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- // dear imgui: Renderer Backend for Vulkan
- // This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
- // Implemented features:
- // [!] Renderer: User texture binding. Use 'VkDescriptorSet' as texture identifier. Call ImGui_ImplVulkan_AddTexture() to register one. Read the FAQ about ImTextureID/ImTextureRef + https://github.com/ocornut/imgui/pull/914 for discussions.
- // [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
- // [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
- // [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
- // The aim of imgui_impl_vulkan.h/.cpp is to be usable in your engine without any modification.
- // IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
- // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
- // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
- // Learn about Dear ImGui:
- // - FAQ https://dearimgui.com/faq
- // - Getting Started https://dearimgui.com/getting-started
- // - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
- // - Introduction, links and more at the top of imgui.cpp
- // Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
- // - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
- // You will use those if you want to use this rendering backend in your engine/app.
- // - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
- // the backend itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
- // Read comments in imgui_impl_vulkan.h.
- // CHANGELOG
- // (minor and older changes stripped away, please see git history for details)
- // 2025-07-07: Vulkan: Fixed texture synchronization issue introduced on 2025-06-11. (#8772)
- // 2025-06-27: Vulkan: Fixed validation errors during texture upload/update by aligning upload size to 'nonCoherentAtomSize'. (#8743, #8744)
- // 2025-06-11: Vulkan: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. Removed ImGui_ImplVulkan_CreateFontsTexture() and ImGui_ImplVulkan_DestroyFontsTexture().
- // 2025-05-07: Vulkan: Fixed validation errors during window detach in multi-viewport mode. (#8600, #8176)
- // 2025-05-07: Vulkan: Load dynamic rendering functions using vkGetDeviceProcAddr() + try both non-KHR and KHR versions. (#8600, #8326, #8365)
- // 2025-04-07: Vulkan: Deep-copy ImGui_ImplVulkan_InitInfo::PipelineRenderingCreateInfo's pColorAttachmentFormats buffer when set, in order to reduce common user-error of specifying a pointer to data that gets out of scope. (#8282)
- // 2025-02-14: *BREAKING CHANGE*: Added uint32_t api_version to ImGui_ImplVulkan_LoadFunctions().
- // 2025-02-13: Vulkan: Added ApiVersion field in ImGui_ImplVulkan_InitInfo. Default to header version if unspecified. Dynamic rendering path loads "vkCmdBeginRendering/vkCmdEndRendering" (without -KHR suffix) on API 1.3. (#8326)
- // 2025-01-09: Vulkan: Added IMGUI_IMPL_VULKAN_MINIMUM_IMAGE_SAMPLER_POOL_SIZE to clarify how many image sampler descriptors are expected to be available in descriptor pool. (#6642)
- // 2025-01-06: Vulkan: Added more ImGui_ImplVulkanH_XXXX helper functions to simplify our examples.
- // 2024-12-11: Vulkan: Fixed setting VkSwapchainCreateInfoKHR::preTransform for platforms not supporting VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR. (#8222)
- // 2024-11-27: Vulkan: Make user-provided descriptor pool optional. As a convenience, when setting init_info->DescriptorPoolSize the backend will create one itself. (#8172, #4867)
- // 2024-10-07: Vulkan: Changed default texture sampler to Clamp instead of Repeat/Wrap.
- // 2024-10-07: Vulkan: Expose selected render state in ImGui_ImplVulkan_RenderState, which you can access in 'void* platform_io.Renderer_RenderState' during draw callbacks.
- // 2024-10-07: Vulkan: Compiling with '#define ImTextureID=ImU64' is unnecessary now that dear imgui defaults ImTextureID to u64 instead of void*.
- // 2024-04-19: Vulkan: Added convenience support for Volk via IMGUI_IMPL_VULKAN_USE_VOLK define (you can also use IMGUI_IMPL_VULKAN_NO_PROTOTYPES + wrap Volk via ImGui_ImplVulkan_LoadFunctions().)
- // 2024-02-14: *BREAKING CHANGE*: Moved RenderPass parameter from ImGui_ImplVulkan_Init() function to ImGui_ImplVulkan_InitInfo structure. Not required when using dynamic rendering.
- // 2024-02-12: *BREAKING CHANGE*: Dynamic rendering now require filling PipelineRenderingCreateInfo structure.
- // 2024-01-19: Vulkan: Fixed vkAcquireNextImageKHR() validation errors in VulkanSDK 1.3.275 by allocating one extra semaphore than in-flight frames. (#7236)
- // 2024-01-11: Vulkan: Fixed vkMapMemory() calls unnecessarily using full buffer size (#3957). Fixed MinAllocationSize handing (#7189).
- // 2024-01-03: Vulkan: Added MinAllocationSize field in ImGui_ImplVulkan_InitInfo to workaround zealous "best practice" validation layer. (#7189, #4238)
- // 2024-01-03: Vulkan: Stopped creating command pools with VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT as we don't reset them.
- // 2023-11-29: Vulkan: Fixed mismatching allocator passed to vkCreateCommandPool() vs vkDestroyCommandPool(). (#7075)
- // 2023-11-10: *BREAKING CHANGE*: Removed parameter from ImGui_ImplVulkan_CreateFontsTexture(): backend now creates its own command-buffer to upload fonts.
- // *BREAKING CHANGE*: Removed ImGui_ImplVulkan_DestroyFontUploadObjects() which is now unnecessary as we create and destroy those objects in the backend.
- // ImGui_ImplVulkan_CreateFontsTexture() is automatically called by NewFrame() the first time.
- // You can call ImGui_ImplVulkan_CreateFontsTexture() again to recreate the font atlas texture.
- // Added ImGui_ImplVulkan_DestroyFontsTexture() but you probably never need to call this.
- // 2023-07-04: Vulkan: Added optional support for VK_KHR_dynamic_rendering. User needs to set init_info->UseDynamicRendering = true and init_info->ColorAttachmentFormat.
- // 2023-01-02: Vulkan: Fixed sampler passed to ImGui_ImplVulkan_AddTexture() not being honored + removed a bunch of duplicate code.
- // 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11.
- // 2022-10-04: Vulkan: Added experimental ImGui_ImplVulkan_RemoveTexture() for api symmetry. (#914, #5738).
- // 2022-01-20: Vulkan: Added support for ImTextureID as VkDescriptorSet. User need to call ImGui_ImplVulkan_AddTexture(). Building for 32-bit targets requires '#define ImTextureID ImU64'. (#914).
- // 2021-10-15: Vulkan: Call vkCmdSetScissor() at the end of render a full-viewport to reduce likelihood of issues with people using VK_DYNAMIC_STATE_SCISSOR in their app without calling vkCmdSetScissor() explicitly every frame.
- // 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX).
- // 2021-03-22: Vulkan: Fix mapped memory validation error when buffer sizes are not multiple of VkPhysicalDeviceLimits::nonCoherentAtomSize.
- // 2021-02-18: Vulkan: Change blending equation to preserve alpha in output buffer.
- // 2021-01-27: Vulkan: Added support for custom function load and IMGUI_IMPL_VULKAN_NO_PROTOTYPES by using ImGui_ImplVulkan_LoadFunctions().
- // 2020-11-11: Vulkan: Added support for specifying which subpass to reference during VkPipeline creation.
- // 2020-09-07: Vulkan: Added VkPipeline parameter to ImGui_ImplVulkan_RenderDrawData (default to one passed to ImGui_ImplVulkan_Init).
- // 2020-05-04: Vulkan: Fixed crash if initial frame has no vertices.
- // 2020-04-26: Vulkan: Fixed edge case where render callbacks wouldn't be called if the ImDrawData didn't have vertices.
- // 2019-08-01: Vulkan: Added support for specifying multisample count. Set ImGui_ImplVulkan_InitInfo::MSAASamples to one of the VkSampleCountFlagBits values to use, default is non-multisampled as before.
- // 2019-05-29: Vulkan: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
- // 2019-04-30: Vulkan: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
- // 2019-04-04: *BREAKING CHANGE*: Vulkan: Added ImageCount/MinImageCount fields in ImGui_ImplVulkan_InitInfo, required for initialization (was previously a hard #define IMGUI_VK_QUEUED_FRAMES 2). Added ImGui_ImplVulkan_SetMinImageCount().
- // 2019-04-04: Vulkan: Added VkInstance argument to ImGui_ImplVulkanH_CreateWindow() optional helper.
- // 2019-04-04: Vulkan: Avoid passing negative coordinates to vkCmdSetScissor, which debug validation layers do not like.
- // 2019-04-01: Vulkan: Support for 32-bit index buffer (#define ImDrawIdx unsigned int).
- // 2019-02-16: Vulkan: Viewport and clipping rectangles correctly using draw_data->FramebufferScale to allow retina display.
- // 2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
- // 2018-08-25: Vulkan: Fixed mishandled VkSurfaceCapabilitiesKHR::maxImageCount=0 case.
- // 2018-06-22: Inverted the parameters to ImGui_ImplVulkan_RenderDrawData() to be consistent with other backends.
- // 2018-06-08: Misc: Extracted imgui_impl_vulkan.cpp/.h away from the old combined GLFW+Vulkan example.
- // 2018-06-08: Vulkan: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
- // 2018-03-03: Vulkan: Various refactor, created a couple of ImGui_ImplVulkanH_XXX helper that the example can use and that viewport support will use.
- // 2018-03-01: Vulkan: Renamed ImGui_ImplVulkan_Init_Info to ImGui_ImplVulkan_InitInfo and fields to match more closely Vulkan terminology.
- // 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback, ImGui_ImplVulkan_Render() calls ImGui_ImplVulkan_RenderDrawData() itself.
- // 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
- // 2017-05-15: Vulkan: Fix scissor offset being negative. Fix new Vulkan validation warnings. Set required depth member for buffer image copy.
- // 2016-11-13: Vulkan: Fix validation layer warnings and errors and redeclare gl_PerVertex.
- // 2016-10-18: Vulkan: Add location decorators & change to use structs as in/out in glsl, update embedded spv (produced with glslangValidator -x). Null the released resources.
- // 2016-08-27: Vulkan: Fix Vulkan example for use when a depth buffer is active.
- #include "imgui.h"
- #ifndef IMGUI_DISABLE
- #include "imgui_impl_vulkan.h"
- #include <stdio.h>
- #ifndef IM_MAX
- #define IM_MAX(A, B) (((A) >= (B)) ? (A) : (B))
- #endif
- #undef Status // X11 headers are leaking this.
