595 lines
23 KiB
C++
595 lines
23 KiB
C++
// ImGui - standalone example application for Glfw + Vulkan, using programmable pipeline
|
|
// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
|
|
|
|
#include <imgui.h>
|
|
|
|
#include <stdio.h> // printf, fprintf
|
|
#include <stdlib.h> // abort
|
|
#define GLFW_INCLUDE_NONE
|
|
#define GLFW_INCLUDE_VULKAN
|
|
#include <GLFW/glfw3.h>
|
|
|
|
#include "imgui_impl_glfw_vulkan.h"
|
|
|
|
#define IMGUI_MAX_POSSIBLE_BACK_BUFFERS 16
|
|
|
|
static VkAllocationCallbacks* g_Allocator = NULL;
|
|
static VkInstance g_Instance = VK_NULL_HANDLE;
|
|
static VkSurfaceKHR g_Surface = VK_NULL_HANDLE;
|
|
static VkPhysicalDevice g_Gpu = VK_NULL_HANDLE;
|
|
static VkDevice g_Device = VK_NULL_HANDLE;
|
|
static VkSwapchainKHR g_Swapchain = VK_NULL_HANDLE;
|
|
static VkRenderPass g_RenderPass = VK_NULL_HANDLE;
|
|
static uint32_t g_QueueFamily = 0;
|
|
static VkQueue g_Queue = VK_NULL_HANDLE;
|
|
|
|
static VkFormat g_ImageFormat = VK_FORMAT_B8G8R8A8_UNORM;
|
|
static VkFormat g_ViewFormat = VK_FORMAT_B8G8R8A8_UNORM;
|
|
static VkColorSpaceKHR g_ColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
|
|
static VkImageSubresourceRange g_ImageRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1};
|
|
|
|
static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
|
|
static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
|
|
|
|
static int fb_width, fb_height;
|
|
static uint32_t g_BackBufferIndex = 0;
|
|
static uint32_t g_BackBufferCount = 0;
|
|
static VkImage g_BackBuffer[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
|
|
static VkImageView g_BackBufferView[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
|
|
static VkFramebuffer g_Framebuffer[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
|
|
|
|
static uint32_t g_FrameIndex = 0;
|
|
static VkCommandPool g_CommandPool[IMGUI_VK_QUEUED_FRAMES];
|
|
static VkCommandBuffer g_CommandBuffer[IMGUI_VK_QUEUED_FRAMES];
|
|
static VkFence g_Fence[IMGUI_VK_QUEUED_FRAMES];
|
|
static VkSemaphore g_Semaphore[IMGUI_VK_QUEUED_FRAMES];
|
|
|
|
static VkClearValue g_ClearValue = {};
|
|
|
|
static void check_vk_result(VkResult err)
|
|
{
|
|
if (err == 0) return;
|
|
printf("VkResult %d\n", err);
|
|
if (err < 0)
|
|
abort();
|
|
}
|
|
|
|
static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
|
|
{
|
|
VkResult err;
|
|
VkSwapchainKHR old_swapchain = g_Swapchain;
|
|
err = vkDeviceWaitIdle(g_Device);
|
|
check_vk_result(err);
|
|
|
|
// Destroy old Framebuffer:
|
|
for (uint32_t i = 0; i < g_BackBufferCount; i++)
|
|
if (g_BackBufferView[i])
|
|
vkDestroyImageView(g_Device, g_BackBufferView[i], g_Allocator);
|
|
for (uint32_t i = 0; i < g_BackBufferCount; i++)
|
|
if (g_Framebuffer[i])
|
|
vkDestroyFramebuffer(g_Device, g_Framebuffer[i], g_Allocator);
|
|
if (g_RenderPass)
|
|
vkDestroyRenderPass(g_Device, g_RenderPass, g_Allocator);
|
|
|
|
// Create Swapchain:
|
|
{
|
|
VkSwapchainCreateInfoKHR info = {};
|
|
info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
|
|
info.surface = g_Surface;
|
|
info.imageFormat = g_ImageFormat;
|
|
info.imageColorSpace = g_ColorSpace;
|
|
info.imageArrayLayers = 1;
|
|
info.imageUsage |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
|
|
info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
|
|
info.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
|
|
info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
|
|
info.presentMode = VK_PRESENT_MODE_FIFO_KHR;
