forked from AuroraMiddleware/gtk
broadway: Add node cache for text
This commit is contained in:
Alexander Larsson
parent
6cc96318c8
commit
cbbbf49043
@ -438,7 +438,7 @@ SwapNodes.prototype.handle_node = function(parent, offset_x, offset_y)
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{
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case 0: // TEXTURE
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{
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var rect = this.decode_irect();
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var rect = this.decode_rect();
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var texture_id = this.decode_uint32();
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var image = new Image();
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image.width = rect.width;
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@ -152,6 +152,197 @@ add_color_stop (GArray *nodes, const GskColorStop *stop)
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add_rgba (nodes, &stop->color);
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}
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static gboolean
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float_is_int32 (float f)
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{
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gint32 i = (gint32)f;
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float f2 = (float)i;
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return f2 == f;
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}
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static GHashTable *gsk_broadway_node_cache;
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typedef struct {
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GdkTexture *texture;
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GskRenderNode *node;
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float off_x;
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float off_y;
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} NodeCacheElement;
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static void
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node_cache_element_free (NodeCacheElement *element)
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{
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gsk_render_node_unref (element->node);
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g_free (element);
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}
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static guint
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glyph_info_hash (const PangoGlyphInfo *info)
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{
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return info->glyph ^
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info->geometry.width << 6 ^
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info->geometry.x_offset << 12 ^
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info->geometry.y_offset << 18 ^
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info->attr.is_cluster_start << 30;
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}
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static gboolean
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glyph_info_equal (const PangoGlyphInfo *a,
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const PangoGlyphInfo *b)
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{
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return
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a->glyph == b->glyph &&
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a->geometry.width == b->geometry.width &&
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a->geometry.x_offset == b->geometry.x_offset &&
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a->geometry.y_offset == b->geometry.y_offset &&
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a->attr.is_cluster_start == b->attr.is_cluster_start;
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}
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static guint
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node_cache_hash (GskRenderNode *node)
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{
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if (gsk_render_node_get_node_type (node) == GSK_TEXT_NODE &&
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float_is_int32 (gsk_text_node_get_x (node)) &&
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float_is_int32 (gsk_text_node_get_y (node)))
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{
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guint i;
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const PangoFont *font = gsk_text_node_peek_font (node);
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guint n_glyphs = gsk_text_node_get_num_glyphs (node);
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const PangoGlyphInfo *infos = gsk_text_node_peek_glyphs (node);
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const GdkRGBA *color = gsk_text_node_peek_color (node);
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guint h;
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h = g_direct_hash (font) ^ n_glyphs << 16 ^ gdk_rgba_hash (color);
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for (i = 0; i < n_glyphs; i++)
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h ^= glyph_info_hash (&infos[i]);
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return h;
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}
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return 0;
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}
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static gboolean
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node_cache_equal (GskRenderNode *a,
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GskRenderNode *b)
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{
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if (gsk_render_node_get_node_type (a) != gsk_render_node_get_node_type (b))
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return FALSE;
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if (gsk_render_node_get_node_type (a) == GSK_TEXT_NODE &&
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float_is_int32 (gsk_text_node_get_x (a)) &&
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float_is_int32 (gsk_text_node_get_y (a)) &&
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float_is_int32 (gsk_text_node_get_x (b)) &&
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float_is_int32 (gsk_text_node_get_y (b)))
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{
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const PangoFont *a_font = gsk_text_node_peek_font (a);
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guint a_n_glyphs = gsk_text_node_get_num_glyphs (a);
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const PangoGlyphInfo *a_infos = gsk_text_node_peek_glyphs (a);
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const GdkRGBA *a_color = gsk_text_node_peek_color (a);
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const PangoFont *b_font = gsk_text_node_peek_font (b);
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guint b_n_glyphs = gsk_text_node_get_num_glyphs (b);
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const PangoGlyphInfo *b_infos = gsk_text_node_peek_glyphs (b);
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const GdkRGBA *b_color = gsk_text_node_peek_color (a);
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guint i;
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if (a_font != b_font)
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return FALSE;
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if (a_n_glyphs != b_n_glyphs)
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return FALSE;
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for (i = 0; i < a_n_glyphs; i++)
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{
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if (!glyph_info_equal (&a_infos[i], &b_infos[i]))
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return FALSE;
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}
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if (!gdk_rgba_equal (a_color, b_color))
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return FALSE;
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return TRUE;
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}
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return FALSE;
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}
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static GdkTexture *
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node_cache_lookup (GskRenderNode *node,
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float *off_x, float *off_y)
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{
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NodeCacheElement *hit;
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if (gsk_broadway_node_cache == NULL)
