renderer_vulkan: fix deadlock when resizing the SDL window

 Commit 400da1a add ability to handle recreation
of the swapchain which fix black screen under XWayland. Unfortunately, that commit
doesn't account for rapid swapchain recreation caused by resizing window.

 This commit aim to solve that issue by skipping frames to recreate the swapchain.

 Also delay resetting the frame's present done fence until after we know for sure
we will be submitting work with it.

src/video_core/renderer_vulkan/vk_presenter.cpp

@@ -628,15 +628,22 @@ Frame* Presenter::PrepareFrameInternal(VideoCore::ImageId image_id, bool is_eop)
 }
 
 void Presenter::Present(Frame* frame) {
-    // Recreate the swapchain if the window was resized.
-    if (window.GetWidth() != swapchain.GetExtent().width ||
-        window.GetHeight() != swapchain.GetExtent().height) {
+    if (swapchain.AcquireNextImage()) {
+        PresentInternal(frame);
+    } else {
         swapchain.Recreate(window.GetWidth(), window.GetHeight());
     }
+    // Free the frame for reuse
+    std::scoped_lock fl{free_mutex};
+    free_queue.push(frame);
+    free_cv.notify_one();
 
-    if (!swapchain.AcquireNextImage()) {
-        swapchain.Recreate(window.GetWidth(), window.GetHeight());
-    }
+    DebugState.IncFlipFrameNum();
+}
+
+void Presenter::PresentInternal(Frame* frame) {
+    // Reset fence for queue submission.
+    instance.GetDevice().resetFences(frame->present_done);
 
     ImGui::Core::NewFrame();
 
@@ -736,13 +743,6 @@ void Presenter::Present(Frame* frame) {
     if (!swapchain.Present()) {
         swapchain.Recreate(window.GetWidth(), window.GetHeight());
     }
-
-    // Free the frame for reuse
-    std::scoped_lock fl{free_mutex};
-    free_queue.push(frame);
-    free_cv.notify_one();
-
-    DebugState.IncFlipFrameNum();
 }
 
 Frame* Presenter::GetRenderFrame() {
@@ -776,9 +776,6 @@ Frame* Presenter::GetRenderFrame() {
         }
     }
 
-    // Reset fence for next queue submission.
-    device.resetFences(frame->present_done);
-
     // If the window dimensions changed, recreate this frame
     if (frame->width != window.GetWidth() || frame->height != window.GetHeight()) {
         RecreateFrame(frame, window.GetWidth(), window.GetHeight());

src/video_core/renderer_vulkan/vk_presenter.h

@@ -100,6 +100,7 @@ class Presenter {
 
 private:
     void CreatePostProcessPipeline();
+    void PresentInternal(Frame *frame);
     Frame* PrepareFrameInternal(VideoCore::ImageId image_id, bool is_eop = true);
     Frame* GetRenderFrame();
 

src/video_core/renderer_vulkan/vk_swapchain.cpp

@@ -84,6 +84,7 @@ void Swapchain::Create(u32 width_, u32 height_, vk::SurfaceKHR surface_) {
 }
 
 void Swapchain::Recreate(u32 width_, u32 height_) {
+    LOG_DEBUG(Render_Vulkan, "width={} height={}", width_, height_);
     Create(width_, height_, surface);
 }