anulax
/
imgui-docking
1
0
Fork 0
Code Issues Pull Requests Packages project_board Releases Wiki Activity

Examples: Vulkan: Further refactor.

Browse Source
features/sdl_renderer3_multiviewports
omar ago%!(EXTRA string=8 years)
parent e0cbfd74d7
commit cab41d954e
4 changed files with 240 additions and 278 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 48
      examples/imgui_impl_vulkan.cpp
  2. 9
      examples/imgui_impl_vulkan.h
  3. 161
      examples/sdl_vulkan_example/main.cpp
  4. 152
      examples/vulkan_example/main.cpp

48
examples/imgui_impl_vulkan.cpp
Unescape View File

@ -11,6 +11,7 @@
// CHANGELOG // CHANGELOG
// (minor and older changes stripped away, please see git history for details) // (minor and older changes stripped away, please see git history for details)
// 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. // 2018-03-01: Vulkan: Renamed ImGui_ImplVulkan_Init_Info to ImGui_ImplVulkan_InitInfo and fields to match more closely Vulkan terminology.
// 2018-02-18: Vulkan: Offset projection matrix and clipping rectangle by io.DisplayPos (which will be non-zero for multi-viewport applications). // 2018-02-18: Vulkan: Offset projection matrix and clipping rectangle by io.DisplayPos (which will be non-zero for multi-viewport applications).
// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback, ImGui_ImplVulkan_Render() calls ImGui_ImplVulkan_RenderDrawData() itself. // 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback, ImGui_ImplVulkan_Render() calls ImGui_ImplVulkan_RenderDrawData() itself.
@ -720,7 +721,6 @@ void ImGui_ImplVulkan_NewFrame()
void ImGui_ImplVulkan_Render(VkCommandBuffer command_buffer) void ImGui_ImplVulkan_Render(VkCommandBuffer command_buffer)
{ {
ImGui::Render();
ImGui_ImplVulkan_RenderDrawData(command_buffer, ImGui::GetDrawData()); ImGui_ImplVulkan_RenderDrawData(command_buffer, ImGui::GetDrawData());
g_FrameIndex = (g_FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES; g_FrameIndex = (g_FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES;
} }
@ -821,10 +821,53 @@ VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_d
return VK_PRESENT_MODE_FIFO_KHR; // Always available return VK_PRESENT_MODE_FIFO_KHR; // Always available
} }
void ImGui_ImplVulkanH_CreateOrResizeWindowData(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h) void ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, uint32_t queue_family, ImGui_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator)
{ {
IM_ASSERT(physical_device != NULL && device != NULL); IM_ASSERT(physical_device != NULL && device != NULL);
(void)allocator;
// Create Command Buffers
VkResult err;
for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++)
{
ImGui_ImplVulkan_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->PresentCompleteSemaphore);
check_vk_result(err);
err = vkCreateSemaphore(device, &info, allocator, &fd->RenderCompleteSemaphore);
check_vk_result(err);
}
}
}
void ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h)
{
VkResult err; VkResult err;
VkSwapchainKHR old_swapchain = wd->Swapchain; VkSwapchainKHR old_swapchain = wd->Swapchain;
err = vkDeviceWaitIdle(device); err = vkDeviceWaitIdle(device);
@ -972,6 +1015,7 @@ void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, I
vkDestroyRenderPass(device, wd->RenderPass, allocator); vkDestroyRenderPass(device, wd->RenderPass, allocator);
vkDestroySwapchainKHR(device, wd->Swapchain, allocator); vkDestroySwapchainKHR(device, wd->Swapchain, allocator);
vkDestroySurfaceKHR(instance, wd->Surface, allocator); vkDestroySurfaceKHR(instance, wd->Surface, allocator);
*wd = ImGui_ImplVulkan_WindowData();
} }
//-------------------------------------------------------------------------------------------------------- //--------------------------------------------------------------------------------------------------------

9
examples/imgui_impl_vulkan.h
Unescape View File

@ -47,12 +47,12 @@ IMGUI_API bool ImGui_ImplVulkan_CreateDeviceObjects();
struct ImGui_ImplVulkan_FrameData; struct ImGui_ImplVulkan_FrameData;
struct ImGui_ImplVulkan_WindowData; struct ImGui_ImplVulkan_WindowData;
struct ImGui_ImplVulkan_WindowDataCreateInfo;
IMGUI_API void ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, uint32_t queue_family, ImGui_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator);
IMGUI_API void ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h);
IMGUI_API void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, ImGui_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator);
IMGUI_API VkSurfaceFormatKHR ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space); IMGUI_API VkSurfaceFormatKHR ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space);
