mirror of
https://github.com/ocornut/imgui.git
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Support multiple Vulkan contexts with custom loader.
Squashed.
This commit is contained in:
Lukasz Stalmirski
ocornut
parent
6228c2e1ec
commit
1adfcb5836
@ -176,18 +176,23 @@ static bool g_FunctionsLoaded = true;
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IMGUI_VULKAN_FUNC_MAP_MACRO(vkResetCommandPool) \
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IMGUI_VULKAN_FUNC_MAP_MACRO(vkUnmapMemory) \
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IMGUI_VULKAN_FUNC_MAP_MACRO(vkUpdateDescriptorSets)
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#endif // VK_NO_PROTOTYPES
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struct ImGui_ImplVulkan_Functions
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{
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#ifdef VK_NO_PROTOTYPES
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// Define function pointers
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#define IMGUI_VULKAN_FUNC_DEF(func) static PFN_##func func;
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IMGUI_VULKAN_FUNC_MAP(IMGUI_VULKAN_FUNC_DEF)
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#define IMGUI_VULKAN_FUNC_DEF(func) PFN_##func pfn_##func;
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IMGUI_VULKAN_FUNC_MAP(IMGUI_VULKAN_FUNC_DEF)
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#undef IMGUI_VULKAN_FUNC_DEF
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#endif // VK_NO_PROTOTYPES
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#if defined(VK_VERSION_1_3) || defined(VK_KHR_dynamic_rendering)
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#define IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
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static PFN_vkCmdBeginRenderingKHR ImGuiImplVulkanFuncs_vkCmdBeginRenderingKHR;
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static PFN_vkCmdEndRenderingKHR ImGuiImplVulkanFuncs_vkCmdEndRenderingKHR;
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PFN_vkCmdBeginRenderingKHR pfn_vkCmdBeginRenderingKHR;
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PFN_vkCmdEndRenderingKHR pfn_vkCmdEndRenderingKHR;
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#endif
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};
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// Reusable buffers used for rendering 1 current in-flight frame, for ImGui_ImplVulkan_RenderDrawData()
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// [Please zero-clear before use!]
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@ -236,6 +241,8 @@ struct ImGui_ImplVulkan_Data
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// Render buffers for main window
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ImGui_ImplVulkan_WindowRenderBuffers MainWindowRenderBuffers;
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ImGui_ImplVulkan_Functions Functions;
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ImGui_ImplVulkan_Data()
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{
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memset((void*)this, 0, sizeof(*this));
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@ -243,6 +250,82 @@ struct ImGui_ImplVulkan_Data
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}
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};
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// Globally available function pointers used for initialization of the backend data
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static ImGui_ImplVulkan_Functions g_Functions;
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// Shortcuts to the dynamically loaded function pointers
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// imvkFunctions must be a ImGui_ImplVulkan_Functions or an expression that resolves to an instance of this structure
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#ifdef VK_NO_PROTOTYPES
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#define vkAllocateCommandBuffers imvkFunctions.pfn_vkAllocateCommandBuffers
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#define vkAllocateDescriptorSets imvkFunctions.pfn_vkAllocateDescriptorSets
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#define vkAllocateMemory imvkFunctions.pfn_vkAllocateMemory
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#define vkBeginCommandBuffer imvkFunctions.pfn_vkBeginCommandBuffer
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#define vkBindBufferMemory imvkFunctions.pfn_vkBindBufferMemory
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#define vkBindImageMemory imvkFunctions.pfn_vkBindImageMemory
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#define vkCmdBindDescriptorSets imvkFunctions.pfn_vkCmdBindDescriptorSets
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#define vkCmdBindIndexBuffer imvkFunctions.pfn_vkCmdBindIndexBuffer
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#define vkCmdBindPipeline imvkFunctions.pfn_vkCmdBindPipeline
