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background: share snippets between pipelines

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Cogl automatically caches pipelines with no eviction policy,
so we need to make sure to reuse snippets to prevent
identical pipelines from getting cached separately.

https://bugzilla.gnome.org/show_bug.cgi?id=696157
This commit is contained in:
Ray Strode 2013-03-25 13:29:36 -04:00
parent 0e58906194
commit 47cf63bebe
1 changed files with 8 additions and 4 deletions
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12
src/compositor/meta-background.c
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@ -99,7 +99,6 @@ G_DEFINE_TYPE_WITH_CODE (MetaBackground, meta_background, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_CONTENT,
clutter_content_iface_init))
static gboolean
meta_background_get_preferred_size (ClutterContent *content,
gfloat *width,
@ -535,13 +534,18 @@ static void
add_vignette (MetaBackground *self)
{
MetaBackgroundPrivate *priv = self->priv;
CoglSnippet *snippet;
static CoglSnippet *snippet = NULL;
ensure_pipeline (self);
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT, FRAGMENT_SHADER_DECLARATIONS, VIGNETTE_CODE);
/* Cogl automatically caches pipelines with no eviction policy,
* so we need to prevent identical pipelines from getting cached
* separately, by reusing the same fragement shader snippet.
*/
if (snippet == NULL)
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT, FRAGMENT_SHADER_DECLARATIONS, VIGNETTE_CODE);
cogl_pipeline_add_snippet (priv->pipeline, snippet);
cogl_object_unref (snippet);
cogl_pipeline_set_uniform_1f (priv->pipeline,
cogl_pipeline_get_uniform_location (priv->pipeline,