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effects: Delay the creation of the base pipeline

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Unconditionally creating CoglPipeline and CoglSnippets inside the class
initialization functions does not seem to be enough when dealing with
headless builds.

Our last resort is to lazily create the base pipeline the first time we
try to copy it, during the instance initialization.
This commit is contained in:
Emmanuele Bassi
2012-02-15 09:30:18 +00:00
parent d81ae9dd65
commit b1ff53d980
3 changed files with 60 additions and 56 deletions
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40
clutter/clutter-colorize-effect.c
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@ -227,7 +227,6 @@ clutter_colorize_effect_class_init (ClutterColorizeEffectClass *klass)
ClutterEffectClass *effect_class = CLUTTER_EFFECT_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
ClutterOffscreenEffectClass *offscreen_class;
CoglSnippet *snippet;
offscreen_class = CLUTTER_OFFSCREEN_EFFECT_CLASS (klass);
offscreen_class->paint_target = clutter_colorize_effect_paint_target;
@ -252,22 +251,7 @@ clutter_colorize_effect_class_init (ClutterColorizeEffectClass *klass)
&default_tint,
CLUTTER_PARAM_READWRITE);
g_object_class_install_properties (gobject_class,
PROP_LAST,
obj_props);
klass->base_pipeline = cogl_pipeline_new ();
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
colorize_glsl_declarations,
colorize_glsl_source);
cogl_pipeline_add_snippet (klass->base_pipeline, snippet);
cogl_object_unref (snippet);
cogl_pipeline_set_layer_null_texture (klass->base_pipeline,
0, /* layer number */
COGL_TEXTURE_TYPE_2D);
g_object_class_install_properties (gobject_class, PROP_LAST, obj_props);
}
static void
@ -292,10 +276,26 @@ update_tint_uniform (ClutterColorizeEffect *self)
static void
clutter_colorize_effect_init (ClutterColorizeEffect *self)
{
CoglPipeline *base_pipeline =
CLUTTER_COLORIZE_EFFECT_GET_CLASS (self)->base_pipeline;
ClutterColorizeEffectClass *klass = CLUTTER_COLORIZE_EFFECT_GET_CLASS (self);
self->pipeline = cogl_pipeline_copy (base_pipeline);
if (G_UNLIKELY (klass->base_pipeline == NULL))
{
CoglSnippet *snippet;
klass->base_pipeline = cogl_pipeline_new ();
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
colorize_glsl_declarations,
colorize_glsl_source);
cogl_pipeline_add_snippet (klass->base_pipeline, snippet);
cogl_object_unref (snippet);
cogl_pipeline_set_layer_null_texture (klass->base_pipeline,
0, /* layer number */
COGL_TEXTURE_TYPE_2D);
}
self->pipeline = cogl_pipeline_copy (klass->base_pipeline);
self->tint_uniform =
cogl_pipeline_get_uniform_location (self->pipeline, "tint");