From 243fd67b1cd4bd10c4c0f088e17072663baae316 Mon Sep 17 00:00:00 2001
From: omar <omarcornut@gmail.com>
Date: Fri, 16 Feb 2018 22:28:52 +0100
Subject: [PATCH] Examples: Vulkan: Fix for empty draw data (init time) + fixed
 warning.

---
 examples/vulkan_example/imgui_impl_glfw_vulkan.cpp | 2 ++
 examples/vulkan_example/main.cpp                   | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/examples/vulkan_example/imgui_impl_glfw_vulkan.cpp b/examples/vulkan_example/imgui_impl_glfw_vulkan.cpp
index 8e93e7e9..31f22e86 100644
--- a/examples/vulkan_example/imgui_impl_glfw_vulkan.cpp
+++ b/examples/vulkan_example/imgui_impl_glfw_vulkan.cpp
@@ -170,6 +170,8 @@ void ImGui_ImplGlfwVulkan_RenderDrawData(ImDrawData* draw_data)
 {
     VkResult err;
     ImGuiIO& io = ImGui::GetIO();
+    if (draw_data->TotalVtxCount == 0)
+        return;
 
     // Create the Vertex Buffer:
     size_t vertex_size = draw_data->TotalVtxCount * sizeof(ImDrawVert);
diff --git a/examples/vulkan_example/main.cpp b/examples/vulkan_example/main.cpp
index 597374b5..be5fe528 100644
--- a/examples/vulkan_example/main.cpp
+++ b/examples/vulkan_example/main.cpp
@@ -507,7 +507,7 @@ static void cleanup_vulkan()
 static void frame_begin()
 {
     VkResult err;
-    while (true)
+    for (;;)
     {
         err = vkWaitForFences(g_Device, 1, &g_Fence[g_FrameIndex], VK_TRUE, 100);
         if (err == VK_SUCCESS) break;