aboutsummaryrefslogtreecommitdiffstats
path: root/3rdparty/QtPropertyBrowser/examples/object_controller/main.cpp
blob: 96d64398f9c9b34ab6dfbcecf16e4fc35d49bfdb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of a Qt Solutions component.
**
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
**     the names of its contributors may be used to endorse or promote
**     products derived from this software without specific prior written
**     permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
****************************************************************************/

#include <QApplication>
#include <QSpinBox>
#include <QDialogButtonBox>
#include <QLineEdit>
#include <QDialog>
#include <QComboBox>
#include <QToolButton>
#include <QPushButton>
#include <QBoxLayout>
#include <QTreeWidget>
#include <QAction>
#include <QDesktopWidget>
#include <QTextDocument>
#include <QCalendarWidget>
#include <QTimeLine>
#include "objectcontroller.h"

class MyController : public QDialog
{
    Q_OBJECT
public:
    MyController(QWidget *parent = 0);
    ~MyController();
private slots:
    void createAndControl();
private:
    QComboBox *theClassCombo;
    ObjectController *theController;
    QStringList theClassNames;
    QObject *theControlledObject;
};

MyController::MyController(QWidget *parent)
    : QDialog(parent), theControlledObject(0)
{
    theClassCombo = new QComboBox(this);
    QToolButton *button = new QToolButton(this);
    theController = new ObjectController(this);
    QDialogButtonBox *buttonBox = new QDialogButtonBox(this);

    connect(button, SIGNAL(clicked()), this, SLOT(createAndControl()));
    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));

    button->setText(tr("Create And Control"));
    buttonBox->setStandardButtons(QDialogButtonBox::Close);

    QVBoxLayout *layout = new QVBoxLayout(this);
    QHBoxLayout *internalLayout = new QHBoxLayout();
    internalLayout->addWidget(theClassCombo);
    internalLayout->addWidget(button);
    layout->addLayout(internalLayout);
    layout->addWidget(theController);
    layout->addWidget(buttonBox);

    theClassNames.append(QLatin1String("QWidget"));
    theClassNames.append(QLatin1String("QPushButton"));
    theClassNames.append(QLatin1String("QDialogButtonBox"));
    theClassNames.append(QLatin1String("QTreeWidget"));
    theClassNames.append(QLatin1String("QCalendarWidget"));
    theClassNames.append(QLatin1String("QAction"));
    theClassNames.append(QLatin1String("QTimeLine"));
    theClassNames.append(QLatin1String("QTextDocument"));

    theClassCombo->addItems(theClassNames);
}

MyController::~MyController()
{
    if (theControlledObject)
        delete theControlledObject;
}

void MyController::createAndControl()
{
    QObject *newObject = 0;
    QString className = theClassNames.at(theClassCombo->currentIndex());
    if (className == QLatin1String("QWidget"))
        newObject = new QWidget();
    else if (className == QLatin1String("QPushButton"))
        newObject = new QPushButton();
    else if (className == QLatin1String("QDialogButtonBox"))
        newObject = new QDialogButtonBox();
    else if (className == QLatin1String("QTreeWidget"))
        newObject = new QTreeWidget();
    else if (className == QLatin1String("QCalendarWidget"))
        newObject = new QCalendarWidget();
    else if (className == QLatin1String("QAction"))
        newObject = new QAction(0);
    else if (className == QLatin1String("QTimeLine"))
        newObject = new QTimeLine();
    else if (className == QLatin1String("QTextDocument"))
        newObject = new QTextDocument();

    if (!newObject)
        return;

    QWidget *newWidget = qobject_cast<QWidget *>(newObject);
    if (newWidget) {
        QRect r = newWidget->geometry();
        r.setSize(newWidget->sizeHint());
        r.setWidth(qMax(r.width(), 150));
        r.setHeight(qMax(r.height(), 50));
        r.moveCenter(QApplication::desktop()->geometry().center());
        newWidget->setGeometry(r);
        newWidget->setWindowTitle(tr("Controlled Object: %1").arg(className));
        newWidget->show();
    }

    if (theControlledObject)
        delete theControlledObject;

    theControlledObject = newObject;
    theController->setObject(theControlledObject);
}

int main(int argc, char **argv)
{
    QApplication app(argc, argv);

    MyController *controller = new MyController();
    controller->show();

    int ret = app.exec();

    return ret;
}

#include "main.moc"
n969'>969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066
// dear imgui: Renderer for Vulkan
// This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)

// Missing features:
//  [ ] Renderer: User texture binding. Changes of ImTextureID aren't supported by this binding! See https://github.com/ocornut/imgui/pull/914

// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
// https://github.com/ocornut/imgui

// The aim of imgui_impl_vulkan.h/.cpp is to be usable in your engine without any modification. 
// IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/

// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
//  2018-08-25: Vulkan: Fixed mishandled VkSurfaceCapabilitiesKHR::maxImageCount=0 case.
//  2018-06-22: Inverted the parameters to ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings.
//  2018-06-08: Misc: Extracted imgui_impl_vulkan.cpp/.h away from the old combined GLFW+Vulkan example.
//  2018-06-08: Vulkan: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
//  2018-03-03: Vulkan: Various refactor, created a couple of ImGui_ImplVulkanH_XXX helper that the example can use and that viewport support will use.
//  2018-03-01: Vulkan: Renamed ImGui_ImplVulkan_Init_Info to ImGui_ImplVulkan_InitInfo and fields to match more closely Vulkan terminology.
//  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback, ImGui_ImplVulkan_Render() calls ImGui_ImplVulkan_RenderDrawData() itself.
//  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
//  2017-05-15: Vulkan: Fix scissor offset being negative. Fix new Vulkan validation warnings. Set required depth member for buffer image copy.
//  2016-11-13: Vulkan: Fix validation layer warnings and errors and redeclare gl_PerVertex.
//  2016-10-18: Vulkan: Add location decorators & change to use structs as in/out in glsl, update embedded spv (produced with glslangValidator -x). Null the released resources.
//  2016-08-27: Vulkan: Fix Vulkan example for use when a depth buffer is active.

