[clutter] clutter-texture: Don't create a dummy texture

[Neil Roberts <nroberts src gnome org>]

commit 0e542aa30615353e4279e5ee3ef6430872584c4e
Author: Neil Roberts <neil linux intel com>
Date:   Thu Feb 9 17:22:24 2012 +0000

    clutter-texture: Don't create a dummy texture
    
    All of the pipelines used for ClutterTexture actors share a common
    pipeline ancestor created with cogl_pipeline_copy. Previously this
    ancestor had a dummy 1x1 texture attached to it so that it would end
    up with the same state as the child pipelines that will render with a
    texture. Cogl now has a mechanism to specify that a texture will be
    used with a pipeline layer without having to create an actual texture.
    This patch makes it use that to avoid having an unused texture.
    
    Reviewed-by: Emmanuele Bassi <ebassi linux intel com>

 clutter/clutter-texture.c |   11 +++++------
 1 files changed, 5 insertions(+), 6 deletions(-)
---
diff --git a/clutter/clutter-texture.c b/clutter/clutter-texture.c
index b8a8035..fc26517 100644
--- a/clutter/clutter-texture.c
+++ b/clutter/clutter-texture.c
@@ -1281,14 +1281,13 @@ clutter_texture_init (ClutterTexture *self)
 
   if (G_UNLIKELY (texture_template_material == NULL))
     {
-      CoglHandle dummy_tex;
-
-      dummy_tex = cogl_texture_new_with_size (1, 1, COGL_TEXTURE_NO_SLICING,
-                                              COGL_PIXEL_FORMAT_RGBA_8888_PRE);
+      CoglPipeline *pipeline;
 
       texture_template_material = cogl_material_new ();
-      cogl_material_set_layer (texture_template_material, 0, dummy_tex);
-      cogl_handle_unref (dummy_tex);
+      pipeline = COGL_PIPELINE (texture_template_material);
+      cogl_pipeline_set_layer_null_texture (pipeline,
+                                            0, /* layer_index */
+                                            COGL_TEXTURE_TYPE_2D);
     }
 
   g_assert (texture_template_material != NULL);