// dear imgui: Renderer Backend for Vulkan // This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..) // Implemented features: // [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices. // [x] Platform: Multi-viewport / platform windows. With issues (flickering when creating a new viewport). // Missing features: // [ ] Renderer: User texture binding. Changes of ImTextureID aren't supported by this backend! See https://github.com/ocornut/imgui/pull/914 // You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this. // If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp. // Read online: https://github.com/ocornut/imgui/tree/master/docs // 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/ // 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) // 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" #include "imgui_impl_vulkan.h" #include // Reusable buffers used for rendering 1 current in-flight frame, for ImGui_ImplVulkan_RenderDrawData() // [Please zero-clear before use!] struct ImGui_ImplVulkanH_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_ImplVulkanH_WindowRenderBuffers { uint32_t Index; uint32_t Count; ImGui_ImplVulkanH_FrameRenderBuffers* FrameRenderBuffers; }; // For multi-viewport support: // Helper structure we store in the void* RenderUserData field of each ImGuiViewport to easily retrieve our backend data. struct ImGuiViewportDataVulkan { bool WindowOwned; ImGui_ImplVulkanH_Window Window; // Used by secondary viewports only ImGui_ImplVulkanH_WindowRenderBuffers RenderBuffers; // Used by all viewports ImGuiViewportDataVulkan() { WindowOwned = false; memset(&RenderBuffers, 0, sizeof(RenderBuffers)); } ~ImGuiViewportDataVulkan() { } }; // Vulkan data static ImGui_ImplVulkan_InitInfo g_VulkanInitInfo = {}; static VkRenderPass g_RenderPass = VK_NULL_HANDLE; static VkDeviceSize g_BufferMemoryAlignment = 256; static VkPipelineCreateFlags g_PipelineCreateFlags = 0x00; static VkDescriptorSetLayout g_DescriptorSetLayout = VK_NULL_HANDLE; static VkPipelineLayout g_PipelineLayout = VK_NULL_HANDLE; static VkDescriptorSet g_DescriptorSet = VK_NULL_HANDLE; static VkPipeline g_Pipeline = VK_NULL_HANDLE; static uint32_t g_Subpass = 0; static VkShaderModule g_ShaderModuleVert; static VkShaderModule g_ShaderModuleFrag; // Font data static VkSampler g_FontSampler = VK_NULL_HANDLE; static VkDeviceMemory g_FontMemory = VK_NULL_HANDLE; static VkImage g_FontImage = VK_NULL_HANDLE; static VkImageView g_FontView = VK_NULL_HANDLE; static VkDeviceMemory g_UploadBufferMemory = VK_NULL_HANDLE; static VkBuffer g_UploadBuffer = VK_NULL_HANDLE; // Forward Declarations bool ImGui_ImplVulkan_CreateDeviceObjects(); void ImGui_ImplVulkan_DestroyDeviceObjects(); 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_DestroyFrameRenderBuffers(VkDevice device, ImGui_ImplVulkanH_FrameRenderBuffers* buffers, const VkAllocationCallbacks* allocator); void ImGui_ImplVulkanH_DestroyWindowRenderBuffers(VkDevice device, ImGui_ImplVulkanH_WindowRenderBuffers* buffers, const VkAllocationCallbacks* allocator); void ImGui_ImplVulkanH_DestroyAllViewportsRenderBuffers(VkDevice device, 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); //----------------------------------------------------------------------------- // SHADERS //----------------------------------------------------------------------------- // Forward Declarations static void ImGui_ImplVulkan_InitPlatformInterface(); static void ImGui_ImplVulkan_ShutdownPlatformInterface(); // 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 }; // 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 //----------------------------------------------------------------------------- static uint32_t ImGui_ImplVulkan_MemoryType(VkMemoryPropertyFlags properties, uint32_t type_bits) { ImGui_ImplVulkan_InitInfo* v = &g_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_InitInfo* v = &g_VulkanInitInfo; if (v->CheckVkResultFn) v->CheckVkResultFn(err); } static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory, VkDeviceSize& p_buffer_size, size_t new_size, VkBufferUsageFlagBits usage) { ImGui_ImplVulkan_InitInfo* v = &g_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 vertex_buffer_size_aligned = ((new_size - 1) / g_BufferMemoryAlignment + 1) * g_BufferMemoryAlignment; VkBufferCreateInfo buffer_info = {}; buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO; buffer_info.size = vertex_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); g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_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); p_buffer_size = new_size; } static void ImGui_ImplVulkan_SetupRenderState(ImDrawData* draw_data, VkPipeline pipeline, VkCommandBuffer command_buffer, ImGui_ImplVulkanH_FrameRenderBuffers* rb, int fb_width, int fb_height) { // Bind pipeline and descriptor sets: { vkCmdBindPipeline(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline); VkDescriptorSet desc_set[1] = { g_DescriptorSet }; vkCmdBindDescriptorSets(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, g_PipelineLayout, 0, 1, desc_set, 0, NULL); } // 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, g_PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, sizeof(float) * 0, sizeof(float) * 2, scale); vkCmdPushConstants(command_buffer, g_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; ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo; if (pipeline == VK_NULL_HANDLE) pipeline = g_Pipeline; // Allocate array to store enough vertex/index buffers. Each unique viewport gets its own storage. ImGuiViewportDataVulkan* viewport_renderer_data = (ImGuiViewportDataVulkan*)draw_data->OwnerViewport->RendererUserData; IM_ASSERT(viewport_renderer_data != NULL); ImGui_ImplVulkanH_WindowRenderBuffers* wrb = &viewport_renderer_data->RenderBuffers; if (wrb->FrameRenderBuffers == NULL) { wrb->Index = 0; wrb->Count = v->ImageCount; wrb->FrameRenderBuffers = (ImGui_ImplVulkanH_FrameRenderBuffers*)IM_ALLOC(sizeof(ImGui_ImplVulkanH_FrameRenderBuffers) * wrb->Count); memset(wrb->FrameRenderBuffers, 0, sizeof(ImGui_ImplVulkanH_FrameRenderBuffers) * wrb->Count); } IM_ASSERT(wrb->Count == v->ImageCount); wrb->Index = (wrb->Index + 1) % wrb->Count; ImGui_ImplVulkanH_FrameRenderBuffers* rb = &wrb->FrameRenderBuffers[wrb->Index]; if (draw_data->TotalVtxCount > 0) { // Create or resize the vertex/index buffers size_t vertex_size = draw_data->TotalVtxCount * sizeof(ImDrawVert); size_t index_size = draw_data->TotalIdxCount * sizeof(ImDrawIdx); 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 = NULL; ImDrawIdx* idx_dst = NULL; 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* cmd_list = draw_data->CmdLists[n]; memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert)); memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx)); vtx_dst += cmd_list->VtxBuffer.Size; idx_dst += cmd_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); // 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* cmd_list = draw_data->CmdLists[n]; for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++) { const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i]; if (pcmd->UserCallback != NULL) { // 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(cmd_list, pcmd); } else { // Project scissor/clipping rectangles into framebuffer space ImVec4 clip_rect; clip_rect.x = (pcmd->ClipRect.x - clip_off.x) * clip_scale.x; clip_rect.y = (pcmd->ClipRect.y - clip_off.y) * clip_scale.y; clip_rect.z = (pcmd->ClipRect.z - clip_off.x) * clip_scale.x; clip_rect.w = (pcmd->ClipRect.w - clip_off.y) * clip_scale.y; if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f) { // Negative offsets are illegal for vkCmdSetScissor if (clip_rect.x < 0.0f) clip_rect.x = 0.0f; if (clip_rect.y < 0.0f) clip_rect.y = 0.0f; // Apply scissor/clipping rectangle VkRect2D scissor; scissor.offset.x = (int32_t)(clip_rect.x); scissor.offset.y = (int32_t)(clip_rect.y); scissor.extent.width = (uint32_t)(clip_rect.z - clip_rect.x); scissor.extent.height = (uint32_t)(clip_rect.w - clip_rect.y); vkCmdSetScissor(command_buffer, 0, 1, &scissor); // Draw vkCmdDrawIndexed(command_buffer, pcmd->ElemCount, 1, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset, 0); } } } global_idx_offset += cmd_list->IdxBuffer.Size; global_vtx_offset += cmd_list->VtxBuffer.Size; } } bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer) { ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo; ImGuiIO& io = ImGui::GetIO(); unsigned char* pixels; int width, height; io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); size_t upload_size = width * height * 4 * sizeof(char); VkResult err; // 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 = width; info.extent.height = 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, &g_FontImage); check_vk_result(err); VkMemoryRequirements req; vkGetImageMemoryRequirements(v->Device, g_FontImage, &req); 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_DEVICE_LOCAL_BIT, req.memoryTypeBits); err = vkAllocateMemory(v->Device, &alloc_info, v->Allocator, &g_FontMemory); check_vk_result(err); err = vkBindImageMemory(v->Device, g_FontImage, g_FontMemory, 0); check_vk_result(err); } // Create the Image View: { VkImageViewCreateInfo info = {}; info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO; info.image = g_FontImage; 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, &g_FontView); check_vk_result(err); } // Update the Descriptor Set: { VkDescriptorImageInfo desc_image[1] = {}; desc_image[0].sampler = g_FontSampler; desc_image[0].imageView = g_FontView; desc_image[0].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; VkWriteDescriptorSet write_desc[1] = {}; write_desc[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET; write_desc[0].dstSet = g_DescriptorSet; 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, NULL); } // Create the Upload Buffer: { 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, &g_UploadBuffer); check_vk_result(err); VkMemoryRequirements req; vkGetBufferMemoryRequirements(v->Device, g_UploadBuffer, &req); g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_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, &g_UploadBufferMemory); check_vk_result(err); err = vkBindBufferMemory(v->Device, g_UploadBuffer, g_UploadBufferMemory, 0); check_vk_result(err); } // Upload to Buffer: { char* map = NULL; err = vkMapMemory(v->Device, g_UploadBufferMemory, 0, upload_size, 0, (void**)(&map)); check_vk_result(err); memcpy(map, pixels, upload_size); VkMappedMemoryRange range[1] = {}; range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE; range[0].memory = g_UploadBufferMemory; range[0].size = upload_size; err = vkFlushMappedMemoryRanges(v->Device, 1, range); check_vk_result(err); vkUnmapMemory(v->Device, g_UploadBufferMemory); } // Copy to Image: { 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 = g_FontImage; copy_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; copy_barrier[0].subresourceRange.levelCount = 1; copy_barrier[0].subresourceRange.layerCount = 1; vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_HOST_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, NULL, 0, NULL, 1, copy_barrier); VkBufferImageCopy region = {}; region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; region.imageSubresource.layerCount = 1; region.imageExtent.width = width; region.imageExtent.height = height; region.imageExtent.depth = 1; vkCmdCopyBufferToImage(command_buffer, g_UploadBuffer, g_FontImage, 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 = g_FontImage; use_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT; use_barrier[0].subresourceRange.levelCount = 1; use_barrier[0].subresourceRange.layerCount = 1; vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0, 0, NULL, 0, NULL, 1, use_barrier); } // Store our identifier io.Fonts->TexID = (ImTextureID)(intptr_t)g_FontImage; return true; } static void ImGui_ImplVulkan_CreateShaderModules(VkDevice device, const VkAllocationCallbacks* allocator) { // Create the shader modules if (g_ShaderModuleVert == NULL) { 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, &g_ShaderModuleVert); check_vk_result(err); } if (g_ShaderModuleFrag == NULL) { 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, &g_ShaderModuleFrag); check_vk_result(err); } } static void ImGui_ImplVulkan_CreateFontSampler(VkDevice device, const VkAllocationCallbacks* allocator) { if (g_FontSampler) return; 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_REPEAT; info.