vulkan: fix a clip handling problem

We were looking at uninitialized memory here, instead
of the type of the source clip, as we should.

This showed up as mispositioned clip in the first frame
of a crossfade stack transition, and also as overdraw in
sliding stack transitions.

diff --git a/gsk/gskvulkanclip.c b/gsk/gskvulkanclip.c
index 9a3ad8696f95cefa13552a71d3035d966b8beea6..e7696e6abfabd40d29fe3d483a63565654e2ddee 100644 (file)
--- a/gsk/gskvulkanclip.c
+++ b/gsk/gskvulkanclip.c
@@ -133,7 +133,7 @@ gsk_vulkan_clip_transform (GskVulkanClip           *dest,
                            const graphene_matrix_t *transform,
                            const graphene_rect_t   *viewport)
 {
-  switch (dest->type)
+  switch (src->type)
     {
     default:
       g_assert_not_reached();