layers : gh682 move gipa dispatch table init

Move the GIPA setup of the dispatch tables for layers into
the layer_init_device_dispatch_table call since we're already
doing a majority of it there.  This removes the need to separately
setup the WSI extension entry-points.

Additionally, memset the table to 0, just to make sure anything
that gets added in the future is obvoiusly not set.

Change-Id: I63c7c107cd9f7957e2766fdbeb8a06bc1ae0eda6
diff --git a/layers/object_tracker.h b/layers/object_tracker.h
index 67361ed..18d2cb2 100644
--- a/layers/object_tracker.h
+++ b/layers/object_tracker.h
@@ -123,13 +123,7 @@
 
 static void createDeviceRegisterExtensions(const VkDeviceCreateInfo *pCreateInfo, VkDevice device) {
     layer_data *my_device_data = get_my_data_ptr(get_dispatch_key(device), layer_data_map);
-    VkLayerDispatchTable *pDisp = get_dispatch_table(object_tracker_device_table_map, device);
-    PFN_vkGetDeviceProcAddr gpa = pDisp->GetDeviceProcAddr;
-    pDisp->CreateSwapchainKHR = (PFN_vkCreateSwapchainKHR)gpa(device, "vkCreateSwapchainKHR");
-    pDisp->DestroySwapchainKHR = (PFN_vkDestroySwapchainKHR)gpa(device, "vkDestroySwapchainKHR");
-    pDisp->GetSwapchainImagesKHR = (PFN_vkGetSwapchainImagesKHR)gpa(device, "vkGetSwapchainImagesKHR");
-    pDisp->AcquireNextImageKHR = (PFN_vkAcquireNextImageKHR)gpa(device, "vkAcquireNextImageKHR");
-    pDisp->QueuePresentKHR = (PFN_vkQueuePresentKHR)gpa(device, "vkQueuePresentKHR");
+
     my_device_data->wsi_enabled = false;
     for (uint32_t i = 0; i < pCreateInfo->enabledExtensionCount; i++) {
         if (strcmp(pCreateInfo->ppEnabledExtensionNames[i], VK_KHR_SWAPCHAIN_EXTENSION_NAME) == 0)
@@ -142,62 +136,6 @@
 
