Drezil/imgui
1
0
Fork 0
mirror of https://github.com/Drezil/imgui.git synced 2024-11-15 09:27:00 +00:00
Code Issues Packages Projects Releases Wiki Activity

Examples: Vulkan: Moved CreateOrResizeWindowData func to imgui_impl_vulkan.h

Browse Source
This commit is contained in:
omar 2018-03-02 23:59:21 +01:00
parent 426930e028
commit e0cbfd74d7
4 changed files with 271 additions and 401 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

238
examples/imgui_impl_vulkan.cpp
View File

@ -26,11 +26,12 @@
// Vulkan data // Vulkan data
static const VkAllocationCallbacks* g_Allocator = NULL; static const VkAllocationCallbacks* g_Allocator = NULL;
static VkPhysicalDevice g_PhysicalDevice = VK_NULL_HANDLE; static VkPhysicalDevice g_PhysicalDevice = VK_NULL_HANDLE;
static VkInstance g_Instance = VK_NULL_HANDLE;
static VkDevice g_Device = VK_NULL_HANDLE; static VkDevice g_Device = VK_NULL_HANDLE;
static VkRenderPass g_RenderPass = VK_NULL_HANDLE;
static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE; static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE; static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
static void (*g_CheckVkResult)(VkResult err) = NULL; static VkRenderPass g_RenderPass = VK_NULL_HANDLE;
static void (*g_CheckVkResultFn)(VkResult err) = NULL;
static VkDeviceSize g_BufferMemoryAlignment = 256; static VkDeviceSize g_BufferMemoryAlignment = 256;
static VkPipelineCreateFlags g_PipelineCreateFlags = 0; static VkPipelineCreateFlags g_PipelineCreateFlags = 0;
@ -150,13 +151,13 @@ static uint32_t ImGui_ImplVulkan_MemoryType(VkMemoryPropertyFlags properties, ui
for (uint32_t i = 0; i < prop.memoryTypeCount; i++) for (uint32_t i = 0; i < prop.memoryTypeCount; i++)
if ((prop.memoryTypes[i].propertyFlags & properties) == properties && type_bits & (1<<i)) if ((prop.memoryTypes[i].propertyFlags & properties) == properties && type_bits & (1<<i))
return i; return i;
return 0xffffffff; // Unable to find memoryType return 0xFFFFFFFF; // Unable to find memoryType
} }
static void ImGui_ImplVulkan_VkResult(VkResult err) static void check_vk_result(VkResult err)
{ {
if (g_CheckVkResult) if (g_CheckVkResultFn)
g_CheckVkResult(err); g_CheckVkResultFn(err);
} }
static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory, VkDeviceSize& p_buffer_size, size_t new_size, VkBufferUsageFlagBits usage) static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory, VkDeviceSize& p_buffer_size, size_t new_size, VkBufferUsageFlagBits usage)
@ -174,7 +175,7 @@ static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory
buffer_info.usage = usage; buffer_info.usage = usage;
buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE; buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &buffer); err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &buffer);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
VkMemoryRequirements req; VkMemoryRequirements req;
vkGetBufferMemoryRequirements(g_Device, buffer, &req); vkGetBufferMemoryRequirements(g_Device, buffer, &req);
@ -184,10 +185,10 @@ static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory
alloc_info.allocationSize = req.size; alloc_info.allocationSize = req.size;
alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits); alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &buffer_memory); err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &buffer_memory);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
err = vkBindBufferMemory(g_Device, buffer, buffer_memory, 0); err = vkBindBufferMemory(g_Device, buffer, buffer_memory, 0);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
p_buffer_size = new_size; p_buffer_size = new_size;
} }
@ -214,9 +215,9 @@ void ImGui_ImplVulkan_RenderDrawData(VkCommandBuffer command_buffer, ImDrawData*
ImDrawVert* vtx_dst; ImDrawVert* vtx_dst;
ImDrawIdx* idx_dst; ImDrawIdx* idx_dst;
err = vkMapMemory(g_Device, fd->VertexBufferMemory, 0, vertex_size, 0, (void**)(&vtx_dst)); err = vkMapMemory(g_Device, fd->VertexBufferMemory, 0, vertex_size, 0, (void**)(&vtx_dst));
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
err = vkMapMemory(g_Device, fd->IndexBufferMemory, 0, index_size, 0, (void**)(&idx_dst)); err = vkMapMemory(g_Device, fd->IndexBufferMemory, 0, index_size, 0, (void**)(&idx_dst));
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
for (int n = 0; n < draw_data->CmdListsCount; n++) for (int n = 0; n < draw_data->CmdListsCount; n++)
{ {
const ImDrawList* cmd_list = draw_data->CmdLists[n]; const ImDrawList* cmd_list = draw_data->CmdLists[n];
@ -233,7 +234,7 @@ void ImGui_ImplVulkan_RenderDrawData(VkCommandBuffer command_buffer, ImDrawData*
range[1].memory = fd->IndexBufferMemory; range[1].memory = fd->IndexBufferMemory;
range[1].size = VK_WHOLE_SIZE; range[1].size = VK_WHOLE_SIZE;