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT; info.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT; info.minLod = -1000; info.maxLod = 1000; info.maxAnisotropy = 1.0f; VkResult err = vkCreateSampler(device, &info, allocator, &g_FontSampler); check_vk_result(err); } static void ImGui_ImplVulkan_CreateDescriptorSetLayout(VkDevice device, const VkAllocationCallbacks* allocator) { if (g_DescriptorSetLayout) return; ImGui_ImplVulkan_CreateFontSampler(device, allocator); VkSampler sampler[1] = { g_FontSampler }; VkDescriptorSetLayoutBinding binding[1] = {}; binding[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER; binding[0].descriptorCount = 1; binding[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT; binding[0].pImmutableSamplers = sampler; VkDescriptorSetLayoutCreateInfo info = {}; info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO; info.bindingCount = 1; info.pBindings = binding; VkResult err = vkCreateDescriptorSetLayout(device, &info, allocator, &g_DescriptorSetLayout); check_vk_result(err); } static void ImGui_ImplVulkan_CreatePipelineLayout(VkDevice device, const VkAllocationCallbacks* allocator) { if (g_PipelineLayout) return; // Constants: we are using 'vec2 offset' and 'vec2 scale' instead of a full 3d projection matrix ImGui_ImplVulkan_CreateDescriptorSetLayout(device, allocator); 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] = { g_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; VkResult err = vkCreatePipelineLayout(device, &layout_info, allocator, &g_PipelineLayout); 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_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 = g_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 = g_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 = IM_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 = IM_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 = IM_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_MINUS_SRC_ALPHA; color_attachment[0].dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO; 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; ImGui_ImplVulkan_CreatePipelineLayout(device, allocator); VkGraphicsPipelineCreateInfo info = {}; info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO; info.flags = g_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 = g_PipelineLayout; info.renderPass = renderPass; info.subpass = subpass; VkResult err = vkCreateGraphicsPipelines(device, pipelineCache, 1, &info, allocator, pipeline); check_vk_result(err); } bool ImGui_ImplVulkan_CreateDeviceObjects() { ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo; VkResult err; if (!g_FontSampler) { 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_REPEAT; info.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT; info.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT; info.minLod = -1000; info.maxLod = 1000; info.maxAnisotropy = 1.0f; err = vkCreateSampler(v->Device, &info, v->Allocator, &g_FontSampler); check_vk_result(err); } if (!g_DescriptorSetLayout) { VkSampler sampler[1] = {g_FontSampler}; VkDescriptorSetLayoutBinding binding[1] = {}; binding[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER; binding[0].descriptorCount = 1; binding[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT; binding[0].pImmutableSamplers = sampler; 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, &g_DescriptorSetLayout); check_vk_result(err); } // Create Descriptor Set: { VkDescriptorSetAllocateInfo alloc_info = {}; alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO; alloc_info.descriptorPool = v->DescriptorPool; alloc_info.descriptorSetCount = 1; alloc_info.pSetLayouts = &g_DescriptorSetLayout; err = vkAllocateDescriptorSets(v->Device, &alloc_info, &g_DescriptorSet); check_vk_result(err); } if (!g_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] = { g_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, &g_PipelineLayout); check_vk_result(err); } ImGui_ImplVulkan_CreatePipeline(v->Device, v->Allocator, v->PipelineCache, g_RenderPass, v->MSAASamples, &g_Pipeline, g_Subpass); return true; } void ImGui_ImplVulkan_DestroyFontUploadObjects() { ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo; if (g_UploadBuffer) { vkDestroyBuffer(v->Device, g_UploadBuffer, v->Allocator); g_UploadBuffer = VK_NULL_HANDLE; } if (g_UploadBufferMemory) { vkFreeMemory(v->Device, g_UploadBufferMemory, v->Allocator); g_UploadBufferMemory = VK_NULL_HANDLE; } } void ImGui_ImplVulkan_DestroyDeviceObjects() { ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo; ImGui_ImplVulkanH_DestroyAllViewportsRenderBuffers(v->Device, v->Allocator); ImGui_ImplVulkan_DestroyFontUploadObjects(); if (g_ShaderModuleVert) { vkDestroyShaderModule(v->Device, g_ShaderModuleVert, v->Allocator); g_ShaderModuleVert = VK_NULL_HANDLE; } if (g_ShaderModuleFrag) { vkDestroyShaderModule(v->Device, g_ShaderModuleFrag, v->Allocator); g_ShaderModuleFrag = VK_NULL_HANDLE; } if (g_FontView) { vkDestroyImageView(v->Device, g_FontView, v->Allocator); g_FontView = VK_NULL_HANDLE; } if (g_FontImage) { vkDestroyImage(v->Device, g_FontImage, v->Allocator); g_FontImage = VK_NULL_HANDLE; } if (g_FontMemory) { vkFreeMemory(v->Device, g_FontMemory, v->Allocator); g_FontMemory = VK_NULL_HANDLE; } if (g_FontSampler) { vkDestroySampler(v->Device, g_FontSampler, v->Allocator); g_FontSampler = VK_NULL_HANDLE; } if (g_DescriptorSetLayout) { vkDestroyDescriptorSetLayout(v->Device, g_DescriptorSetLayout, v->Allocator); g_DescriptorSetLayout = VK_NULL_HANDLE; } if (g_PipelineLayout) { vkDestroyPipelineLayout(v->Device, g_PipelineLayout, v->Allocator); g_PipelineLayout = VK_NULL_HANDLE; } if (g_Pipeline) { vkDestroyPipeline(v->Device, g_Pipeline, v->Allocator); g_Pipeline = VK_NULL_HANDLE; } } bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass) { // Setup backend capabilities flags ImGuiIO& io = ImGui::GetIO(); io.BackendRendererName = "imgui_impl_vulkan"; io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes. io.BackendFlags |= ImGuiBackendFlags_RendererHasViewports; // We can create multi-viewports on the Renderer side (optional) 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); IM_ASSERT(info->DescriptorPool != VK_NULL_HANDLE); IM_ASSERT(info->MinImageCount >= 2); IM_ASSERT(info->ImageCount >= info->MinImageCount); IM_ASSERT(render_pass != VK_NULL_HANDLE); g_VulkanInitInfo = *info; g_RenderPass = render_pass; g_Subpass = info->Subpass; ImGui_ImplVulkan_CreateDeviceObjects(); // Our render function expect RendererUserData to be storing the window render buffer we need (for the main viewport we won't use ->Window) ImGuiViewport* main_viewport = ImGui::GetMainViewport(); main_viewport->RendererUserData = IM_NEW(ImGuiViewportDataVulkan)(); if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable) ImGui_ImplVulkan_InitPlatformInterface(); return true; } void ImGui_ImplVulkan_Shutdown() { // First destroy objects in all viewports ImGui_ImplVulkan_DestroyDeviceObjects(); // Manually delete main viewport render data in-case we haven't initialized for viewports ImGuiViewport* main_viewport = ImGui::GetMainViewport(); if (ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)main_viewport->RendererUserData) IM_DELETE(data); main_viewport->RendererUserData = NULL; // Clean up windows ImGui_ImplVulkan_ShutdownPlatformInterface(); } void ImGui_ImplVulkan_NewFrame() { } void ImGui_ImplVulkan_SetMinImageCount(uint32_t min_image_count) { IM_ASSERT(min_image_count >= 2); if (g_VulkanInitInfo.MinImageCount == min_image_count) return; IM_ASSERT(0); // FIXME-VIEWPORT: Unsupported. Need to recreate all swap chains! ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo; VkResult err = vkDeviceWaitIdle(v->Device); check_vk_result(err); ImGui_ImplVulkanH_DestroyAllViewportsRenderBuffers(v->Device, v->Allocator); g_VulkanInitInfo.MinImageCount = min_image_count; } //------------------------------------------------------------------------- // 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(request_formats != NULL); 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, NULL); ImVector 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(request_modes != NULL); 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, NULL); ImVector 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 } 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); (void)physical_device; (void)allocator; // Create Command Buffers VkResult err; for (uint32_t i = 0; i < wd->ImageCount; i++) { ImGui_ImplVulkanH_Frame* fd = &wd->Frames[i]; ImGui_ImplVulkanH_FrameSemaphores* fsd = &wd->FrameSemaphores[i]; { VkCommandPoolCreateInfo info = {}; info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO; info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT; info.queueFamilyIndex = queue_family; err = vkCreateCommandPool(device, &info, allocator, &fd->CommandPool); check_vk_result(err); } { VkCommandBufferAllocateInfo info = {}; info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO; info.commandPool = fd->CommandPool; info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; info.commandBufferCount = 1; err = vkAllocateCommandBuffers(device, &info, &fd->CommandBuffer); check_vk_result(err); } { VkFenceCreateInfo info = {}; info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO; info.flags = VK_FENCE_CREATE_SIGNALED_BIT; err = vkCreateFence(device, &info, allocator, &fd->Fence); check_vk_result(err); } { VkSemaphoreCreateInfo info = {}; info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO; err = vkCreateSemaphore(device, &info, allocator, &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 = NULL; 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); ImGui_ImplVulkanH_DestroyFrameSemaphores(device, &wd->FrameSemaphores[i], allocator); } IM_FREE(wd->Frames); IM_FREE(wd->FrameSemaphores); wd->Frames = NULL; wd->FrameSemaphores = NULL; 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 { 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 = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR; info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR; info.presentMode = wd->PresentMode; info.clipped = VK_TRUE; info.oldSwapchain = old_swapchain; VkSurfaceCapabilitiesKHR cap; err = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physical_device, wd->Surface, &cap); check_vk_result(err); 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, NULL); 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); IM_ASSERT(wd->Frames == NULL); wd->Frames = (ImGui_ImplVulkanH_Frame*)IM_ALLOC(sizeof(ImGui_ImplVulkanH_Frame) * wd->ImageCount); wd->FrameSemaphores = (ImGui_ImplVulkanH_FrameSemaphores*)IM_ALLOC(sizeof(ImGui_ImplVulkanH_FrameSemaphores) * wd->ImageCount); memset(wd->Frames, 0, sizeof(wd->Frames[0]) * wd->ImageCount); memset(wd->FrameSemaphores, 0, sizeof(wd->FrameSemaphores[0]) * wd->ImageCount); 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 { 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, g_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 { 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) { (void)instance; ImGui_ImplVulkanH_CreateWindowSwapChain(physical_device, device, wd, allocator, width, height, min_image_count); ImGui_ImplVulkan_CreatePipeline(device, allocator, VK_NULL_HANDLE, wd->RenderPass, VK_SAMPLE_COUNT_1_BIT, &wd->Pipeline); ImGui_ImplVulkanH_CreateWindowCommandBuffers(physical_device, device, wd, queue_family, allocator); } 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(g_Queue); for (uint32_t i = 0; i < wd->ImageCount; i++) { ImGui_ImplVulkanH_DestroyFrame(device, &wd->Frames[i], allocator); ImGui_ImplVulkanH_DestroyFrameSemaphores(device, &wd->FrameSemaphores[i], allocator); } IM_FREE(wd->Frames); IM_FREE(wd->FrameSemaphores); wd->Frames = NULL; wd->FrameSemaphores = NULL; 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; } void ImGui_ImplVulkanH_DestroyFrameRenderBuffers(VkDevice device, ImGui_ImplVulkanH_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_ImplVulkanH_DestroyWindowRenderBuffers(VkDevice device, ImGui_ImplVulkanH_WindowRenderBuffers* buffers, const VkAllocationCallbacks* allocator) { for (uint32_t n = 0; n < buffers->Count; n++) ImGui_ImplVulkanH_DestroyFrameRenderBuffers(device, &buffers->FrameRenderBuffers[n], allocator); IM_FREE(buffers->FrameRenderBuffers); buffers->FrameRenderBuffers = NULL; buffers->Index = 0; buffers->Count = 0; } void ImGui_ImplVulkanH_DestroyAllViewportsRenderBuffers(VkDevice device, const VkAllocationCallbacks* allocator) { ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); for (int n = 0; n < platform_io.Viewports.Size; n++) if (ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)platform_io.Viewports[n]->RendererUserData) ImGui_ImplVulkanH_DestroyWindowRenderBuffers(device, &data->RenderBuffers, allocator); } //-------------------------------------------------------------------------------------------------------- // MULTI-VIEWPORT / PLATFORM INTERFACE SUPPORT // This is an _advanced_ and _optional_ feature, allowing the backend to create and handle multiple viewports simultaneously. // If you are new to dear imgui or creating a new binding for dear imgui, it is recommended that you completely ignore this section first.. //-------------------------------------------------------------------------------------------------------- static void ImGui_ImplVulkan_CreateWindow(ImGuiViewport* viewport) { ImGuiViewportDataVulkan* data = IM_NEW(ImGuiViewportDataVulkan)(); viewport->RendererUserData = data; ImGui_ImplVulkanH_Window* wd = &data->Window; ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo; // Create surface ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); VkResult err = (VkResult)platform_io.Platform_CreateVkSurface(viewport, (ImU64)v->Instance, (const void*)v->Allocator, (ImU64*)&wd->Surface); check_vk_result(err); // Check for WSI support VkBool32 res; vkGetPhysicalDeviceSurfaceSupportKHR(v->PhysicalDevice, v->QueueFamily, wd->Surface, &res); if (res != VK_TRUE) { IM_ASSERT(0); // Error: no WSI support on physical device return; } // Select Surface Format const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM }; const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR; wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(v->PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace); // Select Present Mode // FIXME-VULKAN: Even thought mailbox seems to get us maximum framerate with a single window, it halves framerate with a second window etc. (w/ Nvidia and SDK 1.82.1) VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR }; wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(v->PhysicalDevice, wd->Surface, &present_modes[0], IM_ARRAYSIZE(present_modes)); //printf("[vulkan] Secondary window selected PresentMode = %d\n", wd->PresentMode); // Create SwapChain, RenderPass, Framebuffer, etc. wd->ClearEnable = (viewport->Flags & ImGuiViewportFlags_NoRendererClear) ? false : true; ImGui_ImplVulkanH_CreateOrResizeWindow(v->Instance, v->PhysicalDevice, v->Device, wd, v->QueueFamily, v->Allocator, (int)viewport->Size.x, (int)viewport->Size.y, v->MinImageCount); data->WindowOwned = true; } static void ImGui_ImplVulkan_DestroyWindow(ImGuiViewport* viewport) { // The main viewport (owned by the application) will always have RendererUserData == NULL since we didn't create the data for it. if (ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)viewport->RendererUserData) { ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo; if (data->WindowOwned) ImGui_ImplVulkanH_DestroyWindow(v->Instance, v->Device, &data->Window, v->Allocator); ImGui_ImplVulkanH_DestroyWindowRenderBuffers(v->Device, &data->RenderBuffers, v->Allocator); IM_DELETE(data); } viewport->RendererUserData = NULL; } static void ImGui_ImplVulkan_SetWindowSize(ImGuiViewport* viewport, ImVec2 size) { ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)viewport->RendererUserData; if (data == NULL) // This is NULL for the main viewport (which is left to the user/app to handle) return; ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo; data->Window.ClearEnable = (viewport->Flags & ImGuiViewportFlags_NoRendererClear) ? false : true; ImGui_ImplVulkanH_CreateOrResizeWindow(v->Instance, v->PhysicalDevice, v->Device, &data->Window, v->QueueFamily, v->Allocator, (int)size.x, (int)size.y, v->MinImageCount); } static void ImGui_ImplVulkan_RenderWindow(ImGuiViewport* viewport, void*) { ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)viewport->RendererUserData; ImGui_ImplVulkanH_Window* wd = &data->Window; ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo; VkResult err; ImGui_ImplVulkanH_Frame* fd = &wd->Frames[wd->FrameIndex]; ImGui_ImplVulkanH_FrameSemaphores* fsd = &wd->FrameSemaphores[wd->SemaphoreIndex]; { for (;;) { err = vkWaitForFences(v->Device, 1, &fd->Fence, VK_TRUE, 100); if (err == VK_SUCCESS) break; if (err == VK_TIMEOUT) continue; check_vk_result(err); } { err = vkAcquireNextImageKHR(v->Device, wd->Swapchain, UINT64_MAX, fsd->ImageAcquiredSemaphore, VK_NULL_HANDLE, &wd->FrameIndex); check_vk_result(err); fd = &wd->Frames[wd->FrameIndex]; } { err = vkResetCommandPool(v->Device, fd->CommandPool, 0); check_vk_result(err); VkCommandBufferBeginInfo info = {}; info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO; info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; err = vkBeginCommandBuffer(fd->CommandBuffer, &info); check_vk_result(err); } { ImVec4 clear_color = ImVec4(0.0f, 0.0f, 0.0f, 1.0f); memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float)); VkRenderPassBeginInfo info = {}; info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO; info.renderPass = wd->RenderPass; info.framebuffer = fd->Framebuffer; info.renderArea.extent.width = wd->Width; info.renderArea.extent.height = wd->Height; info.clearValueCount = (viewport->Flags & ImGuiViewportFlags_NoRendererClear) ? 0 : 1; info.pClearValues = (viewport->Flags & ImGuiViewportFlags_NoRendererClear) ? NULL : &wd->ClearValue; vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE); } } ImGui_ImplVulkan_RenderDrawData(viewport->DrawData, fd->CommandBuffer, wd->Pipeline); { vkCmdEndRenderPass(fd->CommandBuffer); { VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; VkSubmitInfo info = {}; info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO; info.waitSemaphoreCount = 1; info.pWaitSemaphores = &fsd->ImageAcquiredSemaphore; info.pWaitDstStageMask = &wait_stage; info.commandBufferCount = 1; info.pCommandBuffers = &fd->CommandBuffer; info.signalSemaphoreCount = 1; info.pSignalSemaphores = &fsd->RenderCompleteSemaphore; err = vkEndCommandBuffer(fd->CommandBuffer); check_vk_result(err); err = vkResetFences(v->Device, 1, &fd->Fence); check_vk_result(err); err = vkQueueSubmit(v->Queue, 1, &info, fd->Fence); check_vk_result(err); } } } static void ImGui_ImplVulkan_SwapBuffers(ImGuiViewport* viewport, void*) { ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)viewport->RendererUserData; ImGui_ImplVulkanH_Window* wd = &data->Window; ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo; VkResult err; uint32_t present_index = wd->FrameIndex; ImGui_ImplVulkanH_FrameSemaphores* fsd = &wd->FrameSemaphores[wd->SemaphoreIndex]; VkPresentInfoKHR info = {}; info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR; info.waitSemaphoreCount = 1; info.pWaitSemaphores = &fsd->RenderCompleteSemaphore; info.swapchainCount = 1; info.pSwapchains = &wd->Swapchain; info.pImageIndices = &present_index; err = vkQueuePresentKHR(v->Queue, &info); check_vk_result(err); wd->FrameIndex = (wd->FrameIndex + 1) % wd->ImageCount; // This is for the next vkWaitForFences() wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores } void ImGui_ImplVulkan_InitPlatformInterface() { ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_ViewportsEnable) IM_ASSERT(platform_io.Platform_CreateVkSurface != NULL && "Platform needs to setup the CreateVkSurface handler."); platform_io.Renderer_CreateWindow = ImGui_ImplVulkan_CreateWindow; platform_io.Renderer_DestroyWindow = ImGui_ImplVulkan_DestroyWindow; platform_io.Renderer_SetWindowSize = ImGui_ImplVulkan_SetWindowSize; platform_io.Renderer_RenderWindow = ImGui_ImplVulkan_RenderWindow; platform_io.Renderer_SwapBuffers = ImGui_ImplVulkan_SwapBuffers; } void ImGui_ImplVulkan_ShutdownPlatformInterface() { ImGui::DestroyPlatformWindows(); }