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mutter/tests/interactive/test-cogl-tex-polygon.c
Emmanuele Bassi 71498a6376 [cogl] Remove max_waste argument from Texture ctors 
The CoglTexture constructors expose the "max-waste" argument for
controlling the maximum amount of wasted areas for slicing or,
if set to -1, disables slicing.

Slicing is really relevant only for large images that are never
repeated, so it's a useful feature only in controlled use cases.
Specifying the amount of wasted area is, on the other hand, just
a way to mess up this feature; 99% the times, you either pull this
number out of thin air, hoping it's right, or you try to do the
right thing and you choose the wrong number anyway.

Instead, we can use the CoglTextureFlags to control whether the
texture should not be sliced (useful for Clutter-GST and for the
texture-from-pixmap actors) and provide a reasonable value for
enabling the slicing ourself. At some point, we might even
provide a way to change the default at compile time or at run time,
for particular platforms.

Since max_waste is gone, the :tile-waste property of ClutterTexture
becomes read-only, and it proxies the cogl_texture_get_max_waste()
function.

Inside Clutter, the only cases where the max_waste argument was
not set to -1 are in the Pango glyph cache (which is a POT texture
anyway) and inside the test cases where we want to force slicing;
for the latter we can create larger textures that will be bigger than
the threshold we set.

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
Signed-off-by: Robert Bragg <robert@linux.intel.com>
Signed-off-by: Neil Roberts <neil@linux.intel.com>
2009-05-23 19:35:19 +01:00