IMGUI_API VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count); IMGUI_API VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count);
IMGUI_API void ImGui_ImplVulkanH_CreateOrResizeWindowData(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h);
IMGUI_API void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, ImGui_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator);
struct ImGui_ImplVulkan_FrameData struct ImGui_ImplVulkan_FrameData
{ {
@ -68,7 +68,8 @@ struct ImGui_ImplVulkan_FrameData
struct ImGui_ImplVulkan_WindowData struct ImGui_ImplVulkan_WindowData
{ {
int Width, Height; int Width;
int Height;
VkSwapchainKHR Swapchain; VkSwapchainKHR Swapchain;
VkSurfaceKHR Surface; VkSurfaceKHR Surface;
VkSurfaceFormatKHR SurfaceFormat; VkSurfaceFormatKHR SurfaceFormat;

161
examples/sdl_vulkan_example/main.cpp
Unescape View File

@ -44,10 +44,12 @@ static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags,
} }
#endif // IMGUI_VULKAN_DEBUG_REPORT #endif // IMGUI_VULKAN_DEBUG_REPORT
static void CreateVulkanInstance(const char** extensions, uint32_t extensions_count) static void SetupVulkan(const char** extensions, uint32_t extensions_count)
{ {
VkResult err; VkResult err;
// Create Vulkan Instance
{
VkInstanceCreateInfo create_info = {}; VkInstanceCreateInfo create_info = {};
create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO; create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
create_info.enabledExtensionCount = extensions_count; create_info.enabledExtensionCount = extensions_count;
@ -88,13 +90,7 @@ static void CreateVulkanInstance(const char** extensions, uint32_t extensions_co
err = vkCreateInstance(&create_info, g_Allocator, &g_Instance); err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
check_vk_result(err); check_vk_result(err);
#endif #endif
} }
static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
{
IM_ASSERT(wd->Surface != NULL);
VkResult err;
// Select GPU // Select GPU
{ {
@ -129,34 +125,6 @@ static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
IM_ASSERT(g_QueueFamily != -1); IM_ASSERT(g_QueueFamily != -1);
} }
// Check for WSI support
{
VkBool32 res;
vkGetPhysicalDeviceSurfaceSupportKHR(g_PhysicalDevice, g_QueueFamily, wd->Surface, &res);
if (res != VK_TRUE)
{
fprintf(stderr, "Error no WSI support on physical device 0\n");
exit(-1);
}
}
// Get Surface Format
{
const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
}
// Get Present Mode
{
#ifdef IMGUI_UNLIMITED_FRAME_RATE
VkPresentModeKHR present_mode = VK_PRESENT_MODE_IMMEDIATE_KHR;
#else
VkPresentModeKHR present_mode = VK_PRESENT_MODE_FIFO_KHR;
#endif
wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_mode, 1);
}
// Create Logical Device (with 1 queue) // Create Logical Device (with 1 queue)
{ {
int device_extension_count = 1; int device_extension_count = 1;
@ -178,44 +146,6 @@ static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
vkGetDeviceQueue(g_Device, g_QueueFamily, 0, &g_Queue); vkGetDeviceQueue(g_Device, g_QueueFamily, 0, &g_Queue);
} }
// Create Command Buffers
for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++)
{
ImGui_ImplVulkan_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 = g_QueueFamily;
err = vkCreateCommandPool(g_Device, &info, g_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(g_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(g_Device, &info, g_Allocator, &fd->Fence);
check_vk_result(err);
}
{
VkSemaphoreCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
err = vkCreateSemaphore(g_Device, &info, g_Allocator, &fd->PresentCompleteSemaphore);
check_vk_result(err);
err = vkCreateSemaphore(g_Device, &info, g_Allocator, &fd->RenderCompleteSemaphore);
check_vk_result(err);
}
}
// Create Descriptor Pool // Create Descriptor Pool
{ {
VkDescriptorPoolSize pool_sizes[] = VkDescriptorPoolSize pool_sizes[] =
@ -243,11 +173,42 @@ static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
} }
} }
static void cleanup_vulkan() static void SetupVulkanWindowData(ImGui_ImplVulkan_WindowData* wd, VkSurfaceKHR surface, int width, int height)
{
wd->Surface = surface;
// Check for WSI support
VkBool32 res;
vkGetPhysicalDeviceSurfaceSupportKHR(g_PhysicalDevice, g_QueueFamily, wd->Surface, &res);
if (res != VK_TRUE)
{
fprintf(stderr, "Error no WSI support on physical device 0\n");
exit(-1);
}
// Get Surface Format
const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
// Get Present Mode
#ifdef IMGUI_UNLIMITED_FRAME_RATE
VkPresentModeKHR present_mode = VK_PRESENT_MODE_IMMEDIATE_KHR;
#else
VkPresentModeKHR present_mode = VK_PRESENT_MODE_FIFO_KHR;
#endif
wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_mode, 1);
// Create SwapChain, RenderPass, Framebuffer, etc.
ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(g_PhysicalDevice, g_Device, g_QueueFamily, wd, g_Allocator);
ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, wd, g_Allocator, width, height);
}
static void CleanupVulkan()
{ {
ImGui_ImplVulkan_WindowData* wd = &g_WindowData; ImGui_ImplVulkan_WindowData* wd = &g_WindowData;
vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
ImGui_ImplVulkanH_DestroyWindowData(g_Instance, g_Device, wd, g_Allocator); ImGui_ImplVulkanH_DestroyWindowData(g_Instance, g_Device, wd, g_Allocator);
vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
#ifdef IMGUI_VULKAN_DEBUG_REPORT #ifdef IMGUI_VULKAN_DEBUG_REPORT
// Remove the debug report callback // Remove the debug report callback
@ -259,7 +220,7 @@ static void cleanup_vulkan()
vkDestroyInstance(g_Instance, g_Allocator); vkDestroyInstance(g_Instance, g_Allocator);
} }
static void frame_begin(ImGui_ImplVulkan_WindowData* wd) static void FrameBegin(ImGui_ImplVulkan_WindowData* wd)
{ {
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[wd->FrameIndex]; ImGui_ImplVulkan_FrameData* fd = &wd->Frames[wd->FrameIndex];
VkResult err; VkResult err;
@ -296,7 +257,7 @@ static void frame_begin(ImGui_ImplVulkan_WindowData* wd)
} }
} }
static void frame_end(ImGui_ImplVulkan_WindowData* wd) static void FrameEnd(ImGui_ImplVulkan_WindowData* wd)
{ {
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[wd->FrameIndex]; ImGui_ImplVulkan_FrameData* fd = &wd->Frames[wd->FrameIndex];
VkResult err; VkResult err;
@ -322,14 +283,14 @@ static void frame_end(ImGui_ImplVulkan_WindowData* wd)
} }
} }
static void frame_present(ImGui_ImplVulkan_WindowData* wd) static void FramePresent(ImGui_ImplVulkan_WindowData* wd)
{ {
VkResult err; VkResult err;
// If IMGUI_UNLIMITED_FRAME_RATE is defined we present the latest but one frame. Otherwise we present the latest rendered frame // If IMGUI_UNLIMITED_FRAME_RATE is defined we present the latest but one frame. Otherwise we present the latest rendered frame
#ifdef IMGUI_UNLIMITED_FRAME_RATE #ifdef IMGUI_UNLIMITED_FRAME_RATE
uint32_t PresentIndex = (wd->FrameIndex + IMGUI_VK_QUEUED_FRAMES - 1) % IMGUI_VK_QUEUED_FRAMES; uint32_t PresentIndex = (wd->FrameIndex + IMGUI_VK_QUEUED_FRAMES - 1) % IMGUI_VK_QUEUED_FRAMES;
#else #else
uint32_t PresentIndex = g_FrameIndex; uint32_t PresentIndex = wd->FrameIndex;
#endif // IMGUI_UNLIMITED_FRAME_RATE #endif // IMGUI_UNLIMITED_FRAME_RATE
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[PresentIndex]; ImGui_ImplVulkan_FrameData* fd = &wd->Frames[PresentIndex];
@ -359,34 +320,29 @@ int main(int, char**)
SDL_Window* window = SDL_CreateWindow("ImGui SDL2+Vulkan example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_VULKAN|SDL_WINDOW_RESIZABLE); SDL_Window* window = SDL_CreateWindow("ImGui SDL2+Vulkan example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_VULKAN|SDL_WINDOW_RESIZABLE);
// Setup Vulkan // Setup Vulkan
uint32_t sdl_extensions_count; uint32_t extensions_count = 0;
SDL_Vulkan_GetInstanceExtensions(window, &sdl_extensions_count, NULL); SDL_Vulkan_GetInstanceExtensions(window, &extensions_count, NULL);
const char** sdl_extensions = new const char*[sdl_extensions_count]; const char** extensions = new const char*[extensions_count];
