Vulkan example.
This commit is contained in:
Håvard Mathisen
parent
4b7edffe8a
commit
4cbd316f01
36
examples/vulkan_example/CMakeLists.txt
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36
examples/vulkan_example/CMakeLists.txt
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cmake_minimum_required(VERSION 2.8)
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project(ImGuiGLFWVulkanExample C CXX)
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if(NOT CMAKE_BUILD_TYPE)
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set(CMAKE_BUILD_TYPE Debug CACHE STRING "" FORCE)
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endif()
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set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DVK_PROTOTYPES")
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set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DVK_PROTOTYPES")
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# GLFW
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set(GLFW_DIR ../../../glfw)
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option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" OFF)
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option(GLFW_BUILD_TESTS "Build the GLFW test programs" OFF)
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option(GLFW_BUILD_DOCS "Build the GLFW documentation" OFF)
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option(GLFW_INSTALL "Generate installation target" OFF)
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option(GLFW_DOCUMENT_INTERNALS "Include internals in documentation" OFF)
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add_subdirectory(${GLFW_DIR} binary_dir EXCLUDE_FROM_ALL)
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include_directories(${GLFW_DIR}/include)
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# ImGui
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set(IMGUI_DIR ../../)
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include_directories(${IMGUI_DIR})
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# Libraries
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if(WIN32)
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set(LIBRARIES "glfw;vulkan-${MAJOR}")
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elseif(UNIX)
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set(LIBRARIES "glfw;vulkan")
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else()
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endif()
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file(GLOB sources *.cpp)
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add_executable(vulkan_example ${sources} ${IMGUI_DIR}/imgui.cpp ${IMGUI_DIR}/imgui_draw.cpp ${IMGUI_DIR}/imgui_demo.cpp)
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target_link_libraries(vulkan_example ${LIBRARIES})
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4
examples/vulkan_example/gen_spv.sh
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4
examples/vulkan_example/gen_spv.sh
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#!/bin/bash
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glslangValidator -V -o glsl_shader.frag.spv glsl_shader.frag
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glslangValidator -V -o glsl_shader.vert.spv glsl_shader.vert
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spirv-remap --map all --dce all --strip-all --input glsl_shader.frag.spv glsl_shader.vert.spv --output ./
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14
examples/vulkan_example/glsl_shader.frag
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examples/vulkan_example/glsl_shader.frag
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#version 450 core
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layout(location = 0, index = 0) out vec4 fColor;
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layout(set=0, binding=0) uniform sampler2D sTexture;
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in block{
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vec4 Color;
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vec2 UV;
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} In;
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void main()
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{
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fColor = In.Color * texture(sTexture, In.UV.st);
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}
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21
examples/vulkan_example/glsl_shader.vert
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examples/vulkan_example/glsl_shader.vert
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#version 450 core
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layout(location = 0) in vec2 aPos;
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layout(location = 1) in vec2 aUV;
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layout(location = 2) in vec4 aColor;
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layout(push_constant) uniform uPushConstant{
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vec2 uScale;
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vec2 uTranslate;
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} pc;
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out block{
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vec4 Color;
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vec2 UV;
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} Out;
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void main()
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{
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Out.Color = aColor;
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Out.UV = aUV;
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gl_Position = vec4(aPos*pc.uScale+pc.uTranslate, 0, 1);
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}
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1017
examples/vulkan_example/imgui_impl_glfw_vulkan.cpp
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1017
examples/vulkan_example/imgui_impl_glfw_vulkan.cpp
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File diff suppressed because it is too large
Load Diff
41
examples/vulkan_example/imgui_impl_glfw_vulkan.h
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examples/vulkan_example/imgui_impl_glfw_vulkan.h
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// ImGui GLFW binding with Vulkan + shaders
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// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
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// If you use this binding you'll need to call 5 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXX_CreateFontsTexture(), ImGui_ImplXXXX_NewFrame(), ImGui_ImplXXXX_Render() and ImGui_ImplXXXX_Shutdown().
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// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
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// https://github.com/ocornut/imgui
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#define IMGUI_VK_QUEUED_FRAMES 2
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struct GLFWwindow;
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struct ImGui_ImplGlfwVulkan_Init_Data{
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VkAllocationCallbacks* allocator;
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VkPhysicalDevice gpu;
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VkDevice device;
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VkRenderPass render_pass;
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VkPipelineCache pipeline_cache;
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VkDescriptorPool descriptor_pool;
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void (*check_vk_result)(VkResult err);
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};
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IMGUI_API bool ImGui_ImplGlfwVulkan_Init(GLFWwindow* window, bool install_callbacks, ImGui_ImplGlfwVulkan_Init_Data *init_data);
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IMGUI_API void ImGui_ImplGlfwVulkan_Shutdown();
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IMGUI_API void ImGui_ImplGlfwVulkan_NewFrame();
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IMGUI_API void ImGui_ImplGlfwVulkan_Render(VkCommandBuffer command_buffer);
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// Use if you want to reset your rendering device without losing ImGui state.