- // Visual Studio warnings
- #ifdef _MSC_VER
- #pragma warning (disable: 4127) // condition expression is constant
- #endif
- // Forward Declarations
- struct ImGui_ImplVulkan_FrameRenderBuffers;
- struct ImGui_ImplVulkan_WindowRenderBuffers;
- bool ImGui_ImplVulkan_CreateDeviceObjects();
- void ImGui_ImplVulkan_DestroyDeviceObjects();
- void ImGui_ImplVulkan_DestroyFrameRenderBuffers(VkDevice device, ImGui_ImplVulkan_FrameRenderBuffers* buffers, const VkAllocationCallbacks* allocator);
- void ImGui_ImplVulkan_DestroyWindowRenderBuffers(VkDevice device, ImGui_ImplVulkan_WindowRenderBuffers* buffers, const VkAllocationCallbacks* allocator);
- void ImGui_ImplVulkanH_DestroyFrame(VkDevice device, ImGui_ImplVulkanH_Frame* fd, const VkAllocationCallbacks* allocator);
- void ImGui_ImplVulkanH_DestroyFrameSemaphores(VkDevice device, ImGui_ImplVulkanH_FrameSemaphores* fsd, const VkAllocationCallbacks* allocator);
- void ImGui_ImplVulkanH_CreateWindowSwapChain(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count);
- void ImGui_ImplVulkanH_CreateWindowCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator);
- // Vulkan prototypes for use with custom loaders
- // (see description of IMGUI_IMPL_VULKAN_NO_PROTOTYPES in imgui_impl_vulkan.h
- #if defined(VK_NO_PROTOTYPES) && !defined(VOLK_H_)
- #define IMGUI_IMPL_VULKAN_USE_LOADER
- static bool g_FunctionsLoaded = false;
- #else
- static bool g_FunctionsLoaded = true;
- #endif
- #ifdef IMGUI_IMPL_VULKAN_USE_LOADER
- #define IMGUI_VULKAN_FUNC_MAP(IMGUI_VULKAN_FUNC_MAP_MACRO) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkAllocateCommandBuffers) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkAllocateDescriptorSets) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkAllocateMemory) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkBeginCommandBuffer) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkBindBufferMemory) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkBindImageMemory) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCmdBindDescriptorSets) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCmdBindIndexBuffer) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCmdBindPipeline) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCmdBindVertexBuffers) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCmdCopyBufferToImage) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCmdDrawIndexed) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCmdPipelineBarrier) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCmdPushConstants) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCmdSetScissor) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCmdSetViewport) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateBuffer) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateCommandPool) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateDescriptorPool) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateDescriptorSetLayout) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateFence) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateFramebuffer) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateGraphicsPipelines) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateImage) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateImageView) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreatePipelineLayout) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateRenderPass) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateSampler) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateSemaphore) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateShaderModule) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkCreateSwapchainKHR) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyBuffer) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyCommandPool) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyDescriptorPool) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyDescriptorSetLayout) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyFence) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyFramebuffer) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyImage) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyImageView) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyPipeline) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyPipelineLayout) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyRenderPass) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroySampler) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroySemaphore) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroyShaderModule) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroySurfaceKHR) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDestroySwapchainKHR) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkDeviceWaitIdle) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkEnumeratePhysicalDevices) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkEndCommandBuffer) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkFlushMappedMemoryRanges) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkFreeCommandBuffers) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkFreeDescriptorSets) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkFreeMemory) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkGetBufferMemoryRequirements) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkGetDeviceQueue) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkGetImageMemoryRequirements) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkGetPhysicalDeviceProperties) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkGetPhysicalDeviceMemoryProperties) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkGetPhysicalDeviceQueueFamilyProperties) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkGetPhysicalDeviceSurfaceCapabilitiesKHR) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkGetPhysicalDeviceSurfaceFormatsKHR) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkGetPhysicalDeviceSurfacePresentModesKHR) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkGetSwapchainImagesKHR) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkMapMemory) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkQueueSubmit) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkQueueWaitIdle) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkResetCommandPool) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkResetFences) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkUnmapMemory) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkUpdateDescriptorSets) \
- IMGUI_VULKAN_FUNC_MAP_MACRO(vkWaitForFences)
- // Define function pointers
- #define IMGUI_VULKAN_FUNC_DEF(func) static PFN_##func func;
- IMGUI_VULKAN_FUNC_MAP(IMGUI_VULKAN_FUNC_DEF)
- #undef IMGUI_VULKAN_FUNC_DEF
- #endif // IMGUI_IMPL_VULKAN_USE_LOADER
- #ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
- static PFN_vkCmdBeginRenderingKHR ImGuiImplVulkanFuncs_vkCmdBeginRenderingKHR;
- static PFN_vkCmdEndRenderingKHR ImGuiImplVulkanFuncs_vkCmdEndRenderingKHR;
- #endif
- // Reusable buffers used for rendering 1 current in-flight frame, for ImGui_ImplVulkan_RenderDrawData()
- // [Please zero-clear before use!]
- struct ImGui_ImplVulkan_FrameRenderBuffers
- {
- VkDeviceMemory VertexBufferMemory;
- VkDeviceMemory IndexBufferMemory;
- VkDeviceSize VertexBufferSize;
- VkDeviceSize IndexBufferSize;
- VkBuffer VertexBuffer;
- VkBuffer IndexBuffer;
- };
- // Each viewport will hold 1 ImGui_ImplVulkanH_WindowRenderBuffers
- // [Please zero-clear before use!]
- struct ImGui_ImplVulkan_WindowRenderBuffers
- {
- uint32_t Index;
- uint32_t Count;
- ImVector<ImGui_ImplVulkan_FrameRenderBuffers> FrameRenderBuffers;
- };
- struct ImGui_ImplVulkan_Texture
- {
- VkDeviceMemory Memory;
- VkImage Image;
- VkImageView ImageView;
- VkDescriptorSet DescriptorSet;
- ImGui_ImplVulkan_Texture() { memset((void*)this, 0, sizeof(*this)); }
- };
- // Vulkan data
- struct ImGui_ImplVulkan_Data
- {
- ImGui_ImplVulkan_InitInfo VulkanInitInfo;
- VkDeviceSize BufferMemoryAlignment;
- VkDeviceSize NonCoherentAtomSize;
- VkPipelineCreateFlags PipelineCreateFlags;
- VkDescriptorSetLayout DescriptorSetLayout;
- VkPipelineLayout PipelineLayout;
- VkPipeline Pipeline;
- VkShaderModule ShaderModuleVert;
- VkShaderModule ShaderModuleFrag;
- VkDescriptorPool DescriptorPool;
- // Texture management
- VkSampler TexSampler;
- VkCommandPool TexCommandPool;
- VkCommandBuffer TexCommandBuffer;
- // Render buffers for main window
- ImGui_ImplVulkan_WindowRenderBuffers MainWindowRenderBuffers;
- ImGui_ImplVulkan_Data()
- {
- memset((void*)this, 0, sizeof(*this));
- BufferMemoryAlignment = 256;
- NonCoherentAtomSize = 64;
- }
- };
- //-----------------------------------------------------------------------------
- // SHADERS
- //-----------------------------------------------------------------------------
- // backends/vulkan/glsl_shader.vert, compiled with:
- // # glslangValidator -V -x -o glsl_shader.vert.u32 glsl_shader.vert
- /*
- #version 450 core
- layout(location = 0) in vec2 aPos;
- layout(location = 1) in vec2 aUV;
- layout(location = 2) in vec4 aColor;
- layout(push_constant) uniform uPushConstant { vec2 uScale; vec2 uTranslate; } pc;
- out gl_PerVertex { vec4 gl_Position; };
- layout(location = 0) out struct { vec4 Color; vec2 UV; } Out;
- void main()
- {
- Out.Color = aColor;
- Out.UV = aUV;
- gl_Position = vec4(aPos * pc.uScale + pc.uTranslate, 0, 1);
- }
- */
- static uint32_t __glsl_shader_vert_spv[] =
- {
- 0x07230203,0x00010000,0x00080001,0x0000002e,0x00000000,0x00020011,0x00000001,0x0006000b,
- 0x00000001,0x4c534c47,0x6474732e,0x3035342e,0x00000000,0x0003000e,0x00000000,0x00000001,
- 0x000a000f,0x00000000,0x00000004,0x6e69616d,0x00000000,0x0000000b,0x0000000f,0x00000015,
- 0x0000001b,0x0000001c,0x00030003,0x00000002,0x000001c2,0x00040005,0x00000004,0x6e69616d,
- 0x00000000,0x00030005,0x00000009,0x00000000,0x00050006,0x00000009,0x00000000,0x6f6c6f43,
- 0x00000072,0x00040006,0x00000009,0x00000001,0x00005655,0x00030005,0x0000000b,0x0074754f,
- 0x00040005,0x0000000f,0x6c6f4361,0x0000726f,0x00030005,0x00000015,0x00565561,0x00060005,
- 0x00000019,0x505f6c67,0x65567265,0x78657472,0x00000000,0x00060006,0x00000019,0x00000000,
- 0x505f6c67,0x7469736f,0x006e6f69,0x00030005,0x0000001b,0x00000000,0x00040005,0x0000001c,
- 0x736f5061,0x00000000,0x00060005,0x0000001e,0x73755075,0x6e6f4368,0x6e617473,0x00000074,
- 0x00050006,0x0000001e,0x00000000,0x61635375,0x0000656c,0x00060006,0x0000001e,0x00000001,
