void
_st_paint_shadow_with_opacity (StShadow *shadow_spec,
CoglHandle shadow_material,
ClutterActorBox *box,
guint8 paint_opacity)
{
ClutterActorBox shadow_box;
CoglColor color;
g_return_if_fail (shadow_spec != NULL);
g_return_if_fail (shadow_material != COGL_INVALID_HANDLE);
st_shadow_get_box (shadow_spec, box, &shadow_box);
cogl_color_set_from_4ub (&color,
shadow_spec->color.red * paint_opacity / 255,
shadow_spec->color.green * paint_opacity / 255,
shadow_spec->color.blue * paint_opacity / 255,
shadow_spec->color.alpha * paint_opacity / 255);
cogl_color_premultiply (&color);
cogl_material_set_layer_combine_constant (shadow_material, 0, &color);
cogl_set_source (shadow_material);
cogl_rectangle_with_texture_coords (shadow_box.x1, shadow_box.y1,
shadow_box.x2, shadow_box.y2,
0, 0, 1, 1);
}
static void
mx_fade_effect_paint_target (ClutterOffscreenEffect *effect)
{
guint8 opacity;
CoglColor color;
ClutterActor *actor;
CoglMaterial *material = clutter_offscreen_effect_get_target (effect);
MxFadeEffect *self = MX_FADE_EFFECT (effect);
MxFadeEffectPrivate *priv = self->priv;
if (priv->update_vbo)
mx_fade_effect_update_vbo (self);
if (!priv->vbo || !priv->indices || !material)
return;
/* Set the blend string if the material has changed so we can blend with
* the paint opacity.
*/
if (material != priv->old_material)
{
GError *error = NULL;
priv->old_material = material;
if (!cogl_material_set_layer_combine (material, 1,
"RGBA = MODULATE(PREVIOUS,CONSTANT)", &error))
{
g_warning (G_STRLOC ": Error setting layer combine blend string: %s",
error->message);
g_error_free (error);
}
}
/* Set the layer-combine constant so the texture is blended with the paint
* opacity when painted.
*/
actor = clutter_actor_meta_get_actor (CLUTTER_ACTOR_META (effect));
opacity = clutter_actor_get_paint_opacity (actor);
cogl_color_init_from_4ub (&color, opacity, opacity, opacity, opacity);
cogl_material_set_layer_combine_constant (material, 1, &color);
/* Draw the texture */
cogl_set_source (material);
cogl_vertex_buffer_draw_elements (priv->vbo,
COGL_VERTICES_MODE_TRIANGLES,
priv->indices,
0,
(priv->n_quads * 4) - 1,
0,
priv->n_quads * 6);
}
void
st_theme_node_transition_paint (StThemeNodeTransition *transition,
ClutterActorBox *allocation,
guint8 paint_opacity)
{
StThemeNodeTransitionPrivate *priv = transition->priv;
CoglColor constant;
float tex_coords[] = {
0.0, 0.0, 1.0, 1.0,
0.0, 0.0, 1.0, 1.0,
};
g_return_if_fail (ST_IS_THEME_NODE (priv->old_theme_node));
g_return_if_fail (ST_IS_THEME_NODE (priv->new_theme_node));
if (!clutter_actor_box_equal (allocation, &priv->last_allocation))
priv->needs_setup = TRUE;
if (priv->needs_setup)
{
priv->last_allocation = *allocation;
calculate_offscreen_box (transition, allocation);
priv->needs_setup = !setup_framebuffers (transition, allocation);
if (priv->needs_setup) /* setting up framebuffers failed */
return;
}
cogl_color_set_from_4f (&constant, 0., 0., 0.,
clutter_timeline_get_progress (priv->timeline));
cogl_material_set_layer_combine_constant (priv->material, 1, &constant);
cogl_material_set_color4ub (priv->material,
paint_opacity, paint_opacity,
paint_opacity, paint_opacity);
cogl_set_source (priv->material);
cogl_rectangle_with_multitexture_coords (priv->offscreen_box.x1,
