diff --git a/gdk/gdkdisplay.c b/gdk/gdkdisplay.c
index a233af6ed0..c2288feeed 100644
--- a/gdk/gdkdisplay.c
+++ b/gdk/gdkdisplay.c
@@ -1882,6 +1882,9 @@ gdk_display_init_dmabuf (GdkDisplay *self)
   if (self->dmabuf_formats != NULL)
     return;
 
+  GDK_DISPLAY_DEBUG (self, DMABUF,
+                     "Beginning initialization of dmabuf support");
+
   builder = gdk_dmabuf_formats_builder_new ();
 
 #ifdef HAVE_DMABUF
@@ -1899,6 +1902,10 @@ gdk_display_init_dmabuf (GdkDisplay *self)
 #endif
 
   self->dmabuf_formats = gdk_dmabuf_formats_builder_free_to_formats (builder);
+
+  GDK_DISPLAY_DEBUG (self, DMABUF,
+                     "Initialized support for %zu dmabuf formats",
+                     gdk_dmabuf_formats_get_n_formats (self->dmabuf_formats));
 }
 
 /**
diff --git a/gdk/gdkdmabuf.c b/gdk/gdkdmabuf.c
index 9f0c057fb8..968970bd16 100644
--- a/gdk/gdkdmabuf.c
+++ b/gdk/gdkdmabuf.c
@@ -463,6 +463,8 @@ gdk_dmabuf_direct_downloader_do_download (GdkTexture *texture,
           g_warning ("Failed to seek dmabuf: %s", g_strerror (errno));
           goto out;
         }
+      /* be a good citizen and seek back to the start, as the dos recommend */
+      lseek (dmabuf->planes[i].fd, 0, SEEK_SET);
 
       if (ioctl (dmabuf->planes[i].fd, DMA_BUF_IOCTL_SYNC, &(struct dma_buf_sync) { DMA_BUF_SYNC_START|DMA_BUF_SYNC_READ }) < 0)
         g_warning ("Failed to sync dmabuf: %s", g_strerror (errno));
diff --git a/gdk/gdkmemoryformat.c b/gdk/gdkmemoryformat.c
index 6fe398acb6..ce8ea268a4 100644
--- a/gdk/gdkmemoryformat.c
+++ b/gdk/gdkmemoryformat.c
@@ -569,7 +569,7 @@ static const GdkMemoryFormatDescription memory_formats[] = {
     GDK_MEMORY_ALPHA_PREMULTIPLIED,
     16,
     G_ALIGNOF (float),
-    TRUE,
+    GDK_MEMORY_FLOAT32,
     { 0, 0, 3, 0 },
     { GL_RGBA32F, GL_RGBA, GL_FLOAT, { GL_RED, GL_GREEN, GL_BLUE, GL_ALPHA } },
     r32g32b32a32_float_to_float,
diff --git a/gsk/gl/gskgldriver.c b/gsk/gl/gskgldriver.c
index 1faf2d18ef..f02fcc2fa3 100644
--- a/gsk/gl/gskgldriver.c
+++ b/gsk/gl/gskgldriver.c
@@ -1801,8 +1801,9 @@ create_texture_from_texture_destroy (gpointer data)
 }
 
 GdkTexture *
-gsk_gl_driver_create_gdk_texture (GskGLDriver *self,
-                                  guint        texture_id)
+gsk_gl_driver_create_gdk_texture (GskGLDriver     *self,
+                                  guint            texture_id,
+                                  GdkMemoryFormat  format)
 {
   GskGLTextureState *state;
   GdkGLTextureBuilder *builder;
@@ -1830,6 +1831,7 @@ gsk_gl_driver_create_gdk_texture (GskGLDriver *self,
   builder = gdk_gl_texture_builder_new ();
   gdk_gl_texture_builder_set_context (builder, self->command_queue->context);
   gdk_gl_texture_builder_set_id (builder, texture_id);
+  gdk_gl_texture_builder_set_format (builder, format);
   gdk_gl_texture_builder_set_width (builder, texture->width);
   gdk_gl_texture_builder_set_height (builder, texture->height);
   gdk_gl_texture_builder_set_sync (builder, state->sync);
diff --git a/gsk/gl/gskgldriverprivate.h b/gsk/gl/gskgldriverprivate.h
index c421bed98a..21d21a2b48 100644
--- a/gsk/gl/gskgldriverprivate.h
+++ b/gsk/gl/gskgldriverprivate.h
@@ -154,7 +154,8 @@ void                gsk_gl_driver_begin_frame            (GskGLDriver         *s
 void                gsk_gl_driver_end_frame              (GskGLDriver         *self);
 void                gsk_gl_driver_after_frame            (GskGLDriver         *self);
 GdkTexture        * gsk_gl_driver_create_gdk_texture     (GskGLDriver         *self,
-                                                          guint                texture_id);
+                                                          guint                texture_id,
+                                                          GdkMemoryFormat      format);
 void                gsk_gl_driver_cache_texture          (GskGLDriver         *self,
                                                           const GskTextureKey *key,
                                                           guint                texture_id);
diff --git a/gsk/gl/gskglrenderer.c b/gsk/gl/gskglrenderer.c
index d61a42258c..cf551eaedc 100644
--- a/gsk/gl/gskglrenderer.c
+++ b/gsk/gl/gskglrenderer.c
@@ -332,6 +332,7 @@ gsk_gl_renderer_render_texture (GskRenderer           *renderer,
   GskGLRenderJob *job;
   GdkTexture *texture;
   guint texture_id;
+  GdkMemoryFormat gdk_format;
   int width, height, max_size;
   int format;
 
@@ -375,9 +376,15 @@ gsk_gl_renderer_render_texture (GskRenderer           *renderer,
 
   if (gsk_render_node_get_preferred_depth (root) != GDK_MEMORY_U8 &&
       gdk_gl_context_check_version (self->context, "3.0", "3.0"))
-    format = GL_RGBA32F;
+    {
+      gdk_format = GDK_MEMORY_R32G32B32A32_FLOAT_PREMULTIPLIED;
+      format = GL_RGBA32F;
+    }
   else 
-    format = GL_RGBA8;
+    {
+      format = GL_RGBA8;
+      gdk_format = GDK_MEMORY_R8G8B8A8_PREMULTIPLIED;
+    }
 
   gdk_gl_context_make_current (self->context);
 
@@ -394,7 +401,7 @@ gsk_gl_renderer_render_texture (GskRenderer           *renderer,
 #endif
       gsk_gl_render_job_render_flipped (job, root);
       texture_id = gsk_gl_driver_release_render_target (self->driver, render_target, FALSE);
-      texture = gsk_gl_driver_create_gdk_texture (self->driver, texture_id);
+      texture = gsk_gl_driver_create_gdk_texture (self->driver, texture_id, gdk_format);
       gsk_gl_driver_end_frame (self->driver);
       gsk_gl_render_job_free (job);