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Backends: Vulkan: Added ImGui_ImplVulkan_DestroyFontsTexture(), made ImGui_ImplVulkan_CreateFontsTexture() destroy previous one. (#6943, #6715, #6327, #3743, #4618)

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This commit is contained in:
ocornut
2023-11-10 14:17:11 +01:00
parent d0da79c572
commit 6e7b43b6c7
5 changed files with 132 additions and 59 deletions
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78
examples/example_sdl2_vulkan/main.cpp
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@ -39,6 +39,9 @@ static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
static VkCommandPool g_FontCommandPool = VK_NULL_HANDLE;
static VkCommandBuffer g_FontCommandBuffer = VK_NULL_HANDLE;
static ImGui_ImplVulkanH_Window g_MainWindowData;
static uint32_t g_MinImageCount = 2;
static bool g_SwapChainRebuild = false;
@ -261,6 +264,7 @@ static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface
static void CleanupVulkan()
{
vkDestroyCommandPool(g_Device, g_FontCommandPool, g_Allocator);
vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
#ifdef IMGUI_VULKAN_DEBUG_REPORT
@ -367,6 +371,51 @@ static void FramePresent(ImGui_ImplVulkanH_Window* wd)
wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
}
static void UploadFonts()
{
if (g_FontCommandPool == VK_NULL_HANDLE)
{
VkCommandPoolCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
info.queueFamilyIndex = g_QueueFamily;
vkCreateCommandPool(g_Device, &info, nullptr, &g_FontCommandPool);
}
if (g_FontCommandBuffer == VK_NULL_HANDLE)
{
VkCommandBufferAllocateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
info.commandPool = g_FontCommandPool;
info.commandBufferCount = 1;
VkResult err = vkAllocateCommandBuffers(g_Device, &info, &g_FontCommandBuffer);
check_vk_result(err);
}
VkResult err = vkResetCommandPool(g_Device, g_FontCommandPool, 0);
check_vk_result(err);
VkCommandBufferBeginInfo begin_info = {};
begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
begin_info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
err = vkBeginCommandBuffer(g_FontCommandBuffer, &begin_info);
check_vk_result(err);
ImGui_ImplVulkan_CreateFontsTexture(g_FontCommandBuffer);
VkSubmitInfo end_info = {};
end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
end_info.commandBufferCount = 1;
end_info.pCommandBuffers = &g_FontCommandBuffer;
err = vkEndCommandBuffer(g_FontCommandBuffer);
check_vk_result(err);
err = vkQueueSubmit(g_Queue, 1, &end_info, VK_NULL_HANDLE);
check_vk_result(err);
err = vkDeviceWaitIdle(g_Device);
check_vk_result(err);
ImGui_ImplVulkan_DestroyFontUploadObjects();
}
// Main code
int main(int, char**)
{
@ -454,34 +503,7 @@ int main(int, char**)
//IM_ASSERT(font != nullptr);
// Upload Fonts
{
// Use any command queue
VkCommandPool command_pool = wd->Frames[wd->FrameIndex].CommandPool;
VkCommandBuffer command_buffer = wd->Frames[wd->FrameIndex].CommandBuffer;
err = vkResetCommandPool(g_Device, command_pool, 0);
check_vk_result(err);
VkCommandBufferBeginInfo begin_info = {};
begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
begin_info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
err = vkBeginCommandBuffer(command_buffer, &begin_info);
check_vk_result(err);
ImGui_ImplVulkan_CreateFontsTexture(command_buffer);
VkSubmitInfo end_info = {};
end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
end_info.commandBufferCount = 1;
end_info.pCommandBuffers = &command_buffer;
err = vkEndCommandBuffer(command_buffer);
check_vk_result(err);
err = vkQueueSubmit(g_Queue, 1, &end_info, VK_NULL_HANDLE);
check_vk_result(err);
err = vkDeviceWaitIdle(g_Device);
check_vk_result(err);
ImGui_ImplVulkan_DestroyFontUploadObjects();
}
UploadFonts();
// Our state
bool show_demo_window = true;