conform: add offscreen effects fbo size check

https://bugzilla.gnome.org/show_bug.cgi?id=699675
(cherry picked from commit d1041e1f4f5bedc6331e65a7faf60289f26f7fb0)

Signed-off-by: Emmanuele Bassi <ebassi@gnome.org>

3 files changed, 119 insertions, 0 deletions

diff --git a/tests/conform/Makefile.am b/tests/conform/Makefile.am
index 210cbe085..22dcdfca1 100644
--- a/tests/conform/Makefile.am
+++ b/tests/conform/Makefile.am
@@ -55,6 +55,7 @@ units_sources += \
 	actor-iter.c			\
 	actor-layout.c			\
 	actor-offscreen-redirect.c	\
+	actor-offscreen-limit-max-size.c\
 	actor-paint-opacity.c 		\
 	actor-pick.c 			\
 	actor-shader-effect.c		\
diff --git a/tests/conform/actor-offscreen-limit-max-size.c b/tests/conform/actor-offscreen-limit-max-size.c
new file mode 100644
index 000000000..972986604
--- /dev/null
+++ b/tests/conform/actor-offscreen-limit-max-size.c
@@ -0,0 +1,117 @@
+#include <clutter/clutter.h>
+
+#include "test-conform-common.h"
+
+#define STAGE_WIDTH (300)
+#define STAGE_HEIGHT (300)
+
+typedef struct
+{
+  ClutterActor *stage;
+
+  ClutterActor *actor_group1;
+  ClutterEffect *blur_effect1;
+
+  ClutterActor *actor_group2;
+  ClutterEffect *blur_effect2;
+} Data;
+
+static void
+check_results (ClutterStage *stage, gpointer user_data)
+{
+  Data *data = user_data;
+  gfloat width, height;
+
+  clutter_offscreen_effect_get_target_size (CLUTTER_OFFSCREEN_EFFECT (data->blur_effect1),
+                                            &width, &height);
+
+  if (g_test_verbose ())
+    g_print ("Checking effect1 size: %.2f x %.2f\n", width, height);
+
+  g_assert_cmpint (width, <, STAGE_WIDTH);
+  g_assert_cmpint (height, <, STAGE_HEIGHT);
+
+  clutter_offscreen_effect_get_target_size (CLUTTER_OFFSCREEN_EFFECT (data->blur_effect2),
+                                            &width, &height);
+
+  if (g_test_verbose ())
+    g_print ("Checking effect2 size: %.2f x %.2f\n", width, height);
+
+  g_assert_cmpint (width, ==, STAGE_WIDTH);
+  g_assert_cmpint (height, ==, STAGE_HEIGHT);
+
+
+  clutter_main_quit ();
+}
+
+static ClutterActor *
+create_actor (gfloat x, gfloat y,
+              gfloat width, gfloat height,
+              const ClutterColor *color)
+{
+  return g_object_new (CLUTTER_TYPE_ACTOR,
+                       "x", x,
+                       "y", y,
+                       "width", width,
+                       "height", height,
+                       "background-color", color,
+                       NULL);
+}
+
+void
+actor_offscreen_limit_max_size (TestConformSimpleFixture *fixture,
+                                gconstpointer test_data)
+{
+  if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
+    {
+      Data data;
+
+      data.stage = clutter_stage_new ();
+      clutter_stage_set_paint_callback (CLUTTER_STAGE (data.stage),
+                                        check_results,
+                                        &data,
+                                        NULL);
+      clutter_actor_set_size (data.stage, STAGE_WIDTH, STAGE_HEIGHT);
+
+      data.actor_group1 = clutter_actor_new ();
+      clutter_actor_add_child (data.stage, data.actor_group1);
+      data.blur_effect1 = clutter_blur_effect_new ();
+      clutter_actor_add_effect (data.actor_group1, data.blur_effect1);
+      clutter_actor_add_child (data.actor_group1,
+                               create_actor (10, 10,
+                                             100, 100,
+                                             CLUTTER_COLOR_Blue));
+      clutter_actor_add_child (data.actor_group1,
+                               create_actor (100, 100,
+                                             100, 100,
+                                             CLUTTER_COLOR_Gray));
+
+      data.actor_group2 = clutter_actor_new ();
+      clutter_actor_add_child (data.stage, data.actor_group2);
+      data.blur_effect2 = clutter_blur_effect_new ();
+      clutter_actor_add_effect (data.actor_group2, data.blur_effect2);
+      clutter_actor_add_child (data.actor_group2,
+                               create_actor (-10, -10,
+                                             100, 100,
+                                             CLUTTER_COLOR_Yellow));
+      clutter_actor_add_child (data.actor_group2,
+                               create_actor (250, 10,
+                                             100, 100,
+                                             CLUTTER_COLOR_ScarletRed));
+      clutter_actor_add_child (data.actor_group2,
+                               create_actor (10, 250,
+                                             100, 100,
+                                             CLUTTER_COLOR_Yellow));
+
+      clutter_actor_show (data.stage);
+
+      clutter_main ();
+
+      clutter_actor_destroy (data.stage);
+
+      if (g_test_verbose ())
+        g_print ("OK\n");
+    }
+  else if (g_test_verbose ())
+    g_print ("Skipping\n");
+}
diff --git a/tests/conform/test-conform-main.c b/tests/conform/test-conform-main.c
index b623038e7..5a9b5b93e 100644
--- a/tests/conform/test-conform-main.c
+++ b/tests/conform/test-conform-main.c
@@ -145,6 +145,7 @@ main (int argc, char **argv)
   TEST_CONFORM_SIMPLE ("/actor", actor_basic_layout);
   TEST_CONFORM_SIMPLE ("/actor", actor_margin_layout);
   TEST_CONFORM_SIMPLE ("/actor", actor_offscreen_redirect);
+  TEST_CONFORM_SIMPLE ("/actor", actor_offscreen_limit_max_size);
   TEST_CONFORM_SIMPLE ("/actor", actor_shader_effect);
 
   TEST_CONFORM_SIMPLE ("/actor/iter", actor_iter_traverse_children);