VulkanBarriers.h

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// Copyright Epic Games, Inc. All Rights Reserved..
 
#pragma once
 
#include "Containers/Array.h"
#include "RHIPipeline.h"
#include "VulkanResources.h"
#include "VulkanSynchronization.h"
#include "VulkanThirdParty.h"
 
class FVulkanCommandBuffer;
 
struct FVulkanPipelineBarrier
{
    FVulkanPipelineBarrier() = default;
 
    using MemoryBarrierArrayType = TArray<VkMemoryBarrier2, TInlineAllocator<1>>;
    using ImageBarrierArrayType = TArray<VkImageMemoryBarrier2, TInlineAllocator<2>>;
    using BufferBarrierArrayType = TArray<VkBufferMemoryBarrier2>;
 
    MemoryBarrierArrayType MemoryBarriers;
    ImageBarrierArrayType ImageBarriers;
    BufferBarrierArrayType BufferBarriers;
 
    void AddMemoryBarrier(VkAccessFlags SrcAccessFlags, VkAccessFlags DstAccessFlags, VkPipelineStageFlags SrcStageMask, VkPipelineStageFlags DstStageMask);
    void AddFullImageLayoutTransition(const FVulkanTexture& Texture, VkImageLayout SrcLayout, VkImageLayout DstLayout);
    void AddImageLayoutTransition(VkImage Image, VkImageLayout SrcLayout, VkImageLayout DstLayout, const VkImageSubresourceRange& SubresourceRange);
    void AddImageAccessTransition(const FVulkanTexture& Surface, ERHIAccess SrcAccess, ERHIAccess DstAccess, const VkImageSubresourceRange& SubresourceRange, VkImageLayout& InOutLayout);
    void Execute(VkCommandBuffer CmdBuffer);
    void Execute(FVulkanCommandBuffer* CmdBuffer);
 
    static VkImageSubresourceRange MakeSubresourceRange(VkImageAspectFlags AspectMask, uint32 FirstMip = 0, uint32 NumMips = VK_REMAINING_MIP_LEVELS, uint32 FirstLayer = 0, uint32 NumLayers = VK_REMAINING_ARRAY_LAYERS);
 
    // Predetermined layouts for given RHIAccess
    static VkImageLayout GetDefaultLayout(const FVulkanTexture& VulkanTexture, ERHIAccess DesiredAccess);
    static VkImageLayout GetDepthOrStencilLayout(ERHIAccess Access);
};
 
struct FVulkanTransitionData
{
    ERHIPipeline SrcPipelines, DstPipelines;
    FVulkanSemaphore* Semaphore = nullptr;  // used for cross queue
    VkEvent EventHandle = VK_NULL_HANDLE;  // used for split barriers
    TArray<FRHITransitionInfo> TransitionInfos;
};