#include "imgui.h"
#include "imgui_impl_vulkan.h"
#include <stdio.h>

// Vulkan data
static const VkAllocationCallbacks* g_Allocator = NULL;
static VkPhysicalDevice             g_PhysicalDevice = VK_NULL_HANDLE;
static VkInstance                   g_Instance = VK_NULL_HANDLE;
static VkDevice                     g_Device = VK_NULL_HANDLE;
static uint32_t                     g_QueueFamily = (uint32_t)-1;
static VkQueue                      g_Queue = VK_NULL_HANDLE;
static VkPipelineCache              g_PipelineCache = VK_NULL_HANDLE;
static VkDescriptorPool             g_DescriptorPool = VK_NULL_HANDLE;
static VkRenderPass                 g_RenderPass = VK_NULL_HANDLE;
static void                         (*g_CheckVkResultFn)(VkResult err) = NULL;

static VkDeviceSize                 g_BufferMemoryAlignment = 256;
static VkPipelineCreateFlags        g_PipelineCreateFlags = 0;

static VkDescriptorSetLayout        g_DescriptorSetLayout = VK_NULL_HANDLE;
static VkPipelineLayout             g_PipelineLayout = VK_NULL_HANDLE;
static VkDescriptorSet              g_DescriptorSet = VK_NULL_HANDLE;
static VkPipeline                   g_Pipeline = VK_NULL_HANDLE;

// Frame data
struct FrameDataForRender
{
    VkDeviceMemory  VertexBufferMemory;
    VkDeviceMemory  IndexBufferMemory;
    VkDeviceSize    VertexBufferSize;
    VkDeviceSize    IndexBufferSize;
    VkBuffer        VertexBuffer;
    VkBuffer        IndexBuffer;
};
static int                    g_FrameIndex = 0;
static FrameDataForRender     g_FramesDataBuffers[IMGUI_VK_QUEUED_FRAMES] = {};

// Font data
static VkSampler              g_FontSampler = VK_NULL_HANDLE;
static VkDeviceMemory         g_FontMemory = VK_NULL_HANDLE;
static VkImage                g_FontImage = VK_NULL_HANDLE;
static VkImageView            g_FontView = VK_NULL_HANDLE;
static VkDeviceMemory         g_UploadBufferMemory = VK_NULL_HANDLE;
static VkBuffer               g_UploadBuffer = VK_NULL_HANDLE;

// glsl_shader.vert, compiled with:
// # glslangValidator -V -x -o glsl_shader.vert.u32 glsl_shader.vert
static uint32_t __glsl_shader_vert_spv[] =
{
    0x07230203,0x00010000,0x00080001,0x0000002e,0x00000000,0x00020011,0x00000001,0x0006000b,
    0x00000001,0x4c534c47,0x6474732e,0x3035342e,0x00000000,0x0003000e,0x00000000,0x00000001,
    0x000a000f,0x00000000,0x00000004,0x6e69616d,0x00000000,0x0000000b,0x0000000f,0x00000015,
    0x0000001b,0x0000001c,0x00030003,0x00000002,0x000001c2,0x00040005,0x00000004,0x6e69616d,
    0x00000000,0x00030005,0x00000009,0x00000000,0x00050006,0x00000009,0x00000000,0x6f6c6f43,
    0x00000072,0x00040006,0x00000009,0x00000001,0x00005655,0x00030005,0x0000000b,0x0074754f,
    0x00040005,0x0000000f,0x6c6f4361,0x0000726f,0x00030005,0x00000015,0x00565561,0x00060005,
    0x00000019,0x505f6c67,0x65567265,0x78657472,0x00000000,0x00060006,0x00000019,0x00000000,
    0x505f6c67,0x7469736f,0x006e6f69,0x00030005,0x0000001b,0x00000000,0x00040005,0x0000001c,
    0x736f5061,0x00000000,0x00060005,0x0000001e,0x73755075,0x6e6f4368,0x6e617473,0x00000074,
    0x00050006,0x0000001e,0x00000000,0x61635375,0x0000656c,0x00060006,0x0000001e,0x00000001,
    0x61725475,0x616c736e,0x00006574,0x00030005,0x00000020,0x00006370,0x00040047,0x0000000b,
    0x0000001e,0x00000000,0x00040047,0x0000000f,0x0000001e,0x00000002,0x00040047,0x00000015,
    0x0000001e,0x00000001,0x00050048,0x00000019,0x00000000,0x0000000b,0x00000000,0x00030047,
    0x00000019,0x00000002,0x00040047,0x0000001c,0x0000001e,0x00000000,0x00050048,0x0000001e,
    0x00000000,0x00000023,0x00000000,0x00050048,0x0000001e,0x00000001,0x00000023,0x00000008,
    0x00030047,0x0000001e,0x00000002,0x00020013,0x00000002,0x00030021,0x00000003,0x00000002,
    0x00030016,0x00000006,0x00000020,0x00040017,0x00000007,0x00000006,0x00000004,0x00040017,
    0x00000008,0x00000006,0x00000002,0x0004001e,0x00000009,0x00000007,0x00000008,0x00040020,
    0x0000000a,0x00000003,0x00000009,0x0004003b,0x0000000a,0x0000000b,0x00000003,0x00040015,
    0x0000000c,0x00000020,0x00000001,0x0004002b,0x0000000c,0x0000000d,0x00000000,0x00040020,
    0x0000000e,0x00000001,0x00000007,0x0004003b,0x0000000e,0x0000000f,0x00000001,0x00040020,
    0x00000011,0x00000003,0x00000007,0x0004002b,0x0000000c,0x00000013,0x00000001,0x00040020,
    0x00000014,0x00000001,0x00000008,0x0004003b,0x00000014,0x00000015,0x00000001,0x00040020,
    0x00000017,0x00000003,0x00000008,0x0003001e,0x00000019,0x00000007,0x00040020,0x0000001a,
    0x00000003,0x00000019,0x0004003b,0x0000001a,0x0000001b,0x00000003,0x0004003b,0x00000014,
    0x0000001c,0x00000001,0x0004001e,0x0000001e,0x00000008,0x00000008,0x00040020,0x0000001f,
    0x00000009,0x0000001e,0x0004003b,0x0000001f,0x00000020,0x00000009,0x00040020,0x00000021,
    0x00000009,0x00000008,0x0004002b,0x00000006,0x00000028,0x00000000,0x0004002b,0x00000006,
    0x00000029,0x3f800000,0x00050036,0x00000002,0x00000004,0x00000000,0x00000003,0x000200f8,
    0x00000005,0x0004003d,0x00000007,0x00000010,0x0000000f,0x00050041,0x00000011,0x00000012,
    0x0000000b,0x0000000d,0x0003003e,0x00000012,0x00000010,0x0004003d,0x00000008,0x00000016,
    0x00000015,0x00050041,0x00000017,0x00000018,0x0000000b,0x00000013,0x0003003e,0x00000018,
    0x00000016,0x0004003d,0x00000008,0x0000001d,0x0000001c,0x00050041,0x00000021,0x00000022,
    0x00000020,0x0000000d,0x0004003d,0x00000008,0x00000023,0x00000022,0x00050085,0x00000008,
    0x00000024,0x0000001d,0x00000023,0x00050041,0x00000021,0x00000025,0x00000020,0x00000013,
    0x0004003d,0x00000008,0x00000026,0x00000025,0x00050081,0x00000008,0x00000027,0x00000024,
    0x00000026,0x00050051,0x00000006,0x0000002a,0x00000027,0x00000000,0x00050051,0x00000006,
    0x0000002b,0x00000027,0x00000001,0x00070050,0x00000007,0x0000002c,0x0000002a,0x0000002b,
    0x00000028,0x00000029,0x00050041,0x00000011,0x0000002d,0x0000001b,0x0000000d,0x0003003e,
    0x0000002d,0x0000002c,0x000100fd,0x00010038
};

