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microsoft: add resource state manager utility code

Browse source 
The code originates from this repository:
https://github.com/microsoft/D3D12TranslationLayer

It will be used in the next commit.

Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7477>
This commit is contained in:
BillKristiansen 2020-05-27 17:23:16 +02:00 • committed by Marge Bot
parent b9c61379ab
commit 3f31cf64e4
4 changed files with 725 additions and 0 deletions
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1
src/microsoft/meson.build
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@ -20,3 +20,4 @@
# IN THE SOFTWARE.
subdir('compiler')
subdir('resource_state_manager')

398
src/microsoft/resource_state_manager/D3D12ResourceState.cpp Normal file
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/*
* Copyright © Microsoft Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "D3D12ResourceState.h"
//----------------------------------------------------------------------------------------------------------------------------------
D3D12_RESOURCE_STATES CDesiredResourceState::GetSubresourceState(UINT SubresourceIndex) const
{
if (AreAllSubresourcesSame())
{
SubresourceIndex = 0;
}
return m_spSubresourceStates[SubresourceIndex];
}
//----------------------------------------------------------------------------------------------------------------------------------
void CDesiredResourceState::UpdateSubresourceState(unsigned SubresourceIndex, D3D12_RESOURCE_STATES state)
{
assert(SubresourceIndex < m_spSubresourceStates.size());
if (m_spSubresourceStates[SubresourceIndex] == UNKNOWN_RESOURCE_STATE ||
state == UNKNOWN_RESOURCE_STATE ||
IsD3D12WriteState(state))
{
m_spSubresourceStates[SubresourceIndex] = state;
}
else
{
// Accumulate read state state bits
m_spSubresourceStates[SubresourceIndex] |= state;
}
}
//----------------------------------------------------------------------------------------------------------------------------------
void CDesiredResourceState::SetResourceState(D3D12_RESOURCE_STATES state)
{
m_bAllSubresourcesSame = true;
UpdateSubresourceState(0, state);
}
//----------------------------------------------------------------------------------------------------------------------------------
void CDesiredResourceState::SetSubresourceState(UINT SubresourceIndex, D3D12_RESOURCE_STATES state)
{
if (m_bAllSubresourcesSame && m_spSubresourceStates.size() > 1)
{
std::fill(m_spSubresourceStates.begin() + 1, m_spSubresourceStates.end(), m_spSubresourceStates[0]);
m_bAllSubresourcesSame = false;
}
if (m_spSubresourceStates.size() == 1)
{
SubresourceIndex = 0;
}
UpdateSubresourceState(SubresourceIndex, state);
}
//----------------------------------------------------------------------------------------------------------------------------------
void CDesiredResourceState::Reset()
{
SetResourceState(UNKNOWN_RESOURCE_STATE);
}
//----------------------------------------------------------------------------------------------------------------------------------
void CCurrentResourceState::ConvertToSubresourceTracking()
{
if (m_bAllSubresourcesSame && m_spLogicalState.size() > 1)
{
std::fill(m_spLogicalState.begin() + 1, m_spLogicalState.end(), m_spLogicalState[0]);
m_bAllSubresourcesSame = false;
}
}
//----------------------------------------------------------------------------------------------------------------------------------
CCurrentResourceState::CCurrentResourceState(UINT SubresourceCount, bool bSimultaneousAccess)
: m_bSimultaneousAccess(bSimultaneousAccess)
, m_spLogicalState(SubresourceCount)
{
m_spLogicalState[0] = LogicalState{};
}
//----------------------------------------------------------------------------------------------------------------------------------
D3D12_RESOURCE_STATES CCurrentResourceState::StateIfPromoted(D3D12_RESOURCE_STATES State, UINT SubresourceIndex)
{
D3D12_RESOURCE_STATES Result = D3D12_RESOURCE_STATE_COMMON;
if (m_bSimultaneousAccess || !!(State & (
D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE |
D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE |
D3D12_RESOURCE_STATE_COPY_SOURCE |
D3D12_RESOURCE_STATE_COPY_DEST)))
{
auto CurState = GetLogicalSubresourceState(SubresourceIndex);
// If the current state is COMMON...
if(CurState.State == D3D12_RESOURCE_STATE_COMMON)
{
// ...then promotion is allowed
Result = State;
}
// If the current state is a read state resulting from previous promotion...
