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blur-effect: Fix loop unrolling

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The box blur shader was not sampling all the points for producing the
desired effect.
This commit is contained in:
Emmanuele Bassi 2010-06-07 15:45:24 +01:00
parent eb3017df7e
commit 8583986e16
2 changed files with 14 additions and 6 deletions
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7
clutter/clutter-blur-effect.c
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@ -72,12 +72,13 @@ static const gchar *box_blur_glsl_shader =
" vec4 color = gl_Color * texture2D (tex, vec2 (gl_TexCoord[0].xy));\n"
" float count = 1.0;\n"
" color += get_rgba_rel (tex, -x_step, -y_step); count++;\n"
" color += get_rgba_rel (tex, -x_step, 0.0); count++;\n"
" color += get_rgba_rel (tex, 0.0, -y_step); count++;\n"
" color += get_rgba_rel (tex, 0.0, 0.0); count++;\n"
" color += get_rgba_rel (tex, 0.0, y_step); count++;\n"
" color += get_rgba_rel (tex, x_step, -y_step); count++;\n"
" color += get_rgba_rel (tex, -x_step, 0.0); count++;\n"
" color += get_rgba_rel (tex, 0.0, 0.0); count++;\n"
" color += get_rgba_rel (tex, x_step, 0.0); count++;\n"
" color += get_rgba_rel (tex, -x_step, y_step); count++;\n"
" color += get_rgba_rel (tex, 0.0, y_step); count++;\n"
" color += get_rgba_rel (tex, x_step, y_step); count++;\n"
" gl_FragColor = color / count;\n"
"}";

13
tests/interactive/test-rotate.c
View File

@ -14,8 +14,9 @@ test_rotate_main (int argc, char *argv[])
ClutterAlpha *alpha;
ClutterBehaviour *r_behave;
ClutterActor *stage;
ClutterActor *hand, *label;
ClutterActor *hand, *label, *rect;
ClutterColor stage_color = { 0xcc, 0xcc, 0xcc, 0xff };
ClutterColor rect_color;
gchar *file;
clutter_init (&argc, &argv);
@ -37,8 +38,13 @@ test_rotate_main (int argc, char *argv[])
g_free (file);
clutter_color_from_string (&rect_color, "#ce5c00ff");
rect = clutter_rectangle_new_with_color (&rect_color);
clutter_actor_add_effect_with_name (rect, "blur", clutter_blur_effect_new ());
clutter_actor_set_position (rect, 340, 140);
clutter_actor_set_size (rect, 150, 150);
clutter_actor_set_position (hand, 240, 140);
clutter_actor_show (hand);
clutter_actor_add_effect_with_name (hand, "desaturate", clutter_desaturate_effect_new (0.75));
clutter_actor_add_effect_with_name (hand, "blur", clutter_blur_effect_new ());
clutter_actor_animate_with_timeline (hand, CLUTTER_LINEAR, timeline,
@ -53,7 +59,7 @@ test_rotate_main (int argc, char *argv[])
clutter_actor_set_position (label, 150, 150);
clutter_actor_set_size (label, 500, 100);
clutter_container_add (CLUTTER_CONTAINER (stage), hand, label, NULL);
clutter_container_add (CLUTTER_CONTAINER (stage), rect, hand, label, NULL);
/* Set an alpha func to power behaviour */
alpha = clutter_alpha_new_full (timeline, CLUTTER_LINEAR);
@ -70,6 +76,7 @@ test_rotate_main (int argc, char *argv[])
/* Apply it to our actor */
clutter_behaviour_apply (r_behave, hand);
clutter_behaviour_apply (r_behave, label);
clutter_behaviour_apply (r_behave, rect);
/* start the timeline and thus the animations */
clutter_timeline_start (timeline);