[clutter] Do not check for features inside class initialization

[Emmanuele Bassi <ebassi src gnome org>]

commit c1a57e537b07e0036cec491044d92b5becdbc4b8
Author: Emmanuele Bassi <ebassi linux intel com>
Date:   Tue Feb 14 17:14:25 2012 +0000

    Do not check for features inside class initialization
    
    The class initialization function may be called when Clutter hasn't been
    fully initialized â for instance, when scanning the source with gtk-doc
    or with the introspection scanner.

 clutter/clutter-blur-effect.c       |   19 +++++++------------
 clutter/clutter-colorize-effect.c   |   16 ++++++----------
 clutter/clutter-desaturate-effect.c |   16 ++++++----------
 3 files changed, 19 insertions(+), 32 deletions(-)
---
diff --git a/clutter/clutter-blur-effect.c b/clutter/clutter-blur-effect.c
index a7a7c09..bed7360 100644
--- a/clutter/clutter-blur-effect.c
+++ b/clutter/clutter-blur-effect.c
@@ -221,6 +221,7 @@ clutter_blur_effect_class_init (ClutterBlurEffectClass *klass)
   ClutterEffectClass *effect_class = CLUTTER_EFFECT_CLASS (klass);
   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
   ClutterOffscreenEffectClass *offscreen_class;
+  CoglSnippet *snippet;
 
   gobject_class->dispose = clutter_blur_effect_dispose;
 
@@ -232,18 +233,12 @@ clutter_blur_effect_class_init (ClutterBlurEffectClass *klass)
 
   klass->base_pipeline = cogl_pipeline_new ();
 
-  if (clutter_feature_available (CLUTTER_FEATURE_SHADERS_GLSL))
-    {
-      CoglSnippet *snippet;
-
-      snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_TEXTURE_LOOKUP,
-                                  box_blur_glsl_declarations,
-                                  NULL);
-      cogl_snippet_set_replace (snippet,
-                                box_blur_glsl_shader);
-      cogl_pipeline_add_layer_snippet (klass->base_pipeline, 0, snippet);
-      cogl_object_unref (snippet);
-    }
+  snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_TEXTURE_LOOKUP,
+                              box_blur_glsl_declarations,
+                              NULL);
+  cogl_snippet_set_replace (snippet, box_blur_glsl_shader);
+  cogl_pipeline_add_layer_snippet (klass->base_pipeline, 0, snippet);
+  cogl_object_unref (snippet);
 
   cogl_pipeline_set_layer_null_texture (klass->base_pipeline,
                                         0, /* layer number */
diff --git a/clutter/clutter-colorize-effect.c b/clutter/clutter-colorize-effect.c
index 2ccd068..82b1f47 100644
--- a/clutter/clutter-colorize-effect.c
+++ b/clutter/clutter-colorize-effect.c
@@ -227,6 +227,7 @@ 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;
@@ -258,16 +259,11 @@ clutter_colorize_effect_class_init (ClutterColorizeEffectClass *klass)
 
   klass->base_pipeline = cogl_pipeline_new ();
 
-  if (clutter_feature_available (CLUTTER_FEATURE_SHADERS_GLSL))
-    {
-      CoglSnippet *snippet;
-
-      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);
-    }
+  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 */
diff --git a/clutter/clutter-desaturate-effect.c b/clutter/clutter-desaturate-effect.c
index 9bdb70a..fc3c263 100644
--- a/clutter/clutter-desaturate-effect.c
+++ b/clutter/clutter-desaturate-effect.c
@@ -249,6 +249,7 @@ clutter_desaturate_effect_class_init (ClutterDesaturateEffectClass *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_desaturate_effect_paint_target;
@@ -281,16 +282,11 @@ clutter_desaturate_effect_class_init (ClutterDesaturateEffectClass *klass)
 
   klass->base_pipeline = cogl_pipeline_new ();
 
-  if (clutter_feature_available (CLUTTER_FEATURE_SHADERS_GLSL))
-    {
-      CoglSnippet *snippet;
-
-      snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
-                                  desaturate_glsl_declarations,
-                                  desaturate_glsl_source);
-      cogl_pipeline_add_snippet (klass->base_pipeline, snippet);
-      cogl_object_unref (snippet);
-    }
+  snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_FRAGMENT,
+                              desaturate_glsl_declarations,
+                              desaturate_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 */