else if(CurState.IsPromotedState && !!(CurState.State & D3D12_RESOURCE_STATE_GENERIC_READ))
{
// ...then (accumulated) promotion is allowed
Result = State |= CurState.State;
}
}
return Result;
}
//----------------------------------------------------------------------------------------------------------------------------------
void CCurrentResourceState::SetLogicalResourceState(LogicalState const& State)
{
m_bAllSubresourcesSame = true;
m_spLogicalState[0] = State;
}
//----------------------------------------------------------------------------------------------------------------------------------
void CCurrentResourceState::SetLogicalSubresourceState(UINT SubresourceIndex, LogicalState const& State)
{
ConvertToSubresourceTracking();
m_spLogicalState[SubresourceIndex] = State;
}
//----------------------------------------------------------------------------------------------------------------------------------
auto CCurrentResourceState::GetLogicalSubresourceState(UINT SubresourceIndex) const -> LogicalState const&
{
if (AreAllSubresourcesSame())
{
SubresourceIndex = 0;
}
return m_spLogicalState[SubresourceIndex];
}
//----------------------------------------------------------------------------------------------------------------------------------
void CCurrentResourceState::Reset()
{
m_bAllSubresourcesSame = true;
m_spLogicalState[0] = LogicalState{};
}
//----------------------------------------------------------------------------------------------------------------------------------
ResourceStateManager::ResourceStateManager()
{
list_inithead(&m_TransitionListHead);
// Reserve some space in these vectors upfront. Values are arbitrary.
m_vResourceBarriers.reserve(50);
}
//----------------------------------------------------------------------------------------------------------------------------------
void ResourceStateManager::TransitionResource(TransitionableResourceState& Resource,
D3D12_RESOURCE_STATES state)
{
Resource.m_DesiredState.SetResourceState(state);
if (!Resource.IsTransitionPending())
{
list_add(&Resource.m_TransitionListEntry, &m_TransitionListHead);
}
}
//----------------------------------------------------------------------------------------------------------------------------------
void ResourceStateManager::TransitionSubresource(TransitionableResourceState& Resource,
UINT SubresourceIndex,
D3D12_RESOURCE_STATES state)
{
Resource.m_DesiredState.SetSubresourceState(SubresourceIndex, state);
if (!Resource.IsTransitionPending())
{
list_add(&Resource.m_TransitionListEntry, &m_TransitionListHead);
}
}
//----------------------------------------------------------------------------------------------------------------------------------
void ResourceStateManager::ApplyResourceTransitionsPreamble()
{
m_vResourceBarriers.clear();
}
//----------------------------------------------------------------------------------------------------------------------------------
/*static*/ bool ResourceStateManager::TransitionRequired(D3D12_RESOURCE_STATES CurrentState, D3D12_RESOURCE_STATES& DestinationState)
{
// An exact match never needs a transition.
if (CurrentState == DestinationState)
{
return false;
}
if (
CurrentState == D3D12_RESOURCE_STATE_COMMON ||
DestinationState == D3D12_RESOURCE_STATE_COMMON)
{
return true;
}
// Current state already contains the destination state, we're good.
if ((CurrentState & DestinationState) == DestinationState)
{
DestinationState = CurrentState;
return false;
}
// If the transition involves a write state, then the destination should just be the requested destination.
// Otherwise, accumulate read states to minimize future transitions (by triggering the above condition).
