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mutter-performance-source/tests/interactive/test-texture-quality.c
Emmanuele Bassi 52811b240f [stage] Coalesce fog and perspective API
The fog and perspective API is currently split in two parts:

  - the floating point version, using values

  - the fixed point version, using structures

The relative properties are using the structure types, since they
are meant to set multiple values at the same time. Instead of
using bare values, the whole API should be coalesced into two
simple calls using structures to match the GObject properties.

Thus:

  clutter_stage_set_fog (ClutterStage*, const ClutterFog*)
  clutter_stage_get_fog (ClutterStage*, ClutterFog*)

  clutter_stage_set_perspective (ClutterStage*, const ClutterPerspective*)
  clutter_stage_get_perspective (ClutterStage*, ClutterPerspective*)

Which supercedes the fixed point and floating point variants.

More importantly, both ClutterFog and ClutterPerspective should
using floating point values, since that's what get passed to
COGL anyway.

ClutterFog should also drop the "density" member, since ClutterStage
only allows linear fog; non-linear fog distribution can be achieved
using a signal handler and calling cogl_set_fog() directly; this keeps
the API compact yet extensible.

Finally, there is no ClutterStage:fog so it should be added.
2009-03-10 12:38:03 +00:00

100 lines
3.1 KiB
C

#include <stdlib.h>
#include <gmodule.h>
#include <clutter/clutter.h>
/* each time the timeline animating the label completes, swap the direction */
static void
timeline_completed (ClutterTimeline *timeline,
gpointer user_data)
{
clutter_timeline_set_direction (timeline,
!clutter_timeline_get_direction (timeline));
clutter_timeline_start (timeline);
}
static gboolean
change_filter (gpointer actor)
{
ClutterTextureQuality old_quality;
old_quality = clutter_texture_get_filter_quality (actor);
switch (old_quality)
{
case CLUTTER_TEXTURE_QUALITY_LOW:
clutter_texture_set_filter_quality (actor,
CLUTTER_TEXTURE_QUALITY_MEDIUM);
g_print ("Setting texture rendering quality to medium\n");
break;
case CLUTTER_TEXTURE_QUALITY_MEDIUM:
clutter_texture_set_filter_quality (actor,
CLUTTER_TEXTURE_QUALITY_HIGH);
g_print ("Setting texture rendering quality to high\n");
break;
case CLUTTER_TEXTURE_QUALITY_HIGH:
clutter_texture_set_filter_quality (actor,
CLUTTER_TEXTURE_QUALITY_LOW);
g_print ("Setting texture rendering quality to low\n");
break;
}
return TRUE;
}
G_MODULE_EXPORT gint
test_texture_quality_main (int argc, char *argv[])
{
ClutterTimeline *timeline;
ClutterAlpha *alpha;
ClutterBehaviour *depth_behavior;
ClutterActor *stage;
ClutterActor *image;
ClutterColor stage_color = { 0x12, 0x34, 0x56, 0xff };
ClutterFog stage_fog = { 10.0, -50.0 };
GError *error;
clutter_init (&argc, &argv);
stage = clutter_stage_get_default ();
clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
clutter_stage_set_use_fog (CLUTTER_STAGE (stage), TRUE);
clutter_stage_set_fog (CLUTTER_STAGE (stage), &stage_fog);
g_signal_connect (stage,
"button-press-event", G_CALLBACK (clutter_main_quit),
NULL);
error = NULL;
image = clutter_texture_new_from_file (argv[1]?argv[1]:"redhand.png", &error);
if (error)
g_error ("Unable to load image: %s", error->message);
if (!argv[1])
g_print ("Hint: the redhand.png isn't a good test image for this test.\n"
"This test can take any clutter loadable image as an argument\n");
/* center the image */
clutter_actor_set_position (image,
(clutter_actor_get_width (stage) - clutter_actor_get_width (image))/2,
(clutter_actor_get_height (stage) - clutter_actor_get_height (image))/2);
clutter_container_add (CLUTTER_CONTAINER (stage), image, NULL);
timeline = clutter_timeline_new (60*5, 60);
g_signal_connect (timeline,
"completed", G_CALLBACK (timeline_completed),
NULL);
alpha = clutter_alpha_new_full (timeline, CLUTTER_LINEAR);
depth_behavior = clutter_behaviour_depth_new (alpha, -2500, 400);
clutter_behaviour_apply (depth_behavior, image);
clutter_actor_show (stage);
clutter_timeline_start (timeline);
g_timeout_add (10000, change_filter, image);
clutter_main ();
g_object_unref (depth_behavior);
g_object_unref (timeline);
return EXIT_SUCCESS;
}