err = vkFlushMappedMemoryRanges(g_Device, 2, range); err = vkFlushMappedMemoryRanges(g_Device, 2, range);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
vkUnmapMemory(g_Device, fd->VertexBufferMemory); vkUnmapMemory(g_Device, fd->VertexBufferMemory);
vkUnmapMemory(g_Device, fd->IndexBufferMemory); vkUnmapMemory(g_Device, fd->IndexBufferMemory);
} }
@ -339,7 +340,7 @@ bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer)
info.sharingMode = VK_SHARING_MODE_EXCLUSIVE; info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
err = vkCreateImage(g_Device, &info, g_Allocator, &g_FontImage); err = vkCreateImage(g_Device, &info, g_Allocator, &g_FontImage);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
VkMemoryRequirements req; VkMemoryRequirements req;
vkGetImageMemoryRequirements(g_Device, g_FontImage, &req); vkGetImageMemoryRequirements(g_Device, g_FontImage, &req);
VkMemoryAllocateInfo alloc_info = {}; VkMemoryAllocateInfo alloc_info = {};
@ -347,9 +348,9 @@ bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer)
alloc_info.allocationSize = req.size; alloc_info.allocationSize = req.size;
alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, req.memoryTypeBits); alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, req.memoryTypeBits);
err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_FontMemory); err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_FontMemory);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
err = vkBindImageMemory(g_Device, g_FontImage, g_FontMemory, 0); err = vkBindImageMemory(g_Device, g_FontImage, g_FontMemory, 0);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
} }
// Create the Image View: // Create the Image View:
@ -363,7 +364,7 @@ bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer)
info.subresourceRange.levelCount = 1; info.subresourceRange.levelCount = 1;
info.subresourceRange.layerCount = 1; info.subresourceRange.layerCount = 1;
err = vkCreateImageView(g_Device, &info, g_Allocator, &g_FontView); err = vkCreateImageView(g_Device, &info, g_Allocator, &g_FontView);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
} }
// Update the Descriptor Set: // Update the Descriptor Set:
@ -389,7 +390,7 @@ bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer)
buffer_info.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT; buffer_info.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE; buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &g_UploadBuffer); err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &g_UploadBuffer);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
VkMemoryRequirements req; VkMemoryRequirements req;
vkGetBufferMemoryRequirements(g_Device, g_UploadBuffer, &req); vkGetBufferMemoryRequirements(g_Device, g_UploadBuffer, &req);
g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment; g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment;
@ -398,23 +399,23 @@ bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer)
alloc_info.allocationSize = req.size; alloc_info.allocationSize = req.size;
alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits); alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_UploadBufferMemory); err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_UploadBufferMemory);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
err = vkBindBufferMemory(g_Device, g_UploadBuffer, g_UploadBufferMemory, 0); err = vkBindBufferMemory(g_Device, g_UploadBuffer, g_UploadBufferMemory, 0);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
} }
// Upload to Buffer: // Upload to Buffer:
{ {
char* map = NULL; char* map = NULL;
err = vkMapMemory(g_Device, g_UploadBufferMemory, 0, upload_size, 0, (void**)(&map)); err = vkMapMemory(g_Device, g_UploadBufferMemory, 0, upload_size, 0, (void**)(&map));
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
memcpy(map, pixels, upload_size); memcpy(map, pixels, upload_size);
VkMappedMemoryRange range[1] = {}; VkMappedMemoryRange range[1] = {};
range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE; range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
range[0].memory = g_UploadBufferMemory; range[0].memory = g_UploadBufferMemory;
range[0].size = upload_size; range[0].size = upload_size;
err = vkFlushMappedMemoryRanges(g_Device, 1, range); err = vkFlushMappedMemoryRanges(g_Device, 1, range);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
vkUnmapMemory(g_Device, g_UploadBufferMemory); vkUnmapMemory(g_Device, g_UploadBufferMemory);
} }
@ -475,13 +476,13 @@ bool ImGui_ImplVulkan_CreateDeviceObjects()
vert_info.codeSize = sizeof(__glsl_shader_vert_spv); vert_info.codeSize = sizeof(__glsl_shader_vert_spv);
vert_info.pCode = (uint32_t*)__glsl_shader_vert_spv; vert_info.pCode = (uint32_t*)__glsl_shader_vert_spv;