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#define vkCmdBindVertexBuffers imvkFunctions.pfn_vkCmdBindVertexBuffers
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#define vkCmdCopyBufferToImage imvkFunctions.pfn_vkCmdCopyBufferToImage
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#define vkCmdDrawIndexed imvkFunctions.pfn_vkCmdDrawIndexed
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#define vkCmdPipelineBarrier imvkFunctions.pfn_vkCmdPipelineBarrier
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#define vkCmdPushConstants imvkFunctions.pfn_vkCmdPushConstants
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#define vkCmdSetScissor imvkFunctions.pfn_vkCmdSetScissor
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#define vkCmdSetViewport imvkFunctions.pfn_vkCmdSetViewport
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#define vkCreateBuffer imvkFunctions.pfn_vkCreateBuffer
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#define vkCreateCommandPool imvkFunctions.pfn_vkCreateCommandPool
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#define vkCreateDescriptorSetLayout imvkFunctions.pfn_vkCreateDescriptorSetLayout
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#define vkCreateFence imvkFunctions.pfn_vkCreateFence
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#define vkCreateFramebuffer imvkFunctions.pfn_vkCreateFramebuffer
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#define vkCreateGraphicsPipelines imvkFunctions.pfn_vkCreateGraphicsPipelines
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#define vkCreateImage imvkFunctions.pfn_vkCreateImage
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#define vkCreateImageView imvkFunctions.pfn_vkCreateImageView
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#define vkCreatePipelineLayout imvkFunctions.pfn_vkCreatePipelineLayout
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#define vkCreateRenderPass imvkFunctions.pfn_vkCreateRenderPass
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#define vkCreateSampler imvkFunctions.pfn_vkCreateSampler
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#define vkCreateSemaphore imvkFunctions.pfn_vkCreateSemaphore
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#define vkCreateShaderModule imvkFunctions.pfn_vkCreateShaderModule
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#define vkCreateSwapchainKHR imvkFunctions.pfn_vkCreateSwapchainKHR
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#define vkDestroyBuffer imvkFunctions.pfn_vkDestroyBuffer
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#define vkDestroyCommandPool imvkFunctions.pfn_vkDestroyCommandPool
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#define vkDestroyDescriptorSetLayout imvkFunctions.pfn_vkDestroyDescriptorSetLayout
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#define vkDestroyFence imvkFunctions.pfn_vkDestroyFence
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#define vkDestroyFramebuffer imvkFunctions.pfn_vkDestroyFramebuffer
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#define vkDestroyImage imvkFunctions.pfn_vkDestroyImage
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#define vkDestroyImageView imvkFunctions.pfn_vkDestroyImageView
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#define vkDestroyPipeline imvkFunctions.pfn_vkDestroyPipeline
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#define vkDestroyPipelineLayout imvkFunctions.pfn_vkDestroyPipelineLayout
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#define vkDestroyRenderPass imvkFunctions.pfn_vkDestroyRenderPass
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#define vkDestroySampler imvkFunctions.pfn_vkDestroySampler
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#define vkDestroySemaphore imvkFunctions.pfn_vkDestroySemaphore
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#define vkDestroyShaderModule imvkFunctions.pfn_vkDestroyShaderModule
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#define vkDestroySurfaceKHR imvkFunctions.pfn_vkDestroySurfaceKHR
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#define vkDestroySwapchainKHR imvkFunctions.pfn_vkDestroySwapchainKHR
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#define vkDeviceWaitIdle imvkFunctions.pfn_vkDeviceWaitIdle
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#define vkEndCommandBuffer imvkFunctions.pfn_vkEndCommandBuffer
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#define vkFlushMappedMemoryRanges imvkFunctions.pfn_vkFlushMappedMemoryRanges
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#define vkFreeCommandBuffers imvkFunctions.pfn_vkFreeCommandBuffers
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#define vkFreeDescriptorSets imvkFunctions.pfn_vkFreeDescriptorSets
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#define vkFreeMemory imvkFunctions.pfn_vkFreeMemory
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#define vkGetBufferMemoryRequirements imvkFunctions.pfn_vkGetBufferMemoryRequirements
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#define vkGetImageMemoryRequirements imvkFunctions.pfn_vkGetImageMemoryRequirements