- 0x61725475,0x616c736e,0x00006574,0x00030005,0x00000020,0x00006370,0x00040047,0x0000000b,
- 0x0000001e,0x00000000,0x00040047,0x0000000f,0x0000001e,0x00000002,0x00040047,0x00000015,
- 0x0000001e,0x00000001,0x00050048,0x00000019,0x00000000,0x0000000b,0x00000000,0x00030047,
- 0x00000019,0x00000002,0x00040047,0x0000001c,0x0000001e,0x00000000,0x00050048,0x0000001e,
- 0x00000000,0x00000023,0x00000000,0x00050048,0x0000001e,0x00000001,0x00000023,0x00000008,
- 0x00030047,0x0000001e,0x00000002,0x00020013,0x00000002,0x00030021,0x00000003,0x00000002,
- 0x00030016,0x00000006,0x00000020,0x00040017,0x00000007,0x00000006,0x00000004,0x00040017,
- 0x00000008,0x00000006,0x00000002,0x0004001e,0x00000009,0x00000007,0x00000008,0x00040020,
- 0x0000000a,0x00000003,0x00000009,0x0004003b,0x0000000a,0x0000000b,0x00000003,0x00040015,
- 0x0000000c,0x00000020,0x00000001,0x0004002b,0x0000000c,0x0000000d,0x00000000,0x00040020,
- 0x0000000e,0x00000001,0x00000007,0x0004003b,0x0000000e,0x0000000f,0x00000001,0x00040020,
- 0x00000011,0x00000003,0x00000007,0x0004002b,0x0000000c,0x00000013,0x00000001,0x00040020,
- 0x00000014,0x00000001,0x00000008,0x0004003b,0x00000014,0x00000015,0x00000001,0x00040020,
- 0x00000017,0x00000003,0x00000008,0x0003001e,0x00000019,0x00000007,0x00040020,0x0000001a,
- 0x00000003,0x00000019,0x0004003b,0x0000001a,0x0000001b,0x00000003,0x0004003b,0x00000014,
- 0x0000001c,0x00000001,0x0004001e,0x0000001e,0x00000008,0x00000008,0x00040020,0x0000001f,
- 0x00000009,0x0000001e,0x0004003b,0x0000001f,0x00000020,0x00000009,0x00040020,0x00000021,
- 0x00000009,0x00000008,0x0004002b,0x00000006,0x00000028,0x00000000,0x0004002b,0x00000006,
- 0x00000029,0x3f800000,0x00050036,0x00000002,0x00000004,0x00000000,0x00000003,0x000200f8,
- 0x00000005,0x0004003d,0x00000007,0x00000010,0x0000000f,0x00050041,0x00000011,0x00000012,
- 0x0000000b,0x0000000d,0x0003003e,0x00000012,0x00000010,0x0004003d,0x00000008,0x00000016,
- 0x00000015,0x00050041,0x00000017,0x00000018,0x0000000b,0x00000013,0x0003003e,0x00000018,
- 0x00000016,0x0004003d,0x00000008,0x0000001d,0x0000001c,0x00050041,0x00000021,0x00000022,
- 0x00000020,0x0000000d,0x0004003d,0x00000008,0x00000023,0x00000022,0x00050085,0x00000008,
- 0x00000024,0x0000001d,0x00000023,0x00050041,0x00000021,0x00000025,0x00000020,0x00000013,
- 0x0004003d,0x00000008,0x00000026,0x00000025,0x00050081,0x00000008,0x00000027,0x00000024,
- 0x00000026,0x00050051,0x00000006,0x0000002a,0x00000027,0x00000000,0x00050051,0x00000006,
- 0x0000002b,0x00000027,0x00000001,0x00070050,0x00000007,0x0000002c,0x0000002a,0x0000002b,
- 0x00000028,0x00000029,0x00050041,0x00000011,0x0000002d,0x0000001b,0x0000000d,0x0003003e,
- 0x0000002d,0x0000002c,0x000100fd,0x00010038
- };
- // backends/vulkan/glsl_shader.frag, compiled with:
- // # glslangValidator -V -x -o glsl_shader.frag.u32 glsl_shader.frag
- /*
- #version 450 core
- layout(location = 0) out vec4 fColor;
- layout(set=0, binding=0) uniform sampler2D sTexture;
- layout(location = 0) in struct { vec4 Color; vec2 UV; } In;
- void main()
- {
- fColor = In.Color * texture(sTexture, In.UV.st);
- }
- */
- static uint32_t __glsl_shader_frag_spv[] =
- {
- 0x07230203,0x00010000,0x00080001,0x0000001e,0x00000000,0x00020011,0x00000001,0x0006000b,
- 0x00000001,0x4c534c47,0x6474732e,0x3035342e,0x00000000,0x0003000e,0x00000000,0x00000001,
- 0x0007000f,0x00000004,0x00000004,0x6e69616d,0x00000000,0x00000009,0x0000000d,0x00030010,
- 0x00000004,0x00000007,0x00030003,0x00000002,0x000001c2,0x00040005,0x00000004,0x6e69616d,
- 0x00000000,0x00040005,0x00000009,0x6c6f4366,0x0000726f,0x00030005,0x0000000b,0x00000000,
- 0x00050006,0x0000000b,0x00000000,0x6f6c6f43,0x00000072,0x00040006,0x0000000b,0x00000001,
- 0x00005655,0x00030005,0x0000000d,0x00006e49,0x00050005,0x00000016,0x78655473,0x65727574,
- 0x00000000,0x00040047,0x00000009,0x0000001e,0x00000000,0x00040047,0x0000000d,0x0000001e,
- 0x00000000,0x00040047,0x00000016,0x00000022,0x00000000,0x00040047,0x00000016,0x00000021,
- 0x00000000,0x00020013,0x00000002,0x00030021,0x00000003,0x00000002,0x00030016,0x00000006,
- 0x00000020,0x00040017,0x00000007,0x00000006,0x00000004,0x00040020,0x00000008,0x00000003,
- 0x00000007,0x0004003b,0x00000008,0x00000009,0x00000003,0x00040017,0x0000000a,0x00000006,
- 0x00000002,0x0004001e,0x0000000b,0x00000007,0x0000000a,0x00040020,0x0000000c,0x00000001,
- 0x0000000b,0x0004003b,0x0000000c,0x0000000d,0x00000001,0x00040015,0x0000000e,0x00000020,
- 0x00000001,0x0004002b,0x0000000e,0x0000000f,0x00000000,0x00040020,0x00000010,0x00000001,
- 0x00000007,0x00090019,0x00000013,0x00000006,0x00000001,0x00000000,0x00000000,0x00000000,
- 0x00000001,0x00000000,0x0003001b,0x00000014,0x00000013,0x00040020,0x00000015,0x00000000,
- 0x00000014,0x0004003b,0x00000015,0x00000016,0x00000000,0x0004002b,0x0000000e,0x00000018,
- 0x00000001,0x00040020,0x00000019,0x00000001,0x0000000a,0x00050036,0x00000002,0x00000004,
- 0x00000000,0x00000003,0x000200f8,0x00000005,0x00050041,0x00000010,0x00000011,0x0000000d,
- 0x0000000f,0x0004003d,0x00000007,0x00000012,0x00000011,0x0004003d,0x00000014,0x00000017,
- 0x00000016,0x00050041,0x00000019,0x0000001a,0x0000000d,0x00000018,0x0004003d,0x0000000a,
- 0x0000001b,0x0000001a,0x00050057,0x00000007,0x0000001c,0x00000017,0x0000001b,0x00050085,
- 0x00000007,0x0000001d,0x00000012,0x0000001c,0x0003003e,0x00000009,0x0000001d,0x000100fd,
- 0x00010038
- };
- //-----------------------------------------------------------------------------
- // FUNCTIONS
- //-----------------------------------------------------------------------------
- // Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
- // It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
- // FIXME: multi-context support is not tested and probably dysfunctional in this backend.
- static ImGui_ImplVulkan_Data* ImGui_ImplVulkan_GetBackendData()
- {
- return ImGui::GetCurrentContext() ? (ImGui_ImplVulkan_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
- }
- static uint32_t ImGui_ImplVulkan_MemoryType(VkMemoryPropertyFlags properties, uint32_t type_bits)
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- VkPhysicalDeviceMemoryProperties prop;
- vkGetPhysicalDeviceMemoryProperties(v->PhysicalDevice, &prop);
- for (uint32_t i = 0; i < prop.memoryTypeCount; i++)
- if ((prop.memoryTypes[i].propertyFlags & properties) == properties && type_bits & (1 << i))
- return i;
- return 0xFFFFFFFF; // Unable to find memoryType
- }
- static void check_vk_result(VkResult err)
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- if (!bd)
- return;
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- if (v->CheckVkResultFn)
- v->CheckVkResultFn(err);
- }
- // Same as IM_MEMALIGN(). 'alignment' must be a power of two.
- static inline VkDeviceSize AlignBufferSize(VkDeviceSize size, VkDeviceSize alignment)
- {
- return (size + alignment - 1) & ~(alignment - 1);
- }
- static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory, VkDeviceSize& buffer_size, VkDeviceSize new_size, VkBufferUsageFlagBits usage)
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- VkResult err;
- if (buffer != VK_NULL_HANDLE)
- vkDestroyBuffer(v->Device, buffer, v->Allocator);
- if (buffer_memory != VK_NULL_HANDLE)
- vkFreeMemory(v->Device, buffer_memory, v->Allocator);
- VkDeviceSize buffer_size_aligned = AlignBufferSize(IM_MAX(v->MinAllocationSize, new_size), bd->BufferMemoryAlignment);
- VkBufferCreateInfo buffer_info = {};
- buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
- buffer_info.size = buffer_size_aligned;
- buffer_info.usage = usage;
- buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
- err = vkCreateBuffer(v->Device, &buffer_info, v->Allocator, &buffer);
- check_vk_result(err);
- VkMemoryRequirements req;
- vkGetBufferMemoryRequirements(v->Device, buffer, &req);
- bd->BufferMemoryAlignment = (bd->BufferMemoryAlignment > req.alignment) ? bd->BufferMemoryAlignment : req.alignment;
- VkMemoryAllocateInfo alloc_info = {};
- alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
- alloc_info.allocationSize = req.size;
- alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
- err = vkAllocateMemory(v->Device, &alloc_info, v->Allocator, &buffer_memory);
- check_vk_result(err);
- err = vkBindBufferMemory(v->Device, buffer, buffer_memory, 0);
- check_vk_result(err);
- buffer_size = buffer_size_aligned;
- }
- static void ImGui_ImplVulkan_SetupRenderState(ImDrawData* draw_data, VkPipeline pipeline, VkCommandBuffer command_buffer, ImGui_ImplVulkan_FrameRenderBuffers* rb, int fb_width, int fb_height)
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- // Bind pipeline:
- {
- vkCmdBindPipeline(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
- }
- // Bind Vertex And Index Buffer:
- if (draw_data->TotalVtxCount > 0)
- {
- VkBuffer vertex_buffers[1] = { rb->VertexBuffer };
- VkDeviceSize vertex_offset[1] = { 0 };
- vkCmdBindVertexBuffers(command_buffer, 0, 1, vertex_buffers, vertex_offset);
- vkCmdBindIndexBuffer(command_buffer, rb->IndexBuffer, 0, sizeof(ImDrawIdx) == 2 ? VK_INDEX_TYPE_UINT16 : VK_INDEX_TYPE_UINT32);
- }
- // Setup viewport:
- {
- VkViewport viewport;
- viewport.x = 0;
- viewport.y = 0;
- viewport.width = (float)fb_width;
- viewport.height = (float)fb_height;
- viewport.minDepth = 0.0f;
- viewport.maxDepth = 1.0f;
- vkCmdSetViewport(command_buffer, 0, 1, &viewport);
- }
- // Setup scale and translation:
- // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
- {
- float scale[2];
- scale[0] = 2.0f / draw_data->DisplaySize.x;
- scale[1] = 2.0f / draw_data->DisplaySize.y;
- float translate[2];
- translate[0] = -1.0f - draw_data->DisplayPos.x * scale[0];
- translate[1] = -1.0f - draw_data->DisplayPos.y * scale[1];
- vkCmdPushConstants(command_buffer, bd->PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, sizeof(float) * 0, sizeof(float) * 2, scale);
- vkCmdPushConstants(command_buffer, bd->PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, sizeof(float) * 2, sizeof(float) * 2, translate);
- }
- }
- // Render function
- void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer, VkPipeline pipeline)
- {
- // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
- int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
- int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
- if (fb_width <= 0 || fb_height <= 0)
- return;
- // Catch up with texture updates. Most of the times, the list will have 1 element with an OK status, aka nothing to do.
- // (This almost always points to ImGui::GetPlatformIO().Textures[] but is part of ImDrawData to allow overriding or disabling texture updates).
