[gnome-photos] gegl-gtk-view-helper: Optimize blitting

[Debarshi Ray <debarshir src gnome org>]

commit 04d201fff34fe37d27c22583be37ff558bb91f2d
Author: Debarshi Ray <debarshir gnome org>
Date:   Fri Jan 23 12:40:41 2015 +0100

    gegl-gtk-view-helper: Optimize blitting
    
    Use Babl's cairo-ARGB32 format. It has some optimizations and is
    noticeably faster than the equivalent B'aG'aR'aA u8.
    
    From gegl-gtk commit 3d28897caf9ee0bd091ea93df5a2a00fe4355302

 src/gegl-gtk-view-helper.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gegl-gtk-view-helper.c b/src/gegl-gtk-view-helper.c
index 0552478..99db47e 100644
--- a/src/gegl-gtk-view-helper.c
+++ b/src/gegl-gtk-view-helper.c
@@ -260,7 +260,7 @@ view_helper_draw(ViewHelper *self, cairo_t *cr, GdkRectangle *rect)
     gegl_node_blit(self->node,
                    self->scale,
                    &roi,
-                   babl_format("B'aG'aR'aA u8"),
+                   babl_format("cairo-ARGB32"),
                    (gpointer)buf,
                    GEGL_AUTO_ROWSTRIDE,
                    GEGL_BLIT_CACHE | (self->block ? 0 : GEGL_BLIT_DIRTY));