[retro-gtk/wip/aplazas/gl-display] Reset the glsl filer when the filter change

[Adrien Plazas <aplazas src gnome org>]

commit 9f02a214d6953bb4590da86d13313031d5cc3e38
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Wed Nov 15 15:57:02 2017 +0100

    Reset the glsl filer when the filter change

 retro-gtk/retro-gl-display.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/retro-gtk/retro-gl-display.c b/retro-gtk/retro-gl-display.c
index 50bc817..6f3778d 100644
--- a/retro-gtk/retro-gl-display.c
+++ b/retro-gtk/retro-gl-display.c
@@ -157,8 +157,6 @@ retro_gl_display_realize (RetroGLDisplay *self)
   glGenBuffers (1, &element_buffer_object);
   glBindBuffer (GL_ELEMENT_ARRAY_BUFFER, element_buffer_object);
   glBufferData (GL_ELEMENT_ARRAY_BUFFER, sizeof (elements), elements, GL_STATIC_DRAW);
-
-  prepare_shader_program (self);
 }
 
 static void
@@ -478,6 +476,7 @@ retro_gl_display_set_filter (RetroGLDisplay   *self,
   g_return_if_fail (self != NULL);
 
   self->filter = filter;
+  g_clear_object (&self->glsl_filter);
   gtk_widget_queue_draw (GTK_WIDGET (self));
 }