[vulkan] Add helper method to wait for presenter fence

src/vulkan/vulkan_presenter.cpp

@@ -66,6 +66,15 @@ namespace dxvk::vk {
     return status;
   }
 
+
+  VkResult Presenter::waitForFence(VkFence fence) {
+    // Ignore timeouts, we don't want to block the
+    // app indefinitely if something goes wrong
+    return m_vkd->vkWaitForFences(
+      m_vkd->device(), 1, &fence, VK_FALSE,
+      1'000'000'000ull);
+  }
+
   
   VkResult Presenter::presentImage(VkSemaphore wait) {
     VkPresentInfoKHR info;

src/vulkan/vulkan_presenter.h

@@ -132,6 +132,17 @@ namespace dxvk::vk {
             VkFence         fence,
             uint32_t&       index);
     
+    /**
+     * \brief Waits for fence to get signaled
+     *
+     * Helper method that can be used in conjunction
+     * with the fence passed to \ref acquireNextImage.
+     * \param [in] fence Fence to wait on
+     * \returns Status of the operation
+     */
+    VkResult waitForFence(
+            VkFence         fence);
+    
     /**
      * \brief Presents current image
      *