|
|
info.clipped = VK_TRUE;
|
|
info.oldSwapchain = old_swapchain;
|
|
VkSurfaceCapabilitiesKHR cap;
|
|
err = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(g_Gpu, g_Surface, &cap);
|
|
check_vk_result(err);
|
|
if (cap.maxImageCount > 0)
|
|
info.minImageCount = (cap.minImageCount + 2 < cap.maxImageCount) ? (cap.minImageCount + 2) : cap.maxImageCount;
|
|
else
|
|
info.minImageCount = cap.minImageCount + 2;
|
|
if (cap.currentExtent.width == 0xffffffff)
|
|
{
|
|
fb_width = w;
|
|
fb_height = h;
|
|
info.imageExtent.width = fb_width;
|
|
info.imageExtent.height = fb_height;
|
|
}
|
|
else
|
|
{
|
|
fb_width = cap.currentExtent.width;
|
|
fb_height = cap.currentExtent.height;
|
|
info.imageExtent.width = fb_width;
|
|
info.imageExtent.height = fb_height;
|
|
}
|
|
err = vkCreateSwapchainKHR(g_Device, &info, g_Allocator, &g_Swapchain);
|
|
check_vk_result(err);
|
|
err = vkGetSwapchainImagesKHR(g_Device, g_Swapchain, &g_BackBufferCount, NULL);
|
|
check_vk_result(err);
|
|
err = vkGetSwapchainImagesKHR(g_Device, g_Swapchain, &g_BackBufferCount, g_BackBuffer);
|
|
check_vk_result(err);
|
|
}
|
|
if (old_swapchain)
|
|
vkDestroySwapchainKHR(g_Device, old_swapchain, g_Allocator);
|
|
|
|
// Create the Render Pass:
|
|
{
|
|
VkAttachmentDescription attachment = {};
|
|
attachment.format = g_ViewFormat;
|
|
attachment.samples = VK_SAMPLE_COUNT_1_BIT;
|
|
attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
|
|
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_COLOR_ATTACHMENT_OPTIMAL;
|
|
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;
|
|
VkRenderPassCreateInfo info = {};
|
|
info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
|
|
info.attachmentCount = 1;
|
|
info.pAttachments = &attachment;
|
|
info.subpassCount = 1;
|
|
info.pSubpasses = &subpass;
|
|
err = vkCreateRenderPass(g_Device, &info, g_Allocator, &g_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 = g_ViewFormat;
|
|
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;
|
|
info.subresourceRange = g_ImageRange;
|
|
for (uint32_t i = 0; i < g_BackBufferCount; i++)
|
|
{
|
|
info.image = g_BackBuffer[i];
|
|
err = vkCreateImageView(g_Device, &info, g_Allocator, &g_BackBufferView[i]);
|
|
check_vk_result(err);
|
|
}
|
|
}
|
|
|
|
// Create Framebuffer:
|
|
{
|
|
VkImageView attachment[1];
|
|
VkFramebufferCreateInfo info = {};
|
|
info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
|
|
info.renderPass = g_RenderPass;
|
|
info.attachmentCount = 1;
|
|
info.pAttachments = attachment;
|
|
info.width = fb_width;
|
|
info.height = fb_height;
|
|
info.layers = 1;
|
|
for (uint32_t i = 0; i < g_BackBufferCount; i++)
|
|
{
|
|
attachment[0] = g_BackBufferView[i];
|
|
err = vkCreateFramebuffer(g_Device, &info, g_Allocator, &g_Framebuffer[i]);
|
|
check_vk_result(err);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void setup_vulkan(GLFWwindow* window)
|
|
{
|
|
VkResult err;
|
|
|
|
// Create Vulkan Instance
|
|
{
|
|
uint32_t glfw_extensions_count;
|
|
const char** glfw_extensions = glfwGetRequiredInstanceExtensions(&glfw_extensions_count);
|
|
VkInstanceCreateInfo create_info = {};
|
|
create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
|
|
create_info.enabledExtensionCount = glfw_extensions_count;
|
|
create_info.ppEnabledExtensionNames = glfw_extensions;
|
|
err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
|
|
check_vk_result(err);
|
|
}
|
|
|
|
// Create Window Surface
|
|
{
|