- if (draw_data->Textures != nullptr)
- for (ImTextureData* tex : *draw_data->Textures)
- if (tex->Status != ImTextureStatus_OK)
- ImGui_ImplVulkan_UpdateTexture(tex);
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- if (pipeline == VK_NULL_HANDLE)
- pipeline = bd->Pipeline;
- // Allocate array to store enough vertex/index buffers
- ImGui_ImplVulkan_WindowRenderBuffers* wrb = &bd->MainWindowRenderBuffers;
- if (wrb->FrameRenderBuffers.Size == 0)
- {
- wrb->Index = 0;
- wrb->Count = v->ImageCount;
- wrb->FrameRenderBuffers.resize(wrb->Count);
- memset((void*)wrb->FrameRenderBuffers.Data, 0, wrb->FrameRenderBuffers.size_in_bytes());
- }
- IM_ASSERT(wrb->Count == v->ImageCount);
- wrb->Index = (wrb->Index + 1) % wrb->Count;
- ImGui_ImplVulkan_FrameRenderBuffers* rb = &wrb->FrameRenderBuffers[wrb->Index];
- if (draw_data->TotalVtxCount > 0)
- {
- // Create or resize the vertex/index buffers
- VkDeviceSize vertex_size = AlignBufferSize(draw_data->TotalVtxCount * sizeof(ImDrawVert), bd->BufferMemoryAlignment);
- VkDeviceSize index_size = AlignBufferSize(draw_data->TotalIdxCount * sizeof(ImDrawIdx), bd->BufferMemoryAlignment);
- if (rb->VertexBuffer == VK_NULL_HANDLE || rb->VertexBufferSize < vertex_size)
- CreateOrResizeBuffer(rb->VertexBuffer, rb->VertexBufferMemory, rb->VertexBufferSize, vertex_size, VK_BUFFER_USAGE_VERTEX_BUFFER_BIT);
- if (rb->IndexBuffer == VK_NULL_HANDLE || rb->IndexBufferSize < index_size)
- CreateOrResizeBuffer(rb->IndexBuffer, rb->IndexBufferMemory, rb->IndexBufferSize, index_size, VK_BUFFER_USAGE_INDEX_BUFFER_BIT);
- // Upload vertex/index data into a single contiguous GPU buffer
- ImDrawVert* vtx_dst = nullptr;
- ImDrawIdx* idx_dst = nullptr;
- VkResult err = vkMapMemory(v->Device, rb->VertexBufferMemory, 0, vertex_size, 0, (void**)&vtx_dst);
- check_vk_result(err);
- err = vkMapMemory(v->Device, rb->IndexBufferMemory, 0, index_size, 0, (void**)&idx_dst);
- check_vk_result(err);
- for (int n = 0; n < draw_data->CmdListsCount; n++)
- {
- const ImDrawList* draw_list = draw_data->CmdLists[n];
- memcpy(vtx_dst, draw_list->VtxBuffer.Data, draw_list->VtxBuffer.Size * sizeof(ImDrawVert));
- memcpy(idx_dst, draw_list->IdxBuffer.Data, draw_list->IdxBuffer.Size * sizeof(ImDrawIdx));
- vtx_dst += draw_list->VtxBuffer.Size;
- idx_dst += draw_list->IdxBuffer.Size;
- }
- VkMappedMemoryRange range[2] = {};
- range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
- range[0].memory = rb->VertexBufferMemory;
- range[0].size = VK_WHOLE_SIZE;
- range[1].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
- range[1].memory = rb->IndexBufferMemory;
- range[1].size = VK_WHOLE_SIZE;
- err = vkFlushMappedMemoryRanges(v->Device, 2, range);
- check_vk_result(err);
- vkUnmapMemory(v->Device, rb->VertexBufferMemory);
- vkUnmapMemory(v->Device, rb->IndexBufferMemory);
- }
- // Setup desired Vulkan state
- ImGui_ImplVulkan_SetupRenderState(draw_data, pipeline, command_buffer, rb, fb_width, fb_height);
- // Setup render state structure (for callbacks and custom texture bindings)
- ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
- ImGui_ImplVulkan_RenderState render_state;
- render_state.CommandBuffer = command_buffer;
- render_state.Pipeline = pipeline;
- render_state.PipelineLayout = bd->PipelineLayout;
- platform_io.Renderer_RenderState = &render_state;
- // Will project scissor/clipping rectangles into framebuffer space
- ImVec2 clip_off = draw_data->DisplayPos; // (0,0) unless using multi-viewports
- ImVec2 clip_scale = draw_data->FramebufferScale; // (1,1) unless using retina display which are often (2,2)
- // Render command lists
- // (Because we merged all buffers into a single one, we maintain our own offset into them)
- int global_vtx_offset = 0;
- int global_idx_offset = 0;
- for (int n = 0; n < draw_data->CmdListsCount; n++)
- {
- const ImDrawList* draw_list = draw_data->CmdLists[n];
- for (int cmd_i = 0; cmd_i < draw_list->CmdBuffer.Size; cmd_i++)
- {
- const ImDrawCmd* pcmd = &draw_list->CmdBuffer[cmd_i];
- if (pcmd->UserCallback != nullptr)
- {
- // User callback, registered via ImDrawList::AddCallback()
- // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
- if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
- ImGui_ImplVulkan_SetupRenderState(draw_data, pipeline, command_buffer, rb, fb_width, fb_height);
- else
- pcmd->UserCallback(draw_list, pcmd);
- }
- else
- {
- // Project scissor/clipping rectangles into framebuffer space
- ImVec2 clip_min((pcmd->ClipRect.x - clip_off.x) * clip_scale.x, (pcmd->ClipRect.y - clip_off.y) * clip_scale.y);
- ImVec2 clip_max((pcmd->ClipRect.z - clip_off.x) * clip_scale.x, (pcmd->ClipRect.w - clip_off.y) * clip_scale.y);
- // Clamp to viewport as vkCmdSetScissor() won't accept values that are off bounds
- if (clip_min.x < 0.0f) { clip_min.x = 0.0f; }
- if (clip_min.y < 0.0f) { clip_min.y = 0.0f; }
- if (clip_max.x > fb_width) { clip_max.x = (float)fb_width; }
- if (clip_max.y > fb_height) { clip_max.y = (float)fb_height; }
- if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
- continue;
- // Apply scissor/clipping rectangle
- VkRect2D scissor;
- scissor.offset.x = (int32_t)(clip_min.x);
- scissor.offset.y = (int32_t)(clip_min.y);
- scissor.extent.width = (uint32_t)(clip_max.x - clip_min.x);
- scissor.extent.height = (uint32_t)(clip_max.y - clip_min.y);
- vkCmdSetScissor(command_buffer, 0, 1, &scissor);
- // Bind DescriptorSet with font or user texture
- VkDescriptorSet desc_set = (VkDescriptorSet)pcmd->GetTexID();
- vkCmdBindDescriptorSets(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, bd->PipelineLayout, 0, 1, &desc_set, 0, nullptr);
- // Draw
- vkCmdDrawIndexed(command_buffer, pcmd->ElemCount, 1, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset, 0);
- }
- }
- global_idx_offset += draw_list->IdxBuffer.Size;
- global_vtx_offset += draw_list->VtxBuffer.Size;
- }
- platform_io.Renderer_RenderState = nullptr;
- // Note: at this point both vkCmdSetViewport() and vkCmdSetScissor() have been called.
- // Our last values will leak into user/application rendering IF:
- // - Your app uses a pipeline with VK_DYNAMIC_STATE_VIEWPORT or VK_DYNAMIC_STATE_SCISSOR dynamic state
- // - And you forgot to call vkCmdSetViewport() and vkCmdSetScissor() yourself to explicitly set that state.
- // If you use VK_DYNAMIC_STATE_VIEWPORT or VK_DYNAMIC_STATE_SCISSOR you are responsible for setting the values before rendering.
- // In theory we should aim to backup/restore those values but I am not sure this is possible.
- // We perform a call to vkCmdSetScissor() to set back a full viewport which is likely to fix things for 99% users but technically this is not perfect. (See github #4644)
- VkRect2D scissor = { { 0, 0 }, { (uint32_t)fb_width, (uint32_t)fb_height } };
- vkCmdSetScissor(command_buffer, 0, 1, &scissor);
- }
- static void ImGui_ImplVulkan_DestroyTexture(ImTextureData* tex)
- {
- ImGui_ImplVulkan_Texture* backend_tex = (ImGui_ImplVulkan_Texture*)tex->BackendUserData;
- if (backend_tex == nullptr)
- return;
- IM_ASSERT(backend_tex->DescriptorSet == (VkDescriptorSet)tex->TexID);
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- ImGui_ImplVulkan_RemoveTexture(backend_tex->DescriptorSet);
- vkDestroyImageView(v->Device, backend_tex->ImageView, v->Allocator);
- vkDestroyImage(v->Device, backend_tex->Image, v->Allocator);
- vkFreeMemory(v->Device, backend_tex->Memory, v->Allocator);
- IM_DELETE(backend_tex);
- // Clear identifiers and mark as destroyed (in order to allow e.g. calling InvalidateDeviceObjects while running)
- tex->SetTexID(ImTextureID_Invalid);
- tex->SetStatus(ImTextureStatus_Destroyed);
- tex->BackendUserData = nullptr;
- }
- void ImGui_ImplVulkan_UpdateTexture(ImTextureData* tex)
- {
- if (tex->Status == ImTextureStatus_OK)
- return;
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- VkResult err;
- if (tex->Status == ImTextureStatus_WantCreate)
- {
- // Create and upload new texture to graphics system
- //IMGUI_DEBUG_LOG("UpdateTexture #%03d: WantCreate %dx%d\n", tex->UniqueID, tex->Width, tex->Height);
- IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr);
- IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);
- ImGui_ImplVulkan_Texture* backend_tex = IM_NEW(ImGui_ImplVulkan_Texture)();
- // Create the Image:
- {
- VkImageCreateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
- info.imageType = VK_IMAGE_TYPE_2D;
- info.format = VK_FORMAT_R8G8B8A8_UNORM;
- info.extent.width = tex->Width;
- info.extent.height = tex->Height;
- info.extent.depth = 1;
- info.mipLevels = 1;
- info.arrayLayers = 1;
- info.samples = VK_SAMPLE_COUNT_1_BIT;
- info.tiling = VK_IMAGE_TILING_OPTIMAL;
- info.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
- info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
- info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
- err = vkCreateImage(v->Device, &info, v->Allocator, &backend_tex->Image);
- check_vk_result(err);
- VkMemoryRequirements req;
- vkGetImageMemoryRequirements(v->Device, backend_tex->Image, &req);
- VkMemoryAllocateInfo alloc_info = {};
- alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
- alloc_info.allocationSize = IM_MAX(v->MinAllocationSize, req.size);
- alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, req.memoryTypeBits);
- err = vkAllocateMemory(v->Device, &alloc_info, v->Allocator, &backend_tex->Memory);
- check_vk_result(err);
- err = vkBindImageMemory(v->Device, backend_tex->Image, backend_tex->Memory, 0);
- check_vk_result(err);
- }
- // Create the Image View:
- {
- VkImageViewCreateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
- info.image = backend_tex->Image;
- info.viewType = VK_IMAGE_VIEW_TYPE_2D;
- info.format = VK_FORMAT_R8G8B8A8_UNORM;
- info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
- info.subresourceRange.levelCount = 1;
- info.subresourceRange.layerCount = 1;
- err = vkCreateImageView(v->Device, &info, v->Allocator, &backend_tex->ImageView);
- check_vk_result(err);
- }
- // Create the Descriptor Set
- backend_tex->DescriptorSet = ImGui_ImplVulkan_AddTexture(bd->TexSampler, backend_tex->ImageView, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
- // Store identifiers
- tex->SetTexID((ImTextureID)backend_tex->DescriptorSet);
- tex->BackendUserData = backend_tex;
- }
- if (tex->Status == ImTextureStatus_WantCreate || tex->Status == ImTextureStatus_WantUpdates)
- {
- ImGui_ImplVulkan_Texture* backend_tex = (ImGui_ImplVulkan_Texture*)tex->BackendUserData;
- // Update full texture or selected blocks. We only ever write to textures regions which have never been used before!
- // This backend choose to use tex->UpdateRect but you can use tex->Updates[] to upload individual regions.
- // We could use the smaller rect on _WantCreate but using the full rect allows us to clear the texture.