// glsl_shader.frag, compiled with:
// # glslangValidator -V -x -o glsl_shader.frag.u32 glsl_shader.frag
static uint32_t __glsl_shader_frag_spv[] =
{
    0x07230203,0x00010000,0x00080001,0x0000001e,0x00000000,0x00020011,0x00000001,0x0006000b,
    0x00000001,0x4c534c47,0x6474732e,0x3035342e,0x00000000,0x0003000e,0x00000000,0x00000001,
    0x0007000f,0x00000004,0x00000004,0x6e69616d,0x00000000,0x00000009,0x0000000d,0x00030010,
    0x00000004,0x00000007,0x00030003,0x00000002,0x000001c2,0x00040005,0x00000004,0x6e69616d,
    0x00000000,0x00040005,0x00000009,0x6c6f4366,0x0000726f,0x00030005,0x0000000b,0x00000000,
    0x00050006,0x0000000b,0x00000000,0x6f6c6f43,0x00000072,0x00040006,0x0000000b,0x00000001,
    0x00005655,0x00030005,0x0000000d,0x00006e49,0x00050005,0x00000016,0x78655473,0x65727574,
    0x00000000,0x00040047,0x00000009,0x0000001e,0x00000000,0x00040047,0x0000000d,0x0000001e,
    0x00000000,0x00040047,0x00000016,0x00000022,0x00000000,0x00040047,0x00000016,0x00000021,
    0x00000000,0x00020013,0x00000002,0x00030021,0x00000003,0x00000002,0x00030016,0x00000006,
    0x00000020,0x00040017,0x00000007,0x00000006,0x00000004,0x00040020,0x00000008,0x00000003,
    0x00000007,0x0004003b,0x00000008,0x00000009,0x00000003,0x00040017,0x0000000a,0x00000006,
    0x00000002,0x0004001e,0x0000000b,0x00000007,0x0000000a,0x00040020,0x0000000c,0x00000001,
    0x0000000b,0x0004003b,0x0000000c,0x0000000d,0x00000001,0x00040015,0x0000000e,0x00000020,
    0x00000001,0x0004002b,0x0000000e,0x0000000f,0x00000000,0x00040020,0x00000010,0x00000001,
    0x00000007,0x00090019,0x00000013,0x00000006,0x00000001,0x00000000,0x00000000,0x00000000,
    0x00000001,0x00000000,0x0003001b,0x00000014,0x00000013,0x00040020,0x00000015,0x00000000,
    0x00000014,0x0004003b,0x00000015,0x00000016,0x00000000,0x0004002b,0x0000000e,0x00000018,
    0x00000001,0x00040020,0x00000019,0x00000001,0x0000000a,0x00050036,0x00000002,0x00000004,
    0x00000000,0x00000003,0x000200f8,0x00000005,0x00050041,0x00000010,0x00000011,0x0000000d,
    0x0000000f,0x0004003d,0x00000007,0x00000012,0x00000011,0x0004003d,0x00000014,0x00000017,
    0x00000016,0x00050041,0x00000019,0x0000001a,0x0000000d,0x00000018,0x0004003d,0x0000000a,
    0x0000001b,0x0000001a,0x00050057,0x00000007,0x0000001c,0x00000017,0x0000001b,0x00050085,
    0x00000007,0x0000001d,0x00000012,0x0000001c,0x0003003e,0x00000009,0x0000001d,0x000100fd,
    0x00010038
};

static uint32_t ImGui_ImplVulkan_MemoryType(VkMemoryPropertyFlags properties, uint32_t type_bits)
{
    VkPhysicalDeviceMemoryProperties prop;
    vkGetPhysicalDeviceMemoryProperties(g_PhysicalDevice, &prop);
    for (uint32_t i = 0; i < prop.memoryTypeCount; i++)
        if ((prop.memoryTypes[i].propertyFlags & properties) == properties && type_bits & (1<<i))
            return i;
    return 0xFFFFFFFF; // Unable to find memoryType
}

static void check_vk_result(VkResult err)
{
    if (g_CheckVkResultFn)
        g_CheckVkResultFn(err);
}

static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory, VkDeviceSize& p_buffer_size, size_t new_size, VkBufferUsageFlagBits usage)
{
    VkResult err;
    if (buffer != VK_NULL_HANDLE)
        vkDestroyBuffer(g_Device, buffer, g_Allocator);
    if (buffer_memory)
        vkFreeMemory(g_Device, buffer_memory, g_Allocator);

    VkDeviceSize vertex_buffer_size_aligned = ((new_size - 1) / g_BufferMemoryAlignment + 1) * g_BufferMemoryAlignment;
    VkBufferCreateInfo buffer_info = {};
    buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
    buffer_info.size = vertex_buffer_size_aligned;
    buffer_info.usage = usage;
    buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
    err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &buffer);
    check_vk_result(err);

    VkMemoryRequirements req;
    vkGetBufferMemoryRequirements(g_Device, buffer, &req);
    g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment;
    VkMemoryAllocateInfo alloc_info = {};
    alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
    alloc_info.allocationSize = req.size;
    alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
    err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &buffer_memory);
    check_vk_result(err);

    err = vkBindBufferMemory(g_Device, buffer, buffer_memory, 0);
    check_vk_result(err);
    p_buffer_size = new_size;
}

// Render function
// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer)
{
    VkResult err;
    if (draw_data->TotalVtxCount == 0)
        return;

    FrameDataForRender* fd = &g_FramesDataBuffers[g_FrameIndex];
    g_FrameIndex = (g_FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES;

    // Create the Vertex and Index buffers:
    size_t vertex_size = draw_data->TotalVtxCount * sizeof(ImDrawVert);
    size_t index_size = draw_data->TotalIdxCount * sizeof(ImDrawIdx);
    if (!fd->VertexBuffer || fd->VertexBufferSize < vertex_size)
        CreateOrResizeBuffer(fd->VertexBuffer, fd->VertexBufferMemory, fd->VertexBufferSize, vertex_size, VK_BUFFER_USAGE_VERTEX_BUFFER_BIT);
    if (!fd->IndexBuffer || fd->IndexBufferSize < index_size)
        CreateOrResizeBuffer(fd->IndexBuffer, fd->IndexBufferMemory, fd->IndexBufferSize, index_size, VK_BUFFER_USAGE_INDEX_BUFFER_BIT);

