diff options
Diffstat (limited to '3rdparty/imgui/examples/imgui_impl_vulkan.cpp')
| -rw-r--r-- | 3rdparty/imgui/examples/imgui_impl_vulkan.cpp | 1066 |
1 files changed, 1066 insertions, 0 deletions
diff --git a/3rdparty/imgui/examples/imgui_impl_vulkan.cpp b/3rdparty/imgui/examples/imgui_impl_vulkan.cpp new file mode 100644 index 00000000..c1d10301 --- /dev/null +++ b/3rdparty/imgui/examples/imgui_impl_vulkan.cpp @@ -0,0 +1,1066 @@ +// dear imgui: Renderer for Vulkan +// This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..) + +// Missing features: +// [ ] Renderer: User texture binding. Changes of ImTextureID aren't supported by this binding! See https://github.com/ocornut/imgui/pull/914 + +// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. +// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp. +// https://github.com/ocornut/imgui + +// 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/ + +// CHANGELOG +// (minor and older changes stripped away, please see git history for details) +// 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 bindings. +// 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 <stdio.h> + +// Vulkan data +static const VkAllocationCallbacks* g_Allocator = NULL; +static VkPhysicalDevice g_PhysicalDevice = VK_NULL_HANDLE; +static VkInstance g_Instance = VK_NULL_HANDLE; +static VkDevice g_Device = VK_NULL_HANDLE; +static uint32_t g_QueueFamily = (uint32_t)-1; +static VkQueue g_Queue = VK_NULL_HANDLE; +static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE; +static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE; +static VkRenderPass g_RenderPass = VK_NULL_HANDLE; +static void (*g_CheckVkResultFn)(VkResult err) = NULL; + +static VkDeviceSize g_BufferMemoryAlignment = 256; +static VkPipelineCreateFlags g_PipelineCreateFlags = 0; + +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; + +// Frame data +struct FrameDataForRender +{ + VkDeviceMemory VertexBufferMemory; + VkDeviceMemory IndexBufferMemory; + VkDeviceSize VertexBufferSize; + VkDeviceSize IndexBufferSize; + VkBuffer VertexBuffer; + VkBuffer IndexBuffer; +}; +static int g_FrameIndex = 0; +static FrameDataForRender g_FramesDataBuffers[IMGUI_VK_QUEUED_FRAMES] = {}; + +// 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; + +// glsl_shader.vert, compiled with: +// # glslangValidator -V -x -o glsl_shader.vert.u32 glsl_shader.vert +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 +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 +}; + +static uint32_t ImGui_ImplVulkan_MemoryType(VkMemoryPropertyFlags properties, uint32_t type_bits) +{ + VkPhysicalDeviceMemoryProperties prop; + vkGetPhysicalDeviceMemoryProperties(g_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) +{ + if (g_CheckVkResultFn) + g_CheckVkResultFn(err); +} + +static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory, VkDeviceSize& p_buffer_size, size_t new_size, VkBufferUsageFlagBits usage) +{ + VkResult err; + if (buffer != VK_NULL_HANDLE) + vkDestroyBuffer(g_Device, buffer, g_Allocator); + if (buffer_memory) + vkFreeMemory(g_Device, buffer_memory, g_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(g_Device, &buffer_info, g_Allocator, &buffer); + check_vk_result(err); + + VkMemoryRequirements req; + vkGetBufferMemoryRequirements(g_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(g_Device, &alloc_info, g_Allocator, &buffer_memory); + check_vk_result(err); + + err = vkBindBufferMemory(g_Device, buffer, buffer_memory, 0); + check_vk_result(err); + p_buffer_size = new_size; +} + +// Render function +// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop) +void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer) +{ + VkResult err; + if (draw_data->TotalVtxCount == 0) + return; + + FrameDataForRender* fd = &g_FramesDataBuffers[g_FrameIndex]; + g_FrameIndex = (g_FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES; + + // Create the Vertex and Index buffers: + size_t vertex_size = draw_data->TotalVtxCount * sizeof(ImDrawVert); + size_t index_size = draw_data->TotalIdxCount * sizeof(ImDrawIdx); + if (!fd->VertexBuffer || fd->VertexBufferSize < vertex_size) + CreateOrResizeBuffer(fd->VertexBuffer, fd->VertexBufferMemory, fd->VertexBufferSize, vertex_size, VK_BUFFER_USAGE_VERTEX_BUFFER_BIT); + if (!fd->IndexBuffer || fd->IndexBufferSize < index_size) + CreateOrResizeBuffer(fd->IndexBuffer, fd->IndexBufferMemory, fd->IndexBufferSize, index_size, VK_BUFFER_USAGE_INDEX_BUFFER_BIT); + + // Upload Vertex and index Data: + { + ImDrawVert* vtx_dst = NULL; + ImDrawIdx* idx_dst = NULL; + err = vkMapMemory(g_Device, fd->VertexBufferMemory, 0, vertex_size, 0, (void**)(&vtx_dst)); + check_vk_result(err); + err = vkMapMemory(g_Device, fd->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 = fd->VertexBufferMemory; + range[0].size = VK_WHOLE_SIZE; + range[1].