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Examples: Vulkan: Merged helpers into ImGui_ImplVulkanH_CreateWindowData. Removed ImGui_ImplVulkan_InvalidateFrameDeviceObjects from API. Comments. (#2071)

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docking
omar 6 years ago
parent 54b8a65d9e
commit f586764cdd
4 changed files with 59 additions and 36 deletions
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11
examples/example_glfw_vulkan/main.cpp
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@ -1,6 +1,11 @@
// dear imgui: standalone example application for Glfw + Vulkan // dear imgui: standalone example application for Glfw + Vulkan
// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp. // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own application.
// - Common ImGui_ImplVulkan_XXXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
// - Helper ImGui_ImplVulkanH_XXXX functions and structures are used by this example (main.cpp) and by imgui_impl_vulkan.cpp,
// but should PROBABLY NOT be used by your own app code. Read comments in imgui_impl_vulkan.h.
#include "imgui.h" #include "imgui.h"
#include "imgui_impl_glfw.h" #include "imgui_impl_glfw.h"
#include "imgui_impl_vulkan.h" #include "imgui_impl_vulkan.h"
@ -212,8 +217,7 @@ static void SetupVulkanWindowData(ImGui_ImplVulkanH_WindowData* wd, VkSurfaceKHR
//printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode); //printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode);
// Create SwapChain, RenderPass, Framebuffer, etc. // Create SwapChain, RenderPass, Framebuffer, etc.
ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, wd, g_Allocator, width, height, g_MinImageCount); ImGui_ImplVulkanH_CreateWindowData(g_PhysicalDevice, g_Device, wd, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(g_PhysicalDevice, g_Device, g_QueueFamily, wd, g_Allocator);
IM_ASSERT(wd->FramesQueueSize >= 2); IM_ASSERT(wd->FramesQueueSize >= 2);
} }
@ -438,8 +442,7 @@ int main(int, char**)
glfwPollEvents(); glfwPollEvents();
if (g_WantSwapChainRebuild) if (g_WantSwapChainRebuild)
{ {
ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, g_ResizeWidth, g_ResizeHeight, g_MinImageCount); ImGui_ImplVulkanH_CreateWindowData(g_PhysicalDevice, g_Device, &g_WindowData, g_QueueFamily, g_Allocator, g_ResizeWidth, g_ResizeHeight, g_MinImageCount);
ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(g_PhysicalDevice, g_Device, g_QueueFamily, &g_WindowData, g_Allocator);
ImGui_ImplVulkan_SetFramesQueueSize(g_WindowData.FramesQueueSize); ImGui_ImplVulkan_SetFramesQueueSize(g_WindowData.FramesQueueSize);
g_WindowData.FrameIndex = 0; g_WindowData.FrameIndex = 0;
g_WantSwapChainRebuild = false; g_WantSwapChainRebuild = false;

11
examples/example_sdl_vulkan/main.cpp
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@ -1,6 +1,11 @@
// dear imgui: standalone example application for SDL2 + Vulkan // dear imgui: standalone example application for SDL2 + Vulkan
// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp. // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own application.
// - Common ImGui_ImplVulkan_XXXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
// - Helper ImGui_ImplVulkanH_XXXX functions and structures are used by this example (main.cpp) and by imgui_impl_vulkan.cpp,
// but should PROBABLY NOT be used by your own app code. Read comments in imgui_impl_vulkan.h.
#include "imgui.h" #include "imgui.h"
#include "imgui_impl_sdl.h" #include "imgui_impl_sdl.h"
#include "imgui_impl_vulkan.h" #include "imgui_impl_vulkan.h"
@ -203,8 +208,7 @@ static void SetupVulkanWindowData(ImGui_ImplVulkanH_WindowData* wd, VkSurfaceKHR
//printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode); //printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode);
// Create SwapChain, RenderPass, Framebuffer, etc. // Create SwapChain, RenderPass, Framebuffer, etc.
ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, wd, g_Allocator, width, height, g_MinImageCount); ImGui_ImplVulkanH_CreateWindowData(g_PhysicalDevice, g_Device, wd, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(g_PhysicalDevice, g_Device, g_QueueFamily, wd, g_Allocator);
IM_ASSERT(wd->FramesQueueSize >= 2); IM_ASSERT(wd->FramesQueueSize >= 2);
} }
@ -435,8 +439,7 @@ int main(int, char**)
if (g_WantSwapChainRebuild) if (g_WantSwapChainRebuild)
{ {
ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, g_WindowData.Width, g_WindowData.Height, g_MinImageCount); ImGui_ImplVulkanH_CreateWindowData(g_PhysicalDevice, g_Device, &g_WindowData, g_QueueFamily, g_Allocator, g_WindowData.Width, g_WindowData.Height, g_MinImageCount);
ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(g_PhysicalDevice, g_Device, g_QueueFamily, &g_WindowData, g_Allocator);
ImGui_ImplVulkan_SetFramesQueueSize(g_WindowData.FramesQueueSize); ImGui_ImplVulkan_SetFramesQueueSize(g_WindowData.FramesQueueSize);
g_WindowData.FrameIndex = 0; g_WindowData.FrameIndex = 0;
g_WantSwapChainRebuild = false; g_WantSwapChainRebuild = false;

57
examples/imgui_impl_vulkan.cpp
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@ -78,6 +78,15 @@ static VkImageView g_FontView = VK_NULL_HANDLE;
static VkDeviceMemory g_UploadBufferMemory = VK_NULL_HANDLE; static VkDeviceMemory g_UploadBufferMemory = VK_NULL_HANDLE;
static VkBuffer g_UploadBuffer = VK_NULL_HANDLE; static VkBuffer g_UploadBuffer = VK_NULL_HANDLE;
// Forward Declarations
void ImGui_ImplVulkanH_DestroyFrameData(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_FrameData* fd, const VkAllocationCallbacks* allocator);
void ImGui_ImplVulkanH_CreateWindowDataSwapChain(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count);
void ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator);
//-----------------------------------------------------------------------------
// SHADERS
//-----------------------------------------------------------------------------
// glsl_shader.vert, compiled with: // glsl_shader.vert, compiled with:
// # glslangValidator -V -x -o glsl_shader.vert.u32 glsl_shader.vert // # glslangValidator -V -x -o glsl_shader.vert.u32 glsl_shader.vert
/* /*
@ -183,6 +192,10 @@ static uint32_t __glsl_shader_frag_spv[] =
0x00010038 0x00010038
}; };
//-----------------------------------------------------------------------------
// FUNCTIONS
//-----------------------------------------------------------------------------
static uint32_t ImGui_ImplVulkan_MemoryType(VkMemoryPropertyFlags properties, uint32_t type_bits) static uint32_t ImGui_ImplVulkan_MemoryType(VkMemoryPropertyFlags properties, uint32_t type_bits)
{ {
VkPhysicalDeviceMemoryProperties prop; VkPhysicalDeviceMemoryProperties prop;
@ -727,8 +740,22 @@ void ImGui_ImplVulkan_InvalidateFontUploadObjects()
} }
} }
static void ImGui_ImplVulkan_InvalidateFrameDeviceObjects()
{
for (int i = 0; i < g_FramesDataBuffers.Size; i++)
{
FrameDataForRender* fd = &g_FramesDataBuffers[i];
if (fd->VertexBuffer) { vkDestroyBuffer(g_Device, fd->VertexBuffer, g_Allocator); fd->VertexBuffer = VK_NULL_HANDLE; }
if (fd->VertexBufferMemory) { vkFreeMemory (g_Device, fd->VertexBufferMemory, g_Allocator); fd->VertexBufferMemory = VK_NULL_HANDLE; }
if (fd->IndexBuffer) { vkDestroyBuffer(g_Device, fd->IndexBuffer, g_Allocator); fd->IndexBuffer = VK_NULL_HANDLE; }
if (fd->IndexBufferMemory) { vkFreeMemory (g_Device, fd->IndexBufferMemory, g_Allocator); fd->IndexBufferMemory = VK_NULL_HANDLE; }
}
g_FramesDataBuffers.clear();
}
void ImGui_ImplVulkan_InvalidateDeviceObjects() void ImGui_ImplVulkan_InvalidateDeviceObjects()
{ {
ImGui_ImplVulkan_InvalidateFrameDeviceObjects();
ImGui_ImplVulkan_InvalidateFontUploadObjects(); ImGui_ImplVulkan_InvalidateFontUploadObjects();
if (g_FontView) { vkDestroyImageView(g_Device, g_FontView, g_Allocator); g_FontView = VK_NULL_HANDLE; } if (g_FontView) { vkDestroyImageView(g_Device, g_FontView, g_Allocator); g_FontView = VK_NULL_HANDLE; }
@ -740,19 +767,6 @@ void ImGui_ImplVulkan_InvalidateDeviceObjects()
if (g_Pipeline) { vkDestroyPipeline(g_Device, g_Pipeline, g_Allocator); g_Pipeline = VK_NULL_HANDLE; } if (g_Pipeline) { vkDestroyPipeline(g_Device, g_Pipeline, g_Allocator); g_Pipeline = VK_NULL_HANDLE; }
} }
void ImGui_ImplVulkan_InvalidateFrameDeviceObjects()
{
for (int i = 0; i < g_FramesDataBuffers.Size; i++)
{
FrameDataForRender* fd = &g_FramesDataBuffers[i];
if (fd->VertexBuffer) { vkDestroyBuffer(g_Device, fd->VertexBuffer, g_Allocator); fd->VertexBuffer = VK_NULL_HANDLE; }
if (fd->VertexBufferMemory) { vkFreeMemory (g_Device, fd->VertexBufferMemory, g_Allocator); fd->VertexBufferMemory = VK_NULL_HANDLE; }