err = vkCreateShaderModule(g_Device, &vert_info, g_Allocator, &vert_module); err = vkCreateShaderModule(g_Device, &vert_info, g_Allocator, &vert_module);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
VkShaderModuleCreateInfo frag_info = {}; VkShaderModuleCreateInfo frag_info = {};
frag_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO; frag_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
frag_info.codeSize = sizeof(__glsl_shader_frag_spv); frag_info.codeSize = sizeof(__glsl_shader_frag_spv);
frag_info.pCode = (uint32_t*)__glsl_shader_frag_spv; frag_info.pCode = (uint32_t*)__glsl_shader_frag_spv;
err = vkCreateShaderModule(g_Device, &frag_info, g_Allocator, &frag_module); err = vkCreateShaderModule(g_Device, &frag_info, g_Allocator, &frag_module);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
} }
if (!g_FontSampler) if (!g_FontSampler)
@ -498,7 +499,7 @@ bool ImGui_ImplVulkan_CreateDeviceObjects()
info.maxLod = 1000; info.maxLod = 1000;
info.maxAnisotropy = 1.0f; info.maxAnisotropy = 1.0f;
err = vkCreateSampler(g_Device, &info, g_Allocator, &g_FontSampler); err = vkCreateSampler(g_Device, &info, g_Allocator, &g_FontSampler);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
} }
if (!g_DescriptorSetLayout) if (!g_DescriptorSetLayout)
@ -514,7 +515,7 @@ bool ImGui_ImplVulkan_CreateDeviceObjects()
info.bindingCount = 1; info.bindingCount = 1;
info.pBindings = binding; info.pBindings = binding;
err = vkCreateDescriptorSetLayout(g_Device, &info, g_Allocator, &g_DescriptorSetLayout); err = vkCreateDescriptorSetLayout(g_Device, &info, g_Allocator, &g_DescriptorSetLayout);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
} }
// Create Descriptor Set: // Create Descriptor Set:
@ -525,7 +526,7 @@ bool ImGui_ImplVulkan_CreateDeviceObjects()
alloc_info.descriptorSetCount = 1; alloc_info.descriptorSetCount = 1;
alloc_info.pSetLayouts = &g_DescriptorSetLayout; alloc_info.pSetLayouts = &g_DescriptorSetLayout;
err = vkAllocateDescriptorSets(g_Device, &alloc_info, &g_DescriptorSet); err = vkAllocateDescriptorSets(g_Device, &alloc_info, &g_DescriptorSet);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
} }
if (!g_PipelineLayout) if (!g_PipelineLayout)
@ -543,7 +544,7 @@ bool ImGui_ImplVulkan_CreateDeviceObjects()
layout_info.pushConstantRangeCount = 1; layout_info.pushConstantRangeCount = 1;
layout_info.pPushConstantRanges = push_constants; layout_info.pPushConstantRanges = push_constants;
err = vkCreatePipelineLayout(g_Device, &layout_info, g_Allocator, &g_PipelineLayout); err = vkCreatePipelineLayout(g_Device, &layout_info, g_Allocator, &g_PipelineLayout);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
} }
VkPipelineShaderStageCreateInfo stage[2] = {}; VkPipelineShaderStageCreateInfo stage[2] = {};
@ -641,7 +642,7 @@ bool ImGui_ImplVulkan_CreateDeviceObjects()
info.layout = g_PipelineLayout; info.layout = g_PipelineLayout;
info.renderPass = g_RenderPass; info.renderPass = g_RenderPass;
err = vkCreateGraphicsPipelines(g_Device, g_PipelineCache, 1, &info, g_Allocator, &g_Pipeline); err = vkCreateGraphicsPipelines(g_Device, g_PipelineCache, 1, &info, g_Allocator, &g_Pipeline);
ImGui_ImplVulkan_VkResult(err); check_vk_result(err);
vkDestroyShaderModule(g_Device, vert_module, g_Allocator); vkDestroyShaderModule(g_Device, vert_module, g_Allocator);
vkDestroyShaderModule(g_Device, frag_module, g_Allocator); vkDestroyShaderModule(g_Device, frag_module, g_Allocator);
@ -685,15 +686,19 @@ void ImGui_ImplVulkan_InvalidateDeviceObjects()
if (g_Pipeline) { vkDestroyPipeline(g_Device, g_Pipeline, g_Allocator); g_Pipeline = VK_NULL_HANDLE; } if (g_Pipeline) { vkDestroyPipeline(g_Device, g_Pipeline, g_Allocator); g_Pipeline = VK_NULL_HANDLE; }
} }
bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo *init_data) bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass)
{ {
g_Allocator = init_data->Allocator; IM_ASSERT(info->Instance != NULL);
g_PhysicalDevice = init_data->PhysicalDevice; IM_ASSERT(info->PhysicalDevice != NULL);
g_Device = init_data->Device; IM_ASSERT(info->Device != NULL);
g_RenderPass = init_data->RenderPass;
g_PipelineCache = init_data->PipelineCache; g_Allocator = info->Allocator;
g_DescriptorPool = init_data->DescriptorPool; g_PhysicalDevice = info->PhysicalDevice;
g_CheckVkResult = init_data->CheckVkResultFn; g_Device = info->Device;
g_RenderPass = render_pass;
g_PipelineCache = info->PipelineCache;
g_DescriptorPool = info->DescriptorPool;
g_CheckVkResultFn = info->CheckVkResultFn;
ImGuiIO& io = ImGui::GetIO(); ImGuiIO& io = ImGui::GetIO();
ImGui_ImplVulkan_CreateDeviceObjects(); ImGui_ImplVulkan_CreateDeviceObjects();
@ -753,9 +758,7 @@ ImGui_ImplVulkan_WindowData::ImGui_ImplVulkan_WindowData()
FrameIndex = 0; FrameIndex = 0;
} }
VkSurfaceFormatKHR ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space)
