From 0ee8fe193eaea301d379f759af3e828a1581a1b8 Mon Sep 17 00:00:00 2001
From: Matthew Waters <matthew@centricular.com>
Date: Thu, 31 Dec 2015 16:34:24 +1100
Subject: [PATCH] vulkan: add some debugging about the supported extensions

---
 ext/vulkan/vkdevice.c   | 3 +++
 ext/vulkan/vkinstance.c | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/ext/vulkan/vkdevice.c b/ext/vulkan/vkdevice.c
index b57a561d27..1df23b0a51 100644
--- a/ext/vulkan/vkdevice.c
+++ b/ext/vulkan/vkdevice.c
@@ -210,6 +210,7 @@ gst_vulkan_device_open (GstVulkanDevice * device, GError ** error)
   if (gst_vulkan_error_to_g_error (err, error,
           "vkEnumerateDeviceExtensionProperties") < 0)
     goto error;
+  GST_DEBUG_OBJECT (device, "Found %u extensions", device_extension_count);
 
   have_swapchain_ext = 0;
   enabled_extension_count = 0;
@@ -224,6 +225,8 @@ gst_vulkan_device_open (GstVulkanDevice * device, GError ** error)
   }
 
   for (uint32_t i = 0; i < device_extension_count; i++) {
+    GST_TRACE_OBJECT (device, "checking device extension %s",
+        device_extensions[i].extensionName);
     if (!strcmp (VK_KHR_SWAPCHAIN_EXTENSION_NAME,
             device_extensions[i].extensionName)) {
       have_swapchain_ext = TRUE;
diff --git a/ext/vulkan/vkinstance.c b/ext/vulkan/vkinstance.c
index 613351c88a..ede4177ab1 100644
--- a/ext/vulkan/vkinstance.c
+++ b/ext/vulkan/vkinstance.c
@@ -192,6 +192,7 @@ gst_vulkan_instance_open (GstVulkanInstance * instance, GError ** error)
     g_free (instance_layers);
     goto error;
   }
+  GST_DEBUG_OBJECT (instance, "Found %u extensions", instance_extension_count);
 
   memset (extension_names, 0, sizeof (extension_names));
   instance_extensions =
@@ -223,6 +224,9 @@ gst_vulkan_instance_open (GstVulkanInstance * instance, GError ** error)
 
     /* TODO: allow outside selection */
     for (uint32_t i = 0; i < instance_extension_count; i++) {
+      GST_TRACE_OBJECT (instance, "checking instance extension %s",
+          instance_extensions[i].extensionName);
+
       if (!g_strcmp0 (VK_KHR_SURFACE_EXTENSION_NAME,
               instance_extensions[i].extensionName)) {
         swapchain_ext_found = TRUE;