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#define vkGetPhysicalDeviceMemoryProperties imvkFunctions.pfn_vkGetPhysicalDeviceMemoryProperties
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#define vkGetPhysicalDeviceSurfaceCapabilitiesKHR imvkFunctions.pfn_vkGetPhysicalDeviceSurfaceCapabilitiesKHR
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#define vkGetPhysicalDeviceSurfaceFormatsKHR imvkFunctions.pfn_vkGetPhysicalDeviceSurfaceFormatsKHR
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#define vkGetPhysicalDeviceSurfacePresentModesKHR imvkFunctions.pfn_vkGetPhysicalDeviceSurfacePresentModesKHR
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#define vkGetSwapchainImagesKHR imvkFunctions.pfn_vkGetSwapchainImagesKHR
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#define vkMapMemory imvkFunctions.pfn_vkMapMemory
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#define vkQueueSubmit imvkFunctions.pfn_vkQueueSubmit
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#define vkQueueWaitIdle imvkFunctions.pfn_vkQueueWaitIdle
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#define vkResetCommandPool imvkFunctions.pfn_vkResetCommandPool
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#define vkUnmapMemory imvkFunctions.pfn_vkUnmapMemory
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#define vkUpdateDescriptorSets imvkFunctions.pfn_vkUpdateDescriptorSets
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#endif // VK_NO_PROTOTYPES
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#ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
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#define vkCmdBeginRenderingKHR imvkFunctions.pfn_vkCmdBeginRenderingKHR
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#define vkCmdEndRenderingKHR imvkFunctions.pfn_vkCmdEndRenderingKHR
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#endif
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//-----------------------------------------------------------------------------
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// SHADERS
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//-----------------------------------------------------------------------------
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@ -356,6 +439,9 @@ static uint32_t __glsl_shader_frag_spv[] =
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// FUNCTIONS
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//-----------------------------------------------------------------------------
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// Always use the current backend's functions in public interface
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#define imvkFunctions bd->Functions
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// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts
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// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts.
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// FIXME: multi-context support is not tested and probably dysfunctional in this backend.
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@ -1053,16 +1139,16 @@ bool ImGui_ImplVulkan_LoadFunctions(PFN_vkVoidFunction(*loader_func)(const ch
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// But this would be equivalent to not setting VK_NO_PROTOTYPES.
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#ifdef VK_NO_PROTOTYPES
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#define IMGUI_VULKAN_FUNC_LOAD(func) \
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func = reinterpret_cast<decltype(func)>(loader_func(#func, user_data)); \
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if (func == nullptr) \
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g_Functions.pfn_##func = reinterpret_cast<decltype(g_Functions.pfn_##func)>(loader_func(#func, user_data)); \
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if (g_Functions.pfn_##func == nullptr) \
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return false;
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IMGUI_VULKAN_FUNC_MAP(IMGUI_VULKAN_FUNC_LOAD)
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#undef IMGUI_VULKAN_FUNC_LOAD
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#ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
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// Manually load those two (see #5446)
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ImGuiImplVulkanFuncs_vkCmdBeginRenderingKHR = reinterpret_cast<PFN_vkCmdBeginRenderingKHR>(loader_func("vkCmdBeginRenderingKHR", user_data));
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ImGuiImplVulkanFuncs_vkCmdEndRenderingKHR = reinterpret_cast<PFN_vkCmdEndRenderingKHR>(loader_func("vkCmdEndRenderingKHR", user_data));
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g_Functions.pfn_vkCmdBeginRenderingKHR = reinterpret_cast<PFN_vkCmdBeginRenderingKHR>(loader_func("vkCmdBeginRenderingKHR", user_data));