VkSurfaceFormatKHR ImGui_ImplVulkan_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 != NULL);
IM_ASSERT(request_formats_count > 0); IM_ASSERT(request_formats_count > 0);
@ -799,7 +802,7 @@ VkSurfaceFormatKHR ImGui_ImplVulkan_SelectSurfaceFormat(VkPhysicalDevice physica
} }
} }
VkPresentModeKHR ImGui_ImplVulkan_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count) 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 != NULL);
IM_ASSERT(request_modes_count > 0); IM_ASSERT(request_modes_count > 0);
@ -818,6 +821,159 @@ VkPresentModeKHR ImGui_ImplVulkan_SelectPresentMode(VkPhysicalDevice physical_de
return VK_PRESENT_MODE_FIFO_KHR; // Always available return VK_PRESENT_MODE_FIFO_KHR; // Always available
} }
void ImGui_ImplVulkanH_CreateOrResizeWindowData(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h)
{
IM_ASSERT(physical_device != NULL && device != NULL);
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);
// Create Swapchain
{
VkSwapchainCreateInfoKHR info = {};
info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
info.surface = wd->Surface;
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 (cap.maxImageCount > 0)
info.minImageCount = (cap.minImageCount + 2 < cap.maxImageCount) ? (cap.minImageCount + 2) : cap.maxImageCount;
else
info.minImageCount = cap.minImageCount + 2;
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 = VK_ATTACHMENT_LOAD_OP_CLEAR;
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;
VkRenderPassCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
info.attachmentCount = 1;
info.pAttachments = &attachment;
info.subpassCount = 1;
info.pSubpasses = &subpass;
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_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator)
{
for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++)
{
ImGui_ImplVulkan_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->PresentCompleteSemaphore, 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);
}
//-------------------------------------------------------------------------------------------------------- //--------------------------------------------------------------------------------------------------------
// Platform Windows (OPTIONAL/EXPERIMENTAL) // Platform Windows (OPTIONAL/EXPERIMENTAL)
//-------------------------------------------------------------------------------------------------------- //--------------------------------------------------------------------------------------------------------
@ -826,7 +982,7 @@ VkPresentModeKHR ImGui_ImplVulkan_SelectPresentMode(VkPhysicalDevice physical_de
struct ImGuiPlatformDataVulkan struct ImGuiPlatformDataVulkan
{ {
// store swap chain, render target/frame buffer, etc. ImGui_ImplVulkan_WindowData Wd;
ImGuiPlatformDataVulkan() { } ImGuiPlatformDataVulkan() { }
~ImGuiPlatformDataVulkan() { } ~ImGuiPlatformDataVulkan() { }

19
examples/imgui_impl_vulkan.h
View File

@ -15,16 +15,16 @@
struct ImGui_ImplVulkan_InitInfo struct ImGui_ImplVulkan_InitInfo
{ {
const VkAllocationCallbacks* Allocator; VkInstance Instance;
VkPhysicalDevice PhysicalDevice; VkPhysicalDevice PhysicalDevice;
VkDevice Device; VkDevice Device;
VkRenderPass RenderPass;
VkPipelineCache PipelineCache; VkPipelineCache PipelineCache;
VkDescriptorPool DescriptorPool; VkDescriptorPool DescriptorPool;
const VkAllocationCallbacks* Allocator;
void (*CheckVkResultFn)(VkResult err); void (*CheckVkResultFn)(VkResult err);
}; };
IMGUI_API bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo *init_data); IMGUI_API bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass);
IMGUI_API void ImGui_ImplVulkan_Shutdown(); IMGUI_API void ImGui_ImplVulkan_Shutdown();
IMGUI_API void ImGui_ImplVulkan_NewFrame(); IMGUI_API void ImGui_ImplVulkan_NewFrame();
IMGUI_API void ImGui_ImplVulkan_Render(VkCommandBuffer command_buffer); IMGUI_API void ImGui_ImplVulkan_Render(VkCommandBuffer command_buffer);
@ -42,9 +42,17 @@ IMGUI_API bool ImGui_ImplVulkan_CreateDeviceObjects();
// But for the purpose of allowing multi-windows, we need those internally anyway. The code being not trivial are exposing it for the benefit of the example code. // But for the purpose of allowing multi-windows, we need those internally anyway. The code being not trivial are exposing it for the benefit of the example code.
// If your application/engine already has code to create all that data (swap chain, render pass, frame buffers, etc.) you can ignore all of this. // If your application/engine already has code to create all that data (swap chain, render pass, frame buffers, etc.) you can ignore all of this.
//------------------------------------------------------------------------- //-------------------------------------------------------------------------
// NB: Those functions do NOT use any of the state used/affected by the regular ImGui_ImplVulkan_XXX functions.