    // Upload Vertex and index Data:
    {
        ImDrawVert* vtx_dst = NULL;
        ImDrawIdx* idx_dst = NULL;
        err = vkMapMemory(g_Device, fd->VertexBufferMemory, 0, vertex_size, 0, (void**)(&vtx_dst));
        check_vk_result(err);
        err = vkMapMemory(g_Device, fd->IndexBufferMemory, 0, index_size, 0, (void**)(&idx_dst));
        check_vk_result(err);
        for (int n = 0; n < draw_data->CmdListsCount; n++)
        {
            const ImDrawList* cmd_list = draw_data->CmdLists[n];
            memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
            memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
            vtx_dst += cmd_list->VtxBuffer.Size;
            idx_dst += cmd_list->IdxBuffer.Size;
        }
        VkMappedMemoryRange range[2] = {};
        range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
        range[0].memory = fd->VertexBufferMemory;
        range[0].size = VK_WHOLE_SIZE;
        range[1].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
        range[1].memory = fd->IndexBufferMemory;
        range[1].size = VK_WHOLE_SIZE;
        err = vkFlushMappedMemoryRanges(g_Device, 2, range);
        check_vk_result(err);
        vkUnmapMemory(g_Device, fd->VertexBufferMemory);
        vkUnmapMemory(g_Device, fd->IndexBufferMemory);
    }

    // Bind pipeline and descriptor sets:
    {
        vkCmdBindPipeline(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, g_Pipeline);
        VkDescriptorSet desc_set[1] = { g_DescriptorSet };
        vkCmdBindDescriptorSets(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, g_PipelineLayout, 0, 1, desc_set, 0, NULL);
    }

    // Bind Vertex And Index Buffer:
    {
        VkBuffer vertex_buffers[1] = { fd->VertexBuffer };
        VkDeviceSize vertex_offset[1] = { 0 };
        vkCmdBindVertexBuffers(command_buffer, 0, 1, vertex_buffers, vertex_offset);
        vkCmdBindIndexBuffer(command_buffer, fd->IndexBuffer, 0, VK_INDEX_TYPE_UINT16);
    }

    // Setup viewport:
    {
        VkViewport viewport;
        viewport.x = 0;
        viewport.y = 0;
        viewport.width = draw_data->DisplaySize.x;
        viewport.height = draw_data->DisplaySize.y;
        viewport.minDepth = 0.0f;
        viewport.maxDepth = 1.0f;
        vkCmdSetViewport(command_buffer, 0, 1, &viewport);
    }

    // Setup scale and translation:
    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
    {
        float scale[2];
        scale[0] = 2.0f / draw_data->DisplaySize.x;
        scale[1] = 2.0f / draw_data->DisplaySize.y;
        float translate[2];
        translate[0] = -1.0f - draw_data->DisplayPos.x * scale[0];
        translate[1] = -1.0f - draw_data->DisplayPos.y * scale[1];
        vkCmdPushConstants(command_buffer, g_PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, sizeof(float) * 0, sizeof(float) * 2, scale);
        vkCmdPushConstants(command_buffer, g_PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, sizeof(float) * 2, sizeof(float) * 2, translate);
    }

    // Render the command lists:
    int vtx_offset = 0;
    int idx_offset = 0;
    ImVec2 display_pos = draw_data->DisplayPos;
    for (int n = 0; n < draw_data->CmdListsCount; n++)
    {
        const ImDrawList* cmd_list = draw_data->CmdLists[n];
        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
        {
            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
            if (pcmd->UserCallback)
            {
                pcmd->UserCallback(cmd_list, pcmd);
            }
            else
            {
                // Apply scissor/clipping rectangle
                // FIXME: We could clamp width/height based on clamped min/max values.
                VkRect2D scissor;
                scissor.offset.x = (int32_t)(pcmd->ClipRect.x - display_pos.x) > 0 ? (int32_t)(pcmd->ClipRect.x - display_pos.x) : 0;
                scissor.offset.y = (int32_t)(pcmd->ClipRect.y - display_pos.y) > 0 ? (int32_t)(pcmd->ClipRect.y - display_pos.y) : 0;
                scissor.extent.width = (uint32_t)(pcmd->ClipRect.z - pcmd->ClipRect.x);
                scissor.extent.height = (uint32_t)(pcmd->ClipRect.w - pcmd->ClipRect.y + 1); // FIXME: Why +1 here?
                vkCmdSetScissor(command_buffer, 0, 1, &scissor);
                
                // Draw
                vkCmdDrawIndexed(command_buffer, pcmd->ElemCount, 1, idx_offset, vtx_offset, 0);
            }
            idx_offset += pcmd->ElemCount;
        }
        vtx_offset += cmd_list->VtxBuffer.Size;
    }
}

bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer)
{
    ImGuiIO& io = ImGui::GetIO();

    unsigned char* pixels;
    int width, height;
    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
    size_t upload_size = width*height*4*sizeof(char);

    VkResult err;

    // Create the Image:
    {
        VkImageCreateInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
        info.imageType = VK_IMAGE_TYPE_2D;
        info.format = VK_FORMAT_R8G8B8A8_UNORM;
        info.extent.width = width;
        info.extent.height = height;
        info.extent.depth = 1;
        info.mipLevels = 1;
        info.arrayLayers = 1;
        info.samples = VK_SAMPLE_COUNT_1_BIT;
        info.tiling = VK_IMAGE_TILING_OPTIMAL;
        info.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
        info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
        info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
        err = vkCreateImage(g_Device, &info, g_Allocator, &g_FontImage);
        check_vk_result(err);
        VkMemoryRequirements req;
        vkGetImageMemoryRequirements(g_Device, g_FontImage, &req);
        VkMemoryAllocateInfo alloc_info = {};
        alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
        alloc_info.allocationSize = req.size;
        alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, req.memoryTypeBits);
        err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_FontMemory);
        check_vk_result(err);
        err = vkBindImageMemory(g_Device, g_FontImage, g_FontMemory, 0);
        check_vk_result(err);
    }

    // Create the Image View:
    {
        VkImageViewCreateInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
        info.image = g_FontImage;
        info.viewType = VK_IMAGE_VIEW_TYPE_2D;
        info.format = VK_FORMAT_R8G8B8A8_UNORM;
        info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
        info.subresourceRange.levelCount = 1;
        info.subresourceRange.layerCount = 1;
        err = vkCreateImageView(g_Device, &info, g_Allocator, &g_FontView);
        check_vk_result(err);
    }

    // Update the Descriptor Set:
    {
        VkDescriptorImageInfo desc_image[1] = {};
        desc_image[0].sampler = g_FontSampler;
        desc_image[0].imageView = g_FontView;
        desc_image[0].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
        VkWriteDescriptorSet write_desc[1] = {};
        write_desc[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
        write_desc[0].dstSet = g_DescriptorSet;
        write_desc[0].descriptorCount = 1;
        write_desc[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
        write_desc[0].pImageInfo = desc_image;
        vkUpdateDescriptorSets(g_Device, 1, write_desc, 0, NULL);
    }

