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2008-02-06 Matthew Allum <mallum@openedhand.com>

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* clutter/clutter-texture.c:
        Initial attempt at handling resizing/tranformed source textures.

        * clutter/pango/pangoclutter-render.c: (draw_glyph):
        Guards against freetype returning NULL bitmaps and
        thus causing device by zeros on NVIDIA drivers. (see ml)
This commit is contained in:
Matthew Allum
2008-02-06 14:39:04 +00:00
parent 49b189ecbb
commit ccc58efad4
3 changed files with 105 additions and 1 deletions
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90
clutter/clutter-texture.c
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@ -2148,6 +2148,58 @@ clutter_texture_set_area_from_rgb_data (ClutterTexture *texture,
return TRUE;
}
static void
on_fbo_source_size_change (GObject *object,
GParamSpec *param_spec,
ClutterTexture *texture)
{
ClutterTexturePrivate *priv = texture->priv;
guint w, h;
clutter_actor_get_abs_size (priv->fbo_source, &w, &h);
if (w != priv->width || h != priv->height)
{
cogl_offscreen_destroy (priv->fbo_handle);
/* FIXME: check we can actual handle new size */
texture_free_gl_resources (texture);
priv->width = w;
priv->height = h;
priv->tiles = g_new (COGLuint, 1);
/* FIXME: needs a cogl wrapper */
glGenTextures (1, priv->tiles);
cogl_texture_bind (priv->target_type, priv->tiles[0]);
cogl_texture_image_2d (priv->target_type,
CGL_RGBA,
w,
h,
priv->pixel_format,
priv->pixel_type,
NULL);
priv->fbo_handle = cogl_offscreen_create (priv->tiles[0]);
clutter_actor_set_size (CLUTTER_ACTOR(texture), w, h);
}
}
static void
on_fbo_parent_change (ClutterActor *actor,
ClutterActor *old_parent,
ClutterTexture *texture)
{
ClutterActor *parent = CLUTTER_ACTOR(texture);
while ((parent = clutter_actor_get_parent (parent)) != NULL)
if (parent == actor)
g_warning ("Offscreen texture is parent of source!");
}
/**
* clutter_texture_new_from_actor:
@ -2203,7 +2255,7 @@ clutter_texture_new_from_actor (ClutterActor *actor)
// printf("abs size is %ix%i\n", w, h);
/* Wont work with any kind of transform on actor */
clutter_actor_get_size (actor, &w, &h);
//clutter_actor_get_size (actor, &w, &h);
if (w == 0 || h == 0)
return NULL;
@ -2218,6 +2270,42 @@ clutter_texture_new_from_actor (ClutterActor *actor)
priv->fbo_source = g_object_ref(actor);
/* Connect up any signals which could change our underlying size */
g_signal_connect (actor,
"notify::width",
G_CALLBACK(on_fbo_source_size_change),
texture);
g_signal_connect (actor,
"notify::height",
G_CALLBACK(on_fbo_source_size_change),
texture);
g_signal_connect (actor,
"notify::scale-x",
G_CALLBACK(on_fbo_source_size_change),
texture);
g_signal_connect (actor,
"notify::scale-y",
G_CALLBACK(on_fbo_source_size_change),
texture);
g_signal_connect (actor,
"notify::rotation-angle-x",
G_CALLBACK(on_fbo_source_size_change),
texture);
g_signal_connect (actor,
"notify::rotation-angle-y",
G_CALLBACK(on_fbo_source_size_change),
texture);
g_signal_connect (actor,
"notify::rotation-angle-z",
G_CALLBACK(on_fbo_source_size_change),
texture);
/* And a warning if the source becomes a child of the texture */
g_signal_connect (actor,
"parent-set",
G_CALLBACK(on_fbo_parent_change),
texture);
priv->width = w;
priv->height = h;
priv->target_type = CGL_TEXTURE_RECTANGLE_ARB;