- const int upload_x = (tex->Status == ImTextureStatus_WantCreate) ? 0 : tex->UpdateRect.x;
- const int upload_y = (tex->Status == ImTextureStatus_WantCreate) ? 0 : tex->UpdateRect.y;
- const int upload_w = (tex->Status == ImTextureStatus_WantCreate) ? tex->Width : tex->UpdateRect.w;
- const int upload_h = (tex->Status == ImTextureStatus_WantCreate) ? tex->Height : tex->UpdateRect.h;
- // Create the Upload Buffer:
- VkDeviceMemory upload_buffer_memory;
- VkBuffer upload_buffer;
- VkDeviceSize upload_pitch = upload_w * tex->BytesPerPixel;
- VkDeviceSize upload_size = AlignBufferSize(upload_h * upload_pitch, bd->NonCoherentAtomSize);
- {
- VkBufferCreateInfo buffer_info = {};
- buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
- buffer_info.size = upload_size;
- buffer_info.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
- buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
- err = vkCreateBuffer(v->Device, &buffer_info, v->Allocator, &upload_buffer);
- check_vk_result(err);
- VkMemoryRequirements req;
- vkGetBufferMemoryRequirements(v->Device, upload_buffer, &req);
- bd->BufferMemoryAlignment = (bd->BufferMemoryAlignment > req.alignment) ? bd->BufferMemoryAlignment : req.alignment;
- VkMemoryAllocateInfo alloc_info = {};
- alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
- alloc_info.allocationSize = IM_MAX(v->MinAllocationSize, req.size);
- alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
- err = vkAllocateMemory(v->Device, &alloc_info, v->Allocator, &upload_buffer_memory);
- check_vk_result(err);
- err = vkBindBufferMemory(v->Device, upload_buffer, upload_buffer_memory, 0);
- check_vk_result(err);
- }
- // Upload to Buffer:
- {
- char* map = nullptr;
- err = vkMapMemory(v->Device, upload_buffer_memory, 0, upload_size, 0, (void**)(&map));
- check_vk_result(err);
- for (int y = 0; y < upload_h; y++)
- memcpy(map + upload_pitch * y, tex->GetPixelsAt(upload_x, upload_y + y), (size_t)upload_pitch);
- VkMappedMemoryRange range[1] = {};
- range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
- range[0].memory = upload_buffer_memory;
- range[0].size = upload_size;
- err = vkFlushMappedMemoryRanges(v->Device, 1, range);
- check_vk_result(err);
- vkUnmapMemory(v->Device, upload_buffer_memory);
- }
- // Start command buffer
- {
- err = vkResetCommandPool(v->Device, bd->TexCommandPool, 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(bd->TexCommandBuffer, &begin_info);
- check_vk_result(err);
- }
- // Copy to Image:
- {
- VkBufferMemoryBarrier upload_barrier[1] = {};
- upload_barrier[0].sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER;
- upload_barrier[0].srcAccessMask = VK_ACCESS_HOST_WRITE_BIT;
- upload_barrier[0].dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
- upload_barrier[0].srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
- upload_barrier[0].dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
- upload_barrier[0].buffer = upload_buffer;
- upload_barrier[0].offset = 0;
- upload_barrier[0].size = upload_size;
- VkImageMemoryBarrier copy_barrier[1] = {};
- copy_barrier[0].sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
- copy_barrier[0].dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
- copy_barrier[0].oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
- copy_barrier[0].newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
- copy_barrier[0].srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
- copy_barrier[0].dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
- copy_barrier[0].image = backend_tex->Image;
- copy_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
- copy_barrier[0].subresourceRange.levelCount = 1;
- copy_barrier[0].subresourceRange.layerCount = 1;
- vkCmdPipelineBarrier(bd->TexCommandBuffer, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT | VK_PIPELINE_STAGE_HOST_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 1, upload_barrier, 1, copy_barrier);
- VkBufferImageCopy region = {};
- region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
- region.imageSubresource.layerCount = 1;
- region.imageExtent.width = upload_w;
- region.imageExtent.height = upload_h;
- region.imageExtent.depth = 1;
- region.imageOffset.x = upload_x;
- region.imageOffset.y = upload_y;
- vkCmdCopyBufferToImage(bd->TexCommandBuffer, upload_buffer, backend_tex->Image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, ®ion);
- VkImageMemoryBarrier use_barrier[1] = {};
- use_barrier[0].sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
- use_barrier[0].srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
- use_barrier[0].dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
- use_barrier[0].oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
- use_barrier[0].newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
- use_barrier[0].srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
- use_barrier[0].dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
- use_barrier[0].image = backend_tex->Image;
- use_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
- use_barrier[0].subresourceRange.levelCount = 1;
- use_barrier[0].subresourceRange.layerCount = 1;
- vkCmdPipelineBarrier(bd->TexCommandBuffer, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, use_barrier);
- }
- // End command buffer
- {
- VkSubmitInfo end_info = {};
- end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
- end_info.commandBufferCount = 1;
- end_info.pCommandBuffers = &bd->TexCommandBuffer;
- err = vkEndCommandBuffer(bd->TexCommandBuffer);
- check_vk_result(err);
- err = vkQueueSubmit(v->Queue, 1, &end_info, VK_NULL_HANDLE);
- check_vk_result(err);
- }
- err = vkQueueWaitIdle(v->Queue); // FIXME-OPT: Suboptimal!
- check_vk_result(err);
- vkDestroyBuffer(v->Device, upload_buffer, v->Allocator);
- vkFreeMemory(v->Device, upload_buffer_memory, v->Allocator);
- tex->SetStatus(ImTextureStatus_OK);
- }
- if (tex->Status == ImTextureStatus_WantDestroy && tex->UnusedFrames >= (int)bd->VulkanInitInfo.ImageCount)
- ImGui_ImplVulkan_DestroyTexture(tex);
- }
- static void ImGui_ImplVulkan_CreateShaderModules(VkDevice device, const VkAllocationCallbacks* allocator)
- {
- // Create the shader modules
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- if (bd->ShaderModuleVert == VK_NULL_HANDLE)
- {
- VkShaderModuleCreateInfo vert_info = {};
- vert_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
- vert_info.codeSize = sizeof(__glsl_shader_vert_spv);
- vert_info.pCode = (uint32_t*)__glsl_shader_vert_spv;
- VkResult err = vkCreateShaderModule(device, &vert_info, allocator, &bd->ShaderModuleVert);
- check_vk_result(err);
- }
- if (bd->ShaderModuleFrag == VK_NULL_HANDLE)
- {
- VkShaderModuleCreateInfo frag_info = {};
- frag_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
- frag_info.codeSize = sizeof(__glsl_shader_frag_spv);
- frag_info.pCode = (uint32_t*)__glsl_shader_frag_spv;
- VkResult err = vkCreateShaderModule(device, &frag_info, allocator, &bd->ShaderModuleFrag);
- check_vk_result(err);
- }
- }
- static void ImGui_ImplVulkan_CreatePipeline(VkDevice device, const VkAllocationCallbacks* allocator, VkPipelineCache pipelineCache, VkRenderPass renderPass, VkSampleCountFlagBits MSAASamples, VkPipeline* pipeline, uint32_t subpass)
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- ImGui_ImplVulkan_CreateShaderModules(device, allocator);
- VkPipelineShaderStageCreateInfo stage[2] = {};
- stage[0].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
- stage[0].stage = VK_SHADER_STAGE_VERTEX_BIT;
- stage[0].module = bd->ShaderModuleVert;
- stage[0].pName = "main";
- stage[1].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
- stage[1].stage = VK_SHADER_STAGE_FRAGMENT_BIT;
- stage[1].module = bd->ShaderModuleFrag;
- stage[1].pName = "main";
- VkVertexInputBindingDescription binding_desc[1] = {};
- binding_desc[0].stride = sizeof(ImDrawVert);
- binding_desc[0].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
- VkVertexInputAttributeDescription attribute_desc[3] = {};
- attribute_desc[0].location = 0;
- attribute_desc[0].binding = binding_desc[0].binding;
- attribute_desc[0].format = VK_FORMAT_R32G32_SFLOAT;
- attribute_desc[0].offset = offsetof(ImDrawVert, pos);
- attribute_desc[1].location = 1;
- attribute_desc[1].binding = binding_desc[0].binding;
- attribute_desc[1].format = VK_FORMAT_R32G32_SFLOAT;
- attribute_desc[1].offset = offsetof(ImDrawVert, uv);
- attribute_desc[2].location = 2;
- attribute_desc[2].binding = binding_desc[0].binding;
- attribute_desc[2].format = VK_FORMAT_R8G8B8A8_UNORM;
- attribute_desc[2].offset = offsetof(ImDrawVert, col);
- VkPipelineVertexInputStateCreateInfo vertex_info = {};
- vertex_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
- vertex_info.vertexBindingDescriptionCount = 1;
- vertex_info.pVertexBindingDescriptions = binding_desc;
- vertex_info.vertexAttributeDescriptionCount = 3;
- vertex_info.pVertexAttributeDescriptions = attribute_desc;
- VkPipelineInputAssemblyStateCreateInfo ia_info = {};
- ia_info.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
- ia_info.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
- VkPipelineViewportStateCreateInfo viewport_info = {};
- viewport_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
- viewport_info.viewportCount = 1;
- viewport_info.scissorCount = 1;
- VkPipelineRasterizationStateCreateInfo raster_info = {};
- raster_info.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
- raster_info.polygonMode = VK_POLYGON_MODE_FILL;
- raster_info.cullMode = VK_CULL_MODE_NONE;
- raster_info.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
- raster_info.lineWidth = 1.0f;
- VkPipelineMultisampleStateCreateInfo ms_info = {};
- ms_info.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
- ms_info.rasterizationSamples = (MSAASamples != 0) ? MSAASamples : VK_SAMPLE_COUNT_1_BIT;
- VkPipelineColorBlendAttachmentState color_attachment[1] = {};
- color_attachment[0].blendEnable = VK_TRUE;
- color_attachment[0].srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
- color_attachment[0].dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
- color_attachment[0].colorBlendOp = VK_BLEND_OP_ADD;
- color_attachment[0].srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
- color_attachment[0].dstAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
- color_attachment[0].alphaBlendOp = VK_BLEND_OP_ADD;
- color_attachment[0].colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
- VkPipelineDepthStencilStateCreateInfo depth_info = {};
- depth_info.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
- VkPipelineColorBlendStateCreateInfo blend_info = {};
- blend_info.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
- blend_info.attachmentCount = 1;
- blend_info.pAttachments = color_attachment;
- VkDynamicState dynamic_states[2] = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
- VkPipelineDynamicStateCreateInfo dynamic_state = {};
- dynamic_state.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
- dynamic_state.dynamicStateCount = (uint32_t)IM_ARRAYSIZE(dynamic_states);
- dynamic_state.pDynamicStates = dynamic_states;
- VkGraphicsPipelineCreateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
- info.flags = bd->PipelineCreateFlags;
- info.stageCount = 2;
- info.pStages = stage;
- info.pVertexInputState = &vertex_info;
- info.pInputAssemblyState = &ia_info;
- info.pViewportState = &viewport_info;
- info.pRasterizationState = &raster_info;
- info.pMultisampleState = &ms_info;
- info.pDepthStencilState = &depth_info;
- info.pColorBlendState = &blend_info;
- info.pDynamicState = &dynamic_state;
- info.layout = bd->PipelineLayout;
- info.renderPass = renderPass;
- info.subpass = subpass;
- #ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
- if (bd->VulkanInitInfo.UseDynamicRendering)
- {
- IM_ASSERT(bd->VulkanInitInfo.PipelineRenderingCreateInfo.sType == VK_STRUCTURE_TYPE_PIPELINE_RENDERING_CREATE_INFO_KHR && "PipelineRenderingCreateInfo sType must be VK_STRUCTURE_TYPE_PIPELINE_RENDERING_CREATE_INFO_KHR");
- IM_ASSERT(bd->VulkanInitInfo.PipelineRenderingCreateInfo.pNext == nullptr && "PipelineRenderingCreateInfo pNext must be nullptr");
- info.pNext = &bd->VulkanInitInfo.PipelineRenderingCreateInfo;
- info.renderPass = VK_NULL_HANDLE; // Just make sure it's actually nullptr.
- }
- #endif
- VkResult err = vkCreateGraphicsPipelines(device, pipelineCache, 1, &info, allocator, pipeline);
- check_vk_result(err);
- }
- bool ImGui_ImplVulkan_CreateDeviceObjects()
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- VkResult err;
- if (!bd->TexSampler)
- {
- // Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling.
- VkSamplerCreateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
- info.magFilter = VK_FILTER_LINEAR;
- info.minFilter = VK_FILTER_LINEAR;
- info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
- info.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
- info.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
- info.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
- info.minLod = -1000;
- info.maxLod = 1000;
- info.maxAnisotropy = 1.0f;
- err = vkCreateSampler(v->Device, &info, v->Allocator, &bd->TexSampler);
- check_vk_result(err);
- }
- if (!bd->DescriptorSetLayout)
- {
- VkDescriptorSetLayoutBinding binding[1] = {};
- binding[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
- binding[0].descriptorCount = 1;
- binding[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
- VkDescriptorSetLayoutCreateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
- info.bindingCount = 1;
- info.pBindings = binding;
- err = vkCreateDescriptorSetLayout(v->Device, &info, v->Allocator, &bd->DescriptorSetLayout);
- check_vk_result(err);
- }
- if (v->DescriptorPoolSize != 0)
- {
- IM_ASSERT(v->DescriptorPoolSize >= IMGUI_IMPL_VULKAN_MINIMUM_IMAGE_SAMPLER_POOL_SIZE);
- VkDescriptorPoolSize pool_size = { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, v->DescriptorPoolSize };
- 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 = v->DescriptorPoolSize;
- pool_info.poolSizeCount = 1;
- pool_info.pPoolSizes = &pool_size;
- err = vkCreateDescriptorPool(v->Device, &pool_info, v->Allocator, &bd->DescriptorPool);
- check_vk_result(err);
- }
- if (!bd->PipelineLayout)
- {
- // Constants: we are using 'vec2 offset' and 'vec2 scale' instead of a full 3d projection matrix
- VkPushConstantRange push_constants[1] = {};
- push_constants[0].stageFlags = VK_SHADER_STAGE_VERTEX_BIT;
- push_constants[0].offset = sizeof(float) * 0;
- push_constants[0].size = sizeof(float) * 4;
- VkDescriptorSetLayout set_layout[1] = { bd->DescriptorSetLayout };
- VkPipelineLayoutCreateInfo layout_info = {};
- layout_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
- layout_info.setLayoutCount = 1;
- layout_info.pSetLayouts = set_layout;
- layout_info.pushConstantRangeCount = 1;
- layout_info.pPushConstantRanges = push_constants;
- err = vkCreatePipelineLayout(v->Device, &layout_info, v->Allocator, &bd->PipelineLayout);
- check_vk_result(err);
- }
- ImGui_ImplVulkan_CreatePipeline(v->Device, v->Allocator, v->PipelineCache, v->RenderPass, v->MSAASamples, &bd->Pipeline, v->Subpass);
- // Create command pool/buffer for texture upload
- if (!bd->TexCommandPool)
- {
- VkCommandPoolCreateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
- info.flags = 0;
- info.queueFamilyIndex = v->QueueFamily;
- err = vkCreateCommandPool(v->Device, &info, v->Allocator, &bd->TexCommandPool);
- check_vk_result(err);
- }
- if (!bd->TexCommandBuffer)
- {
- VkCommandBufferAllocateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
- info.commandPool = bd->TexCommandPool;
- info.commandBufferCount = 1;
- err = vkAllocateCommandBuffers(v->Device, &info, &bd->TexCommandBuffer);
- check_vk_result(err);
- }
- return true;
- }
- void ImGui_ImplVulkan_DestroyDeviceObjects()
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- ImGui_ImplVulkan_DestroyWindowRenderBuffers(v->Device, &bd->MainWindowRenderBuffers, v->Allocator);
- // Destroy all textures
- for (ImTextureData* tex : ImGui::GetPlatformIO().Textures)
- if (tex->RefCount == 1)
- ImGui_ImplVulkan_DestroyTexture(tex);
- if (bd->TexCommandBuffer) { vkFreeCommandBuffers(v->Device, bd->TexCommandPool, 1, &bd->TexCommandBuffer); bd->TexCommandBuffer = VK_NULL_HANDLE; }
- if (bd->TexCommandPool) { vkDestroyCommandPool(v->Device, bd->TexCommandPool, v->Allocator); bd->TexCommandPool = VK_NULL_HANDLE; }
- if (bd->TexSampler) { vkDestroySampler(v->Device, bd->TexSampler, v->Allocator); bd->TexSampler = VK_NULL_HANDLE; }
- if (bd->ShaderModuleVert) { vkDestroyShaderModule(v->Device, bd->ShaderModuleVert, v->Allocator); bd->ShaderModuleVert = VK_NULL_HANDLE; }
- if (bd->ShaderModuleFrag) { vkDestroyShaderModule(v->Device, bd->ShaderModuleFrag, v->Allocator); bd->ShaderModuleFrag = VK_NULL_HANDLE; }
- if (bd->DescriptorSetLayout) { vkDestroyDescriptorSetLayout(v->Device, bd->DescriptorSetLayout, v->Allocator); bd->DescriptorSetLayout = VK_NULL_HANDLE; }
- if (bd->PipelineLayout) { vkDestroyPipelineLayout(v->Device, bd->PipelineLayout, v->Allocator); bd->PipelineLayout = VK_NULL_HANDLE; }
- if (bd->Pipeline) { vkDestroyPipeline(v->Device, bd->Pipeline, v->Allocator); bd->Pipeline = VK_NULL_HANDLE; }
- if (bd->DescriptorPool) { vkDestroyDescriptorPool(v->Device, bd->DescriptorPool, v->Allocator); bd->DescriptorPool = VK_NULL_HANDLE; }
- }
- #ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
- static void ImGui_ImplVulkan_LoadDynamicRenderingFunctions(uint32_t api_version, PFN_vkVoidFunction(*loader_func)(const char* function_name, void* user_data), void* user_data)
- {
- IM_UNUSED(api_version);
- // Manually load those two (see #5446, #8326, #8365, #8600)
- // - Try loading core (non-KHR) versions first (this will work for Vulkan 1.3+ and the device supports dynamic rendering)
- ImGuiImplVulkanFuncs_vkCmdBeginRenderingKHR = reinterpret_cast<PFN_vkCmdBeginRenderingKHR>(loader_func("vkCmdBeginRendering", user_data));
- ImGuiImplVulkanFuncs_vkCmdEndRenderingKHR = reinterpret_cast<PFN_vkCmdEndRenderingKHR>(loader_func("vkCmdEndRendering", user_data));
- // - Fallback to KHR versions if core not available (this will work if KHR extension is available and enabled and also the device supports dynamic rendering)
- if (ImGuiImplVulkanFuncs_vkCmdBeginRenderingKHR == nullptr || ImGuiImplVulkanFuncs_vkCmdEndRenderingKHR == nullptr)
- {
- ImGuiImplVulkanFuncs_vkCmdBeginRenderingKHR = reinterpret_cast<PFN_vkCmdBeginRenderingKHR>(loader_func("vkCmdBeginRenderingKHR", user_data));
- ImGuiImplVulkanFuncs_vkCmdEndRenderingKHR = reinterpret_cast<PFN_vkCmdEndRenderingKHR>(loader_func("vkCmdEndRenderingKHR", user_data));
- }
- }
- #endif
- // If unspecified by user, assume that ApiVersion == HeaderVersion
- // We don't care about other versions than 1.3 for our checks, so don't need to make this exhaustive (e.g. with all #ifdef VK_VERSION_1_X checks)
- static uint32_t ImGui_ImplVulkan_GetDefaultApiVersion()
- {
- #ifdef VK_HEADER_VERSION_COMPLETE
- return VK_HEADER_VERSION_COMPLETE;
- #else
- return VK_API_VERSION_1_0;
- #endif
- }
- bool ImGui_ImplVulkan_LoadFunctions(uint32_t api_version, PFN_vkVoidFunction(*loader_func)(const char* function_name, void* user_data), void* user_data)
- {
- // Load function pointers
- // You can use the default Vulkan loader using:
- // ImGui_ImplVulkan_LoadFunctions(VK_API_VERSION_1_3, [](const char* function_name, void*) { return vkGetInstanceProcAddr(your_vk_isntance, function_name); });
- // But this would be roughly equivalent to not setting VK_NO_PROTOTYPES.
- if (api_version == 0)
- api_version = ImGui_ImplVulkan_GetDefaultApiVersion();
- #ifdef IMGUI_IMPL_VULKAN_USE_LOADER
- #define IMGUI_VULKAN_FUNC_LOAD(func) \
- func = reinterpret_cast<decltype(func)>(loader_func(#func, user_data)); \
- if (func == nullptr) \
- return false;
- IMGUI_VULKAN_FUNC_MAP(IMGUI_VULKAN_FUNC_LOAD)
- #undef IMGUI_VULKAN_FUNC_LOAD
- #ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
- ImGui_ImplVulkan_LoadDynamicRenderingFunctions(api_version, loader_func, user_data);
- #endif
- #else
- IM_UNUSED(loader_func);
- IM_UNUSED(user_data);
- #endif
- g_FunctionsLoaded = true;
- return true;
- }
- bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info)
- {
- IM_ASSERT(g_FunctionsLoaded && "Need to call ImGui_ImplVulkan_LoadFunctions() if IMGUI_IMPL_VULKAN_NO_PROTOTYPES or VK_NO_PROTOTYPES are set!");
- if (info->ApiVersion == 0)
- info->ApiVersion = ImGui_ImplVulkan_GetDefaultApiVersion();
- if (info->UseDynamicRendering)
- {
- #ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
- #ifndef IMGUI_IMPL_VULKAN_USE_LOADER
- ImGui_ImplVulkan_LoadDynamicRenderingFunctions(info->ApiVersion, [](const char* function_name, void* user_data) { return vkGetDeviceProcAddr((VkDevice)user_data, function_name); }, (void*)info->Device);
- #endif
- IM_ASSERT(ImGuiImplVulkanFuncs_vkCmdBeginRenderingKHR != nullptr);
- IM_ASSERT(ImGuiImplVulkanFuncs_vkCmdEndRenderingKHR != nullptr);
- #else
- IM_ASSERT(0 && "Can't use dynamic rendering when neither VK_VERSION_1_3 or VK_KHR_dynamic_rendering is defined.");
- #endif
- }
- ImGuiIO& io = ImGui::GetIO();
- IMGUI_CHECKVERSION();
- IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
- // Setup backend capabilities flags
- ImGui_ImplVulkan_Data* bd = IM_NEW(ImGui_ImplVulkan_Data)();
- io.BackendRendererUserData = (void*)bd;
- io.BackendRendererName = "imgui_impl_vulkan";
- io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
- io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures; // We can honor ImGuiPlatformIO::Textures[] requests during render.
- IM_ASSERT(info->Instance != VK_NULL_HANDLE);
- IM_ASSERT(info->PhysicalDevice != VK_NULL_HANDLE);
- IM_ASSERT(info->Device != VK_NULL_HANDLE);
- IM_ASSERT(info->Queue != VK_NULL_HANDLE);
- if (info->DescriptorPool != VK_NULL_HANDLE) // Either DescriptorPool or DescriptorPoolSize must be set, not both!
- IM_ASSERT(info->DescriptorPoolSize == 0);
- else
- IM_ASSERT(info->DescriptorPoolSize > 0);
- IM_ASSERT(info->MinImageCount >= 2);
- IM_ASSERT(info->ImageCount >= info->MinImageCount);
- if (info->UseDynamicRendering == false)
- IM_ASSERT(info->RenderPass != VK_NULL_HANDLE);
- bd->VulkanInitInfo = *info;
- VkPhysicalDeviceProperties properties;
- vkGetPhysicalDeviceProperties(info->PhysicalDevice, &properties);
- bd->NonCoherentAtomSize = properties.limits.nonCoherentAtomSize;
- #ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- if (v->PipelineRenderingCreateInfo.pColorAttachmentFormats != NULL)
- {
- // Deep copy buffer to reduce error-rate for end user (#8282)
- VkFormat* formats_copy = (VkFormat*)IM_ALLOC(sizeof(VkFormat) * v->PipelineRenderingCreateInfo.colorAttachmentCount);
- memcpy(formats_copy, v->PipelineRenderingCreateInfo.pColorAttachmentFormats, sizeof(VkFormat) * v->PipelineRenderingCreateInfo.colorAttachmentCount);
- v->PipelineRenderingCreateInfo.pColorAttachmentFormats = formats_copy;
- }
- #endif
- if (!ImGui_ImplVulkan_CreateDeviceObjects())
- IM_ASSERT(0 && "ImGui_ImplVulkan_CreateDeviceObjects() failed!"); // <- Can't be hit yet.
- return true;
- }
- void ImGui_ImplVulkan_Shutdown()
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
- ImGuiIO& io = ImGui::GetIO();
- ImGui_ImplVulkan_DestroyDeviceObjects();
- #ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
- IM_FREE((void*)const_cast<VkFormat*>(bd->VulkanInitInfo.PipelineRenderingCreateInfo.pColorAttachmentFormats));
- #endif
- io.BackendRendererName = nullptr;
- io.BackendRendererUserData = nullptr;
- io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
- IM_DELETE(bd);
- }
- void ImGui_ImplVulkan_NewFrame()
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplVulkan_Init()?");
- IM_UNUSED(bd);
- }
- void ImGui_ImplVulkan_SetMinImageCount(uint32_t min_image_count)
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- IM_ASSERT(min_image_count >= 2);
- if (bd->VulkanInitInfo.MinImageCount == min_image_count)
- return;
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- VkResult err = vkDeviceWaitIdle(v->Device);
- check_vk_result(err);
- ImGui_ImplVulkan_DestroyWindowRenderBuffers(v->Device, &bd->MainWindowRenderBuffers, v->Allocator);
- bd->VulkanInitInfo.MinImageCount = min_image_count;
- }
- // Register a texture by creating a descriptor
- // FIXME: This is experimental in the sense that we are unsure how to best design/tackle this problem, please post to https://github.com/ocornut/imgui/pull/914 if you have suggestions.