//-------------------------------------------------------------------------
IMGUI_API VkSurfaceFormatKHR ImGui_ImplVulkan_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space); struct ImGui_ImplVulkan_FrameData;
IMGUI_API VkPresentModeKHR ImGui_ImplVulkan_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count); struct ImGui_ImplVulkan_WindowData;
struct ImGui_ImplVulkan_WindowDataCreateInfo;
IMGUI_API VkSurfaceFormatKHR ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space);
IMGUI_API VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count);
IMGUI_API void ImGui_ImplVulkanH_CreateOrResizeWindowData(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h);
IMGUI_API void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, ImGui_ImplVulkan_WindowData* wd, const VkAllocationCallbacks* allocator);
struct ImGui_ImplVulkan_FrameData struct ImGui_ImplVulkan_FrameData
{ {
@ -76,3 +84,4 @@ struct ImGui_ImplVulkan_WindowData
IMGUI_API ImGui_ImplVulkan_WindowData(); IMGUI_API ImGui_ImplVulkan_WindowData();
}; };

199
examples/sdl_vulkan_example/main.cpp
View File

@ -15,17 +15,17 @@
#define IMGUI_VULKAN_DEBUG_REPORT #define IMGUI_VULKAN_DEBUG_REPORT
#endif #endif
static VkAllocationCallbacks* g_Allocator = NULL; static VkAllocationCallbacks* g_Allocator = NULL;
static VkInstance g_Instance = VK_NULL_HANDLE; static VkInstance g_Instance = VK_NULL_HANDLE;
static VkPhysicalDevice g_PhysicalDevice = VK_NULL_HANDLE; static VkPhysicalDevice g_PhysicalDevice = VK_NULL_HANDLE;
static VkDevice g_Device = VK_NULL_HANDLE; static VkDevice g_Device = VK_NULL_HANDLE;
static uint32_t g_QueueFamily = (uint32_t)-1; static uint32_t g_QueueFamily = (uint32_t)-1;
static VkQueue g_Queue = VK_NULL_HANDLE; static VkQueue g_Queue = VK_NULL_HANDLE;
static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE; static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE; static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE; static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
static ImGui_ImplVulkan_WindowData g_WindowData; static ImGui_ImplVulkan_WindowData g_WindowData;
static void check_vk_result(VkResult err) static void check_vk_result(VkResult err)
{ {
@ -35,136 +35,6 @@ static void check_vk_result(VkResult err)
abort(); abort();
} }
static void CreateOrResizeSwapChainAndFrameBuffer(ImGui_ImplVulkan_WindowData* wd, int w, int h)
{
VkResult err;
VkSwapchainKHR old_swapchain = wd->Swapchain;
err = vkDeviceWaitIdle(g_Device);
check_vk_result(err);
// Destroy old Framebuffer
for (uint32_t i = 0; i < wd->BackBufferCount; i++)
{
if (wd->BackBufferView[i])
vkDestroyImageView(g_Device, wd->BackBufferView[i], g_Allocator);
if (wd->Framebuffer[i])
vkDestroyFramebuffer(g_Device, wd->Framebuffer[i], g_Allocator);
}
wd->BackBufferCount = 0;
if (wd->RenderPass)
vkDestroyRenderPass(g_Device, wd->RenderPass, g_Allocator);
// Create Swapchain
{
VkSwapchainCreateInfoKHR info = {};
info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
info.surface = wd->Surface;
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(g_PhysicalDevice, wd->Surface, &cap);
check_vk_result(err);
if (cap.maxImageCount > 0)
info.minImageCount = (cap.minImageCount + 2 < cap.maxImageCount) ? (cap.minImageCount + 2) : cap.maxImageCount;
else
info.minImageCount = cap.minImageCount + 2;
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(g_Device, &info, g_Allocator, &wd->Swapchain);
check_vk_result(err);
err = vkGetSwapchainImagesKHR(g_Device, wd->Swapchain, &wd->BackBufferCount, NULL);
check_vk_result(err);
err = vkGetSwapchainImagesKHR(g_Device, wd->Swapchain, &wd->BackBufferCount, wd->BackBuffer);
check_vk_result(err);
}
if (old_swapchain)
vkDestroySwapchainKHR(g_Device, old_swapchain, g_Allocator);
// Create the Render Pass
{
VkAttachmentDescription attachment = {};
attachment.format = wd->SurfaceFormat.format;
attachment.samples = VK_SAMPLE_COUNT_1_BIT;
attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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;
VkRenderPassCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
info.attachmentCount = 1;
info.pAttachments = &attachment;
info.subpassCount = 1;
info.pSubpasses = &subpass;
err = vkCreateRenderPass(g_Device, &info, g_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(g_Device, &info, g_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(g_Device, &info, g_Allocator, &wd->Framebuffer[i]);
check_vk_result(err);
}
}
}
#ifdef IMGUI_VULKAN_DEBUG_REPORT #ifdef IMGUI_VULKAN_DEBUG_REPORT
