589c8d9579
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.
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
#include <glib.h>
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#include <clutter/clutter.h>
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#include <string.h>
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#include "test-conform-common.h"
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static CoglHandle
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make_texture (void)
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{
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guint32 *data = g_malloc (100 * 100 * 4);
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int x;
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int y;
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for (y = 0; y < 100; y ++)
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for (x = 0; x < 100; x++)
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{
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if (x < 50 && y < 50)
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data[y * 100 + x] = 0xff00ff00;
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else
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data[y * 100 + x] = 0xff00ffff;
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}
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return cogl_texture_new_from_data (100,
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100,
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COGL_TEXTURE_NONE,
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COGL_PIXEL_FORMAT_ARGB_8888,
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COGL_PIXEL_FORMAT_ARGB_8888,
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400,
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(guchar *)data);
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}
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void
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test_texture_pick_with_alpha (TestConformSimpleFixture *fixture,
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gconstpointer data)
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{
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ClutterTexture *tex = CLUTTER_TEXTURE (clutter_texture_new ());
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ClutterStage *stage = CLUTTER_STAGE (clutter_stage_get_default ());
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ClutterActor *actor;
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clutter_texture_set_cogl_texture (tex, make_texture ());
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clutter_container_add_actor (CLUTTER_CONTAINER (stage), CLUTTER_ACTOR (tex));
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clutter_actor_show (CLUTTER_ACTOR (stage));
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if (g_test_verbose ())
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{
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g_print ("\nstage = %p\n", stage);
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g_print ("texture = %p\n\n", tex);
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}
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clutter_texture_set_pick_with_alpha (tex, TRUE);
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if (g_test_verbose ())
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g_print ("Testing with pick-with-alpha enabled:\n");
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/* This should fall through and hit the stage: */
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actor = clutter_stage_get_actor_at_pos (stage, CLUTTER_PICK_ALL, 10, 10);
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if (g_test_verbose ())
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g_print ("actor @ (10, 10) = %p\n", actor);
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g_assert (actor == CLUTTER_ACTOR (stage));
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/* The rest should hit the texture */
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actor = clutter_stage_get_actor_at_pos (stage, CLUTTER_PICK_ALL, 90, 10);
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if (g_test_verbose ())
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g_print ("actor @ (90, 10) = %p\n", actor);
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g_assert (actor == CLUTTER_ACTOR (tex));
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actor = clutter_stage_get_actor_at_pos (stage, CLUTTER_PICK_ALL, 90, 90);
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if (g_test_verbose ())
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g_print ("actor @ (90, 90) = %p\n", actor);
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g_assert (actor == CLUTTER_ACTOR (tex));
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actor = clutter_stage_get_actor_at_pos (stage, CLUTTER_PICK_ALL, 10, 90);
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if (g_test_verbose ())
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g_print ("actor @ (10, 90) = %p\n", actor);
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g_assert (actor == CLUTTER_ACTOR (tex));
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clutter_texture_set_pick_with_alpha (tex, FALSE);
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if (g_test_verbose ())
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g_print ("Testing with pick-with-alpha disabled:\n");
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actor = clutter_stage_get_actor_at_pos (stage, CLUTTER_PICK_ALL, 10, 10);
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if (g_test_verbose ())
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g_print ("actor @ (10, 10) = %p\n", actor);
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g_assert (actor == CLUTTER_ACTOR (tex));
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clutter_actor_destroy (CLUTTER_ACTOR (tex));
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if (g_test_verbose ())
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g_print ("OK\n");
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}
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