SDL_Vulkan_GetInstanceExtensions(window, &sdl_extensions_count, sdl_extensions); SDL_Vulkan_GetInstanceExtensions(window, &extensions_count, extensions);
CreateVulkanInstance(sdl_extensions, sdl_extensions_count); SetupVulkan(extensions, extensions_count);
delete[] sdl_extensions; delete[] extensions;
// Create Window Surface // Create Window Surface
ImGui_ImplVulkan_WindowData* wd = &g_WindowData; VkSurfaceKHR surface;
SDL_bool result = SDL_Vulkan_CreateSurface(window, g_Instance, &wd->Surface); if (SDL_Vulkan_CreateSurface(window, g_Instance, &surface) == 0)
if (result == 0)
{ {
printf("Failed to create Vulkan surface.\n"); printf("Failed to create Vulkan surface.\n");
return 1; return 1;
} }
SetupVulkan(wd);
// Create Framebuffers // Create Framebuffers
{
int w, h; int w, h;
SDL_GetWindowSize(window, &w, &h); SDL_GetWindowSize(window, &w, &h);
ImGui_ImplVulkanH_CreateOrResizeWindowData(g_PhysicalDevice, g_Device, wd, g_Allocator, w, h); ImGui_ImplVulkan_WindowData* wd = &g_WindowData;
} SetupVulkanWindowData(wd, surface, w, h);
// Setup ImGui binding // Setup ImGui binding
ImGui::CreateContext(); ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io; ImGuiIO& io = ImGui::GetIO(); (void)io;
io.ConfigFlags |= ImGuiConfigFlags_MultiViewports; io.ConfigFlags |= ImGuiConfigFlags_MultiViewports;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
@ -399,8 +355,8 @@ int main(int, char**)
init_info.DescriptorPool = g_DescriptorPool; init_info.DescriptorPool = g_DescriptorPool;
init_info.Allocator = g_Allocator; init_info.Allocator = g_Allocator;
init_info.CheckVkResultFn = check_vk_result; init_info.CheckVkResultFn = check_vk_result;
ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
ImGui_ImplSDL2_Init(window, NULL); ImGui_ImplSDL2_Init(window, NULL);
ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
// Setup style // Setup style
ImGui::StyleColorsDark(); ImGui::StyleColorsDark();
@ -473,7 +429,7 @@ int main(int, char**)
if (event.type == SDL_QUIT) if (event.type == SDL_QUIT)
done = true; done = true;
if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window)) if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window))
ImGui_ImplVulkanH_CreateOrResizeWindowData(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, (int)event.window.data1, (int)event.window.data2); ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, (int)event.window.data1, (int)event.window.data2);
} }
ImGui_ImplVulkan_NewFrame(); ImGui_ImplVulkan_NewFrame();
ImGui_ImplSDL2_NewFrame(window); ImGui_ImplSDL2_NewFrame(window);
@ -516,10 +472,11 @@ int main(int, char**)
} }
// Rendering // Rendering
ImGui::Render();
memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float)); memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
frame_begin(wd); FrameBegin(wd);
ImGui_ImplVulkan_Render(wd->Frames[wd->FrameIndex].CommandBuffer); ImGui_ImplVulkan_Render(wd->Frames[wd->FrameIndex].CommandBuffer);
frame_end(wd); FrameEnd(wd);
ImGui::RenderAdditionalViewports(); ImGui::RenderAdditionalViewports();
@ -527,9 +484,9 @@ int main(int, char**)
// When IMGUI_UNLIMITED_FRAME_RATE is defined we render into latest image acquired from the swapchain but we display the image which was rendered before. // When IMGUI_UNLIMITED_FRAME_RATE is defined we render into latest image acquired from the swapchain but we display the image which was rendered before.