if (fd->IndexBuffer) { vkDestroyBuffer(g_Device, fd->IndexBuffer, g_Allocator); fd->IndexBuffer = VK_NULL_HANDLE; }
if (fd->IndexBufferMemory) { vkFreeMemory (g_Device, fd->IndexBufferMemory, g_Allocator); fd->IndexBufferMemory = VK_NULL_HANDLE; }
}
g_FramesDataBuffers.clear();
}
bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass) bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass)
{ {
ImGuiIO& io = ImGui::GetIO(); ImGuiIO& io = ImGui::GetIO();
@ -788,7 +802,6 @@ bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass rend
void ImGui_ImplVulkan_Shutdown() void ImGui_ImplVulkan_Shutdown()
{ {
ImGui_ImplVulkan_InvalidateFrameDeviceObjects();
ImGui_ImplVulkan_InvalidateDeviceObjects(); ImGui_ImplVulkan_InvalidateDeviceObjects();
} }
@ -811,6 +824,7 @@ void ImGui_ImplVulkan_SetFramesQueueSize(int frames_queue_size)
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
// Internal / Miscellaneous Vulkan Helpers // Internal / Miscellaneous Vulkan Helpers
// (Used by example's main.cpp. Used by multi-viewport features. PROBABLY NOT used by your own app.)
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
// You probably do NOT need to use or care about those functions. // You probably do NOT need to use or care about those functions.
// Those functions only exist because: // Those functions only exist because:
@ -818,9 +832,10 @@ void ImGui_ImplVulkan_SetFramesQueueSize(int frames_queue_size)
// 2) the upcoming multi-viewport feature will need them internally. // 2) the upcoming multi-viewport feature will need them internally.
// Generally we avoid exposing any kind of superfluous high-level helpers in the bindings, // Generally we avoid exposing any kind of superfluous high-level helpers in the bindings,
// but it is too much code to duplicate everywhere so we exceptionally expose them. // but it is too much code to duplicate everywhere so we exceptionally expose them.
// Your application/engine will likely already have code to setup all that stuff (swap chain, render pass, frame buffers, etc.). //
// Your application/engine will likely _already_ have code to setup all that stuff (swap chain, render pass, frame buffers, etc.).
// You may read this code to learn about Vulkan, but it is recommended you use you own custom tailored code to do equivalent work. // You may read this code to learn about Vulkan, but it is recommended you use you own custom tailored code to do equivalent work.
// (those functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions) // (The ImGui_ImplVulkanH_XXX functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions)
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
#include <stdlib.h> // malloc #include <stdlib.h> // malloc
@ -917,7 +932,7 @@ 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_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, uint32_t queue_family, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator) void ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator)
{ {
IM_ASSERT(physical_device != VK_NULL_HANDLE && device != VK_NULL_HANDLE); IM_ASSERT(physical_device != VK_NULL_HANDLE && device != VK_NULL_HANDLE);
(void)physical_device; (void)physical_device;
@ -975,7 +990,7 @@ int ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(VkPresentModeKHR present_m
return 1; return 1;
} }
void ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count) void ImGui_ImplVulkanH_CreateWindowDataSwapChain(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count)
{ {
VkResult err; VkResult err;
VkSwapchainKHR old_swapchain = wd->Swapchain; VkSwapchainKHR old_swapchain = wd->Swapchain;
@ -1126,6 +1141,12 @@ void ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice
} }
} }
void ImGui_ImplVulkanH_CreateWindowData(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator, int width, int height, uint32_t min_image_count)
{
ImGui_ImplVulkanH_CreateWindowDataSwapChain(physical_device, device, wd, allocator, width, height, min_image_count);
ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(physical_device, device, wd, queue_family, allocator);
}
void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator) void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator)
{ {
vkDeviceWaitIdle(device); // FIXME: We could wait on the Queue if we had the queue in wd-> (otherwise VulkanH functions can't use globals) vkDeviceWaitIdle(device); // FIXME: We could wait on the Queue if we had the queue in wd-> (otherwise VulkanH functions can't use globals)

16
examples/imgui_impl_vulkan.h
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@ -15,8 +15,6 @@
#include <vulkan/vulkan.h> #include <vulkan/vulkan.h>
//#define IMGUI_VK_QUEUED_FRAMES 2
// Please zero-clear before use. // Please zero-clear before use.