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#include <config.h>
#include <glib.h>
#include <gmodule.h>
#include <stdlib.h>
#include <clutter/clutter.h>
#include <cogl/cogl.h>
/* Coglbox declaration
*--------------------------------------------------*/
G_BEGIN_DECLS
#define TEST_TYPE_COGLBOX test_coglbox_get_type()
#define TEST_COGLBOX(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), \
TEST_TYPE_COGLBOX, TestCoglboxClass))
#define TEST_COGLBOX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), \
TEST_TYPE_COGLBOX, TestCoglboxClass))
#define TEST_IS_COGLBOX(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
TEST_TYPE_COGLBOX))
#define TEST_IS_COGLBOX_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), \
TEST_TYPE_COGLBOX))
#define TEST_COGLBOX_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), \
TEST_TYPE_COGLBOX, TestCoglboxClass))
typedef struct _TestCoglbox TestCoglbox;
typedef struct _TestCoglboxClass TestCoglboxClass;
typedef struct _TestCoglboxPrivate TestCoglboxPrivate;
struct _TestCoglbox
{
ClutterActor parent;
/*< private >*/
TestCoglboxPrivate *priv;
};
struct _TestCoglboxClass
{
ClutterActorClass parent_class;
/* padding for future expansion */
void (*_test_coglbox1) (void);
void (*_test_coglbox2) (void);
void (*_test_coglbox3) (void);
void (*_test_coglbox4) (void);
};
static GType test_coglbox_get_type (void) G_GNUC_CONST;
G_END_DECLS
/* Coglbox private declaration
*--------------------------------------------------*/
G_DEFINE_TYPE (TestCoglbox, test_coglbox, CLUTTER_TYPE_ACTOR);
#define TEST_COGLBOX_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), TEST_TYPE_COGLBOX, TestCoglboxPrivate))
struct _TestCoglboxPrivate
{
CoglHandle sliced_tex, not_sliced_tex;
gint frame;
gboolean use_sliced;
gboolean use_linear_filtering;
};
/* Coglbox implementation
*--------------------------------------------------*/
static void
test_coglbox_fade_texture (CoglHandle tex_id,
gfloat x1,
gfloat y1,
gfloat x2,
gfloat y2,
gfloat tx1,
gfloat ty1,
gfloat tx2,
gfloat ty2)
{
CoglTextureVertex vertices[4];
int i;
vertices[0].x = x1;
vertices[0].y = y1;
vertices[0].z = 0;
vertices[0].tx = tx1;
vertices[0].ty = ty1;
vertices[1].x = x1;
vertices[1].y = y2;
vertices[1].z = 0;
vertices[1].tx = tx1;
vertices[1].ty = ty2;
vertices[2].x = x2;
vertices[2].y = y2;
vertices[2].z = 0;
vertices[2].tx = tx2;
vertices[2].ty = ty2;
vertices[3].x = x2;
vertices[3].y = y1;
vertices[3].z = 0;
vertices[3].tx = tx2;
vertices[3].ty = ty1;
for (i = 0; i < 4; i++)
{
cogl_color_set_from_4ub (&(vertices[i].color),
255,
255,
255,
((i ^ (i >> 1)) & 1) ? 0 : 128);
}
cogl_set_source_texture (tex_id);
cogl_polygon (vertices, 4, TRUE);
cogl_set_source_color4ub (255, 255, 255, 255);
}
static void
test_coglbox_triangle_texture (CoglHandle tex_id,
gfloat x,
gfloat y,
gfloat tx1,
gfloat ty1,
gfloat tx2,
gfloat ty2,
gfloat tx3,
gfloat ty3)
{
CoglTextureVertex vertices[3];
int tex_width = cogl_texture_get_width (tex_id);
int tex_height = cogl_texture_get_height (tex_id);
vertices[0].x = x + tx1 * tex_width;
vertices[0].y = y + ty1 * tex_height;
vertices[0].z = 0;
vertices[0].tx = tx1;
vertices[0].ty = ty1;
vertices[1].x = x + tx2 * tex_width;
vertices[1].y = y + ty2 * tex_height;
vertices[1].z = 0;
vertices[1].tx = tx2;
vertices[1].ty = ty2;
vertices[2].x = x + tx3 * tex_width;
vertices[2].y = y + ty3 * tex_height;
vertices[2].z = 0;
vertices[2].tx = tx3;
vertices[2].ty = ty3;
cogl_set_source_texture (tex_id);
cogl_polygon (vertices, 3, FALSE);
}
static void
test_coglbox_paint (ClutterActor *self)
{
TestCoglboxPrivate *priv = TEST_COGLBOX_GET_PRIVATE (self);
CoglHandle tex_handle = priv->use_sliced ? priv->sliced_tex
: priv->not_sliced_tex;
int tex_width = cogl_texture_get_width (tex_handle);
int tex_height = cogl_texture_get_height (tex_handle);
cogl_texture_set_filters (tex_handle,
priv->use_linear_filtering
? COGL_TEXTURE_FILTER_LINEAR :
COGL_TEXTURE_FILTER_NEAREST,
priv->use_linear_filtering
? COGL_TEXTURE_FILTER_LINEAR :
COGL_TEXTURE_FILTER_NEAREST);
cogl_push_matrix ();
cogl_translate (tex_width / 2, 0, 0);
cogl_rotate (priv->frame, 0, 1, 0);
cogl_translate (-tex_width / 2, 0, 0);
/* Draw a hand and refect it */
cogl_set_source_texture (tex_handle);
cogl_rectangle_with_texture_coords (0, 0, tex_width, tex_height,
0, 0, 1, 1);
test_coglbox_fade_texture (tex_handle,
0, tex_height,
tex_width, (tex_height * 3 / 2),
0.0, 1.0,
1.0, 0.5);
cogl_pop_matrix ();
cogl_push_matrix ();
cogl_translate (tex_width * 3 / 2 + 60, 0, 0);
cogl_rotate (priv->frame, 0, 1, 0);
cogl_translate (-tex_width / 2 - 10, 0, 0);
/* Draw the texture split into two triangles */
test_coglbox_triangle_texture (tex_handle,
0, 0,
0, 0,
0, 1,
1, 1);
test_coglbox_triangle_texture (tex_handle,
20, 0,
0, 0,
1, 0,
