diff --git a/demos/gtk-demo/gtkfishbowl.c b/demos/gtk-demo/gtkfishbowl.c
index abcb65e55b..feebf2d4be 100644
--- a/demos/gtk-demo/gtkfishbowl.c
+++ b/demos/gtk-demo/gtkfishbowl.c
@@ -456,43 +456,33 @@ gtk_fishbowl_do_update (GtkFishbowl *fishbowl)
 {
   GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
   GdkFrameClock *frame_clock;
-  GdkFrameTimings *start, *end;
-  gint64 start_counter, end_counter;
-  gint64 n_frames, expected_frames;
-  gint64 start_timestamp, end_timestamp;
+  GdkFrameTimings *end;
+  gint64 end_counter;
+  double fps, expected_fps;
   gint64 interval;
 
   frame_clock = gtk_widget_get_frame_clock (GTK_WIDGET (fishbowl));
   if (frame_clock == NULL)
     return;
 
-  start_counter = gdk_frame_clock_get_history_start (frame_clock);
-  end_counter = gdk_frame_clock_get_frame_counter (frame_clock);
-  start = gdk_frame_clock_get_timings (frame_clock, start_counter);
-  for (end = gdk_frame_clock_get_timings (frame_clock, end_counter);
-       end_counter > start_counter && end != NULL && !gdk_frame_timings_get_complete (end);
-       end = gdk_frame_clock_get_timings (frame_clock, end_counter))
-    end_counter--;
-  if (end_counter - start_counter < 4)
+  fps = gdk_frame_clock_get_fps (frame_clock);
+  if (fps <= 0.0)
     return;
 
-  start_timestamp = gdk_frame_timings_get_presentation_time (start);
-  end_timestamp = gdk_frame_timings_get_presentation_time (end);
-  if (start_timestamp == 0 || end_timestamp == 0)
-    {
-      start_timestamp = gdk_frame_timings_get_frame_time (start);
-      end_timestamp = gdk_frame_timings_get_frame_time (end);
-    }
-
-  n_frames = end_counter - start_counter;
-  priv->framerate = ((double) n_frames) * G_USEC_PER_SEC / (end_timestamp - start_timestamp);
-  priv->framerate = ((int)(priv->framerate * 100))/100.0;
-
+  priv->framerate = fps;
   g_object_notify_by_pspec (G_OBJECT (fishbowl), props[PROP_FRAMERATE]);
 
   if (!priv->benchmark)
     return;
 
+  end_counter = gdk_frame_clock_get_frame_counter (frame_clock);
+  for (end = gdk_frame_clock_get_timings (frame_clock, end_counter);
+       end != NULL && !gdk_frame_timings_get_complete (end);
+       end = gdk_frame_clock_get_timings (frame_clock, end_counter))
+    end_counter--;
+  if (end == NULL)
+    return;
+
   interval = gdk_frame_timings_get_refresh_interval (end);
   if (interval == 0)
     {
@@ -500,16 +490,16 @@ gtk_fishbowl_do_update (GtkFishbowl *fishbowl)
       if (interval == 0)
         return;
     }
-  expected_frames = round ((double) (end_timestamp - start_timestamp) / interval);
+  expected_fps = (double) G_USEC_PER_SEC / interval;
 
-  if (n_frames >= expected_frames)
+  if (fps > (expected_fps - 1))
     {
       if (priv->last_benchmark_change > 0)
         priv->last_benchmark_change *= 2;
       else
         priv->last_benchmark_change = 1;
     }
-  else if (n_frames + 1 < expected_frames)
+  else if (0.95 * fps < expected_fps)
     {
       if (priv->last_benchmark_change < 0)
         priv->last_benchmark_change--;
diff --git a/gsk/gpu/gskgpunodeprocessor.c b/gsk/gpu/gskgpunodeprocessor.c
index 03308e1500..5c3125a2a4 100644
--- a/gsk/gpu/gskgpunodeprocessor.c
+++ b/gsk/gpu/gskgpunodeprocessor.c
@@ -2077,6 +2077,8 @@ gsk_gpu_node_processor_add_texture_scale_node (GskGpuNodeProcessor *self,
       /* now intersect with actual node bounds */
       if (!gsk_rect_intersection (&clip_bounds, &node->bounds, &clip_bounds))
         return;
+      clip_bounds.size.width = ceilf (clip_bounds.size.width);
+      clip_bounds.size.height = ceilf (clip_bounds.size.height);
       offscreen = gsk_gpu_node_processor_create_offscreen (self->frame,
                                                            graphene_vec2_one (),
                                                            &clip_bounds,
diff --git a/gsk/gpu/gskgpurenderpassop.c b/gsk/gpu/gskgpurenderpassop.c
index c9f7ee2615..4dbfea7aef 100644
--- a/gsk/gpu/gskgpurenderpassop.c
+++ b/gsk/gpu/gskgpurenderpassop.c
@@ -245,7 +245,9 @@ gsk_gpu_render_pass_end_op_vk_command (GskGpuOp              *op,
 
   vkCmdEndRenderPass (state->vk_command_buffer);
 
