[gtk+] vulkan: Keep vertex buffer around until cleanup

[Benjamin Otte <otte src gnome org>]

commit 5a6ead8760895cf0f29dd019af9738d15638dd26
Author: Benjamin Otte <otte redhat com>
Date:   Fri Jan 6 17:16:38 2017 +0100

    vulkan: Keep vertex buffer around until cleanup
    
    Don't just free it while the command buffer using it is still pending.

 gsk/gskvulkanrender.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/gsk/gskvulkanrender.c b/gsk/gskvulkanrender.c
index d89e4f7..f510750 100644
--- a/gsk/gskvulkanrender.c
+++ b/gsk/gskvulkanrender.c
@@ -35,6 +35,7 @@ struct _GskVulkanRender
   VkRenderPass render_pass;
   GskVulkanPipelineLayout *layout;
   GskVulkanUploader *uploader;
+  GskVulkanBuffer *vertex_buffer;
 
   GHashTable *descriptor_set_indexes;
   VkDescriptorPool descriptor_pool;
@@ -466,7 +467,6 @@ void
 gsk_vulkan_render_draw (GskVulkanRender   *self,
                         VkSampler          sampler)
 {
-  GskVulkanBuffer *buffer;
   VkCommandBuffer command_buffer;
   GSList *l;
   guint i;
@@ -475,7 +475,7 @@ gsk_vulkan_render_draw (GskVulkanRender   *self,
 
   command_buffer = gsk_vulkan_command_pool_get_buffer (self->command_pool);
 
-  buffer = gsk_vulkan_render_collect_vertex_data (self);
+  self->vertex_buffer = gsk_vulkan_render_collect_vertex_data (self);
 
   vkCmdSetViewport (command_buffer,
                     0,
@@ -521,7 +521,7 @@ gsk_vulkan_render_draw (GskVulkanRender   *self,
 
       for (l = self->render_passes; l; l = l->next)
         {
-          gsk_vulkan_render_pass_draw (l->data, self, buffer, self->layout, command_buffer);
+          gsk_vulkan_render_pass_draw (l->data, self, self->vertex_buffer, self->layout, command_buffer);
         }
 
       vkCmdEndRenderPass (command_buffer);
@@ -529,8 +529,6 @@ gsk_vulkan_render_draw (GskVulkanRender   *self,
 
   gsk_vulkan_command_pool_submit_buffer (self->command_pool, command_buffer, self->fence);
 
-  gsk_vulkan_buffer_free (buffer);
-
   if (GSK_RENDER_MODE_CHECK (SYNC))
     {
       GSK_VK_CHECK (vkWaitForFences, gdk_vulkan_context_get_device (self->vulkan),
@@ -569,6 +567,8 @@ gsk_vulkan_render_cleanup (GskVulkanRender *self)
 
   gsk_vulkan_command_pool_reset (self->command_pool);
 
+  g_clear_pointer (&self->vertex_buffer, gsk_vulkan_buffer_free);
+
   g_hash_table_remove_all (self->descriptor_set_indexes);
   GSK_VK_CHECK (vkResetDescriptorPool, device,
                                        self->descriptor_pool,