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mutter/clutter/tests/conform/texture.c

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conformance: Add more tests Add back some deprecated and general purpose API tests. These are the ones that were written already pretty much conforming to the GTest API and style, and thus require minimal porting.
2013-12-12 10:05:16 -05:00
#define CLUTTER_DISABLE_DEPRECATION_WARNINGS
[texture] Support picking textures according to their alpha channel This adds a boolean "pick-with-alpha" property to ClutterTexture and when true, it will use the textures alpha channel to define the actors shape when picking. Users should be aware that it's a bit more expensive to pick textures like this (so probably best not to blindly enable it on *all* your textures) since it implies rasterizing the texture during picking whereas we would otherwise just send a solid filled quad to the GPU. It will also interrupt the internal batching of geometry for pick renders which can otherwise often be done in a single draw call.
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#include <clutter/clutter.h>
#include <string.h>
static CoglHandle
make_texture (void)
{
guint32 *data = g_malloc (100 * 100 * 4);
int x;
int y;
for (y = 0; y < 100; y ++)
for (x = 0; x < 100; x++)
{
if (x < 50 && y < 50)
data[y * 100 + x] = 0xff00ff00;
else
data[y * 100 + x] = 0xff00ffff;
}
return cogl_texture_new_from_data (100,
100,
COGL_TEXTURE_NONE,
COGL_PIXEL_FORMAT_ARGB_8888,
COGL_PIXEL_FORMAT_ARGB_8888,
400,
(guchar *)data);
}
conformance: Add more tests Add back some deprecated and general purpose API tests. These are the ones that were written already pretty much conforming to the GTest API and style, and thus require minimal porting.
2013-12-12 10:05:16 -05:00
static void
texture_pick_with_alpha (void)
[texture] Support picking textures according to their alpha channel This adds a boolean "pick-with-alpha" property to ClutterTexture and when true, it will use the textures alpha channel to define the actors shape when picking. Users should be aware that it's a bit more expensive to pick textures like this (so probably best not to blindly enable it on *all* your textures) since it implies rasterizing the texture during picking whereas we would otherwise just send a solid filled quad to the GPU. It will also interrupt the internal batching of geometry for pick renders which can otherwise often be done in a single draw call.
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{
ClutterTexture *tex = CLUTTER_TEXTURE (clutter_texture_new ());
conformance: Add more tests Add back some deprecated and general purpose API tests. These are the ones that were written already pretty much conforming to the GTest API and style, and thus require minimal porting.
2013-12-12 10:05:16 -05:00
ClutterStage *stage = CLUTTER_STAGE (clutter_test_get_stage ());
[texture] Support picking textures according to their alpha channel This adds a boolean "pick-with-alpha" property to ClutterTexture and when true, it will use the textures alpha channel to define the actors shape when picking. Users should be aware that it's a bit more expensive to pick textures like this (so probably best not to blindly enable it on *all* your textures) since it implies rasterizing the texture during picking whereas we would otherwise just send a solid filled quad to the GPU. It will also interrupt the internal batching of geometry for pick renders which can otherwise often be done in a single draw call.
2009-09-25 14:14:40 -04:00
ClutterActor *actor;
clutter_texture_set_cogl_texture (tex, make_texture ());
conformance: Add more tests Add back some deprecated and general purpose API tests. These are the ones that were written already pretty much conforming to the GTest API and style, and thus require minimal porting.
2013-12-12 10:05:16 -05:00
clutter_actor_add_child (CLUTTER_ACTOR (stage), CLUTTER_ACTOR (tex));
[texture] Support picking textures according to their alpha channel This adds a boolean "pick-with-alpha" property to ClutterTexture and when true, it will use the textures alpha channel to define the actors shape when picking. Users should be aware that it's a bit more expensive to pick textures like this (so probably best not to blindly enable it on *all* your textures) since it implies rasterizing the texture during picking whereas we would otherwise just send a solid filled quad to the GPU. It will also interrupt the internal batching of geometry for pick renders which can otherwise often be done in a single draw call.
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clutter_actor_show (CLUTTER_ACTOR (stage));
if (g_test_verbose ())
{
g_print ("\nstage = %p\n", stage);
g_print ("texture = %p\n\n", tex);
}
clutter_texture_set_pick_with_alpha (tex, TRUE);
if (g_test_verbose ())
g_print ("Testing with pick-with-alpha enabled:\n");
/* This should fall through and hit the stage: */
actor = clutter_stage_get_actor_at_pos (stage, CLUTTER_PICK_ALL, 10, 10);
if (g_test_verbose ())
g_print ("actor @ (10, 10) = %p\n", actor);
g_assert (actor == CLUTTER_ACTOR (stage));
/* The rest should hit the texture */
actor = clutter_stage_get_actor_at_pos (stage, CLUTTER_PICK_ALL, 90, 10);
if (g_test_verbose ())
g_print ("actor @ (90, 10) = %p\n", actor);
g_assert (actor == CLUTTER_ACTOR (tex));
actor = clutter_stage_get_actor_at_pos (stage, CLUTTER_PICK_ALL, 90, 90);
if (g_test_verbose ())
g_print ("actor @ (90, 90) = %p\n", actor);
g_assert (actor == CLUTTER_ACTOR (tex));
actor = clutter_stage_get_actor_at_pos (stage, CLUTTER_PICK_ALL, 10, 90);
if (g_test_verbose ())
g_print ("actor @ (10, 90) = %p\n", actor);
g_assert (actor == CLUTTER_ACTOR (tex));
clutter_texture_set_pick_with_alpha (tex, FALSE);
if (g_test_verbose ())
g_print ("Testing with pick-with-alpha disabled:\n");
actor = clutter_stage_get_actor_at_pos (stage, CLUTTER_PICK_ALL, 10, 10);
if (g_test_verbose ())
g_print ("actor @ (10, 10) = %p\n", actor);
g_assert (actor == CLUTTER_ACTOR (tex));
}
conformance: Add more tests Add back some deprecated and general purpose API tests. These are the ones that were written already pretty much conforming to the GTest API and style, and thus require minimal porting.
2013-12-12 10:05:16 -05:00
CLUTTER_TEST_SUITE (
CLUTTER_TEST_UNIT ("/texture/pick-with-alpha", texture_pick_with_alpha)
)
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