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g_Functions.pfn_vkCmdEndRenderingKHR = reinterpret_cast<PFN_vkCmdEndRenderingKHR>(loader_func("vkCmdEndRenderingKHR", user_data));
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#endif
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#else
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IM_UNUSED(loader_func);
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@ -1081,11 +1167,11 @@ bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass rend
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{
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#ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
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#ifndef VK_NO_PROTOTYPES
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ImGuiImplVulkanFuncs_vkCmdBeginRenderingKHR = reinterpret_cast<PFN_vkCmdBeginRenderingKHR>(vkGetInstanceProcAddr(info->Instance, "vkCmdBeginRenderingKHR"));
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ImGuiImplVulkanFuncs_vkCmdEndRenderingKHR = reinterpret_cast<PFN_vkCmdEndRenderingKHR>(vkGetInstanceProcAddr(info->Instance, "vkCmdEndRenderingKHR"));
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g_Functions.pfn_vkCmdBeginRenderingKHR = reinterpret_cast<PFN_vkCmdBeginRenderingKHR>(vkGetInstanceProcAddr(info->Instance, "vkCmdBeginRenderingKHR"));
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g_Functions.pfn_vkCmdEndRenderingKHR = reinterpret_cast<PFN_vkCmdEndRenderingKHR>(vkGetInstanceProcAddr(info->Instance, "vkCmdEndRenderingKHR"));
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#endif
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IM_ASSERT(ImGuiImplVulkanFuncs_vkCmdBeginRenderingKHR != nullptr);
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IM_ASSERT(ImGuiImplVulkanFuncs_vkCmdEndRenderingKHR != nullptr);
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IM_ASSERT(g_Functions.pfn_vkCmdBeginRenderingKHR != nullptr);
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IM_ASSERT(g_Functions.pfn_vkCmdEndRenderingKHR != nullptr);
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#else
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IM_ASSERT(0 && "Can't use dynamic rendering when neither VK_VERSION_1_3 or VK_KHR_dynamic_rendering is defined.");
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#endif
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@ -1113,6 +1199,7 @@ bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass rend
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bd->VulkanInitInfo = *info;
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bd->RenderPass = render_pass;
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bd->Subpass = info->Subpass;
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bd->Functions = g_Functions;
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ImGui_ImplVulkan_CreateDeviceObjects();
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@ -1200,6 +1287,8 @@ void ImGui_ImplVulkan_RemoveTexture(VkDescriptorSet descriptor_set)
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void ImGui_ImplVulkan_DestroyFrameRenderBuffers(VkDevice device, ImGui_ImplVulkan_FrameRenderBuffers* buffers, const VkAllocationCallbacks* allocator)
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{
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ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
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IM_UNUSED(bd); // May be unused
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if (buffers->VertexBuffer) { vkDestroyBuffer(device, buffers->VertexBuffer, allocator); buffers->VertexBuffer = VK_NULL_HANDLE; }
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if (buffers->VertexBufferMemory) { vkFreeMemory(device, buffers->VertexBufferMemory, allocator); buffers->VertexBufferMemory = VK_NULL_HANDLE; }
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if (buffers->IndexBuffer) { vkDestroyBuffer(device, buffers->IndexBuffer, allocator); buffers->IndexBuffer = VK_NULL_HANDLE; }
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@ -1234,6 +1323,10 @@ void ImGui_ImplVulkan_DestroyWindowRenderBuffers(VkDevice device, ImGui_ImplVulk
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// (The ImGui_ImplVulkanH_XXX functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions)
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//-------------------------------------------------------------------------
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// Use global function pointers
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#undef imvkFunctions
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#define imvkFunctions g_Functions
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VkSurfaceFormatKHR ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space)
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{
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IM_ASSERT(g_FunctionsLoaded && "Need to call ImGui_ImplVulkan_LoadFunctions() if IMGUI_IMPL_VULKAN_NO_PROTOTYPES or VK_NO_PROTOTYPES are set!");
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