    // Create the Upload Buffer:
    {
        VkBufferCreateInfo buffer_info = {};
        buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
        buffer_info.size = upload_size;
        buffer_info.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
        buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
        err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &g_UploadBuffer);
        check_vk_result(err);
        VkMemoryRequirements req;
        vkGetBufferMemoryRequirements(g_Device, g_UploadBuffer, &req);
        g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment;
        VkMemoryAllocateInfo alloc_info = {};
        alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
        alloc_info.allocationSize = req.size;
        alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
        err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_UploadBufferMemory);
        check_vk_result(err);
        err = vkBindBufferMemory(g_Device, g_UploadBuffer, g_UploadBufferMemory, 0);
        check_vk_result(err);
    }

    // Upload to Buffer:
    {
        char* map = NULL;
        err = vkMapMemory(g_Device, g_UploadBufferMemory, 0, upload_size, 0, (void**)(&map));
        check_vk_result(err);
        memcpy(map, pixels, upload_size);
        VkMappedMemoryRange range[1] = {};
        range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
        range[0].memory = g_UploadBufferMemory;
        range[0].size = upload_size;
        err = vkFlushMappedMemoryRanges(g_Device, 1, range);
        check_vk_result(err);
        vkUnmapMemory(g_Device, g_UploadBufferMemory);
    }

    // Copy to Image:
    {
        VkImageMemoryBarrier copy_barrier[1] = {};
        copy_barrier[0].sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
        copy_barrier[0].dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
        copy_barrier[0].oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
        copy_barrier[0].newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
        copy_barrier[0].srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
        copy_barrier[0].dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
        copy_barrier[0].image = g_FontImage;
        copy_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
        copy_barrier[0].subresourceRange.levelCount = 1;
        copy_barrier[0].subresourceRange.layerCount = 1;
        vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_HOST_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, NULL, 0, NULL, 1, copy_barrier);

        VkBufferImageCopy region = {};
        region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
        region.imageSubresource.layerCount = 1;
        region.imageExtent.width = width;
        region.imageExtent.height = height;
        region.imageExtent.depth = 1;
        vkCmdCopyBufferToImage(command_buffer, g_UploadBuffer, g_FontImage, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);

        VkImageMemoryBarrier use_barrier[1] = {};
        use_barrier[0].sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
        use_barrier[0].srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
        use_barrier[0].dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
        use_barrier[0].oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
        use_barrier[0].newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
        use_barrier[0].srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
        use_barrier[0].dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
        use_barrier[0].image = g_FontImage;
        use_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
        use_barrier[0].subresourceRange.levelCount = 1;
        use_barrier[0].subresourceRange.layerCount = 1;
        vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0, 0, NULL, 0, NULL, 1, use_barrier);
    }

    // Store our identifier
    io.Fonts->TexID = (ImTextureID)(intptr_t)g_FontImage;

    return true;
}

bool ImGui_ImplVulkan_CreateDeviceObjects()
{
    VkResult err;
    VkShaderModule vert_module;
    VkShaderModule frag_module;

    // Create The Shader Modules:
    {
        VkShaderModuleCreateInfo vert_info = {};
        vert_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
        vert_info.codeSize = sizeof(__glsl_shader_vert_spv);
        vert_info.pCode = (uint32_t*)__glsl_shader_vert_spv;
        err = vkCreateShaderModule(g_Device, &vert_info, g_Allocator, &vert_module);
        check_vk_result(err);
        VkShaderModuleCreateInfo frag_info = {};
        frag_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
        frag_info.codeSize = sizeof(__glsl_shader_frag_spv);
        frag_info.pCode = (uint32_t*)__glsl_shader_frag_spv;
        err = vkCreateShaderModule(g_Device, &frag_info, g_Allocator, &frag_module);
        check_vk_result(err);
    }

    if (!g_FontSampler)
    {
        VkSamplerCreateInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
        info.magFilter = VK_FILTER_LINEAR;
        info.minFilter = VK_FILTER_LINEAR;
        info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
        info.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
        info.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
        info.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
        info.minLod = -1000;
        info.maxLod = 1000;
        info.maxAnisotropy = 1.0f;
        err = vkCreateSampler(g_Device, &info, g_Allocator, &g_FontSampler);
        check_vk_result(err);
    }

    if (!g_DescriptorSetLayout)
    {
        VkSampler sampler[1] = {g_FontSampler};
        VkDescriptorSetLayoutBinding binding[1] = {};
        binding[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
        binding[0].descriptorCount = 1;
        binding[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
        binding[0].pImmutableSamplers = sampler;
        VkDescriptorSetLayoutCreateInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
        info.bindingCount = 1;
        info.pBindings = binding;
        err = vkCreateDescriptorSetLayout(g_Device, &info, g_Allocator, &g_DescriptorSetLayout);
        check_vk_result(err);
    }

    // Create Descriptor Set:
    {
        VkDescriptorSetAllocateInfo alloc_info = {};
        alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
        alloc_info.descriptorPool = g_DescriptorPool;
        alloc_info.descriptorSetCount = 1;
        alloc_info.pSetLayouts = &g_DescriptorSetLayout;
        err = vkAllocateDescriptorSets(g_Device, &alloc_info, &g_DescriptorSet);
        check_vk_result(err);
    }

    if (!g_PipelineLayout)
    {
        // Constants: we are using 'vec2 offset' and 'vec2 scale' instead of a full 3d projection matrix
        VkPushConstantRange push_constants[1] = {};
        push_constants[0].stageFlags = VK_SHADER_STAGE_VERTEX_BIT;
        push_constants[0].offset = sizeof(float) * 0;
        push_constants[0].size = sizeof(float) * 4;
        VkDescriptorSetLayout set_layout[1] = { g_DescriptorSetLayout };
        VkPipelineLayoutCreateInfo layout_info = {};
        layout_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
        layout_info.setLayoutCount = 1;
        layout_info.pSetLayouts = set_layout;
        layout_info.pushConstantRangeCount = 1;
        layout_info.pPushConstantRanges = push_constants;
        err = vkCreatePipelineLayout(g_Device, &layout_info, g_Allocator, &g_PipelineLayout);
        check_vk_result(err);
    }

    VkPipelineShaderStageCreateInfo stage[2] = {};
    stage[0].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
    stage[0].stage = VK_SHADER_STAGE_VERTEX_BIT;
    stage[0].module = vert_module;
    stage[0].pName = "main";
    stage[1].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
    stage[1].stage = VK_SHADER_STAGE_FRAGMENT_BIT;
    stage[1].module = frag_module;
    stage[1].pName = "main";

    VkVertexInputBindingDescription binding_desc[1] = {};
    binding_desc[0].stride = sizeof(ImDrawVert);
    binding_desc[0].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;

