[gnome-shell/gbsneto/graphene-matrix] Replace CoglMatrix by graphene_matrix_t




commit 8eb88605ffc808d227f36f58069e1450fe7ba129
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Sep 11 15:49:29 2020 -0300

    Replace CoglMatrix by graphene_matrix_t
    
    Replace both the types, and the cogl_matrix_* API calls
    with the corresponding graphene_matrix_* ones.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1436

 src/shell-blur-effect.c | 18 +++++++-----------
 src/st/st-viewport.c    | 16 ++++++----------
 2 files changed, 13 insertions(+), 21 deletions(-)
---
diff --git a/src/shell-blur-effect.c b/src/shell-blur-effect.c
index 1bdb4caa19..7647e1530f 100644
--- a/src/shell-blur-effect.c
+++ b/src/shell-blur-effect.c
@@ -330,17 +330,13 @@ setup_projection_matrix (CoglFramebuffer *framebuffer,
                          float            width,
                          float            height)
 {
-  CoglMatrix projection;
-
-  cogl_matrix_init_identity (&projection);
-  cogl_matrix_scale (&projection,
-                     2.0 / width,
-                     -2.0 / height,
-                     1.f);
-  cogl_matrix_translate (&projection,
-                         -width / 2.0,
-                         -height / 2.0,
-                         0);
+  graphene_matrix_t projection;
+
+  graphene_matrix_init_translate (&projection,
+                                  &GRAPHENE_POINT3D_INIT (-width / 2.0,
+                                                          -height / 2.0,
+                                                          0.f));
+  graphene_matrix_scale (&projection, 2.0 / width, -2.0 / height, 1.f);
 
   cogl_framebuffer_set_projection_matrix (framebuffer, &projection);
 }
diff --git a/src/st/st-viewport.c b/src/st/st-viewport.c
index 0eb1868ab9..c52d141855 100644
--- a/src/st/st-viewport.c
+++ b/src/st/st-viewport.c
@@ -325,28 +325,24 @@ get_hadjustment_value (StViewport *viewport)
 }
 
 static void
-st_viewport_apply_transform (ClutterActor *actor,
-                             CoglMatrix   *matrix)
+st_viewport_apply_transform (ClutterActor      *actor,
+                             graphene_matrix_t *matrix)
 {
   StViewport *viewport = ST_VIEWPORT (actor);
   StViewportPrivate *priv = st_viewport_get_instance_private (viewport);
   ClutterActorClass *parent_class =
     CLUTTER_ACTOR_CLASS (st_viewport_parent_class);
-  double x, y;
+  graphene_point3d_t p = GRAPHENE_POINT3D_INIT_ZERO;
 
   parent_class->apply_transform (actor, matrix);
 
   if (priv->hadjustment)
-    x = get_hadjustment_value (viewport);
-  else
-    x = 0;
+    p.x = -get_hadjustment_value (viewport);
 
   if (priv->vadjustment)
-    y = st_adjustment_get_value (priv->vadjustment);
-  else
-    y = 0;
+    p.y = -st_adjustment_get_value (priv->vadjustment);
 
-  cogl_matrix_translate (matrix, (int) -x, (int) -y, 0);
+  graphene_matrix_translate (matrix, &p);
 }
 
 /* If we are translated, then we need to translate back before chaining


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