// Hence we must render once and increase the FrameIndex without presenting. // Hence we must render once and increase the FrameIndex without presenting.
if (swap_chain_has_at_least_one_image) if (swap_chain_has_at_least_one_image)
frame_present(wd); FramePresent(wd);
#else #else
frame_present(wd); FramePresent(wd);
#endif #endif
swap_chain_has_at_least_one_image = true; swap_chain_has_at_least_one_image = true;
wd->FrameIndex = (wd->FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES; wd->FrameIndex = (wd->FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES;
@ -542,7 +499,7 @@ int main(int, char**)
ImGui_ImplSDL2_Shutdown(); ImGui_ImplSDL2_Shutdown();
ImGui::DestroyContext(); ImGui::DestroyContext();
SDL_DestroyWindow(window); SDL_DestroyWindow(window);
cleanup_vulkan(); CleanupVulkan();
SDL_Quit(); SDL_Quit();
return 0; return 0;

152
examples/vulkan_example/main.cpp
Unescape View File

@ -47,10 +47,12 @@ static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags,
} }
#endif // IMGUI_VULKAN_DEBUG_REPORT #endif // IMGUI_VULKAN_DEBUG_REPORT
static void CreateVulkanInstance(const char** extensions, uint32_t extensions_count) static void SetupVulkan(const char** extensions, uint32_t extensions_count)
{ {
VkResult err; VkResult err;
// Create Vulkan Instance
{
VkInstanceCreateInfo create_info = {}; VkInstanceCreateInfo create_info = {};
create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO; create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
create_info.enabledExtensionCount = extensions_count; create_info.enabledExtensionCount = extensions_count;
@ -91,13 +93,7 @@ static void CreateVulkanInstance(const char** extensions, uint32_t extensions_co
err = vkCreateInstance(&create_info, g_Allocator, &g_Instance); err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
check_vk_result(err); check_vk_result(err);
#endif #endif
} }
static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
{
IM_ASSERT(wd->Surface != NULL);
VkResult err;
// Select GPU // Select GPU
{ {
@ -132,34 +128,6 @@ static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
IM_ASSERT(g_QueueFamily != -1); IM_ASSERT(g_QueueFamily != -1);
} }
// Check for WSI support
{
VkBool32 res;
vkGetPhysicalDeviceSurfaceSupportKHR(g_PhysicalDevice, g_QueueFamily, wd->Surface, &res);
if (res != VK_TRUE)
{
fprintf(stderr, "Error no WSI support on physical device 0\n");
exit(-1);
}
}
// Get Surface Format
{
const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
}
// Get Present Mode
{
#ifdef IMGUI_UNLIMITED_FRAME_RATE
VkPresentModeKHR present_mode = VK_PRESENT_MODE_IMMEDIATE_KHR;
#else
VkPresentModeKHR present_mode = VK_PRESENT_MODE_FIFO_KHR;
#endif
wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_mode, 1);
}
// Create Logical Device (with 1 queue) // Create Logical Device (with 1 queue)
{ {
int device_extension_count = 1; int device_extension_count = 1;
@ -181,44 +149,6 @@ static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
vkGetDeviceQueue(g_Device, g_QueueFamily, 0, &g_Queue); vkGetDeviceQueue(g_Device, g_QueueFamily, 0, &g_Queue);
} }
// Create Command Buffers
for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++)
{
ImGui_ImplVulkan_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 = g_QueueFamily;
err = vkCreateCommandPool(g_Device, &info, g_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(g_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(g_Device, &info, g_Allocator, &fd->Fence);
check_vk_result(err);
}
{
VkSemaphoreCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
err = vkCreateSemaphore(g_Device, &info, g_Allocator, &fd->PresentCompleteSemaphore);
check_vk_result(err);
err = vkCreateSemaphore(g_Device, &info, g_Allocator, &fd->RenderCompleteSemaphore);
check_vk_result(err);
}
}
// Create Descriptor Pool // Create Descriptor Pool
{ {
VkDescriptorPoolSize pool_sizes[] = VkDescriptorPoolSize pool_sizes[] =
@ -246,11 +176,42 @@ static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
} }
} }
static void cleanup_vulkan() static void SetupVulkanWindowData(ImGui_ImplVulkan_WindowData* wd, VkSurfaceKHR surface, int width, int height)
{
wd->Surface = surface;
// Check for WSI support
VkBool32 res;
vkGetPhysicalDeviceSurfaceSupportKHR(g_PhysicalDevice, g_QueueFamily, wd->Surface, &res);
if (res != VK_TRUE)
{
fprintf(stderr, "Error no WSI support on physical device 0\n");
exit(-1);
}
// Get Surface Format
const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
// Get Present Mode
#ifdef IMGUI_UNLIMITED_FRAME_RATE
VkPresentModeKHR present_mode = VK_PRESENT_MODE_IMMEDIATE_KHR;
#else
VkPresentModeKHR present_mode = VK_PRESENT_MODE_FIFO_KHR;
#endif
wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_mode, 1);
// Create SwapChain, RenderPass, Framebuffer, etc.
ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(g_PhysicalDevice, g_Device, g_QueueFamily, wd, g_Allocator);
ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, wd, g_Allocator, width, height);
}
static void CleanupVulkan()
{ {
ImGui_ImplVulkan_WindowData* wd = &g_WindowData; ImGui_ImplVulkan_WindowData* wd = &g_WindowData;
vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
ImGui_ImplVulkanH_DestroyWindowData(g_Instance, g_Device, wd, g_Allocator); ImGui_ImplVulkanH_DestroyWindowData(g_Instance, g_Device, wd, g_Allocator);
vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
#ifdef IMGUI_VULKAN_DEBUG_REPORT #ifdef IMGUI_VULKAN_DEBUG_REPORT
// Remove the debug report callback // Remove the debug report callback
@ -262,7 +223,7 @@ static void cleanup_vulkan()
vkDestroyInstance(g_Instance, g_Allocator); vkDestroyInstance(g_Instance, g_Allocator);
} }
static void frame_begin(ImGui_ImplVulkan_WindowData* wd) static void FrameBegin(ImGui_ImplVulkan_WindowData* wd)
{ {
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[wd->FrameIndex]; ImGui_ImplVulkan_FrameData* fd = &wd->Frames[wd->FrameIndex];
VkResult err; VkResult err;
@ -299,7 +260,7 @@ static void frame_begin(ImGui_ImplVulkan_WindowData* wd)
} }
} }
static void frame_end(ImGui_ImplVulkan_WindowData* wd) static void FrameEnd(ImGui_ImplVulkan_WindowData* wd)
{ {
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[wd->FrameIndex]; ImGui_ImplVulkan_FrameData* fd = &wd->Frames[wd->FrameIndex];
VkResult err; VkResult err;
@ -325,14 +286,14 @@ static void frame_end(ImGui_ImplVulkan_WindowData* wd)
} }
} }
static void frame_present(ImGui_ImplVulkan_WindowData* wd) static void FramePresent(ImGui_ImplVulkan_WindowData* wd)
{ {
VkResult err; VkResult err;
// If IMGUI_UNLIMITED_FRAME_RATE is defined we present the latest but one frame. Otherwise we present the latest rendered frame // If IMGUI_UNLIMITED_FRAME_RATE is defined we present the latest but one frame. Otherwise we present the latest rendered frame
#ifdef IMGUI_UNLIMITED_FRAME_RATE #ifdef IMGUI_UNLIMITED_FRAME_RATE
uint32_t PresentIndex = (wd->FrameIndex + IMGUI_VK_QUEUED_FRAMES - 1) % IMGUI_VK_QUEUED_FRAMES; uint32_t PresentIndex = (wd->FrameIndex + IMGUI_VK_QUEUED_FRAMES - 1) % IMGUI_VK_QUEUED_FRAMES;
#else #else
uint32_t PresentIndex = g_FrameIndex; uint32_t PresentIndex = wd->FrameIndex;
#endif // IMGUI_UNLIMITED_FRAME_RATE #endif // IMGUI_UNLIMITED_FRAME_RATE
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[PresentIndex]; ImGui_ImplVulkan_FrameData* fd = &wd->Frames[PresentIndex];
@ -354,7 +315,7 @@ static void glfw_error_callback(int error, const char* description)
static void glfw_resize_callback(GLFWwindow*, int w, int h) static void glfw_resize_callback(GLFWwindow*, int w, int h)
{ {
ImGui_ImplVulkanH_CreateOrResizeWindowData(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, w, h); ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, w, h);
} }
int main(int, char**) int main(int, char**)
@ -373,26 +334,24 @@ int main(int, char**)
printf("GLFW: Vulkan Not Supported\n"); printf("GLFW: Vulkan Not Supported\n");
return 1; return 1;
} }
uint32_t glfw_extensions_count = 0; uint32_t extensions_count = 0;
const char** glfw_extensions = glfwGetRequiredInstanceExtensions(&glfw_extensions_count); const char** extensions = glfwGetRequiredInstanceExtensions(&extensions_count);
CreateVulkanInstance(glfw_extensions, glfw_extensions_count); SetupVulkan(extensions, extensions_count);