    VkVertexInputAttributeDescription attribute_desc[3] = {};
    attribute_desc[0].location = 0;
    attribute_desc[0].binding = binding_desc[0].binding;
    attribute_desc[0].format = VK_FORMAT_R32G32_SFLOAT;
    attribute_desc[0].offset = IM_OFFSETOF(ImDrawVert, pos);
    attribute_desc[1].location = 1;
    attribute_desc[1].binding = binding_desc[0].binding;
    attribute_desc[1].format = VK_FORMAT_R32G32_SFLOAT;
    attribute_desc[1].offset = IM_OFFSETOF(ImDrawVert, uv);
    attribute_desc[2].location = 2;
    attribute_desc[2].binding = binding_desc[0].binding;
    attribute_desc[2].format = VK_FORMAT_R8G8B8A8_UNORM;
    attribute_desc[2].offset = IM_OFFSETOF(ImDrawVert, col);

    VkPipelineVertexInputStateCreateInfo vertex_info = {};
    vertex_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
    vertex_info.vertexBindingDescriptionCount = 1;
    vertex_info.pVertexBindingDescriptions = binding_desc;
    vertex_info.vertexAttributeDescriptionCount = 3;
    vertex_info.pVertexAttributeDescriptions = attribute_desc;

    VkPipelineInputAssemblyStateCreateInfo ia_info = {};
    ia_info.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
    ia_info.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;

    VkPipelineViewportStateCreateInfo viewport_info = {};
    viewport_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
    viewport_info.viewportCount = 1;
    viewport_info.scissorCount = 1;

    VkPipelineRasterizationStateCreateInfo raster_info = {};
    raster_info.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
    raster_info.polygonMode = VK_POLYGON_MODE_FILL;
    raster_info.cullMode = VK_CULL_MODE_NONE;
    raster_info.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
    raster_info.lineWidth = 1.0f;

    VkPipelineMultisampleStateCreateInfo ms_info = {};
    ms_info.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
    ms_info.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;

    VkPipelineColorBlendAttachmentState color_attachment[1] = {};
    color_attachment[0].blendEnable = VK_TRUE;
    color_attachment[0].srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
    color_attachment[0].dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
    color_attachment[0].colorBlendOp = VK_BLEND_OP_ADD;
    color_attachment[0].srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
    color_attachment[0].dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
    color_attachment[0].alphaBlendOp = VK_BLEND_OP_ADD;
    color_attachment[0].colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;

    VkPipelineDepthStencilStateCreateInfo depth_info = {};
    depth_info.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;

    VkPipelineColorBlendStateCreateInfo blend_info = {};
    blend_info.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
    blend_info.attachmentCount = 1;
    blend_info.pAttachments = color_attachment;

    VkDynamicState dynamic_states[2] = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
    VkPipelineDynamicStateCreateInfo dynamic_state = {};
    dynamic_state.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
    dynamic_state.dynamicStateCount = (uint32_t)IM_ARRAYSIZE(dynamic_states);
    dynamic_state.pDynamicStates = dynamic_states;

    VkGraphicsPipelineCreateInfo info = {};
    info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
    info.flags = g_PipelineCreateFlags;
    info.stageCount = 2;
    info.pStages = stage;
    info.pVertexInputState = &vertex_info;
    info.pInputAssemblyState = &ia_info;
    info.pViewportState = &viewport_info;
    info.pRasterizationState = &raster_info;
    info.pMultisampleState = &ms_info;
    info.pDepthStencilState = &depth_info;
    info.pColorBlendState = &blend_info;
    info.pDynamicState = &dynamic_state;
    info.layout = g_PipelineLayout;
    info.renderPass = g_RenderPass;
    err = vkCreateGraphicsPipelines(g_Device, g_PipelineCache, 1, &info, g_Allocator, &g_Pipeline);
    check_vk_result(err);

    vkDestroyShaderModule(g_Device, vert_module, g_Allocator);
    vkDestroyShaderModule(g_Device, frag_module, g_Allocator);

    return true;
}

void    ImGui_ImplVulkan_InvalidateFontUploadObjects()
{
    if (g_UploadBuffer)
    {
        vkDestroyBuffer(g_Device, g_UploadBuffer, g_Allocator);
        g_UploadBuffer = VK_NULL_HANDLE;
    }
    if (g_UploadBufferMemory)
    {
        vkFreeMemory(g_Device, g_UploadBufferMemory, g_Allocator);
        g_UploadBufferMemory = VK_NULL_HANDLE;
    }
}

void    ImGui_ImplVulkan_InvalidateDeviceObjects()
{
    ImGui_ImplVulkan_InvalidateFontUploadObjects();

    for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++)
    {
        FrameDataForRender* fd = &g_FramesDataBuffers[i];
        if (fd->VertexBuffer)       { vkDestroyBuffer   (g_Device, fd->VertexBuffer,        g_Allocator); fd->VertexBuffer = VK_NULL_HANDLE; }
        if (fd->VertexBufferMemory) { vkFreeMemory      (g_Device, fd->VertexBufferMemory,  g_Allocator); fd->VertexBufferMemory = VK_NULL_HANDLE; }
        if (fd->IndexBuffer)        { vkDestroyBuffer   (g_Device, fd->IndexBuffer,         g_Allocator); fd->IndexBuffer = VK_NULL_HANDLE; }
        if (fd->IndexBufferMemory)  { vkFreeMemory      (g_Device, fd->IndexBufferMemory,   g_Allocator); fd->IndexBufferMemory = VK_NULL_HANDLE; }
    }

    if (g_FontView)             { vkDestroyImageView(g_Device, g_FontView, g_Allocator); g_FontView = VK_NULL_HANDLE; }
    if (g_FontImage)            { vkDestroyImage(g_Device, g_FontImage, g_Allocator); g_FontImage = VK_NULL_HANDLE; }
    if (g_FontMemory)           { vkFreeMemory(g_Device, g_FontMemory, g_Allocator); g_FontMemory = VK_NULL_HANDLE; }
    if (g_FontSampler)          { vkDestroySampler(g_Device, g_FontSampler, g_Allocator); g_FontSampler = VK_NULL_HANDLE; }
    if (g_DescriptorSetLayout)  { vkDestroyDescriptorSetLayout(g_Device, g_DescriptorSetLayout, g_Allocator); g_DescriptorSetLayout = VK_NULL_HANDLE; }
    if (g_PipelineLayout)       { vkDestroyPipelineLayout(g_Device, g_PipelineLayout, g_Allocator); g_PipelineLayout = VK_NULL_HANDLE; }
    if (g_Pipeline)             { vkDestroyPipeline(g_Device, g_Pipeline, g_Allocator); g_Pipeline = VK_NULL_HANDLE; }
}

bool    ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass)
{
    IM_ASSERT(info->Instance != VK_NULL_HANDLE);
    IM_ASSERT(info->PhysicalDevice != VK_NULL_HANDLE);
    IM_ASSERT(info->Device != VK_NULL_HANDLE);
    IM_ASSERT(info->Queue != VK_NULL_HANDLE);
    IM_ASSERT(info->DescriptorPool != VK_NULL_HANDLE);
    IM_ASSERT(render_pass != VK_NULL_HANDLE);

    g_Instance = info->Instance;
    g_PhysicalDevice = info->PhysicalDevice;
    g_Device = info->Device;
    g_QueueFamily = info->QueueFamily;
    g_Queue = info->Queue;
    g_RenderPass = render_pass;
    g_PipelineCache = info->PipelineCache;
    g_DescriptorPool = info->DescriptorPool;
    g_Allocator = info->Allocator;
    g_CheckVkResultFn = info->CheckVkResultFn;

