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Backends: Vulkan: Support for custom function/symbol loader (#3759, #3227)

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- It adds an optional feature to support dynamic linkage of Vulkan instead of using default linkage.
 - It is now possible to have several potentially working implementation and whenever the Vulkan library was available it can work.
This commit is contained in:
Hossein Noroozpour
2021-01-26 21:04:12 +03:30
committed by ocornut
parent 066406b9be
commit 6001c54598
2 changed files with 110 additions and 14 deletions
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79
backends/imgui_impl_vulkan.cpp
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@ -48,10 +48,75 @@
// 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>
#ifdef IMGUI_IMPL_VULKAN_NO_PROTOTYPES
#define IMGUI_VULKAN_FUNCTIONS_DEF(func) static PFN_##func func;
#define IMGUI_VULKAN_FUNCTIONS_MAP(IMGUI_VULKAN_FUNCTIONS_MAP_MACRO) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkAllocateCommandBuffers) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkAllocateDescriptorSets) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkAllocateMemory) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkBindBufferMemory) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkBindImageMemory) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCmdBindDescriptorSets) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCmdBindIndexBuffer) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCmdBindPipeline) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCmdBindVertexBuffers) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCmdCopyBufferToImage) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCmdDrawIndexed) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCmdPipelineBarrier) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCmdPushConstants) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCmdSetScissor) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCmdSetViewport) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateBuffer) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateCommandPool) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateDescriptorSetLayout) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateFence) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateFramebuffer) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateGraphicsPipelines) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateImage) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateImageView) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreatePipelineLayout) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateRenderPass) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateSampler) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateSemaphore) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateShaderModule) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkCreateSwapchainKHR) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroyBuffer) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroyCommandPool) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroyDescriptorSetLayout) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroyFence) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroyFramebuffer) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroyImage) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroyImageView) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroyPipeline) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroyPipelineLayout) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroyRenderPass) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroySampler) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroySemaphore) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroyShaderModule) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroySurfaceKHR) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDestroySwapchainKHR) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkDeviceWaitIdle) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkFlushMappedMemoryRanges) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkFreeCommandBuffers) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkFreeMemory) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkGetBufferMemoryRequirements) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkGetImageMemoryRequirements) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkGetPhysicalDeviceMemoryProperties) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkGetPhysicalDeviceSurfaceCapabilitiesKHR) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkGetPhysicalDeviceSurfaceFormatsKHR) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkGetPhysicalDeviceSurfacePresentModesKHR) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkGetSwapchainImagesKHR) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkMapMemory) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkUnmapMemory) \
IMGUI_VULKAN_FUNCTIONS_MAP_MACRO(vkUpdateDescriptorSets)
IMGUI_VULKAN_FUNCTIONS_MAP(IMGUI_VULKAN_FUNCTIONS_DEF)
#undef IMGUI_VULKAN_FUNCTIONS_DEF
#endif
// Reusable buffers used for rendering 1 current in-flight frame, for ImGui_ImplVulkan_RenderDrawData()
// [Please zero-clear before use!]
struct ImGui_ImplVulkanH_FrameRenderBuffers
@ -888,6 +953,18 @@ void ImGui_ImplVulkan_DestroyDeviceObjects()
bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass)
{
#ifdef IMGUI_IMPL_VULKAN_NO_PROTOTYPES
IM_ASSERT(info->GetVulkanProcAddressFn != NULL);
#define IMGUI_VULKAN_FUNCTIONS_LOAD(func) \
func = reinterpret_cast<decltype(func)>(info->GetVulkanProcAddressFn(info->user_data, #func)); \
if(NULL == func) { \
return false; \
}
IMGUI_VULKAN_FUNCTIONS_MAP(IMGUI_VULKAN_FUNCTIONS_LOAD)
#undef IMGUI_VULKAN_FUNCTIONS_LOAD
#endif
// Setup backend capabilities flags
ImGuiIO& io = ImGui::GetIO();
io.BackendRendererName = "imgui_impl_vulkan";