZE/4, mid + SIZE/4, SIZE/2, -SIZE/2);
+    cairo_clip (cr);
+
+    /* outside squares -> opaque */
     cairo_set_source_rgb (cr, 1, 1, 1);
     cairo_rectangle (cr,
 		     0, 0,
@@ -65,6 +71,33 @@ draw_pattern (cairo_surface_t **surface_inout, int surface_size)
 		     surface_size / 2, surface_size / 2);
     cairo_fill (cr);
 
+    cairo_reset_clip (cr);
+    cairo_rectangle (cr, mid - SIZE/4, mid - SIZE/4, SIZE/2, SIZE/2);
+    cairo_clip (cr);
+
+    /* inside squares -> translucent */
+    cairo_set_source_rgba (cr, 0, 0, 1, .5);
+    cairo_rectangle (cr,
+		     0, 0,
+		     surface_size / 2, surface_size / 2);
+    cairo_fill (cr);
+    cairo_set_source_rgba (cr, 0, 1, 0, .5);
+    cairo_rectangle (cr,
+		     surface_size / 2, 0,
+		     surface_size / 2, surface_size / 2);
+    cairo_fill (cr);
+    cairo_set_source_rgba (cr, 1, 0, 0, .5);
+    cairo_rectangle (cr,
+		     0, surface_size / 2,
+		     surface_size / 2, surface_size / 2);
+    cairo_fill (cr);
+    cairo_set_source_rgba (cr, 1, 1, 1, .5);
+    cairo_rectangle (cr,
+		     surface_size / 2, surface_size / 2,
+		     surface_size / 2, surface_size / 2);
+    cairo_fill (cr);
+
+
     *surface_inout = cairo_surface_reference (cairo_get_target (cr));
     cairo_destroy (cr);
 }
@@ -101,7 +134,7 @@ draw (cairo_t *cr, int width, int height)
 			      (width - INTER_SIZE)/2,
 			      (height - INTER_SIZE)/2);
     cairo_destroy (cr2);
-    cairo_rectangle (cr, 15, 15, 60, 60);
+    cairo_rectangle (cr, 16, 16, 64, 64);
     cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
     cairo_fill (cr);