- VkDescriptorSet ImGui_ImplVulkan_AddTexture(VkSampler sampler, VkImageView image_view, VkImageLayout image_layout)
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- VkDescriptorPool pool = bd->DescriptorPool ? bd->DescriptorPool : v->DescriptorPool;
- // Create Descriptor Set:
- VkDescriptorSet descriptor_set;
- {
- VkDescriptorSetAllocateInfo alloc_info = {};
- alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
- alloc_info.descriptorPool = pool;
- alloc_info.descriptorSetCount = 1;
- alloc_info.pSetLayouts = &bd->DescriptorSetLayout;
- VkResult err = vkAllocateDescriptorSets(v->Device, &alloc_info, &descriptor_set);
- check_vk_result(err);
- }
- // Update the Descriptor Set:
- {
- VkDescriptorImageInfo desc_image[1] = {};
- desc_image[0].sampler = sampler;
- desc_image[0].imageView = image_view;
- desc_image[0].imageLayout = image_layout;
- VkWriteDescriptorSet write_desc[1] = {};
- write_desc[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
- write_desc[0].dstSet = descriptor_set;
- write_desc[0].descriptorCount = 1;
- write_desc[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
- write_desc[0].pImageInfo = desc_image;
- vkUpdateDescriptorSets(v->Device, 1, write_desc, 0, nullptr);
- }
- return descriptor_set;
- }
- void ImGui_ImplVulkan_RemoveTexture(VkDescriptorSet descriptor_set)
- {
- ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
- ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
- VkDescriptorPool pool = bd->DescriptorPool ? bd->DescriptorPool : v->DescriptorPool;
- vkFreeDescriptorSets(v->Device, pool, 1, &descriptor_set);
- }
- void ImGui_ImplVulkan_DestroyFrameRenderBuffers(VkDevice device, ImGui_ImplVulkan_FrameRenderBuffers* buffers, const VkAllocationCallbacks* allocator)
- {
- if (buffers->VertexBuffer) { vkDestroyBuffer(device, buffers->VertexBuffer, allocator); buffers->VertexBuffer = VK_NULL_HANDLE; }
- if (buffers->VertexBufferMemory) { vkFreeMemory(device, buffers->VertexBufferMemory, allocator); buffers->VertexBufferMemory = VK_NULL_HANDLE; }
- if (buffers->IndexBuffer) { vkDestroyBuffer(device, buffers->IndexBuffer, allocator); buffers->IndexBuffer = VK_NULL_HANDLE; }
- if (buffers->IndexBufferMemory) { vkFreeMemory(device, buffers->IndexBufferMemory, allocator); buffers->IndexBufferMemory = VK_NULL_HANDLE; }
- buffers->VertexBufferSize = 0;
- buffers->IndexBufferSize = 0;
- }
- void ImGui_ImplVulkan_DestroyWindowRenderBuffers(VkDevice device, ImGui_ImplVulkan_WindowRenderBuffers* buffers, const VkAllocationCallbacks* allocator)
- {
- for (uint32_t n = 0; n < buffers->Count; n++)
- ImGui_ImplVulkan_DestroyFrameRenderBuffers(device, &buffers->FrameRenderBuffers[n], allocator);
- buffers->FrameRenderBuffers.clear();
- buffers->Index = 0;
- buffers->Count = 0;
- }
- //-------------------------------------------------------------------------
- // 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.
- // Those functions only exist because:
- // 1) they facilitate the readability and maintenance of the multiple main.cpp examples files.
- // 2) the upcoming multi-viewport feature will need them internally.
- // Generally we avoid exposing any kind of superfluous high-level helpers in the backends,
- // but it is too much code to duplicate everywhere so we exceptionally expose them.
- //
- // Your engine/app 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.
- // (The ImGui_ImplVulkanH_XXX functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions)
- //-------------------------------------------------------------------------
- VkSurfaceFormatKHR ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space)
- {
- IM_ASSERT(g_FunctionsLoaded && "Need to call ImGui_ImplVulkan_LoadFunctions() if IMGUI_IMPL_VULKAN_NO_PROTOTYPES or VK_NO_PROTOTYPES are set!");
- IM_ASSERT(request_formats != nullptr);
- IM_ASSERT(request_formats_count > 0);
- // Per Spec Format and View Format are expected to be the same unless VK_IMAGE_CREATE_MUTABLE_BIT was set at image creation
- // Assuming that the default behavior is without setting this bit, there is no need for separate Swapchain image and image view format
- // Additionally several new color spaces were introduced with Vulkan Spec v1.0.40,
- // hence we must make sure that a format with the mostly available color space, VK_COLOR_SPACE_SRGB_NONLINEAR_KHR, is found and used.
- uint32_t avail_count;
- vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &avail_count, nullptr);
- ImVector<VkSurfaceFormatKHR> avail_format;
- avail_format.resize((int)avail_count);
- vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &avail_count, avail_format.Data);
- // First check if only one format, VK_FORMAT_UNDEFINED, is available, which would imply that any format is available
- if (avail_count == 1)
- {
- if (avail_format[0].format == VK_FORMAT_UNDEFINED)
- {
- VkSurfaceFormatKHR ret;
- ret.format = request_formats[0];
- ret.colorSpace = request_color_space;
- return ret;
- }
- else
- {
- // No point in searching another format
- return avail_format[0];
- }
- }
- else
- {
- // Request several formats, the first found will be used
- for (int request_i = 0; request_i < request_formats_count; request_i++)
- for (uint32_t avail_i = 0; avail_i < avail_count; avail_i++)
- if (avail_format[avail_i].format == request_formats[request_i] && avail_format[avail_i].colorSpace == request_color_space)
- return avail_format[avail_i];
- // If none of the requested image formats could be found, use the first available
- return avail_format[0];
- }
- }
- VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count)
- {
- IM_ASSERT(g_FunctionsLoaded && "Need to call ImGui_ImplVulkan_LoadFunctions() if IMGUI_IMPL_VULKAN_NO_PROTOTYPES or VK_NO_PROTOTYPES are set!");
- IM_ASSERT(request_modes != nullptr);
- IM_ASSERT(request_modes_count > 0);
- // Request a certain mode and confirm that it is available. If not use VK_PRESENT_MODE_FIFO_KHR which is mandatory
- uint32_t avail_count = 0;
- vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &avail_count, nullptr);
- ImVector<VkPresentModeKHR> avail_modes;
- avail_modes.resize((int)avail_count);
- vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &avail_count, avail_modes.Data);
- //for (uint32_t avail_i = 0; avail_i < avail_count; avail_i++)
- // printf("[vulkan] avail_modes[%d] = %d\n", avail_i, avail_modes[avail_i]);
- for (int request_i = 0; request_i < request_modes_count; request_i++)
- for (uint32_t avail_i = 0; avail_i < avail_count; avail_i++)
- if (request_modes[request_i] == avail_modes[avail_i])
- return request_modes[request_i];
- return VK_PRESENT_MODE_FIFO_KHR; // Always available
- }
- VkPhysicalDevice ImGui_ImplVulkanH_SelectPhysicalDevice(VkInstance instance)
- {
- uint32_t gpu_count;
- VkResult err = vkEnumeratePhysicalDevices(instance, &gpu_count, nullptr);
- check_vk_result(err);
- IM_ASSERT(gpu_count > 0);
- ImVector<VkPhysicalDevice> gpus;
- gpus.resize(gpu_count);
- err = vkEnumeratePhysicalDevices(instance, &gpu_count, gpus.Data);
- check_vk_result(err);
- // If a number >1 of GPUs got reported, find discrete GPU if present, or use first one available. This covers
- // most common cases (multi-gpu/integrated+dedicated graphics). Handling more complicated setups (multiple
- // dedicated GPUs) is out of scope of this sample.
- for (VkPhysicalDevice& device : gpus)
- {
- VkPhysicalDeviceProperties properties;
- vkGetPhysicalDeviceProperties(device, &properties);
- if (properties.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU)
- return device;
- }
- // Use first GPU (Integrated) is a Discrete one is not available.
- if (gpu_count > 0)
- return gpus[0];
- return VK_NULL_HANDLE;
- }
- uint32_t ImGui_ImplVulkanH_SelectQueueFamilyIndex(VkPhysicalDevice physical_device)
- {
- uint32_t count;
- vkGetPhysicalDeviceQueueFamilyProperties(physical_device, &count, nullptr);
- ImVector<VkQueueFamilyProperties> queues_properties;
- queues_properties.resize((int)count);
- vkGetPhysicalDeviceQueueFamilyProperties(physical_device, &count, queues_properties.Data);
- for (uint32_t i = 0; i < count; i++)
- if (queues_properties[i].queueFlags & VK_QUEUE_GRAPHICS_BIT)
- return i;
- return (uint32_t)-1;
- }
- void ImGui_ImplVulkanH_CreateWindowCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator)
- {
- IM_ASSERT(physical_device != VK_NULL_HANDLE && device != VK_NULL_HANDLE);
- IM_UNUSED(physical_device);
- // Create Command Buffers
- VkResult err;
- for (uint32_t i = 0; i < wd->ImageCount; i++)
- {
- ImGui_ImplVulkanH_Frame* fd = &wd->Frames[i];
- {
- VkCommandPoolCreateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
- info.flags = 0;
- 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);
- }
- }
- for (uint32_t i = 0; i < wd->SemaphoreCount; i++)
- {
- ImGui_ImplVulkanH_FrameSemaphores* fsd = &wd->FrameSemaphores[i];
- {
- VkSemaphoreCreateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
- err = vkCreateSemaphore(device, &info, allocator, &fsd->ImageAcquiredSemaphore);
- check_vk_result(err);
- err = vkCreateSemaphore(device, &info, allocator, &fsd->RenderCompleteSemaphore);
- check_vk_result(err);
- }
- }
- }
- int ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(VkPresentModeKHR present_mode)
- {
- if (present_mode == VK_PRESENT_MODE_MAILBOX_KHR)
- return 3;
- if (present_mode == VK_PRESENT_MODE_FIFO_KHR || present_mode == VK_PRESENT_MODE_FIFO_RELAXED_KHR)
- return 2;
- if (present_mode == VK_PRESENT_MODE_IMMEDIATE_KHR)
- return 1;
- IM_ASSERT(0);
- return 1;
- }
- // Also destroy old swap chain and in-flight frames data, if any.
- void ImGui_ImplVulkanH_CreateWindowSwapChain(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count)
- {
- VkResult err;
- VkSwapchainKHR old_swapchain = wd->Swapchain;
- wd->Swapchain = VK_NULL_HANDLE;
- err = vkDeviceWaitIdle(device);
- check_vk_result(err);
- // We don't use ImGui_ImplVulkanH_DestroyWindow() because we want to preserve the old swapchain to create the new one.