if (!IsD3D12WriteState(DestinationState) && !IsD3D12WriteState(CurrentState))
{
DestinationState |= CurrentState;
}
return true;
}
//----------------------------------------------------------------------------------------------------------------------------------
void ResourceStateManager::AddCurrentStateUpdate(TransitionableResourceState& Resource,
CCurrentResourceState& CurrentState,
UINT SubresourceIndex,
const CCurrentResourceState::LogicalState &NewLogicalState)
{
if (SubresourceIndex == D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES)
{
CurrentState.SetLogicalResourceState(NewLogicalState);
}
else
{
CurrentState.SetLogicalSubresourceState(SubresourceIndex, NewLogicalState);
}
}
//----------------------------------------------------------------------------------------------------------------------------------
void ResourceStateManager::ProcessTransitioningResource(ID3D12Resource* pTransitioningResource,
TransitionableResourceState& TransitionableResourceState,
CCurrentResourceState& CurrentState,
UINT NumTotalSubresources,
UINT64 ExecutionId)
{
// Figure out the set of subresources that are transitioning
auto& DestinationState = TransitionableResourceState.m_DesiredState;
bool bAllSubresourcesAtOnce = CurrentState.AreAllSubresourcesSame() && DestinationState.AreAllSubresourcesSame();
D3D12_RESOURCE_BARRIER TransitionDesc;
ZeroMemory(&TransitionDesc, sizeof(TransitionDesc));
TransitionDesc.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
TransitionDesc.Transition.pResource = pTransitioningResource;
UINT numSubresources = bAllSubresourcesAtOnce ? 1 : NumTotalSubresources;
for (UINT i = 0; i < numSubresources; ++i)
{
D3D12_RESOURCE_STATES SubresourceDestinationState = DestinationState.GetSubresourceState(i);
TransitionDesc.Transition.Subresource = bAllSubresourcesAtOnce ? D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES : i;
// Is this subresource currently being used, or is it just being iterated over?
D3D12_RESOURCE_STATES after = DestinationState.GetSubresourceState(i);
if (after == UNKNOWN_RESOURCE_STATE)
{
// This subresource doesn't have any transition requested - move on to the next.
continue;
}
ProcessTransitioningSubresourceExplicit(
CurrentState,
i,
SubresourceDestinationState,
after,
TransitionableResourceState,
TransitionDesc,
ExecutionId); // throw( bad_alloc )
}
// Update destination states.
// Coalesce destination state to ensure that it's set for the entire resource.
DestinationState.SetResourceState(UNKNOWN_RESOURCE_STATE);
}
//----------------------------------------------------------------------------------------------------------------------------------
void ResourceStateManager::ProcessTransitioningSubresourceExplicit(
CCurrentResourceState& CurrentState,
UINT SubresourceIndex,
D3D12_RESOURCE_STATES state,
D3D12_RESOURCE_STATES after,
TransitionableResourceState& TransitionableResourceState,
D3D12_RESOURCE_BARRIER& TransitionDesc,
UINT64 ExecutionId)
{
// Simultaneous access resources currently in the COMMON
// state can be implicitly promoted to any state other state.
// Any non-simultaneous-access resources currently in the
// COMMON state can still be implicitly promoted to SRV,
// NON_PS_SRV, COPY_SRC, or COPY_DEST.
CCurrentResourceState::LogicalState CurrentLogicalState = CurrentState.GetLogicalSubresourceState(SubresourceIndex);
// If the last time this logical state was set was in a different
// execution period and is decayable then decay the current state
// to COMMON
if(ExecutionId != CurrentLogicalState.ExecutionId && CurrentLogicalState.MayDecay)
{
CurrentLogicalState.State = D3D12_RESOURCE_STATE_COMMON;
CurrentLogicalState.IsPromotedState = false;
}
bool MayDecay = false;
bool IsPromotion = false;
// If not promotable then StateIfPromoted will be D3D12_RESOURCE_STATE_COMMON
auto StateIfPromoted = CurrentState.StateIfPromoted(after, SubresourceIndex);
if ( D3D12_RESOURCE_STATE_COMMON == StateIfPromoted )
{
if (TransitionRequired(CurrentLogicalState.State, /*inout*/ after))
{
// Insert a single concrete barrier (for non-simultaneous access resources).
TransitionDesc.Transition.StateBefore = D3D12_RESOURCE_STATES(CurrentLogicalState.State);
TransitionDesc.Transition.StateAfter = D3D12_RESOURCE_STATES(after);
assert(TransitionDesc.Transition.StateBefore != TransitionDesc.Transition.StateAfter);
m_vResourceBarriers.push_back(TransitionDesc); // throw( bad_alloc )
MayDecay = CurrentState.SupportsSimultaneousAccess() && !IsD3D12WriteState(after);
IsPromotion = false;
}
}
else
{
// Handle identity state transition
if(after != StateIfPromoted)
{
after = StateIfPromoted;
MayDecay = !IsD3D12WriteState(after);
IsPromotion = true;
}
}
CCurrentResourceState::LogicalState NewLogicalState{after, ExecutionId, IsPromotion, MayDecay};
AddCurrentStateUpdate(TransitionableResourceState,
CurrentState,
TransitionDesc.Transition.Subresource,
NewLogicalState);
}
//----------------------------------------------------------------------------------------------------------------------------------
void ResourceStateManager::SubmitResourceTransitions(ID3D12GraphicsCommandList *pCommandList)
{
// Submit any pending barriers on source command lists that are not the destination.
