libs/vkd3d: Wait for GPU fences in worker thread.

This could be implemented without a worker thread, if event objects
would be tightly coupled with ID3D12Fences.

libs/vkd3d/command.c

@@ -24,6 +24,51 @@
 #include "vkd3d_private.h"
 
 /* Fence worker thread */
+static void vkd3d_wait_for_gpu_fences(struct vkd3d_fence_worker *worker)
+{
+    struct d3d12_device *device = worker->device;
+    const struct vkd3d_vk_device_procs *vk_procs = &device->vk_procs;
+    unsigned int i, j;
+    HRESULT hr;
+    int vr;
+
+    if (!worker->fence_count)
+        return;
+
+    vr = VK_CALL(vkWaitForFences(device->vk_device,
+            worker->fence_count, worker->vk_fences, VK_FALSE, 0));
+    if (vr == VK_TIMEOUT)
+        return;
+    if (vr != VK_SUCCESS)
+    {
+        ERR("Failed to wait for Vulkan fences, vr %d.\n", vr);
+        return;
+    }
+
+    for (i = 0, j = 0; i < worker->fence_count; ++i)
+    {
+        if (!(vr = VK_CALL(vkGetFenceStatus(device->vk_device, worker->vk_fences[i]))))
+        {
+            struct vkd3d_waiting_fence *current = &worker->fences[i];
+            if (FAILED(hr = ID3D12Fence_Signal(current->fence, current->value)))
+                ERR("Failed to signal D3D12 fence, hr %d.\n", hr);
+            VK_CALL(vkDestroyFence(device->vk_device, worker->vk_fences[i], NULL));
+            continue;
+        }
+
+        if (vr != VK_NOT_READY)
+            ERR("Failed to get Vulkan fence status, vr %d.\n", vr);
+
+        if (i != j)
+        {
+            worker->vk_fences[j] = worker->vk_fences[i];
+            worker->fences[j] = worker->fences[i];
+        }
+        ++j;
+    }
+    worker->fence_count = j;
+}
+
 static void *vkd3d_fence_worker_main(void *arg)
 {
     struct vkd3d_fence_worker *worker = arg;
@@ -37,18 +82,23 @@ static void *vkd3d_fence_worker_main(void *arg)
             return NULL;
         }
 
-        if (worker->should_exit)
+        if (worker->should_exit && !worker->fence_count)
         {
             pthread_mutex_unlock(&worker->mutex);
             break;
         }
 
+        if (!worker->fence_count)
+        {
             if ((rc = pthread_cond_wait(&worker->cond, &worker->mutex)))
             {
                 ERR("Failed to wait on condition variable, error %d.\n", rc);
                 pthread_mutex_unlock(&worker->mutex);
                 return NULL;
             }
+        }
+
+        vkd3d_wait_for_gpu_fences(worker);
 
         pthread_mutex_unlock(&worker->mutex);
     }
@@ -56,13 +106,22 @@ static void *vkd3d_fence_worker_main(void *arg)
     return NULL;
 }
 
-HRESULT vkd3d_start_fence_worker(struct vkd3d_fence_worker *worker)
+HRESULT vkd3d_start_fence_worker(struct vkd3d_fence_worker *worker,
+        struct d3d12_device *device)
 {
     int rc;
 
     TRACE("worker %p.\n", worker);
 
     worker->should_exit = false;
+    worker->device = device;
+
+    worker->fence_count = 0;
+
+    worker->vk_fences = NULL;
+    worker->vk_fences_size = 0;
+    worker->fences = NULL;
+    worker->fences_size = 0;
 
     if ((rc = pthread_mutex_init(&worker->mutex, NULL)))
     {
@@ -114,6 +173,9 @@ HRESULT vkd3d_stop_fence_worker(struct vkd3d_fence_worker *worker)
     pthread_mutex_destroy(&worker->mutex);
     pthread_cond_destroy(&worker->cond);
 
+    vkd3d_free(worker->vk_fences);
+    vkd3d_free(worker->fences);
+
     return S_OK;
 }
 

libs/vkd3d/device.c

@@ -1091,7 +1091,7 @@ static HRESULT d3d12_device_init(struct d3d12_device *device,
 
     device->signal_event = create_info->signal_event_pfn;
 
-    if (FAILED(hr = vkd3d_start_fence_worker(&device->fence_worker)))
+    if (FAILED(hr = vkd3d_start_fence_worker(&device->fence_worker, device)))
     {
         const struct vkd3d_vk_device_procs *vk_procs = &device->vk_procs;
         VK_CALL(vkDestroyDevice(device->vk_device, NULL));

libs/vkd3d/vkd3d_private.h

@@ -45,21 +45,28 @@ struct vkd3d_instance
     struct vkd3d_vk_instance_procs vk_procs;
 };
 
-struct vkd3d_waiting_event
-{
-    UINT64 value;
-    HANDLE event;
-};
-
 struct vkd3d_fence_worker
 {
     pthread_t thread;
     pthread_mutex_t mutex;
     pthread_cond_t cond;
     bool should_exit;
+
+    size_t fence_count;
+    VkFence *vk_fences;
+    size_t vk_fences_size;
+    struct vkd3d_waiting_fence
+    {
+        ID3D12Fence *fence;
+        UINT64 value;
+    } *fences;
+    size_t fences_size;
+
+    struct d3d12_device *device;
 };
 
-HRESULT vkd3d_start_fence_worker(struct vkd3d_fence_worker *worker) DECLSPEC_HIDDEN;
+HRESULT vkd3d_start_fence_worker(struct vkd3d_fence_worker *worker,
+        struct d3d12_device *device) DECLSPEC_HIDDEN;
 HRESULT vkd3d_stop_fence_worker(struct vkd3d_fence_worker *worker) DECLSPEC_HIDDEN;
 
 /* ID3D12Fence */
@@ -71,7 +78,11 @@ struct d3d12_fence
     UINT64 value;
     pthread_mutex_t mutex;
 
-    struct vkd3d_waiting_event *events;
+    struct vkd3d_waiting_event
+    {
+        UINT64 value;
+        HANDLE event;
+    } *events;
     size_t events_size;
     size_t event_count;