priv->offscreen_box.y1,
priv->offscreen_box.x2,
priv->offscreen_box.y2,
tex_coords, 8);
}
int
main (int argc, char **argv)
{
ClutterActor *stage = stage;
ClutterActor *side_box;
ClutterActor *button_box;
ClutterActor *box;
ClutterAnimation *anim;
MashLightSet *light_set;
MxStyle *style;
GError *error = NULL;
Data data;
int i;
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
return 1;
style = mx_style_get_default ();
if (!mx_style_load_from_file (style, "lights.css",
&error))
{
g_warning ("Error setting style: %s", error->message);
g_clear_error (&error);
}
stage = clutter_stage_get_default ();
clutter_actor_set_size (stage, 800, 600);
side_box = mx_table_new ();
clutter_actor_set_name (side_box, "side-box");
clutter_container_add_actor (CLUTTER_CONTAINER (stage), side_box);
clutter_actor_set_size (side_box, 300,
clutter_actor_get_height (stage));
clutter_actor_set_x (side_box,
clutter_actor_get_width (stage)
- clutter_actor_get_width (side_box));
button_box = mx_table_new ();
mx_table_add_actor (MX_TABLE (side_box), button_box, 0, 0);
data.notebook = mx_notebook_new ();
mx_table_add_actor (MX_TABLE (side_box), data.notebook, 1, 0);
data.model = mash_model_new_from_file (MASH_DATA_NONE,
argc > 1
? argv[1]
: "suzanne.ply",
&error);
if (data.model == NULL)
{
g_warning ("Error loading model: %s", error->message);
g_clear_error (&error);
return 1;
}
light_set = mash_light_set_new ();
box = clutter_box_new (clutter_fixed_layout_new ());
clutter_actor_set_size (data.model, 400, 400);
clutter_actor_set_position (data.model, 50.0, 100.0);
clutter_container_add_actor (CLUTTER_CONTAINER (box), data.model);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), box);
g_signal_connect_swapped (box, "paint",
G_CALLBACK (cogl_set_depth_test_enabled),
GINT_TO_POINTER (TRUE));
g_signal_connect_data (box, "paint",
G_CALLBACK (cogl_set_depth_test_enabled),
GINT_TO_POINTER (FALSE), NULL,
G_CONNECT_AFTER | G_CONNECT_SWAPPED);
data.light_marker_material = cogl_material_new ();
{
CoglColor color;
cogl_color_set_from_4ub (&color, 255, 0, 0, 255);
/* Use the layer state to ignore the vertex color from the shader so
that the light marker won't itself be lit */
cogl_material_set_layer_combine_constant (data.light_marker_material, 0,
&color);
cogl_material_set_layer_combine (data.light_marker_material, 0,
"RGBA = REPLACE(CONSTANT)",
NULL);
}
clutter_actor_set_rotation (data.model, CLUTTER_Y_AXIS,
0.0f,
clutter_actor_get_width (data.model) / 2.0f,
0.0f,
0.0f);
anim = clutter_actor_animate (data.model, CLUTTER_LINEAR, 3000,
"rotation-angle-y", 360.0f,
NULL);
clutter_animation_set_loop (anim, TRUE);
for (i = 0; i < N_LIGHTS; i++)
{
ClutterActor *table = mx_table_new ();
ClutterActor *button;
static ClutterActor *(* constructors[N_LIGHTS]) (void) =
{ mash_directional_light_new,
mash_point_light_new,
mash_spot_light_new };
static const ClutterColor black = { 0, 0, 0, 255 };
data.lights[i] = constructors[i] ();
button = mx_button_new_with_label (G_OBJECT_TYPE_NAME (data.lights[i]));
mx_table_add_actor (MX_TABLE (button_box), button, i, 0);
/* Default to disable all of the lights */
g_object_set (data.lights[i],
"ambient", &black,
"diffuse", &black,
"specular", &black,
