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-rw-r--r--src/video_core/renderer_vulkan/vk_resource_manager.cpp68
-rw-r--r--src/video_core/renderer_vulkan/vk_resource_manager.h63
2 files changed, 131 insertions, 0 deletions
diff --git a/src/video_core/renderer_vulkan/vk_resource_manager.cpp b/src/video_core/renderer_vulkan/vk_resource_manager.cpp
index 46563748e..1875bcf54 100644
--- a/src/video_core/renderer_vulkan/vk_resource_manager.cpp
+++ b/src/video_core/renderer_vulkan/vk_resource_manager.cpp
@@ -2,7 +2,9 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
+#include <algorithm>
#include "video_core/renderer_vulkan/declarations.h"
+#include "video_core/renderer_vulkan/vk_device.h"
#include "video_core/renderer_vulkan/vk_resource_manager.h"
namespace Vulkan {
@@ -11,4 +13,70 @@ VKResource::VKResource() = default;
VKResource::~VKResource() = default;
+VKFence::VKFence(const VKDevice& device, UniqueFence handle)
+ : device{device}, handle{std::move(handle)} {}
+
+VKFence::~VKFence() = default;
+
+void VKFence::Wait() {
+ const auto dev = device.GetLogical();
+ const auto& dld = device.GetDispatchLoader();
+ dev.waitForFences({*handle}, true, std::numeric_limits<u64>::max(), dld);
+}
+
+void VKFence::Release() {
+ is_owned = false;
+}
+
+void VKFence::Commit() {
+ is_owned = true;
+ is_used = true;
+}
+
+bool VKFence::Tick(bool gpu_wait, bool owner_wait) {
+ if (!is_used) {
+ // If a fence is not used it's always free.
+ return true;
+ }
+ if (is_owned && !owner_wait) {
+ // The fence is still being owned (Release has not been called) and ownership wait has
+ // not been asked.
+ return false;
+ }
+
+ const auto dev = device.GetLogical();
+ const auto& dld = device.GetDispatchLoader();
+ if (gpu_wait) {
+ // Wait for the fence if it has been requested.
+ dev.waitForFences({*handle}, true, std::numeric_limits<u64>::max(), dld);
+ } else {
+ if (dev.getFenceStatus(*handle, dld) != vk::Result::eSuccess) {
+ // Vulkan fence is not ready, not much it can do here
+ return false;
+ }
+ }
+
+ // Broadcast resources their free state.
+ for (auto* resource : protected_resources) {
+ resource->OnFenceRemoval(this);
+ }
+ protected_resources.clear();
+
+ // Prepare fence for reusage.
+ dev.resetFences({*handle}, dld);
+ is_used = false;
+ return true;
+}
+
+void VKFence::Protect(VKResource* resource) {
+ protected_resources.push_back(resource);
+}
+
+void VKFence::Unprotect(const VKResource* resource) {
+ const auto it = std::find(protected_resources.begin(), protected_resources.end(), resource);
+ if (it != protected_resources.end()) {
+ protected_resources.erase(it);
+ }
+}
+
} // namespace Vulkan
diff --git a/src/video_core/renderer_vulkan/vk_resource_manager.h b/src/video_core/renderer_vulkan/vk_resource_manager.h
index 21a53abcd..aa52007c8 100644
--- a/src/video_core/renderer_vulkan/vk_resource_manager.h
+++ b/src/video_core/renderer_vulkan/vk_resource_manager.h
@@ -4,11 +4,14 @@
#pragma once
+#include <vector>
#include "video_core/renderer_vulkan/declarations.h"
namespace Vulkan {
+class VKDevice;
class VKFence;
+class VKResourceManager;
/// Interface for a Vulkan resource
class VKResource {
@@ -23,4 +26,64 @@ public:
virtual void OnFenceRemoval(VKFence* signaling_fence) = 0;
};
+/**
+ * Fences take ownership of objects, protecting them from GPU-side or driver-side concurrent access.
+ * They must be commited from the resource manager. Their usage flow is: commit the fence from the
+ * resource manager, protect resources with it and use them, send the fence to an execution queue
+ * and Wait for it if needed and then call Release. Used resources will automatically be signaled
+ * when they are free to be reused.
+ * @brief Protects resources for concurrent usage and signals its release.
+ */
+class VKFence {
+ friend class VKResourceManager;
+
+public:
+ explicit VKFence(const VKDevice& device, UniqueFence handle);
+ ~VKFence();
+
+ /**
+ * Waits for the fence to be signaled.
+ * @warning You must have ownership of the fence and it has to be previously sent to a queue to
+ * call this function.
+ */
+ void Wait();
+
+ /**
+ * Releases ownership of the fence. Pass after it has been sent to an execution queue.
+ * Unmanaged usage of the fence after the call will result in undefined behavior because it may
+ * be being used for something else.
+ */
+ void Release();
+
+ /// Protects a resource with this fence.
+ void Protect(VKResource* resource);
+
+ /// Removes protection for a resource.
+ void Unprotect(const VKResource* resource);
+
+ /// Retreives the fence.
+ operator vk::Fence() const {
+ return *handle;
+ }
+
+private:
+ /// Take ownership of the fence.
+ void Commit();
+
+ /**
+ * Updates the fence status.
+ * @warning Waiting for the owner might soft lock the execution.
+ * @param gpu_wait Wait for the fence to be signaled by the driver.
+ * @param owner_wait Wait for the owner to signal its freedom.
+ * @returns True if the fence is free. Waiting for gpu and owner will always return true.
+ */
+ bool Tick(bool gpu_wait, bool owner_wait);
+
+ const VKDevice& device; ///< Device handler
+ UniqueFence handle; ///< Vulkan fence
+ std::vector<VKResource*> protected_resources; ///< List of resources protected by this fence
+ bool is_owned = false; ///< The fence has been commited but not released yet.
+ bool is_used = false; ///< The fence has been commited but it has not been checked to be free.
+};
+
} // namespace Vulkan