struct ImGui_ImplVulkan_InitInfo struct ImGui_ImplVulkan_InitInfo
{ {
@ -41,15 +39,14 @@ IMGUI_IMPL_API void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, V
IMGUI_IMPL_API bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer); IMGUI_IMPL_API bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer);
IMGUI_IMPL_API void ImGui_ImplVulkan_InvalidateFontUploadObjects(); IMGUI_IMPL_API void ImGui_ImplVulkan_InvalidateFontUploadObjects();
// Called by ImGui_ImplVulkan_Init() might be useful elsewhere. // Called by ImGui_ImplVulkan_Init(), might be useful elsewhere.
IMGUI_IMPL_API bool ImGui_ImplVulkan_CreateDeviceObjects(); IMGUI_IMPL_API bool ImGui_ImplVulkan_CreateDeviceObjects();
IMGUI_IMPL_API void ImGui_ImplVulkan_InvalidateDeviceObjects(); IMGUI_IMPL_API void ImGui_ImplVulkan_InvalidateDeviceObjects();
IMGUI_IMPL_API void ImGui_ImplVulkan_InvalidateFrameDeviceObjects();
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
// Internal / Miscellaneous Vulkan Helpers // Internal / Miscellaneous Vulkan Helpers
// (Used by example's main.cpp. Used by multi-viewport features. Probably NOT used by your own app.) // (Used by example's main.cpp. Used by multi-viewport features. PROBABLY NOT used by your own app.)
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
// You probably do NOT need to use or care about those functions. // You probably do NOT need to use or care about those functions.
// Those functions only exist because: // Those functions only exist because:
@ -57,18 +54,17 @@ IMGUI_IMPL_API void ImGui_ImplVulkan_InvalidateFrameDeviceObjects();
// 2) the upcoming multi-viewport feature will need them internally. // 2) the upcoming multi-viewport feature will need them internally.
// Generally we avoid exposing any kind of superfluous high-level helpers in the bindings, // Generally we avoid exposing any kind of superfluous high-level helpers in the bindings,
// but it is too much code to duplicate everywhere so we exceptionally expose them. // but it is too much code to duplicate everywhere so we exceptionally expose them.
// Your application/engine will likely already have code to setup all that stuff (swap chain, render pass, frame buffers, etc.). //
// Your application/engine will likely _already_ have code to setup all that stuff (swap chain, render pass, frame buffers, etc.).
// You may read this code to learn about Vulkan, but it is recommended you use you own custom tailored code to do equivalent work. // You may read this code to learn about Vulkan, but it is recommended you use you own custom tailored code to do equivalent work.
// (those functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions) // (The ImGui_ImplVulkanH_XXX functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions)
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
struct ImGui_ImplVulkanH_FrameData; struct ImGui_ImplVulkanH_FrameData;
struct ImGui_ImplVulkanH_WindowData; struct ImGui_ImplVulkanH_WindowData;
IMGUI_IMPL_API void ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, uint32_t queue_family, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator); IMGUI_IMPL_API void ImGui_ImplVulkanH_CreateWindowData(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count);
IMGUI_IMPL_API void ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count);
IMGUI_IMPL_API void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator); IMGUI_IMPL_API void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator);
IMGUI_IMPL_API void ImGui_ImplVulkanH_DestroyFrameData(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_FrameData* fd, const VkAllocationCallbacks* allocator);
IMGUI_IMPL_API VkSurfaceFormatKHR ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space); IMGUI_IMPL_API VkSurfaceFormatKHR ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space);
IMGUI_IMPL_API VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count); IMGUI_IMPL_API VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count);
IMGUI_IMPL_API int ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(VkPresentModeKHR present_mode); IMGUI_IMPL_API int ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(VkPresentModeKHR present_mode);

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