|
err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &g_Surface);
|
|
check_vk_result(err);
|
|
}
|
|
|
|
// Get GPU (WARNING here we assume the first gpu is one we can use)
|
|
{
|
|
uint32_t count = 1;
|
|
err = vkEnumeratePhysicalDevices(g_Instance, &count, &g_Gpu);
|
|
check_vk_result(err);
|
|
}
|
|
|
|
// Get queue
|
|
{
|
|
uint32_t count;
|
|
vkGetPhysicalDeviceQueueFamilyProperties(g_Gpu, &count, NULL);
|
|
VkQueueFamilyProperties* queues = (VkQueueFamilyProperties*)malloc(sizeof(VkQueueFamilyProperties) * count);
|
|
vkGetPhysicalDeviceQueueFamilyProperties(g_Gpu, &count, queues);
|
|
for (uint32_t i = 0; i < count; i++)
|
|
{
|
|
if (queues[i].queueFlags & VK_QUEUE_GRAPHICS_BIT)
|
|
{
|
|
g_QueueFamily = i;
|
|
break;
|
|
}
|
|
}
|
|
free(queues);
|
|
}
|
|
|
|
// Check for WSI support
|
|
{
|
|
VkBool32 res;
|
|
vkGetPhysicalDeviceSurfaceSupportKHR(g_Gpu, g_QueueFamily, g_Surface, &res);
|
|
if (res != VK_TRUE)
|
|
{
|
|
fprintf(stderr, "Error no WSI support on physical device 0\n");
|
|
exit(-1);
|
|
}
|
|
}
|
|
|
|
// Get Surface Format
|
|
{
|
|
VkFormat image_view_format[][2] = {{VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_B8G8R8A8_UNORM}, {VK_FORMAT_B8G8R8A8_SRGB, VK_FORMAT_B8G8R8A8_UNORM}};
|
|
uint32_t count;
|
|
vkGetPhysicalDeviceSurfaceFormatsKHR(g_Gpu, g_Surface, &count, NULL);
|
|
VkSurfaceFormatKHR *formats = (VkSurfaceFormatKHR*)malloc(sizeof(VkSurfaceFormatKHR) * count);
|
|
vkGetPhysicalDeviceSurfaceFormatsKHR(g_Gpu, g_Surface, &count, formats);
|
|
for (size_t i = 0; i < sizeof(image_view_format) / sizeof(image_view_format[0]); i++)
|
|
{
|
|
for (uint32_t j = 0; j < count; j++)
|
|
{
|
|
if (formats[j].format == image_view_format[i][0])
|
|
{
|
|
g_ImageFormat = image_view_format[i][0];
|
|
g_ViewFormat = image_view_format[i][1];
|
|
g_ColorSpace = formats[j].colorSpace;
|
|
}
|
|
}
|
|
}
|
|
free(formats);
|
|
}
|
|
|
|
// Create Logical Device
|
|
{
|
|
int device_extension_count = 1;
|
|
const char* device_extensions[] = {"VK_KHR_swapchain"};
|
|
const uint32_t queue_index = 0;
|
|
const uint32_t queue_count = 1;
|
|
const float queue_priority[] = {1.0f};
|
|
VkDeviceQueueCreateInfo queue_info[1] = {};
|
|
queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
|
|
queue_info[0].queueFamilyIndex = g_QueueFamily;
|
|
queue_info[0].queueCount = queue_count;
|
|
queue_info[0].pQueuePriorities = queue_priority;
|
|
VkDeviceCreateInfo create_info = {};
|
|
create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
|
|
create_info.queueCreateInfoCount = sizeof(queue_info)/sizeof(queue_info[0]);
|
|
create_info.pQueueCreateInfos = queue_info;
|
|
create_info.enabledExtensionCount = device_extension_count;
|
|
create_info.ppEnabledExtensionNames = device_extensions;
|
|
err = vkCreateDevice(g_Gpu, &create_info, g_Allocator, &g_Device);
|
|
check_vk_result(err);
|
|
vkGetDeviceQueue(g_Device, g_QueueFamily, queue_index, &g_Queue);
|
|
}
|
|
|
|
// Create Framebuffers
|
|
{
|
|
int w, h;
|
|
glfwGetFramebufferSize(window, &w, &h);
|
|
resize_vulkan(window, w, h);
|
|
glfwSetFramebufferSizeCallback(window, resize_vulkan);
|
|
}
|
|
|
|
// Create Command Buffers
|
|
for (int i = 0; i < IMGUI_VK_QUEUED_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 = g_QueueFamily;
|
|
err = vkCreateCommandPool(g_Device, &info, g_Allocator, &g_CommandPool[i]);
|
|
check_vk_result(err);
|
|
}
|
|
{
|
|
VkCommandBufferAllocateInfo info = {};
|
|
