Hi,
I had done a second test, changing the interactive test "test-multistage.c".
If you try the modified test, you can see the texture moving along the
window-stage; but if you add more than 1 added stage
the movement loses fluidity.
You know if there is a solution, or it's a problem with my hardware or a
clutter limit ?
Thank's in advance
Modified code:
#include <gmodule.h>
#include <clutter/clutter.h>
static gint n_stages = 1;
static gboolean
tex_button_cb (ClutterActor *actor,
ClutterEvent *event,
gpointer data)
{
clutter_actor_hide (actor);
return TRUE;
}
static gboolean
on_button_press (ClutterActor *actor,
ClutterEvent *event,
gpointer data)
{
ClutterActor *new_stage;
ClutterActor *label, *tex;
gint width, height;
gchar *stage_label, *win_title;
ClutterColor color = { 0xdd, 0x33, 0xdd, 0xff };
ClutterColor white = { 0x99, 0x99, 0x99, 0xff };
ClutterTimeline *timeline;
ClutterAlpha *alpha;
ClutterBehaviour *m_behave;
ClutterPath *m_path;
new_stage = clutter_stage_new ();
if (!new_stage)
return FALSE;
/* FIXME: below should really be automatic */
/* clutter_stage_ensure_cogl_context (CLUTTER_STAGE(new_stage)); */
clutter_stage_set_color (CLUTTER_STAGE (new_stage), &color);
clutter_actor_set_size (new_stage, 320, 240);
tex = clutter_texture_new_from_file (TESTS_DATADIR
G_DIR_SEPARATOR_S
"redhand.png",
NULL);
if (!tex)
g_error ("pixbuf load failed");
clutter_actor_set_reactive (tex, TRUE);
g_signal_connect (tex, "button-press-event",
G_CALLBACK (tex_button_cb), NULL);
clutter_container_add_actor (CLUTTER_CONTAINER (new_stage), tex);
stage_label = g_strdup_printf ("<b>Stage: %d</b>", ++n_stages);
label = clutter_text_new_with_text ("Mono 12", stage_label);
clutter_text_set_color (CLUTTER_TEXT (label), &white);
clutter_text_set_use_markup (CLUTTER_TEXT (label), TRUE);
width = (clutter_actor_get_width (new_stage)
- clutter_actor_get_width (label)) / 2;
height = (clutter_actor_get_height (new_stage)
- clutter_actor_get_height (label)) / 2;
clutter_actor_set_position (label, width, height);
clutter_container_add_actor (CLUTTER_CONTAINER (new_stage), label);
clutter_actor_show (label);
g_free (stage_label);
/*
g_signal_connect (new_stage, "button-press-event",
G_CALLBACK (clutter_actor_destroy),
NULL);
*/
win_title = g_strdup_printf ("Stage:%p", new_stage);
clutter_stage_set_title (CLUTTER_STAGE(new_stage), win_title);
timeline = clutter_timeline_new ((long)(320.0 * 16.6666 / 4.0));
clutter_timeline_set_loop (timeline, TRUE);
alpha = clutter_alpha_new_full (timeline, CLUTTER_LINEAR);
m_path = clutter_path_new ();
clutter_path_add_move_to (m_path, 0, 0);
clutter_path_add_line_to (m_path, 320, 0);
m_behave = clutter_behaviour_path_new (alpha, m_path);
clutter_behaviour_apply (m_behave, tex);
clutter_timeline_start (timeline);
clutter_actor_show_all (new_stage);
return TRUE;
}
G_MODULE_EXPORT int
test_multistage_main (int argc, char *argv[])
{
ClutterActor *stage_default;
ClutterActor *label;
gint width, height;
gchar *win_title;
clutter_init (&argc, &argv);
stage_default = clutter_stage_get_default ();
g_signal_connect (stage_default, "button-press-event",
G_CALLBACK (on_button_press),
NULL);
label = clutter_text_new_with_text ("Mono 16", "Default stage");
width = (clutter_actor_get_width (stage_default)
- clutter_actor_get_width (label))
/ 2;
height = (clutter_actor_get_height (stage_default)
- clutter_actor_get_height (label))
/ 2;
clutter_actor_set_position (label, width, height);
clutter_container_add_actor (CLUTTER_CONTAINER (stage_default), label);
clutter_actor_show (label);
win_title = g_strdup_printf ("Stage:%p", stage_default);
clutter_stage_set_title (CLUTTER_STAGE(stage_default), win_title);
clutter_actor_show (stage_default);
clutter_main ();
return 0;
}
2010/11/10 Angelo Butti <buttiang...@gmail.com>
> Hi all,
> I have this problem.