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IMGUI_API void ImGui_ImplGlfwVulkan_InvalidateFontUploadObjects();
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IMGUI_API void ImGui_ImplGlfwVulkan_InvalidateDeviceObjects();
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IMGUI_API bool ImGui_ImplGlfwVulkan_CreateFontsTexture(VkCommandBuffer command_buffer);
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IMGUI_API bool ImGui_ImplGlfwVulkan_CreateDeviceObjects();
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// GLFW callbacks (installed by default if you enable 'install_callbacks' during initialization)
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// Provided here if you want to chain callbacks.
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// You can also handle inputs yourself and use those as a reference.
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IMGUI_API void ImGui_ImplGlfwVulkan_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
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IMGUI_API void ImGui_ImplGlfwVulkan_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
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IMGUI_API void ImGui_ImplGlfwVulkan_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
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IMGUI_API void ImGui_ImplGlfwVulkan_CharCallback(GLFWwindow* window, unsigned int c);
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533
examples/vulkan_example/main.cpp
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examples/vulkan_example/main.cpp
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// ImGui - standalone example application for Glfw + Vulkan, using programmable pipeline
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// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
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#include <imgui.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define GLFW_INCLUDE_NONE
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#define GLFW_INCLUDE_VULKAN
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#include <GLFW/glfw3.h>
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#include "imgui_impl_glfw_vulkan.h"
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#define IMGUI_MAX_POSSIBLE_BACK_BUFFERS 16
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static VkAllocationCallbacks* g_Allocator = NULL;
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static VkInstance g_Instance = VK_NULL_HANDLE;
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static VkSurfaceKHR g_Surface = VK_NULL_HANDLE;
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static VkPhysicalDevice g_Gpu = VK_NULL_HANDLE;
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static VkDevice g_Device = VK_NULL_HANDLE;
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static VkSwapchainKHR g_Swapchain = VK_NULL_HANDLE;
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static VkRenderPass g_RenderPass = VK_NULL_HANDLE;
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static uint32_t g_QueueFamily = 0;
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static VkQueue g_Queue = VK_NULL_HANDLE;
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static VkFormat g_Format = VK_FORMAT_B8G8R8A8_UNORM;
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static VkColorSpaceKHR g_ColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
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static VkImageSubresourceRange g_ImageRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1};
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static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
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static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
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static int fb_width, fb_height;
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static uint32_t g_BackBufferIndex = 0;
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static uint32_t g_BackBufferCount = 0;
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static VkImage g_BackBuffer[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
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static VkImageView g_BackBufferView[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
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static VkFramebuffer g_Framebuffer[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
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static uint32_t g_FrameIndex = 0;
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static VkCommandPool g_CommandPool[IMGUI_VK_QUEUED_FRAMES];
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static VkCommandBuffer g_CommandBuffer[IMGUI_VK_QUEUED_FRAMES];
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static VkFence g_Fence[IMGUI_VK_QUEUED_FRAMES];
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static VkSemaphore g_Semaphore[IMGUI_VK_QUEUED_FRAMES];
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static VkClearValue g_ClearValue = {};
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static void check_vk_result(VkResult err)
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{
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if(err == 0) return;
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printf("VkResult %d\n", err);
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if(err < 0) abort();
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}
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static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
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{
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VkResult err;
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VkSwapchainKHR old_swapchain = g_Swapchain;
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err = vkDeviceWaitIdle(g_Device);
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check_vk_result(err);
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// Destroy old Framebuffer:
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for(uint32_t i=0; i<g_BackBufferCount; i++)
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if(g_BackBufferView[i])
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vkDestroyImageView(g_Device, g_BackBufferView[i], g_Allocator);
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for(uint32_t i=0; i<g_BackBufferCount; i++)
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if(g_Framebuffer[i])
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vkDestroyFramebuffer(g_Device, g_Framebuffer[i], g_Allocator);
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if(g_RenderPass)
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vkDestroyRenderPass(g_Device, g_RenderPass, g_Allocator);
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// Create Swapchain:
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{
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VkSwapchainCreateInfoKHR info = {};
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info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
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info.surface = g_Surface;
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info.imageFormat = g_Format;
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info.imageColorSpace = g_ColorSpace;
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info.imageArrayLayers = 1;
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info.imageUsage |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
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info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
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info.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
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info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
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info.presentMode = VK_PRESENT_MODE_FIFO_KHR;
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info.clipped = VK_TRUE;
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info.oldSwapchain = old_swapchain;
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VkSurfaceCapabilitiesKHR cap;
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err = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(g_Gpu, g_Surface, &cap);
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check_vk_result(err);
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info.minImageCount = (cap.minImageCount + 2 < cap.maxImageCount) ? (cap.minImageCount + 2) : cap.maxImageCount;
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if(cap.currentExtent.width == 0xffffffff){
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fb_width = w;
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fb_height = h;
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info.imageExtent.width = fb_width;
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info.imageExtent.height = fb_height;
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}
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else{
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fb_width = cap.currentExtent.width;