NULL);
data.notebook_buttons[i] = button;
clutter_container_add_actor (CLUTTER_CONTAINER (box), data.lights[i]);
mash_light_set_add_light (light_set, MASH_LIGHT (data.lights[i]));
add_color_prop (table, "ambient light",
G_OBJECT (data.lights[i]), "ambient");
add_color_prop (table, "diffuse light",
G_OBJECT (data.lights[i]), "diffuse");
add_color_prop (table, "specular light",
G_OBJECT (data.lights[i]), "specular");
if (MASH_IS_POINT_LIGHT (data.lights[i]))
{
add_float_prop (table, "constant attenuation",
G_OBJECT (data.lights[i]), "constant-attenuation",
0.0f, 10.0f);
add_float_prop (table, "linear attenuation",
G_OBJECT (data.lights[i]), "linear-attenuation",
0.0f, 10.0f);
add_float_prop (table, "quadratic attenuation",
G_OBJECT (data.lights[i]), "quadratic-attenuation",
0.0f, 10.0f);
}
if (MASH_IS_SPOT_LIGHT (data.lights[i]))
{
clutter_actor_set_x (data.lights[i], 250);
add_float_prop (table, "spot cutoff",
G_OBJECT (data.lights[i]), "spot-cutoff",
0.0f, 90.0f);
add_float_prop (table, "spot exponent",
G_OBJECT (data.lights[i]), "spot-exponent",
0.0f, 128.0f);
}
clutter_container_add_actor (CLUTTER_CONTAINER (data.notebook), table);
data.notebook_pages[i] = table;
}
{
ClutterActor *button;
ClutterActor *table;
CoglHandle material;
float maximum_shininess;
material = mash_model_get_pipeline (MASH_MODEL (data.model));
/* Before version 1.3.10 on the 1.3 branch and 1.2.14 on the 1.2
branch Cogl would remap the shininess property to the range
[0,1]. After this it is just a value greater or equal to zero
(but GL imposes a limit of 128.0) */
if (clutter_check_version (1, 3, 9)
|| (clutter_major_version == 1
&& clutter_minor_version == 2
&& clutter_micro_version >= 13))
maximum_shininess = 128.0f;
else
maximum_shininess = 1.0f;
cogl_material_set_shininess (material, maximum_shininess);
button = mx_button_new_with_label ("Material");
data.notebook_buttons[i] = button;
mx_table_add_actor (MX_TABLE (button_box), button, i, 0);
table = mx_table_new ();
data.notebook_pages[i] = table;
clutter_container_add_actor (CLUTTER_CONTAINER (data.notebook), table);
add_material_color_prop (table, "emission", material,
cogl_material_set_emission,
cogl_material_get_emission);
add_material_color_prop (table, "diffuse", material,
cogl_material_set_diffuse,
cogl_material_get_diffuse);
add_material_color_prop (table, "ambient", material,
cogl_material_set_ambient,
cogl_material_get_ambient);
add_material_color_prop (table, "specular", material,
cogl_material_set_specular,
cogl_material_get_specular);
add_material_float_prop (table, "shininess", material,
0.0f, maximum_shininess,
cogl_material_set_shininess,
cogl_material_get_shininess);
}
mash_model_set_light_set (MASH_MODEL (data.model), light_set);
g_object_unref (light_set);
for (i = 0; i < N_PAGES; i++)
{
g_signal_connect (data.notebook_buttons[i], "notify::toggled",
G_CALLBACK (notebook_button_cb), &data);
mx_button_set_is_toggle (MX_BUTTON (data.notebook_buttons[i]), TRUE);
}
mx_button_set_toggled (MX_BUTTON (data.notebook_buttons[0]), TRUE);
g_signal_connect (stage, "motion-event",
G_CALLBACK (motion_event_cb),
&data);
clutter_actor_show (stage);
clutter_main ();
cogl_handle_unref (data.light_marker_material);
return 0;
}