info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
|
|
info.commandPool = g_CommandPool[i];
|
|
info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
|
|
info.commandBufferCount = 1;
|
|
err = vkAllocateCommandBuffers(g_Device, &info, &g_CommandBuffer[i]);
|
|
check_vk_result(err);
|
|
}
|
|
{
|
|
VkFenceCreateInfo info = {};
|
|
info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
|
|
info.flags = VK_FENCE_CREATE_SIGNALED_BIT;
|
|
err = vkCreateFence(g_Device, &info, g_Allocator, &g_Fence[i]);
|
|
check_vk_result(err);
|
|
}
|
|
{
|
|
VkSemaphoreCreateInfo info = {};
|
|
info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
|
|
err = vkCreateSemaphore(g_Device, &info, g_Allocator, &g_Semaphore[i]);
|
|
check_vk_result(err);
|
|
}
|
|
}
|
|
|
|
// Create Descriptor Pool
|
|
{
|
|
VkDescriptorPoolSize pool_size[11] =
|
|
{
|
|
{ VK_DESCRIPTOR_TYPE_SAMPLER, 1000 },
|
|
{ VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1000 },
|
|
{ VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1000 },
|
|
{ VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1000 },
|
|
{ VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, 1000 },
|
|
{ VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, 1000 },
|
|
{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1000 },
|
|
{ VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1000 },
|
|
{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 1000 },
|
|
{ VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, 1000 },
|
|
{ VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, 1000 }
|
|
};
|
|
VkDescriptorPoolCreateInfo pool_info = {};
|
|
pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
|
|
pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
|
|
pool_info.maxSets = 1000 * 11;
|
|
pool_info.poolSizeCount = 11;
|
|
pool_info.pPoolSizes = pool_size;
|
|
err = vkCreateDescriptorPool(g_Device, &pool_info, g_Allocator, &g_DescriptorPool);
|
|
check_vk_result(err);
|
|
}
|
|
}
|
|
|
|
static void cleanup_vulkan()
|
|
{
|
|
vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
|
|
for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++)
|
|
{
|
|
vkDestroyFence(g_Device, g_Fence[i], g_Allocator);
|
|
vkFreeCommandBuffers(g_Device, g_CommandPool[i], 1, &g_CommandBuffer[i]);
|
|
vkDestroyCommandPool(g_Device, g_CommandPool[i], g_Allocator);
|
|
vkDestroySemaphore(g_Device, g_Semaphore[i], g_Allocator);
|
|
}
|
|
for (uint32_t i = 0; i < g_BackBufferCount; i++)
|
|
{
|
|
vkDestroyImageView(g_Device, g_BackBufferView[i], g_Allocator);
|
|
vkDestroyFramebuffer(g_Device, g_Framebuffer[i], g_Allocator);
|
|
}
|
|
vkDestroyRenderPass(g_Device, g_RenderPass, g_Allocator);
|
|
vkDestroySwapchainKHR(g_Device, g_Swapchain, g_Allocator);
|
|
vkDestroySurfaceKHR(g_Instance, g_Surface, g_Allocator);
|
|
vkDestroyDevice(g_Device, g_Allocator);
|
|
vkDestroyInstance(g_Instance, g_Allocator);
|
|
}
|
|
|
|
static void frame_begin()
|
|
{
|
|
VkResult err;
|
|
while (true)
|
|
{
|
|
err = vkWaitForFences(g_Device, 1, &g_Fence[g_FrameIndex], VK_TRUE, 100);
|
|
if (err == VK_SUCCESS) break;
|
|
if (err == VK_TIMEOUT) continue;
|
|
check_vk_result(err);
|
|
}
|
|
{
|
|
err = vkAcquireNextImageKHR(g_Device, g_Swapchain, UINT64_MAX, g_Semaphore[g_FrameIndex], VK_NULL_HANDLE, &g_BackBufferIndex);
|
|
check_vk_result(err);
|
|
}
|
|
{
|
|
err = vkResetCommandPool(g_Device, g_CommandPool[g_FrameIndex], 0);
|
|
check_vk_result(err);
|
|
VkCommandBufferBeginInfo info = {};
|
|
