[gtk/wip/baedert/for-master: 95/101] gl renderer: Handle 0/1 progress in crossfade nodes

[Timm Bäder <baedert src gnome org>]

commit fcc94d7cd9e322e66761d17535541c2bce6c2539
Author: Timm Bäder <mail baedert org>
Date:   Sun Jun 21 07:17:54 2020 +0200

    gl renderer: Handle 0/1 progress in crossfade nodes

 gsk/gl/gskglrenderer.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)
---
diff --git a/gsk/gl/gskglrenderer.c b/gsk/gl/gskglrenderer.c
index a451338d59..b626c9e7ce 100644
--- a/gsk/gl/gskglrenderer.c
+++ b/gsk/gl/gskglrenderer.c
@@ -2241,12 +2241,23 @@ render_cross_fade_node (GskGLRenderer   *self,
 {
   GskRenderNode *start_node = gsk_cross_fade_node_get_start_child (node);
   GskRenderNode *end_node = gsk_cross_fade_node_get_end_child (node);
-  float progress = gsk_cross_fade_node_get_progress (node);
+  const float progress = gsk_cross_fade_node_get_progress (node);
   TextureRegion start_region;
   TextureRegion end_region;
   gboolean is_offscreen1, is_offscreen2;
   OpCrossFade *op;
 
+  if (progress <= 0)
+    {
+      gsk_gl_renderer_add_render_ops (self, start_node, builder);
+      return;
+    }
+  else if (progress >= 1)
+    {
+      gsk_gl_renderer_add_render_ops (self, end_node, builder);
+      return;
+    }
+
   /* TODO: We create 2 textures here as big as the cross-fade node, but both the
    * start and the end node might be a lot smaller than that. */