From b319929f3955855048e970f94f7e06d5f5ba987b Mon Sep 17 00:00:00 2001
From: baldurk <baldurk@baldurk.org>
Date: Fri, 16 Oct 2015 13:59:23 +0200
Subject: [PATCH] Make sure swapchain images are given TRANSFER_SOURCE usage

---
 renderdoc/driver/vulkan/wrappers/vk_wsi_funcs.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/renderdoc/driver/vulkan/wrappers/vk_wsi_funcs.cpp b/renderdoc/driver/vulkan/wrappers/vk_wsi_funcs.cpp
index b9af32b10..1dfe8c641 100644
--- a/renderdoc/driver/vulkan/wrappers/vk_wsi_funcs.cpp
+++ b/renderdoc/driver/vulkan/wrappers/vk_wsi_funcs.cpp
@@ -307,7 +307,12 @@ VkResult WrappedVulkan::vkCreateSwapchainKHR(
 		const VkSwapchainCreateInfoKHR*         pCreateInfo,
 		VkSwapchainKHR*                         pSwapChain)
 {
-	VkResult ret = ObjDisp(device)->CreateSwapchainKHR(Unwrap(device), pCreateInfo, pSwapChain);
+	VkSwapchainCreateInfoKHR createInfo = *pCreateInfo;
+
+	// make sure we can readback to get the screenshot
+	createInfo.imageUsageFlags |= VK_IMAGE_USAGE_TRANSFER_SOURCE_BIT;
+
+	VkResult ret = ObjDisp(device)->CreateSwapchainKHR(Unwrap(device), &createInfo, pSwapChain);
 	
 	if(ret == VK_SUCCESS)
 	{