info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
|
|
info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
|
|
err = vkBeginCommandBuffer(g_CommandBuffer[g_FrameIndex], &info);
|
|
check_vk_result(err);
|
|
}
|
|
{
|
|
VkRenderPassBeginInfo info = {};
|
|
info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
|
|
info.renderPass = g_RenderPass;
|
|
info.framebuffer = g_Framebuffer[g_BackBufferIndex];
|
|
info.renderArea.extent.width = fb_width;
|
|
info.renderArea.extent.height = fb_height;
|
|
info.clearValueCount = 1;
|
|
info.pClearValues = &g_ClearValue;
|
|
vkCmdBeginRenderPass(g_CommandBuffer[g_FrameIndex], &info, VK_SUBPASS_CONTENTS_INLINE);
|
|
}
|
|
}
|
|
|
|
static void frame_end()
|
|
{
|
|
VkResult err;
|
|
vkCmdEndRenderPass(g_CommandBuffer[g_FrameIndex]);
|
|
{
|
|
VkImageMemoryBarrier barrier = {};
|
|
barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
|
|
barrier.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
|
|
barrier.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
|
|
barrier.oldLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
|
|
barrier.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
|
|
barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
|
|
barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
|
|
barrier.image = g_BackBuffer[g_BackBufferIndex];
|
|
barrier.subresourceRange = g_ImageRange;
|
|
vkCmdPipelineBarrier(g_CommandBuffer[g_FrameIndex], VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, 0, 0, NULL, 0, NULL, 1, &barrier);
|
|
}
|
|
{
|
|
VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
|
|
VkSubmitInfo info = {};
|
|
info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
|
|
info.waitSemaphoreCount = 1;
|
|
info.pWaitSemaphores = &g_Semaphore[g_FrameIndex];
|
|
info.pWaitDstStageMask = &wait_stage;
|
|
info.commandBufferCount = 1;
|
|
info.pCommandBuffers = &g_CommandBuffer[g_FrameIndex];
|
|
|
|
err = vkEndCommandBuffer(g_CommandBuffer[g_FrameIndex]);
|
|
check_vk_result(err);
|
|
err = vkResetFences(g_Device, 1, &g_Fence[g_FrameIndex]);
|
|
check_vk_result(err);
|
|
err = vkQueueSubmit(g_Queue, 1, &info, g_Fence[g_FrameIndex]);
|
|
check_vk_result(err);
|
|
}
|
|
{
|
|
VkResult res;
|
|
VkSwapchainKHR swapchains[1] = {g_Swapchain};
|
|
uint32_t indices[1] = {g_BackBufferIndex};
|
|
VkPresentInfoKHR info = {};
|
|
info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
|
|
info.swapchainCount = 1;
|
|
info.pSwapchains = swapchains;
|
|
info.pImageIndices = indices;
|
|
info.pResults = &res;
|
|
err = vkQueuePresentKHR(g_Queue, &info);
|
|
check_vk_result(err);
|
|
check_vk_result(res);
|
|
}
|
|
g_FrameIndex = (g_FrameIndex) % IMGUI_VK_QUEUED_FRAMES;
|
|
}
|
|
|
|
static void error_callback(int error, const char* description)
|
|
{
|
|
fprintf(stderr, "Error %d: %s\n", error, description);
|
|
}
|
|
|
|
int main(int, char**)
|
|
{
|
|
// Setup window
|
|
glfwSetErrorCallback(error_callback);
|
|
if (!glfwInit())
|
|
return 1;
|
|
|
|
glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
|
|
GLFWwindow* window = glfwCreateWindow(1280, 720, "ImGui Vulkan example", NULL, NULL);
|
|
|
|
// Setup Vulkan
|
|
if (!glfwVulkanSupported())
|
|
{
|
|
printf("GLFW: Vulkan Not Supported\n");
|
|
return 1;
|
|
}
|
|
setup_vulkan(window);
|
|
|
|
// Setup ImGui binding
|
|
ImGui_ImplGlfwVulkan_Init_Data init_data = {};
|
|
init_data.allocator = g_Allocator;
|
|
init_data.gpu = g_Gpu;
|
|
init_data.device = g_Device;