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE; + range[1].memory = fd->IndexBufferMemory; + range[1].size = VK_WHOLE_SIZE; + err = vkFlushMappedMemoryRanges(g_Device, 2, range); + check_vk_result(err); + vkUnmapMemory(g_Device, fd->VertexBufferMemory); + vkUnmapMemory(g_Device, fd->IndexBufferMemory); + } + + // Bind pipeline and descriptor sets: + { + vkCmdBindPipeline(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, g_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: + { + VkBuffer vertex_buffers[1] = { fd->VertexBuffer }; + VkDeviceSize vertex_offset[1] = { 0 }; + vkCmdBindVertexBuffers(command_buffer, 0, 1, vertex_buffers, vertex_offset); + vkCmdBindIndexBuffer(command_buffer, fd->IndexBuffer, 0, VK_INDEX_TYPE_UINT16); + } + + // Setup viewport: + { + VkViewport viewport; + viewport.x = 0; + viewport.y = 0; + viewport.width = draw_data->DisplaySize.x; + viewport.height = draw_data->DisplaySize.y; + 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->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (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 the command lists: + int vtx_offset = 0; + int idx_offset = 0; + ImVec2 display_pos = draw_data->DisplayPos; + 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) + { + pcmd->UserCallback(cmd_list, pcmd); + } + else + { + // Apply scissor/clipping rectangle + // FIXME: We could clamp width/height based on clamped min/max values. + VkRect2D scissor; + scissor.offset.x = (int32_t)(pcmd->ClipRect.x - display_pos.x) > 0 ? (int32_t)(pcmd->ClipRect.x - display_pos.x) : 0; + scissor.offset.y = (int32_t)(pcmd->ClipRect.y - display_pos.y) > 0 ? (int32_t)(pcmd->ClipRect.y - display_pos.y) : 0; + scissor.extent.width = (uint32_t)(pcmd->ClipRect.z - pcmd->ClipRect.x); + scissor.extent.height = (uint32_t)(pcmd->ClipRect.w - pcmd->ClipRect.y + 1); // FIXME: Why +1 here? + vkCmdSetScissor(command_buffer, 0, 1, &scissor); + + // Draw + vkCmdDrawIndexed(command_buffer, pcmd->ElemCount, 1, idx_offset, vtx_offset, 0); + } + idx_offset += pcmd->ElemCount; + } + vtx_offset += cmd_list->VtxBuffer.Size; + } +} + +bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer) +{ + 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(g_Device, &info, g_Allocator, &g_FontImage); + check_vk_result(err); + VkMemoryRequirements req; + vkGetImageMemoryRequirements(g_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(g_Device, &alloc_info, g_Allocator, &g_FontMemory); + check_vk_result(err); + err = vkBindImageMemory(g_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(g_Device, &info, g_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(g_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(g_Device, &buffer_info, g_Allocator, &g_UploadBuffer); + check_vk_result(err); + VkMemoryRequirements req; + vkGetBufferMemoryRequirements(g_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(g_Device, &alloc_info, g_Allocator, &g_UploadBufferMemory); + check_vk_result(err); + err = vkBindBufferMemory(g_Device, g_UploadBuffer, g_UploadBufferMemory, 0); + check_vk_result(err); + } + + // Upload to Buffer: + { + char* map = NULL; + err = vkMapMemory(g_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(g_Device, 1, range); + check_vk_result(err); + vkUnmapMemory(g_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; +} + +bool ImGui_ImplVulkan_CreateDeviceObjects() +{ + VkResult err; + VkShaderModule vert_module; + VkShaderModule frag_module; + + // Create The Shader Modules: + { + 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; + err = vkCreateShaderModule(g_Device, &vert_info, g_Allocator, &vert_module); + check_vk_result(err); + 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; + err = vkCreateShaderModule(g_Device, &frag_info, g_Allocator, &frag_module); + check_vk_result(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(g_Device, &info, g_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(g_Device, &info, g_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 = g_DescriptorPool; + alloc_info.descriptorSetCount = 1; + alloc_info.pSetLayouts = &g_DescriptorSetLayout; + err = vkAllocateDescriptorSets(g_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(g_Device, &layout_info, g_Allocator, &g_PipelineLayout); + check_vk_result(err); + } + + 