>
> I must move different textures on different stage; to do this I had created
> two stages (the defalt + the new one),
> 2 textures, one for each stage and a timeline connected to "new-frame".
> Than, I had used the clutter_actor_set_position for each texture inside the
> callback function "new-frame" to move the texture.
>
> All is ok if I use only 1 stage, but with 2 stages (= 2 windows on the
> monitor), the framerate decrise.
>
> Below the example without texture but with a rectangle :
> (I use Fedora 13 with nVidia GeForce 7300 go)
>
> (comment/uncomment -> " clutter_actor_set_position (rect1, x_pos, 0); " to
> see the framerate difference !! ):
>
> #include <glib.h>
>
> #include <clutter/clutter.h>
> #include <stdlib.h>
>
> ClutterActor *rect = NULL;
> ClutterActor *rect1 = NULL;
>
> GError *error;
>
> char dir = 0;
> int x_pos = 640;
>
> void
> on_timeline_new_frame (ClutterTimeline *timeline,
> gint frame_num, gpointer data)
> {
> if (!dir)
> x_pos = x_pos - 4;
> else
> x_pos = x_pos + 4;
>
> if (x_pos == 0)
> dir = !dir;
> else if (x_pos == 640)
> dir = !dir;
>
> clutter_actor_set_position (rect, x_pos, 0);
> clutter_actor_set_position (rect1, x_pos, 0);
> }
>
> int main(int argc, char *argv[])
> {
> ClutterColor stage_color = { 0x00, 0x00, 0x00, 0xff };
> ClutterColor rect_color = { 0xff, 0xff, 0xff, 0x99 };
>
> clutter_init (&argc, &argv);
>
> /* Get the stage and set its size and color: */
> ClutterActor *stage = clutter_stage_get_default ();
> clutter_actor_set_size (stage, 640, 400);
> clutter_stage_set_color (CLUTTER_STAGE (stage), &stage_color);
>
> ClutterActor *stage1 = clutter_stage_new();
> clutter_actor_set_size (stage1, 640, 400);
> clutter_stage_set_color (CLUTTER_STAGE (stage1), &stage_color);
>
> /* Add a rectangle to the stage: */
> rect = clutter_rectangle_new_with_color (&rect_color);
> clutter_actor_set_size (rect, 640, 400);
> clutter_actor_set_position (rect, 640, 0);
> clutter_container_add_actor (CLUTTER_CONTAINER (stage), rect);
> clutter_actor_show (rect);
>
> /* Add a rectangle to the stage: */
> rect1 = clutter_rectangle_new_with_color (&rect_color);
> clutter_actor_set_size (rect1, 640, 400);
> clutter_actor_set_position (rect1, 640, 0);
> clutter_container_add_actor (CLUTTER_CONTAINER (stage1), rect1);
> clutter_actor_show (rect1);
>
> /* Show the stage: */
> clutter_actor_show (stage);
> clutter_actor_show (stage1);
>
> ClutterTimeline *timeline = clutter_timeline_new(1000 /* milliseconds
> */);
> g_signal_connect (timeline, "new-frame", G_CALLBACK
> (on_timeline_new_frame), NULL);
> clutter_timeline_set_loop(timeline, TRUE);
> clutter_timeline_start(timeline);
>
> /* Start the main loop, so we can respond to events: */
> clutter_main ();
>
> g_object_unref (timeline);
>
> return EXIT_SUCCESS;
> }
>
>
> Where is the problem ?
> Angelo
>
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