    ImGui_ImplVulkan_CreateDeviceObjects();

    return true;
}

void ImGui_ImplVulkan_Shutdown()
{
    ImGui_ImplVulkan_InvalidateDeviceObjects();
}

void ImGui_ImplVulkan_NewFrame()
{
}


//-------------------------------------------------------------------------
// Internal / Miscellaneous Vulkan Helpers
//-------------------------------------------------------------------------
// You probably do NOT need to use or care about those functions. 
// Those functions only exist because:
//   1) they facilitate the readability and maintenance of the multiple main.cpp examples files.
//   2) the upcoming multi-viewport feature will need them internally.
// Generally we avoid exposing any kind of superfluous high-level helpers in the bindings, 
// but it is too much code to duplicate everywhere so we exceptionally expose them.
// Your application/engine will likely already have code to setup all that stuff (swap chain, render pass, frame buffers, etc.).
// You may read this code to learn about Vulkan, but it is recommended you use you own custom tailored code to do equivalent work.
// (those functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions)
//-------------------------------------------------------------------------

#include <stdlib.h> // malloc

ImGui_ImplVulkanH_FrameData::ImGui_ImplVulkanH_FrameData()
{
    BackbufferIndex = 0;
    CommandPool = VK_NULL_HANDLE;
    CommandBuffer = VK_NULL_HANDLE;
    Fence = VK_NULL_HANDLE;
    ImageAcquiredSemaphore = VK_NULL_HANDLE;
    RenderCompleteSemaphore = VK_NULL_HANDLE;
}

ImGui_ImplVulkanH_WindowData::ImGui_ImplVulkanH_WindowData()
{
    Width = Height = 0;
    Swapchain = VK_NULL_HANDLE;
    Surface = VK_NULL_HANDLE;
    memset(&SurfaceFormat, 0, sizeof(SurfaceFormat));
    PresentMode = VK_PRESENT_MODE_MAX_ENUM_KHR;
    RenderPass = VK_NULL_HANDLE;
    ClearEnable = true;
    memset(&ClearValue, 0, sizeof(ClearValue));
    BackBufferCount = 0;
    memset(&BackBuffer, 0, sizeof(BackBuffer));
    memset(&BackBufferView, 0, sizeof(BackBufferView));
    memset(&Framebuffer, 0, sizeof(Framebuffer));
    FrameIndex = 0;
}

VkSurfaceFormatKHR ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space)
{
    IM_ASSERT(request_formats != NULL);
    IM_ASSERT(request_formats_count > 0);

    // Per Spec Format and View Format are expected to be the same unless VK_IMAGE_CREATE_MUTABLE_BIT was set at image creation
    // Assuming that the default behavior is without setting this bit, there is no need for separate Swapchain image and image view format
    // Additionally several new color spaces were introduced with Vulkan Spec v1.0.40,
    // hence we must make sure that a format with the mostly available color space, VK_COLOR_SPACE_SRGB_NONLINEAR_KHR, is found and used.
    uint32_t avail_count;
    vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &avail_count, NULL);
    ImVector<VkSurfaceFormatKHR> avail_format;
    avail_format.resize((int)avail_count);
    vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &avail_count, avail_format.Data);

    // First check if only one format, VK_FORMAT_UNDEFINED, is available, which would imply that any format is available
    if (avail_count == 1)
    {
        if (avail_format[0].format == VK_FORMAT_UNDEFINED)
        {
            VkSurfaceFormatKHR ret;
            ret.format = request_formats[0];
            ret.colorSpace = request_color_space;
            return ret;
        }
        else
        {
            // No point in searching another format
            return avail_format[0];
        }
    }
    else
    {
        // Request several formats, the first found will be used 
        for (int request_i = 0; request_i < request_formats_count; request_i++)
            for (uint32_t avail_i = 0; avail_i < avail_count; avail_i++)
                if (avail_format[avail_i].format == request_formats[request_i] && avail_format[avail_i].colorSpace == request_color_space)
                    return avail_format[avail_i];

        // If none of the requested image formats could be found, use the first available
        return avail_format[0];
    }
}

VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count)
{
    IM_ASSERT(request_modes != NULL);
    IM_ASSERT(request_modes_count > 0);

    // Request a certain mode and confirm that it is available. If not use VK_PRESENT_MODE_FIFO_KHR which is mandatory
    uint32_t avail_count = 0;
    vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &avail_count, NULL);
    ImVector<VkPresentModeKHR> avail_modes;
    avail_modes.resize((int)avail_count);
    vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &avail_count, avail_modes.Data);
    //for (uint32_t avail_i = 0; avail_i < avail_count; avail_i++)
    //    printf("[vulkan] avail_modes[%d] = %d\n", avail_i, avail_modes[avail_i]);

    for (int request_i = 0; request_i < request_modes_count; request_i++)
        for (uint32_t avail_i = 0; avail_i < avail_count; avail_i++)
            if (request_modes[request_i] == avail_modes[avail_i])
                return request_modes[request_i];

    return VK_PRESENT_MODE_FIFO_KHR; // Always available
}

void ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, uint32_t queue_family, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator)
{
    IM_ASSERT(physical_device != VK_NULL_HANDLE && device != VK_NULL_HANDLE);
    (void)allocator;

    // Create Command Buffers
    VkResult err;
    for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++)
    {
        ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[i];
        {
            VkCommandPoolCreateInfo info = {};
            info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
            info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
            info.queueFamilyIndex = queue_family;
            err = vkCreateCommandPool(device, &info, allocator, &fd->CommandPool);
            check_vk_result(err);
        }
        {
            VkCommandBufferAllocateInfo info = {};
            info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
            info.commandPool = fd->CommandPool;
            info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
            info.commandBufferCount = 1;
            err = vkAllocateCommandBuffers(device, &info, &fd->CommandBuffer);
            check_vk_result(err);
        }
        {
            VkFenceCreateInfo info = {};
            info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
            info.flags = VK_FENCE_CREATE_SIGNALED_BIT;
            err = vkCreateFence(device, &info, allocator, &fd->Fence);
            check_vk_result(err);
        }
        {
            VkSemaphoreCreateInfo info = {};
            info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
            err = vkCreateSemaphore(device, &info, allocator, &fd->ImageAcquiredSemaphore);
            check_vk_result(err);
            err = vkCreateSemaphore(device, &info, allocator, &fd->RenderCompleteSemaphore);
            check_vk_result(err);
        }
    }
}

int ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(VkPresentModeKHR present_mode)
{
    if (present_mode == VK_PRESENT_MODE_MAILBOX_KHR)
        return 3;
    if (present_mode == VK_PRESENT_MODE_FIFO_KHR || present_mode == VK_PRESENT_MODE_FIFO_RELAXED_KHR)
        return 2;
    if (present_mode == VK_PRESENT_MODE_IMMEDIATE_KHR)
        return 1;
    IM_ASSERT(0);
    return 1;
}

void ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h)
{
    uint32_t min_image_count = 2;	// FIXME: this should become a function parameter