1, 1);
cogl_pop_matrix ();
}
static void
test_coglbox_finalize (GObject *object)
{
G_OBJECT_CLASS (test_coglbox_parent_class)->finalize (object);
}
static void
test_coglbox_dispose (GObject *object)
{
TestCoglboxPrivate *priv;
priv = TEST_COGLBOX_GET_PRIVATE (object);
cogl_handle_unref (priv->not_sliced_tex);
cogl_handle_unref (priv->sliced_tex);
G_OBJECT_CLASS (test_coglbox_parent_class)->dispose (object);
}
static void
test_coglbox_init (TestCoglbox *self)
{
TestCoglboxPrivate *priv;
GError *error = NULL;
self->priv = priv = TEST_COGLBOX_GET_PRIVATE (self);
priv->use_linear_filtering = FALSE;
priv->use_sliced = FALSE;
priv->sliced_tex =
cogl_texture_new_from_file ("redhand.png",
COGL_TEXTURE_NONE,
COGL_PIXEL_FORMAT_ANY,
&error);
if (priv->sliced_tex == COGL_INVALID_HANDLE)
{
if (error)
{
g_warning ("Texture loading failed: %s", error->message);
g_error_free (error);
error = NULL;
}
else
g_warning ("Texture loading failed: <unknown>");
}
priv->not_sliced_tex =
cogl_texture_new_from_file ("redhand.png",
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_ANY,
&error);
if (priv->not_sliced_tex == COGL_INVALID_HANDLE)
{
if (error)
{
g_warning ("Texture loading failed: %s", error->message);
g_error_free (error);
}
else
g_warning ("Texture loading failed: <unknown>");
}
}
static void
test_coglbox_class_init (TestCoglboxClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
gobject_class->finalize = test_coglbox_finalize;
gobject_class->dispose = test_coglbox_dispose;
actor_class->paint = test_coglbox_paint;
g_type_class_add_private (gobject_class, sizeof (TestCoglboxPrivate));
}
static ClutterActor*
test_coglbox_new (void)
{
return g_object_new (TEST_TYPE_COGLBOX, NULL);
}
static void
frame_cb (ClutterTimeline *timeline,
gint frame_num,
gpointer data)
{
TestCoglboxPrivate *priv = TEST_COGLBOX_GET_PRIVATE (data);
priv->frame = frame_num;
clutter_actor_queue_redraw (CLUTTER_ACTOR (data));
}
static void
update_toggle_text (ClutterText *button, gboolean val)
{
clutter_text_set_text (button, val ? "Enabled" : "Disabled");
}
static gboolean
on_toggle_click (ClutterActor *button, ClutterEvent *event,
gboolean *toggle_val)
{
update_toggle_text (CLUTTER_TEXT (button), *toggle_val = !*toggle_val);
return TRUE;
}
static ClutterActor *
make_toggle (const char *label_text, gboolean *toggle_val)
{
ClutterActor *group = clutter_group_new ();
ClutterActor *label = clutter_text_new_with_text ("Sans 14", label_text);
ClutterActor *button = clutter_text_new_with_text ("Sans 14", "");
clutter_actor_set_reactive (button, TRUE);
update_toggle_text (CLUTTER_TEXT (button), *toggle_val);
clutter_actor_set_position (button, clutter_actor_get_width (label) + 10, 0);
clutter_container_add (CLUTTER_CONTAINER (group), label, button, NULL);
g_signal_connect (button, "button-press-event", G_CALLBACK (on_toggle_click),
toggle_val);
return group;
}
G_MODULE_EXPORT int
test_cogl_tex_polygon_main (int argc, char *argv[])
{
ClutterActor *stage;
ClutterActor *coglbox;
ClutterActor *filtering_toggle;
ClutterActor *slicing_toggle;
ClutterActor *note;
ClutterTimeline *timeline;
ClutterColor blue = { 0x30, 0x30, 0xff, 0xff };
clutter_init (&argc, &argv);
/* Stage */
stage = clutter_stage_get_default ();
clutter_stage_set_color (CLUTTER_STAGE (stage), &blue);
clutter_actor_set_size (stage, 640, 480);
clutter_stage_set_title (CLUTTER_STAGE (stage), "Cogl Test");
/* Cogl Box */
coglbox = test_coglbox_new ();
clutter_container_add_actor (CLUTTER_CONTAINER (stage), coglbox);
/* Timeline for animation */
timeline = clutter_timeline_new (360, 60); /* num frames, fps */
g_object_set (timeline, "loop", TRUE, NULL); /* have it loop */
g_signal_connect (timeline, "new-frame", G_CALLBACK (frame_cb), coglbox);
clutter_timeline_start (timeline);
/* Labels for toggling settings */
slicing_toggle = make_toggle ("Texture slicing: ",
&(TEST_COGLBOX_GET_PRIVATE (coglbox)
->use_sliced));
clutter_actor_set_position (slicing_toggle, 0,
clutter_actor_get_height (stage)
- clutter_actor_get_height (slicing_toggle));
filtering_toggle = make_toggle ("Linear filtering: ",
&(TEST_COGLBOX_GET_PRIVATE (coglbox)
->use_linear_filtering));
clutter_actor_set_position (filtering_toggle, 0,
clutter_actor_get_y (slicing_toggle)
- clutter_actor_get_height (filtering_toggle));
note = clutter_text_new_with_text ("Sans 10", "<- Click to change");
clutter_actor_set_position (note,
clutter_actor_get_width (filtering_toggle) + 10,
(clutter_actor_get_height (stage)
+ clutter_actor_get_y (filtering_toggle)) / 2
- clutter_actor_get_height (note) / 2);
clutter_container_add (CLUTTER_CONTAINER (stage),
slicing_toggle,
filtering_toggle,
note,
NULL);
clutter_actor_show (stage);
clutter_main ();
return 0;
}
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