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Backends: Vulkan: reworked swap-chain resize handling for secondary viewports to work with typical Linux setups. (#2626, #3390, #3758, #7508, #7513)

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This commit is contained in:
Rory O'Connell
2024-05-07 16:11:54 +02:00
committed by ocornut
parent f5d185238c
commit 8b2c6dd42f
2 changed files with 29 additions and 9 deletions
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36
backends/imgui_impl_vulkan.cpp
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@@ -228,11 +228,12 @@ struct ImGui_ImplVulkan_WindowRenderBuffers
// Helper structure we store in the void* RendererUserData field of each ImGuiViewport to easily retrieve our backend data.
struct ImGui_ImplVulkan_ViewportData
{
ImGui_ImplVulkanH_Window Window; // Used by secondary viewports only
ImGui_ImplVulkan_WindowRenderBuffers RenderBuffers; // Used by all viewports
bool WindowOwned;
ImGui_ImplVulkanH_Window Window; // Used by secondary viewports only
ImGui_ImplVulkan_WindowRenderBuffers RenderBuffers; // Used by all viewports
bool SwapChainNeedRebuild; // Flag when viewport swapchain resized in the middle of processing a frame
ImGui_ImplVulkan_ViewportData() { WindowOwned = false; memset(&RenderBuffers, 0, sizeof(RenderBuffers)); }
ImGui_ImplVulkan_ViewportData() { WindowOwned = SwapChainNeedRebuild = false; memset(&RenderBuffers, 0, sizeof(RenderBuffers)); }
~ImGui_ImplVulkan_ViewportData() { }
};
@@ -1731,13 +1732,25 @@ static void ImGui_ImplVulkan_RenderWindow(ImGuiViewport* viewport, void*)
ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
VkResult err;
if (vd->SwapChainNeedRebuild)
{
ImGui_ImplVulkanH_CreateOrResizeWindow(v->Instance, v->PhysicalDevice, v->Device, wd, v->QueueFamily, v->Allocator, (int)viewport->Size.x, (int)viewport->Size.y, v->MinImageCount);
vd->SwapChainNeedRebuild = false;
}
ImGui_ImplVulkanH_Frame* fd = &wd->Frames[wd->FrameIndex];
ImGui_ImplVulkanH_FrameSemaphores* fsd = &wd->FrameSemaphores[wd->SemaphoreIndex];
{
{
err = vkAcquireNextImageKHR(v->Device, wd->Swapchain, UINT64_MAX, fsd->ImageAcquiredSemaphore, VK_NULL_HANDLE, &wd->FrameIndex);
check_vk_result(err);
fd = &wd->Frames[wd->FrameIndex];
err = vkAcquireNextImageKHR(v->Device, wd->Swapchain, UINT64_MAX, fsd->ImageAcquiredSemaphore, VK_NULL_HANDLE, &wd->FrameIndex);
if (err == VK_ERROR_OUT_OF_DATE_KHR)
{
// Since we are not going to swap this frame anyway, it's ok that recreation happens on next frame.
vd->SwapChainNeedRebuild = true;
return;
}
check_vk_result(err);
fd = &wd->Frames[wd->FrameIndex];
}
for (;;)
{
@@ -1863,6 +1876,9 @@ static void ImGui_ImplVulkan_SwapBuffers(ImGuiViewport* viewport, void*)
ImGui_ImplVulkanH_Window* wd = &vd->Window;
ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
if (vd->SwapChainNeedRebuild) // Frame data became invalid in the middle of rendering
return;
VkResult err;
uint32_t present_index = wd->FrameIndex;
@@ -1876,9 +1892,11 @@ static void ImGui_ImplVulkan_SwapBuffers(ImGuiViewport* viewport, void*)
info.pImageIndices = &present_index;
err = vkQueuePresentKHR(v->Queue, &info);
if (err == VK_ERROR_OUT_OF_DATE_KHR || err == VK_SUBOPTIMAL_KHR)
ImGui_ImplVulkanH_CreateOrResizeWindow(v->Instance, v->PhysicalDevice, v->Device, &vd->Window, v->QueueFamily, v->Allocator, (int)viewport->Size.x, (int)viewport->Size.y, v->MinImageCount);
else
check_vk_result(err);
{
vd->SwapChainNeedRebuild = true;
return;
}
check_vk_result(err);
wd->FrameIndex = (wd->FrameIndex + 1) % wd->ImageCount; // This is for the next vkWaitForFences()
wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->SemaphoreCount; // Now we can use the next set of semaphores