vulkan: Always render clip extents

Now that we have the full render nodes available, there is not much
benefit in fine-grained control over multiple rectangles.
In particular, it's causing pain with complex regions.

There might be a benefit in clipping to the region's rectangles in cases
like widget-factory where the whole diff is made up of the 2 rectangles
of spinner and the pulsing progress bar, but it needs a good heuristic
for where this is useful.

1 files changed, 6 insertions, 1 deletions

diff --git a/gsk/vulkan/gskvulkanrender.c b/gsk/vulkan/gskvulkanrender.c
index a544f5df72..29c54aae3a 100644
--- a/gsk/vulkan/gskvulkanrender.c
+++ b/gsk/vulkan/gskvulkanrender.c
@@ -86,7 +86,12 @@ gsk_vulkan_render_setup (GskVulkanRender       *self,
     }
   if (clip)
     {
-      self->clip = cairo_region_reference ((cairo_region_t *) clip);
+      cairo_rectangle_int_t extents;
+      cairo_region_get_extents (clip, &extents);
+      self->clip = cairo_region_create_rectangle (&(cairo_rectangle_int_t) {
+                                                      extents.x, extents.y,
+                                                      extents.width, extents.height
+                                                  });
     }
   else
     {