|
|
init_data.render_pass = g_RenderPass;
|
|
init_data.pipeline_cache = g_PipelineCache;
|
|
init_data.descriptor_pool = g_DescriptorPool;
|
|
init_data.check_vk_result = check_vk_result;
|
|
ImGui_ImplGlfwVulkan_Init(window, true, &init_data);
|
|
|
|
// Load Fonts
|
|
// (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
|
|
//ImGuiIO& io = ImGui::GetIO();
|
|
//io.Fonts->AddFontDefault();
|
|
//io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
|
|
//io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
|
|
//io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
|
|
//io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
|
|
//io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
|
|
|
|
// Upload Fonts
|
|
{
|
|
VkResult err;
|
|
err = vkResetCommandPool(g_Device, g_CommandPool[g_FrameIndex], 0);
|
|
check_vk_result(err);
|
|
VkCommandBufferBeginInfo begin_info = {};
|
|
begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
|
|
begin_info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
|
|
err = vkBeginCommandBuffer(g_CommandBuffer[g_FrameIndex], &begin_info);
|
|
check_vk_result(err);
|
|
|
|
ImGui_ImplGlfwVulkan_CreateFontsTexture(g_CommandBuffer[g_FrameIndex]);
|
|
|
|
VkSubmitInfo end_info = {};
|
|
end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
|
|
end_info.commandBufferCount = 1;
|
|
end_info.pCommandBuffers = &g_CommandBuffer[g_FrameIndex];
|
|
err = vkEndCommandBuffer(g_CommandBuffer[g_FrameIndex]);
|
|
check_vk_result(err);
|
|
err = vkQueueSubmit(g_Queue, 1, &end_info, VK_NULL_HANDLE);
|
|
check_vk_result(err);
|
|
|
|
err = vkDeviceWaitIdle(g_Device);
|
|
check_vk_result(err);
|
|
ImGui_ImplGlfwVulkan_InvalidateFontUploadObjects();
|
|
}
|
|
|
|
bool show_test_window = true;
|
|
bool show_another_window = false;
|
|
ImVec4 clear_color = ImColor(114, 144, 154);
|
|
|
|
// Main loop
|
|
while (!glfwWindowShouldClose(window))
|
|
{
|
|
glfwPollEvents();
|
|
ImGui_ImplGlfwVulkan_NewFrame();
|
|
|
|
// 1. Show a simple window
|
|
// Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
|
|
{
|
|
static float f = 0.0f;
|
|
ImGui::Text("Hello, world!");
|
|
ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
|
|
ImGui::ColorEdit3("clear color", (float*)&clear_color);
|
|
if (ImGui::Button("Test Window")) show_test_window ^= 1;
|
|
if (ImGui::Button("Another Window")) show_another_window ^= 1;
|
|
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
|
|
}
|
|
|
|
// 2. Show another simple window, this time using an explicit Begin/End pair
|
|
if (show_another_window)
|
|
{
|
|
ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
|
|
ImGui::Begin("Another Window", &show_another_window);
|
|
ImGui::Text("Hello");
|
|
ImGui::End();
|
|
}
|
|
|
|
// 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
|
|
if (show_test_window)
|
|
{
|
|
ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver);
|
|
ImGui::ShowTestWindow(&show_test_window);
|
|
}
|
|
|
|
g_ClearValue.color.float32[0] = clear_color.x;
|
|
g_ClearValue.color.float32[1] = clear_color.y;
|
|
g_ClearValue.color.float32[2] = clear_color.z;
|
|
g_ClearValue.color.float32[3] = clear_color.w;
|
|
|
|
frame_begin();
|
|
ImGui_ImplGlfwVulkan_Render(g_CommandBuffer[g_FrameIndex]);
|
|
frame_end();
|
|
}
|
|
|
|
// Cleanup
|
|
VkResult err = vkDeviceWaitIdle(g_Device);
|
|
check_vk_result(err);
|
|
ImGui_ImplGlfwVulkan_Shutdown();
|
|
cleanup_vulkan();
|
|
glfwTerminate();
|
|
|
|
return 0;
|
|
}
|