static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData) static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData)
{ {
@ -222,6 +92,8 @@ static void CreateVulkanInstance(const char** extensions, uint32_t extensions_co
static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd) static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
{ {
IM_ASSERT(wd->Surface != NULL);
VkResult err; VkResult err;
// Select GPU // Select GPU
@ -272,7 +144,7 @@ static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
{ {
const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM }; 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; const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
wd->SurfaceFormat = ImGui_ImplVulkan_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace); wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
} }
// Get Present Mode // Get Present Mode
@ -282,7 +154,7 @@ static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
#else #else
VkPresentModeKHR present_mode = VK_PRESENT_MODE_FIFO_KHR; VkPresentModeKHR present_mode = VK_PRESENT_MODE_FIFO_KHR;
#endif #endif
wd->PresentMode = ImGui_ImplVulkan_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_mode, 1); wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_mode, 1);
} }
// Create Logical Device (with 1 queue) // Create Logical Device (with 1 queue)
@ -375,23 +247,7 @@ static void cleanup_vulkan()
{ {
ImGui_ImplVulkan_WindowData* wd = &g_WindowData; ImGui_ImplVulkan_WindowData* wd = &g_WindowData;
vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator); vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++) ImGui_ImplVulkanH_DestroyWindowData(g_Instance, g_Device, wd, g_Allocator);
{
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[i];
vkDestroyFence(g_Device, fd->Fence, g_Allocator);
vkFreeCommandBuffers(g_Device, fd->CommandPool, 1, &fd->CommandBuffer);
vkDestroyCommandPool(g_Device, fd->CommandPool, g_Allocator);
vkDestroySemaphore(g_Device, fd->PresentCompleteSemaphore, g_Allocator);
vkDestroySemaphore(g_Device, fd->RenderCompleteSemaphore, g_Allocator);
}
for (uint32_t i = 0; i < wd->BackBufferCount; i++)
{
vkDestroyImageView(g_Device, wd->BackBufferView[i], g_Allocator);
vkDestroyFramebuffer(g_Device, wd->Framebuffer[i], g_Allocator);
}
vkDestroyRenderPass(g_Device, wd->RenderPass, g_Allocator);
vkDestroySwapchainKHR(g_Device, wd->Swapchain, g_Allocator);
vkDestroySurfaceKHR(g_Instance, wd->Surface, g_Allocator);
#ifdef IMGUI_VULKAN_DEBUG_REPORT #ifdef IMGUI_VULKAN_DEBUG_REPORT
// Remove the debug report callback // Remove the debug report callback
@ -525,26 +381,25 @@ int main(int, char**)
{ {
int w, h; int w, h;
SDL_GetWindowSize(window, &w, &h); SDL_GetWindowSize(window, &w, &h);
CreateOrResizeSwapChainAndFrameBuffer(wd, w, h); ImGui_ImplVulkanH_CreateOrResizeWindowData(g_PhysicalDevice, g_Device, wd, g_Allocator, w, h);
} }
// Setup ImGui binding // Setup ImGui binding
ImGui::CreateContext(); ImGui::CreateContext();
ImGui_ImplVulkan_InitInfo init_info = {};
init_info.Allocator = g_Allocator;
init_info.PhysicalDevice = g_PhysicalDevice;
init_info.Device = g_Device;
init_info.RenderPass = wd->RenderPass;
init_info.PipelineCache = g_PipelineCache;
init_info.DescriptorPool = g_DescriptorPool;
init_info.CheckVkResultFn = check_vk_result;
ImGuiIO& io = ImGui::GetIO(); (void)io; ImGuiIO& io = ImGui::GetIO(); (void)io;
//io.ConfigFlags |= ImGuiConfigFlags_MultiViewports; io.ConfigFlags |= ImGuiConfigFlags_MultiViewports;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
ImGui_ImplVulkan_Init(&init_info); ImGui_ImplVulkan_InitInfo init_info = {};
init_info.Instance = g_Instance;
init_info.PhysicalDevice = g_PhysicalDevice;
init_info.Device = g_Device;
init_info.PipelineCache = g_PipelineCache;
init_info.DescriptorPool = g_DescriptorPool;
init_info.Allocator = g_Allocator;
init_info.CheckVkResultFn = check_vk_result;
ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
ImGui_ImplSDL2_Init(window, NULL); ImGui_ImplSDL2_Init(window, NULL);
// Setup style // Setup style
@ -618,7 +473,7 @@ int main(int, char**)
if (event.type == SDL_QUIT) if (event.type == SDL_QUIT)
done = true; done = true;
if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window)) if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window))
CreateOrResizeSwapChainAndFrameBuffer(wd, (int)event.window.data1, (int)event.window.data2); ImGui_ImplVulkanH_CreateOrResizeWindowData(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, (int)event.window.data1, (int)event.window.data2);