if (!m_vResourceBarriers.empty())
{
pCommandList->ResourceBarrier((UINT)m_vResourceBarriers.size(), m_vResourceBarriers.data());
}
}
//----------------------------------------------------------------------------------------------------------------------------------
void ResourceStateManager::TransitionResource(TransitionableResourceState* pResource, D3D12_RESOURCE_STATES State)
{
ResourceStateManager::TransitionResource(*pResource, State);
}
//----------------------------------------------------------------------------------------------------------------------------------
void ResourceStateManager::TransitionSubresource(TransitionableResourceState* pResource, UINT SubresourceIndex, D3D12_RESOURCE_STATES State)
{
ResourceStateManager::TransitionSubresource(*pResource, SubresourceIndex, State);
}
//----------------------------------------------------------------------------------------------------------------------------------
void ResourceStateManager::ApplyAllResourceTransitions(ID3D12GraphicsCommandList *pCommandList, UINT64 ExecutionId)
{
ApplyResourceTransitionsPreamble();
ForEachTransitioningResource([=](TransitionableResourceState& ResourceBase)
{
TransitionableResourceState& CurResource = static_cast<TransitionableResourceState&>(ResourceBase);
ID3D12Resource *pResource = CurResource.GetD3D12Resource();
ProcessTransitioningResource(
pResource,
CurResource,
CurResource.GetCurrentState(),
CurResource.NumSubresources(),
ExecutionId);
});
SubmitResourceTransitions(pCommandList);
}

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src/microsoft/resource_state_manager/D3D12ResourceState.h Normal file
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/*
* Copyright © Microsoft Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef D3D12_RESOURCE_STATE_H
#define D3D12_RESOURCE_STATE_H
#include <vector>
#include <assert.h>
#include <d3d12.h>
#include "util/list.h"
#define UNKNOWN_RESOURCE_STATE (D3D12_RESOURCE_STATES)0x8000u
#define RESOURCE_STATE_VALID_BITS 0x2f3fff
#define RESOURCE_STATE_VALID_INTERNAL_BITS 0x2fffff
constexpr D3D12_RESOURCE_STATES RESOURCE_STATE_ALL_WRITE_BITS =
D3D12_RESOURCE_STATE_RENDER_TARGET |
D3D12_RESOURCE_STATE_UNORDERED_ACCESS |
D3D12_RESOURCE_STATE_DEPTH_WRITE |
D3D12_RESOURCE_STATE_STREAM_OUT |
D3D12_RESOURCE_STATE_COPY_DEST |
D3D12_RESOURCE_STATE_RESOLVE_DEST |
D3D12_RESOURCE_STATE_VIDEO_DECODE_WRITE |
D3D12_RESOURCE_STATE_VIDEO_PROCESS_WRITE;
//---------------------------------------------------------------------------------------------------------------------------------
inline bool IsD3D12WriteState(UINT State)
{
return (State & RESOURCE_STATE_ALL_WRITE_BITS) != 0;
}
inline bool SupportsSimultaneousAccess(const D3D12_RESOURCE_DESC &desc)
{
return D3D12_RESOURCE_DIMENSION_BUFFER == desc.Dimension ||
!!(desc.Flags & D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS);
}
//==================================================================================================================================
// CDesiredResourceState
// Stores the current desired state of either an entire resource, or each subresource.
//==================================================================================================================================
class CDesiredResourceState
{
private:
bool m_bAllSubresourcesSame = true;
std::vector<D3D12_RESOURCE_STATES> m_spSubresourceStates;
public:
CDesiredResourceState(UINT SubresourceCount) :
m_spSubresourceStates(SubresourceCount)
{
}
bool AreAllSubresourcesSame() const { return m_bAllSubresourcesSame; }
D3D12_RESOURCE_STATES GetSubresourceState(UINT SubresourceIndex) const;
void SetResourceState(D3D12_RESOURCE_STATES state);
void SetSubresourceState(UINT SubresourceIndex, D3D12_RESOURCE_STATES state);
void Reset();
private:
void UpdateSubresourceState(unsigned SubresourceIndex, D3D12_RESOURCE_STATES state);
};
//==================================================================================================================================
// CCurrentResourceState
// Stores the current state of either an entire resource, or each subresource.
