[PATCH vkd3d 3/6] vkd3d: Remember the last fence we waited for.

[Józef Kucia]

From: Józef Kucia

An application uses the following pattern:

Wait(queue, fence, value);
ExecuteCommandLists(queue, count, lists);
Wait(queue, fence, value);
ExecuteCommandLists(queue, count2, lists2);

In this case, we don't need to wait for the fence again.

Signed-off-by: Józef Kucia 
---
 libs/vkd3d/command.c       | 41 ++++++++++++++++++++++++++------------
 libs/vkd3d/vkd3d_private.h |  3 +++
 2 files changed, 31 insertions(+), 13 deletions(-)

diff --git a/libs/vkd3d/command.c b/libs/vkd3d/command.c
index 07de716faa04..606c5bb78a50 100644
--- a/libs/vkd3d/command.c
+++ b/libs/vkd3d/command.c
@@ -5471,11 +5471,11 @@ static HRESULT STDMETHODCALLTYPE d3d12_command_queue_Wait(ID3D12CommandQueue *if
     struct d3d12_command_queue *command_queue = impl_from_ID3D12CommandQueue(iface);
     const struct vkd3d_vk_device_procs *vk_procs;
     struct vkd3d_signaled_semaphore *semaphore;
-    VkQueue vk_queue = VK_NULL_HANDLE;
     uint64_t completed_value = 0;
     struct vkd3d_queue *queue;
     struct d3d12_fence *fence;
     VkSubmitInfo submit_info;
+    VkQueue vk_queue;
     VkResult vr;
     HRESULT hr;

@@ -5486,18 +5486,34 @@ static HRESULT STDMETHODCALLTYPE d3d12_command_queue_Wait(ID3D12CommandQueue *if

fence = unsafe_impl_from_ID3D12Fence(fence_iface);

-    if (!(semaphore = d3d12_fence_acquire_vk_semaphore(fence, value, &completed_value)))
+    semaphore = d3d12_fence_acquire_vk_semaphore(fence, value, &completed_value);
+    if (!semaphore && completed_value >= value)
+    {
+        /* We don't get a Vulkan semaphore if the fence was signaled on CPU. */
+        TRACE("Already signaled %p, value %#"PRIx64".\n", fence, completed_value);
+        return S_OK;
+    }
+
+    if (!(vk_queue = vkd3d_queue_acquire(queue)))
+    {
+        ERR("Failed to acquire queue %p.\n", queue);
+        hr = E_FAIL;
+        goto fail;
+    }
+
+    if (!semaphore)
     {
-        if (completed_value >= value)
+        if (command_queue->last_waited_fence == fence && command_queue->last_waited_fence_value >= value)
         {
-            TRACE("Already signaled %p, value %#"PRIx64".\n", fence, completed_value);
+            WARN("Already waited on fence %p, value %#"PRIx64".\n", fence, value);
         }
         else
         {
-            FIXME("Failed to acquire Vulkan semaphore for fence %p, value %#"PRIx64", completed value %#"PRIx64".\n",
-                    fence, value, completed_value);
+            FIXME("Failed to acquire Vulkan semaphore for fence %p, value %#"PRIx64
+                    ", completed value %#"PRIx64".\n", fence, value, completed_value);
         }

+        vkd3d_queue_release(queue);
         return S_OK;
     }

@@ -5511,13 +5527,6 @@ static HRESULT STDMETHODCALLTYPE d3d12_command_queue_Wait(ID3D12CommandQueue *if
     submit_info.signalSemaphoreCount = 0;
     submit_info.pSignalSemaphores = NULL;

-    if (!(vk_queue = vkd3d_queue_acquire(queue)))
-    {
-        ERR("Failed to acquire queue %p.\n", queue);
-        hr = E_FAIL;
-        goto fail;
-    }
-
     if (!vkd3d_array_reserve((void **)&queue->semaphores, &queue->semaphores_size,
             queue->semaphore_count + 1, sizeof(*queue->semaphores)))
     {
@@ -5532,6 +5541,9 @@ static HRESULT STDMETHODCALLTYPE d3d12_command_queue_Wait(ID3D12CommandQueue *if
         queue->semaphores[queue->semaphore_count].vk_semaphore = semaphore->vk_semaphore;
         queue->semaphores[queue->semaphore_count].sequence_number = queue->submitted_sequence_number + 1;
         ++queue->semaphore_count;
+
+        command_queue->last_waited_fence = fence;
+        command_queue->last_waited_fence_value = value;
     }

vkd3d_queue_release(queue);
@@ -5632,6 +5644,9 @@ static HRESULT d3d12_command_queue_init(struct d3d12_command_queue *queue,
     if (!(queue->vkd3d_queue = d3d12_device_get_vkd3d_queue(device, desc->Type)))
         return E_NOTIMPL;

+    queue->last_waited_fence = NULL;
+    queue->last_waited_fence_value = 0;
+
     if (desc->Priority == D3D12_COMMAND_QUEUE_PRIORITY_GLOBAL_REALTIME)
     {
         FIXME("Global realtime priority is not implemented.\n");
diff --git a/libs/vkd3d/vkd3d_private.h b/libs/vkd3d/vkd3d_private.h
index b5beffaf5d5e..402ac0aaa791 100644
--- a/libs/vkd3d/vkd3d_private.h
+++ b/libs/vkd3d/vkd3d_private.h
@@ -924,6 +924,9 @@ struct d3d12_command_queue

struct vkd3d_queue *vkd3d_queue;

+    const struct d3d12_fence *last_waited_fence;
+    uint64_t last_waited_fence_value;
+
     struct d3d12_device *device;

struct vkd3d_private_store private_store;