CoglHandle _st_create_shadow_material_from_actor (StShadow *shadow_spec, ClutterActor *actor) { CoglHandle shadow_material = COGL_INVALID_HANDLE; if (CLUTTER_IS_TEXTURE (actor)) { CoglHandle texture; texture = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (actor)); shadow_material = _st_create_shadow_material (shadow_spec, texture); } else { CoglHandle buffer, offscreen; ClutterActorBox box; CoglColor clear_color; float width, height; clutter_actor_get_allocation_box (actor, &box); clutter_actor_box_get_size (&box, &width, &height); if (width == 0 || height == 0) return COGL_INVALID_HANDLE; buffer = st_cogl_texture_new_with_size_wrapper (width, height, COGL_TEXTURE_NO_SLICING, COGL_PIXEL_FORMAT_ANY); if (buffer == COGL_INVALID_HANDLE) return COGL_INVALID_HANDLE; offscreen = cogl_offscreen_new_to_texture (buffer); if (offscreen == COGL_INVALID_HANDLE) { cogl_handle_unref (buffer); return COGL_INVALID_HANDLE; } cogl_color_set_from_4ub (&clear_color, 0, 0, 0, 0); cogl_push_framebuffer (offscreen); cogl_clear (&clear_color, COGL_BUFFER_BIT_COLOR); cogl_translate (-box.x1, -box.y1, 0); cogl_ortho (0, width, height, 0, 0, 1.0); clutter_actor_paint (actor); cogl_pop_framebuffer (); cogl_handle_unref (offscreen); shadow_material = _st_create_shadow_material (shadow_spec, buffer); cogl_handle_unref (buffer); } return shadow_material; }
static gboolean st_background_effect_pre_paint (ClutterEffect *effect) { StBackgroundEffect *self = ST_BACKGROUND_EFFECT (effect); ClutterEffectClass *parent_class; gfloat width; gfloat height; gfloat posx; gfloat posy; guchar *data; guint size; guint rowstride; glong new_time; gdouble time_used; ClutterActor *stage; gfloat stage_width; gfloat stage_height; if (self->bg_bumpmap == NULL) return FALSE; if (!clutter_actor_meta_get_enabled (CLUTTER_ACTOR_META (effect))) return FALSE; self->actor = clutter_actor_meta_get_actor (CLUTTER_ACTOR_META (effect)); if (self->actor == NULL) return FALSE; if (!clutter_feature_available (CLUTTER_FEATURE_SHADERS_GLSL)) { /* if we don't have support for GLSL shaders then we * forcibly disable the ActorMeta */ g_warning ("Unable to use the ShaderEffect: the graphics hardware " "or the current GL driver does not implement support " "for the GLSL shading language."); clutter_actor_meta_set_enabled (CLUTTER_ACTOR_META (effect), FALSE); return FALSE; } new_time = clock(); time_used = ((double) (new_time - self->old_time)*100) / (double) CLOCKS_PER_SEC; self->old_time = new_time; posx = 0.0f; posy = 0.0f; width = 0.0f; height = 0.0f; stage_width = 0.0f; stage_height = 0.0f; clutter_actor_get_transformed_position (self->actor, &posx, &posy); clutter_actor_get_transformed_size (self->actor, &width, &height); self->opacity = clutter_actor_get_paint_opacity (self->actor); stage = clutter_actor_get_stage (self->actor); clutter_actor_get_size (stage, &stage_width, &stage_height); if ((posx < 0) || (posy < 0) || ((posx + width) > stage_width) || ((posy + height) > stage_height)) return FALSE; if (( posx != self->posx_old) || ( posy != self->posy_old) || ( width != self->width_old) || ( height != self->height_old) || (time_used > 50.0)) { self->posx_old = posx; self->posy_old = posy; self->width_old = width; self->height_old = height; self->bg_posx_i = round(posx)+2; self->bg_posy_i = round(posy)+2; self->bg_width_i = round(width)-4; self->bg_height_i = round(height)-4; size = (self->bg_width_i) * (self->bg_height_i) * 4; if (((self->opacity == 0xff) || (self->bg_texture == NULL)) && (size > 400)) { rowstride = (self->bg_width_i) * 4; data = g_malloc (size); cogl_read_pixels (self->bg_posx_i, self->bg_posy_i, self->bg_width_i, self->bg_height_i, COGL_READ_PIXELS_COLOR_BUFFER, COGL_PIXEL_FORMAT_RGBA_8888_PRE, data); if (data != NULL) { if (self->bg_texture != NULL) { cogl_handle_unref (self->bg_texture); self->bg_texture = NULL; } self->bg_texture = st_cogl_texture_new_from_data_wrapper (self->bg_width_i, self->bg_height_i, COGL_TEXTURE_NO_SLICING, COGL_PIXEL_FORMAT_RGBA_8888_PRE, COGL_PIXEL_FORMAT_RGBA_8888_PRE, rowstride, data); g_free (data); } } } parent_class = CLUTTER_EFFECT_CLASS (st_background_effect_parent_class); if (parent_class->pre_paint (effect)) { ClutterOffscreenEffect *offscreen_effect = CLUTTER_OFFSCREEN_EFFECT (effect); CoglHandle fg_texture; fg_texture = clutter_offscreen_effect_get_texture (offscreen_effect); if (fg_texture != COGL_INVALID_HANDLE) { self->fg_width_i = cogl_texture_get_width (fg_texture); self->fg_height_i = cogl_texture_get_height (fg_texture); if ((self->bg_texture != NULL) && (self->opacity == 0xff)) { if (self->pixel_step_uniform0 > -1) { gfloat pixel_step[3]; pixel_step[0] = 1.0f / (self->bg_width_i); pixel_step[1] = 1.0f / (self->bg_height_i); pixel_step[2] = 0.0f; cogl_pipeline_set_uniform_float (self->pipeline0, self->pixel_step_uniform0, 3, 1, pixel_step); } if (self->BumpTex_uniform > -1) { cogl_pipeline_set_uniform_1i (self->pipeline0, self->BumpTex_uniform, 1); } if (self->bump_step_uniform > -1) { gfloat bump_step[2]; bump_step[0] = 1.0f / (self->bumptex_width_i); bump_step[1] = 1.0f / (self->bumptex_height_i); cogl_pipeline_set_uniform_float (self->pipeline0, self->bump_step_uniform, 2, 1, bump_step); } if (self->bg_sub_texture != NULL) { cogl_handle_unref (self->bg_sub_texture); self->bg_sub_texture = NULL; } self->bg_sub_texture = st_cogl_texture_new_with_size_wrapper (self->bg_width_i, self->bg_height_i, COGL_TEXTURE_NO_SLICING, COGL_PIXEL_FORMAT_RGBA_8888_PRE); cogl_pipeline_set_layer_texture (self->pipeline0, 0, self->bg_texture); if (self->pixel_step_uniform1 > -1) { gfloat pixel_step[3]; pixel_step[0] = 1.0f / (self->bg_width_i); pixel_step[1] = 1.0f / (self->bg_height_i); pixel_step[2] = 1.0f; cogl_pipeline_set_uniform_float (self->pipeline1, self->pixel_step_uniform1, 3, 1, pixel_step); } if (self->pixel_step_uniform2 > -1) { gfloat pixel_step[3]; pixel_step[0] = 1.0f / (self->fg_width_i); pixel_step[1] = 1.0f / (self->fg_height_i); pixel_step[2] = 2.0f; cogl_pipeline_set_uniform_float (self->pipeline3, self->pixel_step_uniform2, 3, 1, pixel_step); } } cogl_pipeline_set_layer_texture (self->pipeline2, 0, fg_texture); cogl_pipeline_set_layer_texture (self->pipeline3, 0, fg_texture); cogl_pipeline_set_layer_texture (self->pipeline4, 0, fg_texture); } return TRUE; } else { return FALSE; } }
static void st_drawing_area_paint (ClutterActor *self) { StDrawingArea *area = ST_DRAWING_AREA (self); StDrawingAreaPrivate *priv = area->priv; StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self)); ClutterActorBox allocation_box; ClutterActorBox content_box; int width, height; CoglColor color; guint8 paint_opacity; (CLUTTER_ACTOR_CLASS (st_drawing_area_parent_class))->paint (self); clutter_actor_get_allocation_box (self, &allocation_box); st_theme_node_get_content_box (theme_node, &allocation_box, &content_box); width = (int)(0.5 + content_box.x2 - content_box.x1); height = (int)(0.5 + content_box.y2 - content_box.y1); if (priv->material == COGL_INVALID_HANDLE) priv->material = cogl_material_new (); if (priv->texture != COGL_INVALID_HANDLE && (width != cogl_texture_get_width (priv->texture) || height != cogl_texture_get_height (priv->texture))) { cogl_handle_unref (priv->texture); priv->texture = COGL_INVALID_HANDLE; } if (width > 0 && height > 0) { if (priv->texture == COGL_INVALID_HANDLE) { priv->texture = st_cogl_texture_new_with_size_wrapper (width, height, COGL_TEXTURE_NONE, CLUTTER_CAIRO_FORMAT_ARGB32); priv->needs_repaint = TRUE; } if (priv->needs_repaint) { cairo_surface_t *surface; surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height); priv->context = cairo_create (surface); priv->in_repaint = TRUE; priv->needs_repaint = FALSE; g_signal_emit ((GObject*)area, st_drawing_area_signals[REPAINT], 0); priv->in_repaint = FALSE; cairo_destroy (priv->context); priv->context = NULL; cogl_texture_set_region (priv->texture, 0, 0, 0, 0, width, height, width, height, CLUTTER_CAIRO_FORMAT_ARGB32, cairo_image_surface_get_stride (surface), cairo_image_surface_get_data (surface)); cairo_surface_destroy (surface); } } cogl_material_set_layer (priv->material, 0, priv->texture); if (priv->texture) { paint_opacity = clutter_actor_get_paint_opacity (self); cogl_color_set_from_4ub (&color, paint_opacity, paint_opacity, paint_opacity, paint_opacity); cogl_material_set_color (priv->material, &color); cogl_set_source (priv->material); cogl_rectangle_with_texture_coords (content_box.x1, content_box.y1, width, height, 0.0f, 0.0f, 1.0f, 1.0f); } }