} }
ImGui_ImplVulkan_NewFrame(); ImGui_ImplVulkan_NewFrame();
ImGui_ImplSDL2_NewFrame(window); ImGui_ImplSDL2_NewFrame(window);

216
examples/vulkan_example/main.cpp
View File

@ -18,17 +18,17 @@
#define IMGUI_VULKAN_DEBUG_REPORT #define IMGUI_VULKAN_DEBUG_REPORT
#endif #endif
static VkAllocationCallbacks* g_Allocator = NULL; static VkAllocationCallbacks* g_Allocator = NULL;
static VkInstance g_Instance = VK_NULL_HANDLE; static VkInstance g_Instance = VK_NULL_HANDLE;
static VkPhysicalDevice g_PhysicalDevice = VK_NULL_HANDLE; static VkPhysicalDevice g_PhysicalDevice = VK_NULL_HANDLE;
static VkDevice g_Device = VK_NULL_HANDLE; static VkDevice g_Device = VK_NULL_HANDLE;
static uint32_t g_QueueFamily = (uint32_t)-1; static uint32_t g_QueueFamily = (uint32_t)-1;
static VkQueue g_Queue = VK_NULL_HANDLE; static VkQueue g_Queue = VK_NULL_HANDLE;
static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE; static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE; static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE; static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
static ImGui_ImplVulkan_WindowData g_WindowData; static ImGui_ImplVulkan_WindowData g_WindowData;
static void check_vk_result(VkResult err) static void check_vk_result(VkResult err)
{ {
@ -38,137 +38,6 @@ static void check_vk_result(VkResult err)
abort(); abort();
} }
static void CreateOrResizeSwapChainAndFrameBuffer(ImGui_ImplVulkan_WindowData* wd, int w, int h)
{
VkResult err;
VkSwapchainKHR old_swapchain = wd->Swapchain;
err = vkDeviceWaitIdle(g_Device);
check_vk_result(err);
// Destroy old Framebuffer
for (uint32_t i = 0; i < wd->BackBufferCount; i++)
{
if (wd->BackBufferView[i])
vkDestroyImageView(g_Device, wd->BackBufferView[i], g_Allocator);
if (wd->Framebuffer[i])
vkDestroyFramebuffer(g_Device, wd->Framebuffer[i], g_Allocator);
}
wd->BackBufferCount = 0;
if (wd->RenderPass)
vkDestroyRenderPass(g_Device, wd->RenderPass, g_Allocator);
// Create Swapchain
{
VkSwapchainCreateInfoKHR info = {};
info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
info.surface = wd->Surface;
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(g_PhysicalDevice, wd->Surface, &cap);
check_vk_result(err);
if (cap.maxImageCount > 0)
info.minImageCount = (cap.minImageCount + 2 < cap.maxImageCount) ? (cap.minImageCount + 2) : cap.maxImageCount;
else
info.minImageCount = cap.minImageCount + 2;
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(g_Device, &info, g_Allocator, &wd->Swapchain);
check_vk_result(err);
err = vkGetSwapchainImagesKHR(g_Device, wd->Swapchain, &wd->BackBufferCount, NULL);
check_vk_result(err);
IM_ASSERT(wd->BackBufferCount < IM_ARRAYSIZE(wd->BackBuffer));
err = vkGetSwapchainImagesKHR(g_Device, wd->Swapchain, &wd->BackBufferCount, wd->BackBuffer);
check_vk_result(err);
}
if (old_swapchain)
vkDestroySwapchainKHR(g_Device, old_swapchain, g_Allocator);
// Create the Render Pass
{
VkAttachmentDescription attachment = {};
attachment.format = wd->SurfaceFormat.format;
attachment.samples = VK_SAMPLE_COUNT_1_BIT;
attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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;
VkRenderPassCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
info.attachmentCount = 1;
info.pAttachments = &attachment;
info.subpassCount = 1;
info.pSubpasses = &subpass;
err = vkCreateRenderPass(g_Device, &info, g_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(g_Device, &info, g_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(g_Device, &info, g_Allocator, &wd->Framebuffer[i]);
check_vk_result(err);
}
}
}
#ifdef IMGUI_VULKAN_DEBUG_REPORT #ifdef IMGUI_VULKAN_DEBUG_REPORT
static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData) static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData)
{ {
@ -226,6 +95,8 @@ static void CreateVulkanInstance(const char** extensions, uint32_t extensions_co
static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd) static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
{ {
IM_ASSERT(wd->Surface != NULL);
VkResult err; VkResult err;
// Select GPU // Select GPU
@ -276,7 +147,7 @@ static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
{ {
const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM }; 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; const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
wd->SurfaceFormat = ImGui_ImplVulkan_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace); wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