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gsk_broadway_node_cache = g_hash_table_new_full ((GHashFunc)node_cache_hash,
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(GEqualFunc)node_cache_equal,
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NULL,
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(GDestroyNotify)node_cache_element_free);
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hit = g_hash_table_lookup (gsk_broadway_node_cache, node);
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if (hit)
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{
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*off_x = hit->off_x;
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*off_y = hit->off_y;
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return g_object_ref (hit->texture);
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}
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return NULL;
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}
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static void
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cached_texture_gone (gpointer data,
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GObject *where_the_object_was)
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{
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NodeCacheElement *element = data;
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g_hash_table_remove (gsk_broadway_node_cache, element->node);
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}
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static void
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node_cache_store (GskRenderNode *node,
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GdkTexture *texture,
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float off_x,
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float off_y)
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{
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if (gsk_render_node_get_node_type (node) == GSK_TEXT_NODE &&
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float_is_int32 (gsk_text_node_get_x (node)) &&
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float_is_int32 (gsk_text_node_get_y (node)))
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{
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NodeCacheElement *element = g_new0 (NodeCacheElement, 1);
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element->texture = texture;
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element->node = gsk_render_node_ref (node);
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element->off_x = off_x;
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element->off_y = off_y;
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g_object_weak_ref (G_OBJECT (texture), cached_texture_gone, element);
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g_hash_table_insert (gsk_broadway_node_cache, element->node, element);
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}
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}
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static GdkTexture *
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node_texture_fallback (GskRenderNode *node,
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float *off_x,
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float *off_y)
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{
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cairo_surface_t *surface;
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cairo_t *cr;
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int x = floorf (node->bounds.origin.x);
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int y = floorf (node->bounds.origin.y);
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int width = ceil (node->bounds.origin.x + node->bounds.size.width) - x;
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int height = ceil (node->bounds.origin.y + node->bounds.size.height) - y;
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GdkTexture *texture;
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
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cr = cairo_create (surface);
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cairo_translate (cr, -x, -y);
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gsk_render_node_draw (node, cr);
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cairo_destroy (cr);
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texture = gdk_texture_new_for_surface (surface);
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*off_x = x - node->bounds.origin.x;
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*off_y = y - node->bounds.origin.y;
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return texture;
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}
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static void
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gsk_broadway_renderer_add_node (GskRenderer *self,
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GArray *nodes,
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@ -159,10 +350,6 @@ gsk_broadway_renderer_add_node (GskRenderer *self,
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GskRenderNode *node)
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{
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GdkDisplay *display = gsk_renderer_get_display (self);
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int x = floorf (node->bounds.origin.x);
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int y = floorf (node->bounds.origin.y);
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int width = ceil (node->bounds.origin.x + node->bounds.size.width) - x;
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int height = ceil (node->bounds.origin.y + node->bounds.size.height) - y;
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switch (gsk_render_node_get_node_type (node))
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{
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@ -250,27 +437,28 @@ gsk_broadway_renderer_add_node (GskRenderer *self,
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}
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return;
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case GSK_TEXT_NODE:
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default:
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{
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cairo_surface_t *surface;
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GdkTexture *texture;
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guint32 texture_id;
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cairo_t *cr;
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float off_x = 0, off_y = 0;
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surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
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cr = cairo_create (surface);
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cairo_translate (cr, -x, -y);
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gsk_render_node_draw (node, cr);
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cairo_destroy (cr);
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texture = node_cache_lookup (node, &off_x, &off_y);
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if (!texture)
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{
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texture = node_texture_fallback (node, &off_x, &off_y);
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node_cache_store (node, texture, off_x, off_y);
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}
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texture = gdk_texture_new_for_surface (surface);
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g_ptr_array_add (node_textures, texture); /* Transfers ownership to node_textures */
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texture_id = gdk_broadway_display_ensure_texture (display, texture);
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add_uint32 (nodes, BROADWAY_NODE_TEXTURE);
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add_uint32 (nodes, x);
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add_uint32 (nodes, y);
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add_uint32 (nodes, width);
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add_uint32 (nodes, height);
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add_float (nodes, node->bounds.origin.x + off_x);
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add_float (nodes, node->bounds.origin.y + off_y);
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add_float (nodes, gdk_texture_get_width (texture));
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add_float (nodes, gdk_texture_get_height (texture));
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add_uint32 (nodes, texture_id);
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}
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return;
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