[gnome-shell/gbsneto/explicit-framebuffer-preparation: 1/3] theme-node-transition: Receive a CoglFramebuffer

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit a2f27a94099d3e4f9ddc7c391e3b19cbd6492f5d
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Oct 5 22:28:10 2018 -0300

    theme-node-transition: Receive a CoglFramebuffer
    
    This is in preparation for a future where only explicit frambuffer
    APIs are available, i.e., cogl_get_draw_framebuffer() does not
    exist.
    
    There is absolutely no functional changes in this patch (nor the
    following ones in this series), only rearrangements so that various
    functions receive a CoglFramebuffer instead of using the draw
    framebuffer.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/283

 src/st/st-theme-node-transition.c | 5 +++--
 src/st/st-theme-node-transition.h | 1 +
 src/st/st-widget.c                | 5 ++++-
 3 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/src/st/st-theme-node-transition.c b/src/st/st-theme-node-transition.c
index 62f0ef517..294c7e664 100644
--- a/src/st/st-theme-node-transition.c
+++ b/src/st/st-theme-node-transition.c
@@ -337,11 +337,11 @@ setup_framebuffers (StThemeNodeTransition *transition,
 
 void
 st_theme_node_transition_paint (StThemeNodeTransition *transition,
+                                CoglFramebuffer       *framebuffer,
                                 ClutterActorBox       *allocation,
                                 guint8                 paint_opacity)
 {
   StThemeNodeTransitionPrivate *priv = transition->priv;
-  CoglFramebuffer *fb = cogl_get_draw_framebuffer ();
 
   CoglColor constant;
   float tex_coords[] = {
@@ -374,7 +374,8 @@ st_theme_node_transition_paint (StThemeNodeTransition *transition,
                               paint_opacity, paint_opacity,
                               paint_opacity, paint_opacity);
 
-  cogl_framebuffer_draw_multitextured_rectangle (fb, priv->material,
+  cogl_framebuffer_draw_multitextured_rectangle (framebuffer,
+                                                 priv->material,
                                                  priv->offscreen_box.x1,
                                                  priv->offscreen_box.y1,
                                                  priv->offscreen_box.x2,
diff --git a/src/st/st-theme-node-transition.h b/src/st/st-theme-node-transition.h
index 8762b6d31..6f45ab834 100644
--- a/src/st/st-theme-node-transition.h
+++ b/src/st/st-theme-node-transition.h
@@ -41,6 +41,7 @@ void  st_theme_node_transition_update   (StThemeNodeTransition *transition,
                                          StThemeNode           *new_node);
 
 void  st_theme_node_transition_paint    (StThemeNodeTransition *transition,
+                                         CoglFramebuffer       *framebuffer,
                                          ClutterActorBox       *allocation,
                                          guint8                 paint_opacity);
 
diff --git a/src/st/st-widget.c b/src/st/st-widget.c
index 7c39b3585..38a078c02 100644
--- a/src/st/st-widget.c
+++ b/src/st/st-widget.c
@@ -414,10 +414,12 @@ void
 st_widget_paint_background (StWidget *widget)
 {
   StWidgetPrivate *priv = st_widget_get_instance_private (widget);
+  CoglFramebuffer *framebuffer;
   StThemeNode *theme_node;
   ClutterActorBox allocation;
   guint8 opacity;
 
+  framebuffer = cogl_get_draw_framebuffer ();
   theme_node = st_widget_get_theme_node (widget);
 
   clutter_actor_get_allocation_box (CLUTTER_ACTOR (widget), &allocation);
@@ -426,12 +428,13 @@ st_widget_paint_background (StWidget *widget)
 
   if (priv->transition_animation)
     st_theme_node_transition_paint (priv->transition_animation,
+                                    framebuffer,
                                     &allocation,
                                     opacity);
   else
     st_theme_node_paint (theme_node,
                          current_paint_state (widget),
-                         cogl_get_draw_framebuffer (),
+                         framebuffer,
                          &allocation,
                          opacity);
 }