} }
// Get Present Mode // Get Present Mode
@ -286,7 +157,7 @@ static void SetupVulkan(ImGui_ImplVulkan_WindowData* wd)
#else #else
VkPresentModeKHR present_mode = VK_PRESENT_MODE_FIFO_KHR; VkPresentModeKHR present_mode = VK_PRESENT_MODE_FIFO_KHR;
#endif #endif
wd->PresentMode = ImGui_ImplVulkan_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_mode, 1); wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_mode, 1);
} }
// Create Logical Device (with 1 queue) // Create Logical Device (with 1 queue)
@ -379,23 +250,7 @@ static void cleanup_vulkan()
{ {
ImGui_ImplVulkan_WindowData* wd = &g_WindowData; ImGui_ImplVulkan_WindowData* wd = &g_WindowData;
vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator); vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++) ImGui_ImplVulkanH_DestroyWindowData(g_Instance, g_Device, wd, g_Allocator);
{
ImGui_ImplVulkan_FrameData* fd = &wd->Frames[i];
vkDestroyFence(g_Device, fd->Fence, g_Allocator);
vkFreeCommandBuffers(g_Device, fd->CommandPool, 1, &fd->CommandBuffer);
vkDestroyCommandPool(g_Device, fd->CommandPool, g_Allocator);
vkDestroySemaphore(g_Device, fd->PresentCompleteSemaphore, g_Allocator);
vkDestroySemaphore(g_Device, fd->RenderCompleteSemaphore, g_Allocator);
}
for (uint32_t i = 0; i < wd->BackBufferCount; i++)
{
vkDestroyImageView(g_Device, wd->BackBufferView[i], g_Allocator);
vkDestroyFramebuffer(g_Device, wd->Framebuffer[i], g_Allocator);
}
vkDestroyRenderPass(g_Device, wd->RenderPass, g_Allocator);
vkDestroySwapchainKHR(g_Device, wd->Swapchain, g_Allocator);
vkDestroySurfaceKHR(g_Instance, wd->Surface, g_Allocator);
#ifdef IMGUI_VULKAN_DEBUG_REPORT #ifdef IMGUI_VULKAN_DEBUG_REPORT
// Remove the debug report callback // Remove the debug report callback
@ -499,7 +354,7 @@ static void glfw_error_callback(int error, const char* description)
static void glfw_resize_callback(GLFWwindow*, int w, int h) static void glfw_resize_callback(GLFWwindow*, int w, int h)
{ {
CreateOrResizeSwapChainAndFrameBuffer(&g_WindowData, w, h); ImGui_ImplVulkanH_CreateOrResizeWindowData(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, w, h);
} }
int main(int, char**) int main(int, char**)
@ -524,38 +379,33 @@ int main(int, char**)
// Create Window Surface // Create Window Surface
ImGui_ImplVulkan_WindowData* wd = &g_WindowData; ImGui_ImplVulkan_WindowData* wd = &g_WindowData;
{ VkResult err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &wd->Surface);
VkResult err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &wd->Surface); check_vk_result(err);
check_vk_result(err);
}
SetupVulkan(wd); SetupVulkan(wd);
// Create Framebuffers // Create Framebuffers
{ int w, h;
int w, h; glfwGetFramebufferSize(window, &w, &h);
glfwGetFramebufferSize(window, &w, &h); ImGui_ImplVulkanH_CreateOrResizeWindowData(g_PhysicalDevice, g_Device, wd, g_Allocator, w, h);
CreateOrResizeSwapChainAndFrameBuffer(wd, w, h); glfwSetFramebufferSizeCallback(window, glfw_resize_callback);
glfwSetFramebufferSizeCallback(window, glfw_resize_callback);
}
// Setup ImGui binding // Setup ImGui binding
ImGui::CreateContext(); ImGui::CreateContext();
ImGui_ImplVulkan_InitInfo init_info = {};
init_info.Allocator = g_Allocator;
init_info.PhysicalDevice = g_PhysicalDevice;
init_info.Device = g_Device;
init_info.RenderPass = wd->RenderPass;
init_info.PipelineCache = g_PipelineCache;
init_info.DescriptorPool = g_DescriptorPool;
init_info.CheckVkResultFn = check_vk_result;
ImGuiIO& io = ImGui::GetIO(); (void)io; ImGuiIO& io = ImGui::GetIO(); (void)io;
//io.ConfigFlags |= ImGuiConfigFlags_MultiViewports; io.ConfigFlags |= ImGuiConfigFlags_MultiViewports;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
ImGui_ImplVulkan_Init(&init_info); ImGui_ImplVulkan_InitInfo init_info = {};
init_info.Instance = g_Instance;
init_info.PhysicalDevice = g_PhysicalDevice;
init_info.Device = g_Device;
init_info.PipelineCache = g_PipelineCache;
init_info.DescriptorPool = g_DescriptorPool;
init_info.Allocator = g_Allocator;
init_info.CheckVkResultFn = check_vk_result;
ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
ImGui_ImplGlfw_InitForVulkan(window, true); ImGui_ImplGlfw_InitForVulkan(window, true);
// Setup style // Setup style
@ -683,7 +533,7 @@ int main(int, char**)
} }
// Cleanup // Cleanup
VkResult err = vkDeviceWaitIdle(g_Device); err = vkDeviceWaitIdle(g_Device);
check_vk_result(err); check_vk_result(err);
ImGui_ImplVulkan_Shutdown(); ImGui_ImplVulkan_Shutdown();
ImGui_ImplGlfw_Shutdown(); ImGui_ImplGlfw_Shutdown();