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 = vert_module; + 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 = frag_module; + 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 = 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; + + 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 = g_RenderPass; + err = vkCreateGraphicsPipelines(g_Device, g_PipelineCache, 1, &info, g_Allocator, &g_Pipeline); + check_vk_result(err); + + vkDestroyShaderModule(g_Device, vert_module, g_Allocator); + vkDestroyShaderModule(g_Device, frag_module, g_Allocator); + + return true; +} + +void ImGui_ImplVulkan_InvalidateFontUploadObjects() +{ + if (g_UploadBuffer) + { + vkDestroyBuffer(g_Device, g_UploadBuffer, g_Allocator); + g_UploadBuffer = VK_NULL_HANDLE; + } + if (g_UploadBufferMemory) + { + vkFreeMemory(g_Device, g_UploadBufferMemory, g_Allocator); + g_UploadBufferMemory = VK_NULL_HANDLE; + } +} + +void ImGui_ImplVulkan_InvalidateDeviceObjects() +{ + ImGui_ImplVulkan_InvalidateFontUploadObjects(); + + for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++) + { + FrameDataForRender* fd = &g_FramesDataBuffers[i]; + if (fd->VertexBuffer) { vkDestroyBuffer (g_Device, fd->VertexBuffer, g_Allocator); fd->VertexBuffer = VK_NULL_HANDLE; } + if (fd->VertexBufferMemory) { vkFreeMemory (g_Device, fd->VertexBufferMemory, g_Allocator); fd->VertexBufferMemory = VK_NULL_HANDLE; } + if (fd->IndexBuffer) { vkDestroyBuffer (g_Device, fd->IndexBuffer, g_Allocator); fd->IndexBuffer = VK_NULL_HANDLE; } + if (fd->IndexBufferMemory) { vkFreeMemory (g_Device, fd->IndexBufferMemory, g_Allocator); fd->IndexBufferMemory = VK_NULL_HANDLE; } + } + + if (g_FontView) { vkDestroyImageView(g_Device, g_FontView, g_Allocator); g_FontView = VK_NULL_HANDLE; } + if (g_FontImage) { vkDestroyImage(g_Device, g_FontImage, g_Allocator); g_FontImage = VK_NULL_HANDLE; } + if (g_FontMemory) { vkFreeMemory(g_Device, g_FontMemory, g_Allocator); g_FontMemory = VK_NULL_HANDLE; } + if (g_FontSampler) { vkDestroySampler(g_Device, g_FontSampler, g_Allocator); g_FontSampler = VK_NULL_HANDLE; } + if (g_DescriptorSetLayout) { vkDestroyDescriptorSetLayout(g_Device, g_DescriptorSetLayout, g_Allocator); g_DescriptorSetLayout = VK_NULL_HANDLE; } + if (g_PipelineLayout) { vkDestroyPipelineLayout(g_Device, g_PipelineLayout, g_Allocator); g_PipelineLayout = VK_NULL_HANDLE; } + if (g_Pipeline) { vkDestroyPipeline(g_Device, g_Pipeline, g_Allocator); g_Pipeline = VK_NULL_HANDLE; } +} + +bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass) +{ + 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(render_pass != VK_NULL_HANDLE); + + g_Instance = info->Instance; + g_PhysicalDevice = info->PhysicalDevice; + g_Device = info->Device; + g_QueueFamily = info->QueueFamily; + g_Queue = info->Queue; + g_RenderPass = render_pass; + g_PipelineCache = info->PipelineCache; + g_DescriptorPool = info->DescriptorPool; + g_Allocator = info->Allocator; + g_CheckVkResultFn = info->CheckVkResultFn; + + ImGui_ImplVulkan_CreateDeviceObjects(); + + return true; +} + +void ImGui_ImplVulkan_Shutdown() +{ + ImGui_ImplVulkan_InvalidateDeviceObjects(); +} + +void ImGui_ImplVulkan_NewFrame() +{ +} + + +//------------------------------------------------------------------------- +// Internal / Miscellaneous Vulkan Helpers +//------------------------------------------------------------------------- +// 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 bindings, +// but it is too much code to duplicate everywhere so we exceptionally expose them. +// Your application/engine will likely already have code to setup all that stuff (swap chain, render pass, frame buffers, etc.). +// You may read this code to learn about Vulkan, but it is recommended you use you own custom tailored code to do equivalent work. +// (those functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions) +//------------------------------------------------------------------------- + +#include <stdlib.h> // malloc + +ImGui_ImplVulkanH_FrameData::ImGui_ImplVulkanH_FrameData() +{ + BackbufferIndex = 0; + CommandPool = VK_NULL_HANDLE; + CommandBuffer = VK_NULL_HANDLE; + Fence = VK_NULL_HANDLE; + ImageAcquiredSemaphore = VK_NULL_HANDLE; + RenderCompleteSemaphore = VK_NULL_HANDLE; +} + +ImGui_ImplVulkanH_WindowData::ImGui_ImplVulkanH_WindowData() +{ + Width = Height = 0; + Swapchain = VK_NULL_HANDLE; + Surface = VK_NULL_HANDLE; + memset(&SurfaceFormat, 0, sizeof(SurfaceFormat)); + PresentMode = VK_PRESENT_MODE_MAX_ENUM_KHR; + RenderPass = VK_NULL_HANDLE; + ClearEnable = true; + memset(&ClearValue, 0, sizeof(ClearValue)); + BackBufferCount = 0; + memset(&BackBuffer, 0, sizeof(BackBuffer)); + memset(&BackBufferView, 0, sizeof(BackBufferView)); + memset(&Framebuffer, 0, sizeof(Framebuffer)); + FrameIndex = 0; +} + +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<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(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<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 +} + +void ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, uint32_t queue_family, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator) +{ + IM_ASSERT(physical_device != VK_NULL_HANDLE && device != VK_NULL_HANDLE); + (void)allocator; + + // Create Command Buffers + VkResult err; + for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++) + { + ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[i]; + { + VkCommandPoolCreateInfo info = {}; + info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO; + info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT; + info.queueFamilyIndex = queue_family; + err = vkCreateCommandPool(device, &info, allocator, &fd->CommandPool); + check_vk_result(err); + } + { + VkCommandBufferAllocateInfo info = {}; + info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO; + info.commandPool = fd->CommandPool; + info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; + info.commandBufferCount = 1; + err = vkAllocateCommandBuffers(device, &info, &fd->CommandBuffer); + check_vk_result(err); + } + { + VkFenceCreateInfo info = {}; + info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO; + info.flags = VK_FENCE_CREATE_SIGNALED_BIT; + err = vkCreateFence(device, &info, allocator, &fd->Fence); + check_vk_result(err); + } + { + VkSemaphoreCreateInfo info = {}; + info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO; + err = vkCreateSemaphore(device, &info, allocator, &fd->ImageAcquiredSemaphore); + check_vk_result(err); + err = vkCreateSemaphore(device, &info, allocator, &fd->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; +} + +void ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h) +{ + uint32_t min_image_count = 2; // FIXME: this should become a function parameter + + VkResult err; + VkSwapchainKHR old_swapchain = wd->Swapchain; + err = vkDeviceWaitIdle(device); + check_vk_result(err); + + // Destroy old Framebuffer + for (uint32_t i = 0; i < wd->BackBufferCount; i++) + { + if (wd->BackBufferView[i]) + vkDestroyImageView(device, wd->BackBufferView[i], allocator); + if (wd->Framebuffer[i]) + vkDestroyFramebuffer(device, wd->Framebuffer[i], allocator); + } + wd->BackBufferCount = 0; + if (wd->RenderPass) + vkDestroyRenderPass(device, wd->RenderPass, 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->BackBufferCount, NULL); + check_vk_result(err); + err = vkGetSwapchainImagesKHR(device, wd->Swapchain, &wd->BackBufferCount, wd->BackBuffer); + check_vk_result(err); + } + 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); + } + + // 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->BackBufferCount; i++) + { + info.image = wd->BackBuffer[i]; + err = vkCreateImageView(device, &info, allocator, &wd->BackBufferView[i]); + 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->BackBufferCount; i++) + { + attachment[0] = wd->BackBufferView[i]; + err = vkCreateFramebuffer(device, &info, allocator, &wd->Framebuffer[i]); + check_vk_result(err); + } + } +} + +void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator) +{ + vkDeviceWaitIdle(device); // FIXME: We could wait on the Queue if we had the queue in wd-> (otherwise VulkanH functions can't use globals) + //vkQueueWaitIdle(g_Queue); + + for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++) + { + ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[i]; + vkDestroyFence(device, fd->Fence, allocator); + vkFreeCommandBuffers(device, fd->CommandPool, 1, &fd->CommandBuffer); + vkDestroyCommandPool(device, fd->CommandPool, allocator); + vkDestroySemaphore(device, fd->ImageAcquiredSemaphore, allocator); + vkDestroySemaphore(device, fd->RenderCompleteSemaphore, allocator); + } + for (uint32_t i = 0; i < wd->BackBufferCount; i++) + { + vkDestroyImageView(device, wd->BackBufferView[i], allocator); + vkDestroyFramebuffer(device, wd->Framebuffer[i], allocator); + } + vkDestroyRenderPass(device, wd->RenderPass, allocator); + vkDestroySwapchainKHR(device, wd->Swapchain, allocator); + vkDestroySurfaceKHR(instance, wd->Surface, allocator); + *wd = ImGui_ImplVulkanH_WindowData(); +} |