- // Destroy old Framebuffer
- for (uint32_t i = 0; i < wd->ImageCount; i++)
- ImGui_ImplVulkanH_DestroyFrame(device, &wd->Frames[i], allocator);
- for (uint32_t i = 0; i < wd->SemaphoreCount; i++)
- ImGui_ImplVulkanH_DestroyFrameSemaphores(device, &wd->FrameSemaphores[i], allocator);
- wd->Frames.clear();
- wd->FrameSemaphores.clear();
- wd->ImageCount = 0;
- if (wd->RenderPass)
- vkDestroyRenderPass(device, wd->RenderPass, allocator);
- if (wd->Pipeline)
- vkDestroyPipeline(device, wd->Pipeline, allocator);
- // If min image count was not specified, request different count of images dependent on selected present mode
- if (min_image_count == 0)
- min_image_count = ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(wd->PresentMode);
- // Create Swapchain
- {
- VkSurfaceCapabilitiesKHR cap;
- err = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physical_device, wd->Surface, &cap);
- check_vk_result(err);
- VkSwapchainCreateInfoKHR info = {};
- info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
- info.surface = wd->Surface;
- info.minImageCount = min_image_count;
- info.imageFormat = wd->SurfaceFormat.format;
- info.imageColorSpace = wd->SurfaceFormat.colorSpace;
- info.imageArrayLayers = 1;
- info.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
- info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE; // Assume that graphics family == present family
- info.preTransform = (cap.supportedTransforms & VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR) ? VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR : cap.currentTransform;
- info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
- info.presentMode = wd->PresentMode;
- info.clipped = VK_TRUE;
- info.oldSwapchain = old_swapchain;
- if (info.minImageCount < cap.minImageCount)
- info.minImageCount = cap.minImageCount;
- else if (cap.maxImageCount != 0 && info.minImageCount > cap.maxImageCount)
- info.minImageCount = cap.maxImageCount;
- if (cap.currentExtent.width == 0xffffffff)
- {
- info.imageExtent.width = wd->Width = w;
- info.imageExtent.height = wd->Height = h;
- }
- else
- {
- info.imageExtent.width = wd->Width = cap.currentExtent.width;
- info.imageExtent.height = wd->Height = cap.currentExtent.height;
- }
- err = vkCreateSwapchainKHR(device, &info, allocator, &wd->Swapchain);
- check_vk_result(err);
- err = vkGetSwapchainImagesKHR(device, wd->Swapchain, &wd->ImageCount, nullptr);
- check_vk_result(err);
- VkImage backbuffers[16] = {};
- IM_ASSERT(wd->ImageCount >= min_image_count);
- IM_ASSERT(wd->ImageCount < IM_ARRAYSIZE(backbuffers));
- err = vkGetSwapchainImagesKHR(device, wd->Swapchain, &wd->ImageCount, backbuffers);
- check_vk_result(err);
- wd->SemaphoreCount = wd->ImageCount + 1;
- wd->Frames.resize(wd->ImageCount);
- wd->FrameSemaphores.resize(wd->SemaphoreCount);
- memset(wd->Frames.Data, 0, wd->Frames.size_in_bytes());
- memset(wd->FrameSemaphores.Data, 0, wd->FrameSemaphores.size_in_bytes());
- for (uint32_t i = 0; i < wd->ImageCount; i++)
- wd->Frames[i].Backbuffer = backbuffers[i];
- }
- if (old_swapchain)
- vkDestroySwapchainKHR(device, old_swapchain, allocator);
- // Create the Render Pass
- if (wd->UseDynamicRendering == false)
- {
- VkAttachmentDescription attachment = {};
- attachment.format = wd->SurfaceFormat.format;
- attachment.samples = VK_SAMPLE_COUNT_1_BIT;
- attachment.loadOp = wd->ClearEnable ? VK_ATTACHMENT_LOAD_OP_CLEAR : VK_ATTACHMENT_LOAD_OP_DONT_CARE;
- attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
- attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
- attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
- attachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
- attachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
- VkAttachmentReference color_attachment = {};
- color_attachment.attachment = 0;
- color_attachment.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
- VkSubpassDescription subpass = {};
- subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
- subpass.colorAttachmentCount = 1;
- subpass.pColorAttachments = &color_attachment;
- VkSubpassDependency dependency = {};
- dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
- dependency.dstSubpass = 0;
- dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
- dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
- dependency.srcAccessMask = 0;
- dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
- VkRenderPassCreateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
- info.attachmentCount = 1;
- info.pAttachments = &attachment;
- info.subpassCount = 1;
- info.pSubpasses = &subpass;
- info.dependencyCount = 1;
- info.pDependencies = &dependency;
- err = vkCreateRenderPass(device, &info, allocator, &wd->RenderPass);
- check_vk_result(err);
- // We do not create a pipeline by default as this is also used by examples' main.cpp,
- // but secondary viewport in multi-viewport mode may want to create one with:
- //ImGui_ImplVulkan_CreatePipeline(device, allocator, VK_NULL_HANDLE, wd->RenderPass, VK_SAMPLE_COUNT_1_BIT, &wd->Pipeline, v->Subpass);
- }
- // Create The Image Views
- {
- VkImageViewCreateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
- info.viewType = VK_IMAGE_VIEW_TYPE_2D;
- info.format = wd->SurfaceFormat.format;
- info.components.r = VK_COMPONENT_SWIZZLE_R;
- info.components.g = VK_COMPONENT_SWIZZLE_G;
- info.components.b = VK_COMPONENT_SWIZZLE_B;
- info.components.a = VK_COMPONENT_SWIZZLE_A;
- VkImageSubresourceRange image_range = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 };
- info.subresourceRange = image_range;
- for (uint32_t i = 0; i < wd->ImageCount; i++)
- {
- ImGui_ImplVulkanH_Frame* fd = &wd->Frames[i];
- info.image = fd->Backbuffer;
- err = vkCreateImageView(device, &info, allocator, &fd->BackbufferView);
- check_vk_result(err);
- }
- }
- // Create Framebuffer
- if (wd->UseDynamicRendering == false)
- {
- VkImageView attachment[1];
- VkFramebufferCreateInfo info = {};
- info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
- info.renderPass = wd->RenderPass;
- info.attachmentCount = 1;
- info.pAttachments = attachment;
- info.width = wd->Width;
- info.height = wd->Height;
- info.layers = 1;
- for (uint32_t i = 0; i < wd->ImageCount; i++)
- {
- ImGui_ImplVulkanH_Frame* fd = &wd->Frames[i];
- attachment[0] = fd->BackbufferView;
- err = vkCreateFramebuffer(device, &info, allocator, &fd->Framebuffer);
- check_vk_result(err);
- }
- }
- }
- // Create or resize window
- void ImGui_ImplVulkanH_CreateOrResizeWindow(VkInstance instance, VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator, int width, int height, uint32_t min_image_count)
- {
- IM_ASSERT(g_FunctionsLoaded && "Need to call ImGui_ImplVulkan_LoadFunctions() if IMGUI_IMPL_VULKAN_NO_PROTOTYPES or VK_NO_PROTOTYPES are set!");
- (void)instance;
- ImGui_ImplVulkanH_CreateWindowSwapChain(physical_device, device, wd, allocator, width, height, min_image_count);
- ImGui_ImplVulkanH_CreateWindowCommandBuffers(physical_device, device, wd, queue_family, allocator);
- // FIXME: to submit the command buffer, we need a queue. In the examples folder, the ImGui_ImplVulkanH_CreateOrResizeWindow function is called
- // before the ImGui_ImplVulkan_Init function, so we don't have access to the queue yet. Here we have the queue_family that we can use to grab
- // a queue from the device and submit the command buffer. It would be better to have access to the queue as suggested in the FIXME below.
- VkCommandPool command_pool;
- VkCommandPoolCreateInfo pool_info = {};
- pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
- pool_info.queueFamilyIndex = queue_family;
- pool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
- VkResult err = vkCreateCommandPool(device, &pool_info, allocator, &command_pool);
- check_vk_result(err);
- VkFenceCreateInfo fence_info = {};
- fence_info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
- VkFence fence;
- err = vkCreateFence(device, &fence_info, allocator, &fence);
- check_vk_result(err);
- VkCommandBufferAllocateInfo alloc_info = {};
- alloc_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
- alloc_info.commandPool = command_pool;
- alloc_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
- alloc_info.commandBufferCount = 1;
- VkCommandBuffer command_buffer;
- err = vkAllocateCommandBuffers(device, &alloc_info, &command_buffer);
- 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(command_buffer, &begin_info);
- check_vk_result(err);
- // Transition the images to the correct layout for rendering
- for (uint32_t i = 0; i < wd->ImageCount; i++)
- {
- VkImageMemoryBarrier barrier = {};
- barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
- barrier.image = wd->Frames[i].Backbuffer;
- barrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
- barrier.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
- barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
- barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
- barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
- barrier.subresourceRange.levelCount = 1;
- barrier.subresourceRange.layerCount = 1;
- vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, 0, 0, nullptr, 0, nullptr, 1, &barrier);
- }
- err = vkEndCommandBuffer(command_buffer);
- check_vk_result(err);
- VkSubmitInfo submit_info = {};
- submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
- submit_info.commandBufferCount = 1;
- submit_info.pCommandBuffers = &command_buffer;
- VkQueue queue;
- vkGetDeviceQueue(device, queue_family, 0, &queue);
- err = vkQueueSubmit(queue, 1, &submit_info, fence);
- check_vk_result(err);
- err = vkWaitForFences(device, 1, &fence, VK_TRUE, UINT64_MAX);
- check_vk_result(err);
- err = vkResetFences(device, 1, &fence);
- check_vk_result(err);
- err = vkResetCommandPool(device, command_pool, 0);
- check_vk_result(err);
- // Destroy command buffer and fence and command pool
- vkFreeCommandBuffers(device, command_pool, 1, &command_buffer);
- vkDestroyCommandPool(device, command_pool, allocator);
- vkDestroyFence(device, fence, allocator);
- command_pool = VK_NULL_HANDLE;
- command_buffer = VK_NULL_HANDLE;
- fence = VK_NULL_HANDLE;
- queue = VK_NULL_HANDLE;
- }
- void ImGui_ImplVulkanH_DestroyWindow(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_Window* wd, const VkAllocationCallbacks* allocator)
- {
- vkDeviceWaitIdle(device); // FIXME: We could wait on the Queue if we had the queue in wd-> (otherwise VulkanH functions can't use globals)
- //vkQueueWaitIdle(bd->Queue);
- for (uint32_t i = 0; i < wd->ImageCount; i++)
- ImGui_ImplVulkanH_DestroyFrame(device, &wd->Frames[i], allocator);
- for (uint32_t i = 0; i < wd->SemaphoreCount; i++)
- ImGui_ImplVulkanH_DestroyFrameSemaphores(device, &wd->FrameSemaphores[i], allocator);
- wd->Frames.clear();
- wd->FrameSemaphores.clear();
- vkDestroyPipeline(device, wd->Pipeline, allocator);
- vkDestroyRenderPass(device, wd->RenderPass, allocator);
- vkDestroySwapchainKHR(device, wd->Swapchain, allocator);
- vkDestroySurfaceKHR(instance, wd->Surface, allocator);
- *wd = ImGui_ImplVulkanH_Window();
- }
- void ImGui_ImplVulkanH_DestroyFrame(VkDevice device, ImGui_ImplVulkanH_Frame* fd, const VkAllocationCallbacks* allocator)
- {
- vkDestroyFence(device, fd->Fence, allocator);
- vkFreeCommandBuffers(device, fd->CommandPool, 1, &fd->CommandBuffer);
- vkDestroyCommandPool(device, fd->CommandPool, allocator);
- fd->Fence = VK_NULL_HANDLE;
- fd->CommandBuffer = VK_NULL_HANDLE;
- fd->CommandPool = VK_NULL_HANDLE;
- vkDestroyImageView(device, fd->BackbufferView, allocator);
- vkDestroyFramebuffer(device, fd->Framebuffer, allocator);
- }
- void ImGui_ImplVulkanH_DestroyFrameSemaphores(VkDevice device, ImGui_ImplVulkanH_FrameSemaphores* fsd, const VkAllocationCallbacks* allocator)
- {
- vkDestroySemaphore(device, fsd->ImageAcquiredSemaphore, allocator);
- vkDestroySemaphore(device, fsd->RenderCompleteSemaphore, allocator);
- fsd->ImageAcquiredSemaphore = fsd->RenderCompleteSemaphore = VK_NULL_HANDLE;
- }
- //-----------------------------------------------------------------------------
- #endif // #ifndef IMGUI_DISABLE
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