    VkResult err;
    VkSwapchainKHR old_swapchain = wd->Swapchain;
    err = vkDeviceWaitIdle(device);
    check_vk_result(err);

    // Destroy old Framebuffer
    for (uint32_t i = 0; i < wd->BackBufferCount; i++)
    {
        if (wd->BackBufferView[i])
            vkDestroyImageView(device, wd->BackBufferView[i], allocator);
        if (wd->Framebuffer[i])
            vkDestroyFramebuffer(device, wd->Framebuffer[i], allocator);
    }
    wd->BackBufferCount = 0;
    if (wd->RenderPass)
        vkDestroyRenderPass(device, wd->RenderPass, allocator);
   
    // If min image count was not specified, request different count of images dependent on selected present mode
    if (min_image_count == 0)
        min_image_count = ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(wd->PresentMode);

    // Create Swapchain
    {
        VkSwapchainCreateInfoKHR info = {};
        info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
        info.surface = wd->Surface;
		info.minImageCount = min_image_count;
        info.imageFormat = wd->SurfaceFormat.format;
        info.imageColorSpace = wd->SurfaceFormat.colorSpace;
        info.imageArrayLayers = 1;
        info.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
        info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;           // Assume that graphics family == present family
        info.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
        info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
        info.presentMode = wd->PresentMode;
        info.clipped = VK_TRUE;
        info.oldSwapchain = old_swapchain;
        VkSurfaceCapabilitiesKHR cap;
        err = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physical_device, wd->Surface, &cap);
        check_vk_result(err);
        if (info.minImageCount < cap.minImageCount)
			info.minImageCount = cap.minImageCount;
		else if (cap.maxImageCount != 0 && info.minImageCount > cap.maxImageCount)
			info.minImageCount = cap.maxImageCount;

        if (cap.currentExtent.width == 0xffffffff)
        {
            info.imageExtent.width = wd->Width = w;
            info.imageExtent.height = wd->Height = h;
        }
        else
        {
            info.imageExtent.width = wd->Width = cap.currentExtent.width;
            info.imageExtent.height = wd->Height = cap.currentExtent.height;
        }
        err = vkCreateSwapchainKHR(device, &info, allocator, &wd->Swapchain);
        check_vk_result(err);
        err = vkGetSwapchainImagesKHR(device, wd->Swapchain, &wd->BackBufferCount, NULL);
        check_vk_result(err);
        err = vkGetSwapchainImagesKHR(device, wd->Swapchain, &wd->BackBufferCount, wd->BackBuffer);
        check_vk_result(err);
    }
    if (old_swapchain)
        vkDestroySwapchainKHR(device, old_swapchain, allocator);

    // Create the Render Pass
    {
        VkAttachmentDescription attachment = {};
        attachment.format = wd->SurfaceFormat.format;
        attachment.samples = VK_SAMPLE_COUNT_1_BIT;
        attachment.loadOp = wd->ClearEnable ? VK_ATTACHMENT_LOAD_OP_CLEAR : VK_ATTACHMENT_LOAD_OP_DONT_CARE;
        attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
        attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
        attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
        attachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
        attachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
        VkAttachmentReference color_attachment = {};
        color_attachment.attachment = 0;
        color_attachment.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
        VkSubpassDescription subpass = {};
        subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
        subpass.colorAttachmentCount = 1;
        subpass.pColorAttachments = &color_attachment;
        VkSubpassDependency dependency = {};
        dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
        dependency.dstSubpass = 0;
        dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
        dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
        dependency.srcAccessMask = 0;
        dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
        VkRenderPassCreateInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
        info.attachmentCount = 1;
        info.pAttachments = &attachment;
        info.subpassCount = 1;
        info.pSubpasses = &subpass;
        info.dependencyCount = 1;
        info.pDependencies = &dependency;
        err = vkCreateRenderPass(device, &info, allocator, &wd->RenderPass);
        check_vk_result(err);
    }

    // Create The Image Views
    {
        VkImageViewCreateInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
        info.viewType = VK_IMAGE_VIEW_TYPE_2D;
        info.format = wd->SurfaceFormat.format;
        info.components.r = VK_COMPONENT_SWIZZLE_R;
        info.components.g = VK_COMPONENT_SWIZZLE_G;
        info.components.b = VK_COMPONENT_SWIZZLE_B;
        info.components.a = VK_COMPONENT_SWIZZLE_A;
        VkImageSubresourceRange image_range = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 };
        info.subresourceRange = image_range;
        for (uint32_t i = 0; i < wd->BackBufferCount; i++)
        {
            info.image = wd->BackBuffer[i];
            err = vkCreateImageView(device, &info, allocator, &wd->BackBufferView[i]);
            check_vk_result(err);
        }
    }

    // Create Framebuffer
    {
        VkImageView attachment[1];
        VkFramebufferCreateInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
        info.renderPass = wd->RenderPass;
        info.attachmentCount = 1;
        info.pAttachments = attachment;
        info.width = wd->Width;
        info.height = wd->Height;
        info.layers = 1;
        for (uint32_t i = 0; i < wd->BackBufferCount; i++)
        {
            attachment[0] = wd->BackBufferView[i];
            err = vkCreateFramebuffer(device, &info, allocator, &wd->Framebuffer[i]);
            check_vk_result(err);
        }
    }
}

void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator)
{
    vkDeviceWaitIdle(device); // FIXME: We could wait on the Queue if we had the queue in wd-> (otherwise VulkanH functions can't use globals)
    //vkQueueWaitIdle(g_Queue);

    for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++)
    {
        ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[i];
        vkDestroyFence(device, fd->Fence, allocator);
        vkFreeCommandBuffers(device, fd->CommandPool, 1, &fd->CommandBuffer);
        vkDestroyCommandPool(device, fd->CommandPool, allocator);
        vkDestroySemaphore(device, fd->ImageAcquiredSemaphore, allocator);
        vkDestroySemaphore(device, fd->RenderCompleteSemaphore, allocator);
    }
    for (uint32_t i = 0; i < wd->BackBufferCount; i++)
    {
        vkDestroyImageView(device, wd->BackBufferView[i], allocator);
        vkDestroyFramebuffer(device, wd->Framebuffer[i], allocator);
    }
    vkDestroyRenderPass(device, wd->RenderPass, allocator);
    vkDestroySwapchainKHR(device, wd->Swapchain, allocator);
    vkDestroySurfaceKHR(instance, wd->Surface, allocator);
    *wd = ImGui_ImplVulkanH_WindowData();
}