-  if (gsk_gpu_image_get_flags (self->target) & GSK_GPU_IMAGE_CAN_MIPMAP)
+  if ((gsk_gpu_image_get_flags (self->target) & GSK_GPU_IMAGE_CAN_MIPMAP) &&
+      (gsk_gpu_image_get_width (self->target) > 1 ||
+       gsk_gpu_image_get_height (self->target) > 1))
     {
       vkCmdPipelineBarrier (state->vk_command_buffer,
                             gsk_vulkan_image_get_vk_pipeline_stage (GSK_VULKAN_IMAGE (self->target)),
diff --git a/gsk/gpu/gskvulkanimageprivate.h b/gsk/gpu/gskvulkanimageprivate.h
index 54f2754326..77df1e23b3 100644
--- a/gsk/gpu/gskvulkanimageprivate.h
+++ b/gsk/gpu/gskvulkanimageprivate.h
@@ -71,7 +71,7 @@ static inline guint
 gsk_vulkan_mipmap_levels (gsize width,
                           gsize height)
 {
-  return g_bit_nth_msf (MAX (width, height) - 1, -1) + 1;
+  return g_bit_nth_msf (MAX (MAX (width, height) - 1, 1), -1) + 1;
 }
 
 G_END_DECLS
diff --git a/testsuite/gsk/compare/mipmap-with-1x1.node b/testsuite/gsk/compare/mipmap-with-1x1.node
new file mode 100644
index 0000000000..c52ed08bf9
--- /dev/null
+++ b/testsuite/gsk/compare/mipmap-with-1x1.node
@@ -0,0 +1,7 @@
+texture-scale {
+  bounds: 0 0 10 10;
+  filter: trilinear;
+  texture: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVQImWP4z8DwHwAFAAH/q842\
+iQAAAABJRU5ErkJggg==\
+");
+}
diff --git a/testsuite/gsk/compare/mipmap-with-1x1.png b/testsuite/gsk/compare/mipmap-with-1x1.png
new file mode 100644
index 0000000000..6c5b2a45af
Binary files /dev/null and b/testsuite/gsk/compare/mipmap-with-1x1.png differ
diff --git a/testsuite/gsk/compare/texture-scale-nearest-noninteger-scaled-nogl.node b/testsuite/gsk/compare/texture-scale-nearest-noninteger-scaled-nogl.node
new file mode 100644
index 0000000000..6516dad845
--- /dev/null
+++ b/testsuite/gsk/compare/texture-scale-nearest-noninteger-scaled-nogl.node
@@ -0,0 +1,14 @@
+color {
+  bounds: 0 0 3 2;
+  color: rgb(0,0,0);
+}
+transform {
+  transform: scale(2);
+  child: texture-scale {
+    bounds: 0 0 1.5 1;
+    filter: nearest;
+    texture: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAADElEQVQImWNoYGAAAAGEAIGs40g+\
+AAAAAElFTkSuQmCC\
+");
+  }
+}
diff --git a/testsuite/gsk/compare/texture-scale-nearest-noninteger-scaled-nogl.png b/testsuite/gsk/compare/texture-scale-nearest-noninteger-scaled-nogl.png
new file mode 100644
index 0000000000..64a761cf99
Binary files /dev/null and b/testsuite/gsk/compare/texture-scale-nearest-noninteger-scaled-nogl.png differ
diff --git a/testsuite/gsk/meson.build b/testsuite/gsk/meson.build
index a1c3e9cd6d..d8776c451a 100644
--- a/testsuite/gsk/meson.build
+++ b/testsuite/gsk/meson.build
@@ -104,6 +104,7 @@ compare_render_tests = [
   'mask-modes-with-alpha',
   'mask-texture-color-alpha',
   'mipmap-generation-later',
+  'mipmap-with-1x1',
   'nested-rounded-clips',
   'offscreen-forced-downscale',
   'offscreen-fractional-translate-nogl',
@@ -170,6 +171,7 @@ compare_render_tests = [
   'texture-scale-filters-nocairo',
   'texture-scale-magnify-10000x',
   'texture-scale-magnify-rotate',
+  'texture-scale-nearest-noninteger-scaled-nogl',
   'texture-scale-nearest-vs-linear',
   'texture-scale-offset',
   'texture-scale-stripes',