From 66a0d3a03ce1123d381abf915fb01fc7c1627976 Mon Sep 17 00:00:00 2001
From: Laszlo Agocs <laszlo.agocs@qt.io>
Date: Thu, 27 Jul 2023 12:35:57 +0200
Subject: [PATCH] doc: Fix QVulkanFunctions code snippet

Showing code that cannot possibly compile is bad practice.
(vkAllocateCommandBuffers is in QVulkanDeviceFunctions, not
QVulkanFunctions)

Rather use a member function that is actually in QVulkanFunctions.

Change-Id: I3063a8a229152144ce866e915eb4c14ecc58e9ce
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
(cherry picked from commit e8e9c287ec6a086a96b36e692ab6d5ed11b64951)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 .../snippets/code/src_gui_vulkan_qvulkanfunctions.cpp  | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/gui/doc/snippets/code/src_gui_vulkan_qvulkanfunctions.cpp b/src/gui/doc/snippets/code/src_gui_vulkan_qvulkanfunctions.cpp
index df084185812..9c1b1c2fede 100644
--- a/src/gui/doc/snippets/code/src_gui_vulkan_qvulkanfunctions.cpp
+++ b/src/gui/doc/snippets/code/src_gui_vulkan_qvulkanfunctions.cpp
@@ -55,20 +55,18 @@
 namespace src_gui_vulkan_qvulkanfunctions {
 
 struct Window {
-    void render();
+    void init();
     QVulkanInstance *vulkanInstance() { return nullptr; }
 };
-VkDevice_T *device = nullptr;
-VkCommandBufferAllocateInfo cmdBufInfo;
-VkCommandBuffer cmdBuf;
 
 //! [0]
-void Window::render()
+void Window::init()
 {
     QVulkanInstance *inst = vulkanInstance();
     QVulkanFunctions *f = inst->functions();
     // ...
-    VkResult err = f->vkAllocateCommandBuffers(device, &cmdBufInfo, &cmdBuf);
+    uint32_t count = 0;
+    VkResult err = f->vkEnumeratePhysicalDevices(inst->vkInstance(), &count, nullptr);
     // ...
 }
 //! [0]