// Create Window Surface // Create Window Surface
ImGui_ImplVulkan_WindowData* wd = &g_WindowData; VkSurfaceKHR surface;
VkResult err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &wd->Surface); VkResult err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &surface);
check_vk_result(err); check_vk_result(err);
SetupVulkan(wd);
// Create Framebuffers // Create Framebuffers
int w, h; int w, h;
glfwGetFramebufferSize(window, &w, &h); glfwGetFramebufferSize(window, &w, &h);
ImGui_ImplVulkanH_CreateOrResizeWindowData(g_PhysicalDevice, g_Device, wd, g_Allocator, w, h);
glfwSetFramebufferSizeCallback(window, glfw_resize_callback); glfwSetFramebufferSizeCallback(window, glfw_resize_callback);
ImGui_ImplVulkan_WindowData* wd = &g_WindowData;
SetupVulkanWindowData(wd, surface, w, h);
// Setup ImGui binding // Setup ImGui binding
ImGui::CreateContext(); ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io; ImGuiIO& io = ImGui::GetIO(); (void)io;
io.ConfigFlags |= ImGuiConfigFlags_MultiViewports; io.ConfigFlags |= ImGuiConfigFlags_MultiViewports;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
@ -405,8 +364,8 @@ int main(int, char**)
init_info.DescriptorPool = g_DescriptorPool; init_info.DescriptorPool = g_DescriptorPool;
init_info.Allocator = g_Allocator; init_info.Allocator = g_Allocator;
init_info.CheckVkResultFn = check_vk_result; init_info.CheckVkResultFn = check_vk_result;
ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
ImGui_ImplGlfw_InitForVulkan(window, true); ImGui_ImplGlfw_InitForVulkan(window, true);
ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
// Setup style // Setup style
ImGui::StyleColorsDark(); ImGui::StyleColorsDark();
@ -513,10 +472,11 @@ int main(int, char**)
} }
// Rendering // Rendering
ImGui::Render();
memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float)); memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
frame_begin(wd); FrameBegin(wd);
ImGui_ImplVulkan_Render(wd->Frames[wd->FrameIndex].CommandBuffer); ImGui_ImplVulkan_Render(wd->Frames[wd->FrameIndex].CommandBuffer);
frame_end(wd); FrameEnd(wd);
ImGui::RenderAdditionalViewports(); ImGui::RenderAdditionalViewports();
@ -524,9 +484,9 @@ int main(int, char**)
// When IMGUI_UNLIMITED_FRAME_RATE is defined we render into latest image acquired from the swapchain but we display the image which was rendered before. // When IMGUI_UNLIMITED_FRAME_RATE is defined we render into latest image acquired from the swapchain but we display the image which was rendered before.
// Hence we must render once and increase the FrameIndex without presenting. // Hence we must render once and increase the FrameIndex without presenting.
if (swap_chain_has_at_least_one_image) if (swap_chain_has_at_least_one_image)
frame_present(wd); FramePresent(wd);
#else #else
frame_present(wd); FramePresent(wd);
#endif #endif
swap_chain_has_at_least_one_image = true; swap_chain_has_at_least_one_image = true;
wd->FrameIndex = (wd->FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES; wd->FrameIndex = (wd->FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES;
@ -538,7 +498,7 @@ int main(int, char**)
ImGui_ImplVulkan_Shutdown(); ImGui_ImplVulkan_Shutdown();
ImGui_ImplGlfw_Shutdown(); ImGui_ImplGlfw_Shutdown();
ImGui::DestroyContext(); ImGui::DestroyContext();
cleanup_vulkan(); CleanupVulkan();
glfwTerminate(); glfwTerminate();
return 0; return 0;

Write Preview
Loading…
Cancel
Save