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fb_height = cap.currentExtent.height;
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info.imageExtent.width = fb_width;
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info.imageExtent.height = fb_height;
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}
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err = vkCreateSwapchainKHR(g_Device, &info, g_Allocator, &g_Swapchain);
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check_vk_result(err);
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err = vkGetSwapchainImagesKHR(g_Device, g_Swapchain, &g_BackBufferCount, NULL);
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check_vk_result(err);
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err = vkGetSwapchainImagesKHR(g_Device, g_Swapchain, &g_BackBufferCount, g_BackBuffer);
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check_vk_result(err);
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}
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if(old_swapchain)
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vkDestroySwapchainKHR(g_Device, old_swapchain, g_Allocator);
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// Create the Render Pass:
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{
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VkAttachmentDescription attachment = {};
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attachment.format = g_Format;
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attachment.samples = VK_SAMPLE_COUNT_1_BIT;
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attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
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attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
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attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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attachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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attachment.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
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VkAttachmentReference color_attachment = {};
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color_attachment.attachment = 0;
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color_attachment.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
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VkSubpassDescription subpass = {};
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subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
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subpass.colorAttachmentCount = 1;
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subpass.pColorAttachments = &color_attachment;
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VkRenderPassCreateInfo info = {};
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info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
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info.attachmentCount = 1;
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info.pAttachments = &attachment;
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info.subpassCount = 1;
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info.pSubpasses = &subpass;
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err = vkCreateRenderPass(g_Device, &info, g_Allocator, &g_RenderPass);
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check_vk_result(err);
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}
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// Create The Image Views
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{
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VkImageViewCreateInfo info = {};
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info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
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info.viewType = VK_IMAGE_VIEW_TYPE_2D;
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info.format = g_Format;
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info.components.r = VK_COMPONENT_SWIZZLE_R;
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info.components.g = VK_COMPONENT_SWIZZLE_G;
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info.components.b = VK_COMPONENT_SWIZZLE_B;
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info.components.a = VK_COMPONENT_SWIZZLE_A;
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info.subresourceRange = g_ImageRange;
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for(uint32_t i=0; i<g_BackBufferCount; i++){
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info.image = g_BackBuffer[i];
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err = vkCreateImageView(g_Device, &info, g_Allocator, &g_BackBufferView[i]);
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check_vk_result(err);
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}
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}
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// Create Framebuffer:
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{
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VkImageView attachment[1];
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VkFramebufferCreateInfo info = {};
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info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
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info.renderPass = g_RenderPass;
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info.attachmentCount = 1;
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info.pAttachments = attachment;
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info.width = fb_width;
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info.height = fb_height;
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info.layers = 1;
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for(uint32_t i=0; i<g_BackBufferCount; i++){
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attachment[0] = g_BackBufferView[i];
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err = vkCreateFramebuffer(g_Device, &info, g_Allocator, &g_Framebuffer[i]);
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check_vk_result(err);
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}
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}
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}
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static void setup_vulkan(GLFWwindow* window)
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{
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VkResult err;
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// Create Vulkan Instance
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{
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int glfw_extensions_count;
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const char** glfw_extensions = glfwGetRequiredInstanceExtensions(&glfw_extensions_count);
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VkInstanceCreateInfo create_info = {};
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create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
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create_info.enabledExtensionCount = glfw_extensions_count;
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create_info.ppEnabledExtensionNames = glfw_extensions;
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err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
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check_vk_result(err);
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}
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// Create Window Surface
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{
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err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &g_Surface);
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check_vk_result(err);
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}
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// Get Gpu
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{
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uint32_t count = 1;
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||||||
|
err = vkEnumeratePhysicalDevices(g_Instance, &count, &g_Gpu);
|
||||||
|
check_vk_result(err);
|
||||||
|
}
|
||||||
|
// 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);
|
||||||
|
}
|
||||||
|
{
|
||||||
|
vkDestroySemaphore(g_Device, g_Semaphore[g_FrameIndex], g_Allocator);
|
||||||
|
VkSemaphoreCreateInfo info = {};
|
||||||
|
info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
|
||||||
|
err = vkCreateSemaphore(g_Device, &info, g_Allocator,
|
||||||
|
&g_Semaphore[g_FrameIndex]);
|
||||||
|
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);
|
||||||
|
}
|
||||||
|
{
|
||||||
|
VkSubmitInfo info = {};
|
||||||
|
info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
|
||||||
|
info.waitSemaphoreCount = 1;
|
||||||
|
info.pWaitSemaphores = &g_Semaphore[g_FrameIndex];
|
||||||
|
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;
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user