 static void createInstanceRegisterExtensions(const VkInstanceCreateInfo *pCreateInfo, VkInstance instance) {
     VkLayerInstanceDispatchTable *pDisp = get_dispatch_table(object_tracker_instance_table_map, instance);
-    PFN_vkGetInstanceProcAddr gpa = pDisp->GetInstanceProcAddr;
-
-    pDisp->DestroySurfaceKHR = (PFN_vkDestroySurfaceKHR)gpa(instance, "vkDestroySurfaceKHR");
-    pDisp->GetPhysicalDeviceSurfaceSupportKHR =
-        (PFN_vkGetPhysicalDeviceSurfaceSupportKHR)gpa(instance, "vkGetPhysicalDeviceSurfaceSupportKHR");
-    pDisp->GetPhysicalDeviceSurfaceCapabilitiesKHR =
-        (PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR)gpa(instance, "vkGetPhysicalDeviceSurfaceCapabilitiesKHR");
-    pDisp->GetPhysicalDeviceSurfaceFormatsKHR =
-        (PFN_vkGetPhysicalDeviceSurfaceFormatsKHR)gpa(instance, "vkGetPhysicalDeviceSurfaceFormatsKHR");
-    pDisp->GetPhysicalDeviceSurfacePresentModesKHR =
-        (PFN_vkGetPhysicalDeviceSurfacePresentModesKHR)gpa(instance, "vkGetPhysicalDeviceSurfacePresentModesKHR");
-#ifndef __ANDROID__
-    pDisp->GetPhysicalDeviceDisplayPropertiesKHR = 
-        (PFN_vkGetPhysicalDeviceDisplayPropertiesKHR)gpa(instance, "vkGetPhysicalDeviceDisplayPropertiesKHR");
-    pDisp->GetPhysicalDeviceDisplayPlanePropertiesKHR = 
-        (PFN_vkGetPhysicalDeviceDisplayPlanePropertiesKHR)gpa(instance, "vkGetPhysicalDeviceDisplayPlanePropertiesKHR");
-    pDisp->GetDisplayPlaneSupportedDisplaysKHR = 
-        (PFN_vkGetDisplayPlaneSupportedDisplaysKHR)gpa(instance, "vkGetDisplayPlaneSupportedDisplaysKHR");
-    pDisp->GetDisplayModePropertiesKHR = 
-        (PFN_vkGetDisplayModePropertiesKHR)gpa(instance, "vkGetDisplayModePropertiesKHR");
-    pDisp->CreateDisplayModeKHR = 
-        (PFN_vkCreateDisplayModeKHR)gpa(instance, "vkCreateDisplayModeKHR");
-    pDisp->GetDisplayPlaneCapabilitiesKHR = 
-        (PFN_vkGetDisplayPlaneCapabilitiesKHR)gpa(instance, "vkGetDisplayPlaneCapabilitiesKHR");
-    pDisp->CreateDisplayPlaneSurfaceKHR = 
-        (PFN_vkCreateDisplayPlaneSurfaceKHR)gpa(instance, "vkCreateDisplayPlaneSurfaceKHR");
-#endif
-
-#if VK_USE_PLATFORM_WIN32_KHR
-    pDisp->CreateWin32SurfaceKHR = (PFN_vkCreateWin32SurfaceKHR)gpa(instance, "vkCreateWin32SurfaceKHR");
-    pDisp->GetPhysicalDeviceWin32PresentationSupportKHR =
-        (PFN_vkGetPhysicalDeviceWin32PresentationSupportKHR)gpa(instance, "vkGetPhysicalDeviceWin32PresentationSupportKHR");
-#endif // VK_USE_PLATFORM_WIN32_KHR
-#ifdef VK_USE_PLATFORM_XCB_KHR
-    pDisp->CreateXcbSurfaceKHR = (PFN_vkCreateXcbSurfaceKHR)gpa(instance, "vkCreateXcbSurfaceKHR");
-    pDisp->GetPhysicalDeviceXcbPresentationSupportKHR =
-        (PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR)gpa(instance, "vkGetPhysicalDeviceXcbPresentationSupportKHR");
-#endif // VK_USE_PLATFORM_XCB_KHR
-#ifdef VK_USE_PLATFORM_XLIB_KHR
-    pDisp->CreateXlibSurfaceKHR = (PFN_vkCreateXlibSurfaceKHR)gpa(instance, "vkCreateXlibSurfaceKHR");
-    pDisp->GetPhysicalDeviceXlibPresentationSupportKHR =
-        (PFN_vkGetPhysicalDeviceXlibPresentationSupportKHR)gpa(instance, "vkGetPhysicalDeviceXlibPresentationSupportKHR");
-#endif // VK_USE_PLATFORM_XLIB_KHR
-#ifdef VK_USE_PLATFORM_MIR_KHR
-    pDisp->CreateMirSurfaceKHR = (PFN_vkCreateMirSurfaceKHR)gpa(instance, "vkCreateMirSurfaceKHR");
-    pDisp->GetPhysicalDeviceMirPresentationSupportKHR =
-        (PFN_vkGetPhysicalDeviceMirPresentationSupportKHR)gpa(instance, "vkGetPhysicalDeviceMirPresentationSupportKHR");
-#endif // VK_USE_PLATFORM_MIR_KHR
-#ifdef VK_USE_PLATFORM_WAYLAND_KHR
-    pDisp->CreateWaylandSurfaceKHR = (PFN_vkCreateWaylandSurfaceKHR)gpa(instance, "vkCreateWaylandSurfaceKHR");
-    pDisp->GetPhysicalDeviceWaylandPresentationSupportKHR =
-        (PFN_vkGetPhysicalDeviceWaylandPresentationSupportKHR)gpa(instance, "vkGetPhysicalDeviceWaylandPresentationSupportKHR");
-#endif //  VK_USE_PLATFORM_WAYLAND_KHR
-#ifdef VK_USE_PLATFORM_ANDROID_KHR
-    pDisp->CreateAndroidSurfaceKHR = (PFN_vkCreateAndroidSurfaceKHR)gpa(instance, "vkCreateAndroidSurfaceKHR");
-#endif // VK_USE_PLATFORM_ANDROID_KHR
 
     instanceExtMap[pDisp] = {};