81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
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#pragma once
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#if GRAPHICS_API_VULKAN
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#include "Engine/Graphics/GPUTimerQuery.h"
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#include "GPUDeviceVulkan.h"
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/// <summary>
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/// GPU timer query object for Vulkan backend.
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/// </summary>
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class GPUTimerQueryVulkan : public GPUResourceVulkan<GPUTimerQuery>
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{
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private:
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struct Query
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{
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BufferedQueryPoolVulkan* Pool;
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uint32 Index;
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uint64 Result;
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};
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struct QueryPair
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{
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Query Begin;
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Query End;
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};
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bool _hasResult = false;
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bool _endCalled = false;
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bool _interrupted = false;
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float _timeDelta = 0.0f;
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int32 _queryIndex;
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Array<QueryPair, InlinedAllocation<8>> _queries;
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public:
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/// <summary>
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/// Initializes a new instance of the <see cref="GPUTimerQueryVulkan"/> class.
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/// </summary>
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/// <param name="device">The graphics device.</param>
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GPUTimerQueryVulkan(GPUDeviceVulkan* device);
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public:
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/// <summary>
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/// Interrupts an in-progress query, allowing the command buffer to submitted. Interrupted queries must be resumed using Resume().
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/// </summary>
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/// <param name="cmdBuffer">The GPU commands buffer.</param>
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void Interrupt(CmdBufferVulkan* cmdBuffer);
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/// <summary>
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/// Resumes an interrupted query, restoring it back to its original in-progress state.
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/// </summary>
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/// <param name="cmdBuffer">The GPU commands buffer.</param>
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void Resume(CmdBufferVulkan* cmdBuffer);
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private:
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bool GetResult(Query& query);
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void WriteTimestamp(CmdBufferVulkan* cmdBuffer, Query& query, VkPipelineStageFlagBits stage) const;
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bool TryGetResult();
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bool UseQueries();
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public:
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// [GPUTimerQuery]
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void Begin() override;
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void End() override;
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bool HasResult() override;
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float GetResult() override;
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protected:
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// [GPUResourceVulkan]
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void OnReleaseGPU() override;
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};
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#endif
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