[test/solid-pattern-cache-stress] Do what it says on the tin.

Actually draw to the surface after setting the source in order to
trigger use of the solid surface cache.

1 files changed, 117 insertions, 31 deletions

diff --git a/test/solid-pattern-cache-stress.c b/test/solid-pattern-cache-stress.c
index 957b2044c..39c645491 100644
--- a/test/solid-pattern-cache-stress.c
+++ b/test/solid-pattern-cache-stress.c
@@ -28,24 +28,118 @@
 #endif
 
 #include "cairo-test.h"
+#include <stdlib.h> /* drand48() */
+
+#define LOOPS 10
+#define NRAND 100
+
+#ifndef HAVE_DRAND48
+#define drand48() (rand () / (double) RAND_MAX)
+#endif
 
 static cairo_test_draw_function_t draw;
 
 cairo_test_t test = {
     "solid-pattern-cache-stress",
     "Stress the solid pattern cache and ensure it behaves",
-    0, 0,
+    1, 1,
     draw
 };
-#include <cairo.h>
-#include <stdlib.h>
 
-#define LOOPS 10
-#define NRAND 100
+static cairo_t *
+_cairo_create_similar (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *similar;
 
-#ifndef HAVE_DRAND48
-#define drand48() (rand () / (double) RAND_MAX)
-#endif
+    similar = cairo_surface_create_similar (cairo_get_target (cr),
+	                                    cairo_surface_get_content (cairo_get_target (cr)),
+				            width, height);
+    cr = cairo_create (similar);
+    cairo_surface_destroy (similar);
+
+    return cr;
+}
+
+static cairo_t *
+_cairo_create_image (cairo_t *cr, cairo_format_t format, int width, int height)
+{
+    cairo_surface_t *image;
+
+    image = cairo_image_surface_create (format, width, height);
+    cr = cairo_create (image);
+    cairo_surface_destroy (image);
+
+    return cr;
+}
+
+static void
+_draw (cairo_t *cr,
+       double red,
+       double green,
+       double blue)
+{
+    cairo_text_extents_t extents;
+
+    cairo_set_source_rgb (cr, red, green, blue);
+    cairo_paint (cr);
+
+    cairo_move_to (cr, 0, 0);
+    cairo_line_to (cr, 1, 1);
+    cairo_stroke (cr);
+
+    cairo_mask (cr, cairo_get_source (cr));
+
+    cairo_text_extents (cr, "cairo", &extents);
+    cairo_move_to (cr,
+	           -extents.x_bearing - .5 * extents.width,
+		   -extents.y_bearing - .5 * extents.height);
+    cairo_show_text (cr, "cairo");
+
+}
+
+static void
+use_similar (cairo_t *cr,
+	    double red,
+	    double green,
+	    double blue)
+{
+    cr = _cairo_create_similar (cr, 1, 1);
+
+    _draw (cr, red, green, blue);
+
+    cairo_destroy (cr);
+}
+
+static void
+use_image (cairo_t *cr,
+	   cairo_format_t format,
+	   double red,
+	   double green,
+	   double blue)
+{
+    cr = _cairo_create_image (cr, format, 1, 1);
+
+    _draw (cr, red, green, blue);
+
+    cairo_destroy (cr);
+}
+
+static void
+use_solid (cairo_t *cr,
+	   double red,
+	   double green,
+	   double blue)
+{
+    /* mix in dissimilar solids */
+    use_image (cr, CAIRO_FORMAT_A1, red, green, blue);
+    use_image (cr, CAIRO_FORMAT_A8, red, green, blue);
+    use_image (cr, CAIRO_FORMAT_RGB24, red, green, blue);
+    use_image (cr, CAIRO_FORMAT_ARGB32, red, green, blue);
+
+    use_similar (cr, red, green, blue);
+
+    _draw (cr, red, green, blue);
+}
 
 static cairo_test_status_t
 draw (cairo_t *cr, int width, int height)
@@ -54,32 +148,25 @@ draw (cairo_t *cr, int width, int height)
     int i;
 
     for (loop = 0; loop < LOOPS; loop++) {
-	cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
-	cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); /* red */
-	cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); /* green */
-	cairo_set_source_rgb (cr, 1.0, 1.0, 0.0); /* yellow */
-	cairo_set_source_rgb (cr, 0.0, 0.0, 1.0); /* blue */
-	cairo_set_source_rgb (cr, 1.0, 0.0, 1.0); /* magenta */
-	cairo_set_source_rgb (cr, 0.0, 1.0, 1.0); /* cyan */
-	cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
-
-	cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0); /* black */
-	cairo_set_source_rgba (cr, 1.0, 0.0, 0.0, 1.0); /* red */
-	cairo_set_source_rgba (cr, 0.0, 1.0, 0.0, 1.0); /* green */
-	cairo_set_source_rgba (cr, 1.0, 1.0, 0.0, 1.0); /* yellow */
-	cairo_set_source_rgba (cr, 0.0, 0.0, 1.0, 1.0); /* blue */
-	cairo_set_source_rgba (cr, 1.0, 0.0, 1.0, 1.0); /* magenta */
-	cairo_set_source_rgba (cr, 0.0, 1.0, 1.0, 1.0); /* cyan */
-	cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 1.0); /* white */
+	for (i = 0; i < LOOPS; i++) {
+	    use_solid (cr, 0.0, 0.0, 0.0); /* black */
+	    use_solid (cr, 1.0, 0.0, 0.0); /* red */
+	    use_solid (cr, 0.0, 1.0, 0.0); /* green */
+	    use_solid (cr, 1.0, 1.0, 0.0); /* yellow */
+	    use_solid (cr, 0.0, 0.0, 1.0); /* blue */
+	    use_solid (cr, 1.0, 0.0, 1.0); /* magenta */
+	    use_solid (cr, 0.0, 1.0, 1.0); /* cyan */
+	    use_solid (cr, 1.0, 1.0, 1.0); /* white */
+	}
 
 	for (i = 0; i < NRAND; i++)
-	    cairo_set_source_rgba (cr,
-		                   drand48 (),
-				   drand48 (),
-				   drand48 (),
-				   drand48 ());
+	    use_solid (cr, drand48 (), drand48 (), drand48 ());
     }
 
+    /* stress test only, so clear the surface before comparing */
+    cairo_set_source_rgb (cr, 0, 0, 1);
+    cairo_paint (cr);
+
     return CAIRO_TEST_SUCCESS;
 }
 
@@ -88,4 +175,3 @@ main (void)
 {
     return cairo_test (&test);
 }
-