// Current state can either be shared read across multiple queues, or exclusive on a single queue.
//==================================================================================================================================
class CCurrentResourceState
{
public:
struct LogicalState
{
D3D12_RESOURCE_STATES State = D3D12_RESOURCE_STATE_COMMON;
UINT64 ExecutionId = 0;
bool IsPromotedState = false;
bool MayDecay = false;
};
private:
const bool m_bSimultaneousAccess;
bool m_bAllSubresourcesSame = true;
std::vector<LogicalState> m_spLogicalState;
void ConvertToSubresourceTracking();
public:
CCurrentResourceState(UINT SubresourceCount, bool bSimultaneousAccess);
bool SupportsSimultaneousAccess() const { return m_bSimultaneousAccess; }
// Returns the destination state if the current state is promotable.
// Returns D3D12_RESOURCE_STATE_COMMON if not.
D3D12_RESOURCE_STATES StateIfPromoted(D3D12_RESOURCE_STATES state, UINT SubresourceIndex);
bool AreAllSubresourcesSame() const { return m_bAllSubresourcesSame; }
void SetLogicalResourceState(LogicalState const& State);
void SetLogicalSubresourceState(UINT SubresourceIndex, LogicalState const& State);
LogicalState const& GetLogicalSubresourceState(UINT SubresourceIndex) const;
void Reset();
};
//==================================================================================================================================
// TransitionableResourceState
// A base class that transitionable resources should inherit from.
//==================================================================================================================================
struct TransitionableResourceState
{
struct list_head m_TransitionListEntry;
CDesiredResourceState m_DesiredState;
TransitionableResourceState(ID3D12Resource *pResource, UINT TotalSubresources, bool SupportsSimultaneousAccess) :
m_DesiredState(TotalSubresources),
m_TotalSubresources(TotalSubresources),
m_currentState(TotalSubresources, SupportsSimultaneousAccess),
m_pResource(pResource)
{
list_inithead(&m_TransitionListEntry);
}
~TransitionableResourceState()
{
if (IsTransitionPending())
{
list_del(&m_TransitionListEntry);
}
}
bool IsTransitionPending() const { return !list_is_empty(&m_TransitionListEntry); }
UINT NumSubresources() { return m_TotalSubresources; }
CCurrentResourceState& GetCurrentState() { return m_currentState; }
inline ID3D12Resource* GetD3D12Resource() const { return m_pResource; }
private:
unsigned m_TotalSubresources;
bool m_SupportsSimultaneousAccess;
CCurrentResourceState m_currentState;
ID3D12Resource* m_pResource;
};
//==================================================================================================================================
// ResourceStateManager
// The main business logic for handling resource transitions, including multi-queue sync and shared/exclusive state changes.
//
// Requesting a resource to transition simply updates destination state, and ensures it's in a list to be processed later.
//
// When processing ApplyAllResourceTransitions, we build up sets of vectors.
// There's a source one for each command list type, and a single one for the dest because we are applying
// the resource transitions for a single operation.
// There's also a vector for "tentative" barriers, which are merged into the destination vector if
// no flushing occurs as a result of submitting the final barrier operation.
// 99% of the time, there will only be the source being populated, but sometimes there will be a destination as well.
// If the source and dest of a transition require different types, we put a (source->COMMON) in the approriate source vector,
// and a (COMMON->dest) in the destination vector.
//
// Once all resources are processed, we:
// 1. Submit all source barriers, except ones belonging to the destination queue.
// 2. Flush all source command lists, except ones belonging to the destination queue.
// 3. Determine if the destination queue is going to be flushed.
// If so: Submit source barriers on that command list first, then flush it.
// If not: Accumulate source, dest, and tentative barriers so they can be sent to D3D12 in a single API call.
// 4. Insert waits on the destination queue - deferred waits, and waits for work on other queues.
// 5. Insert destination barriers.
//
// Only once all of this has been done do we update the "current" state of resources,
// because this is the only way that we know whether or not the destination queue has been flushed,
// and therefore, we can get the correct fence values to store in the subresources.
//==================================================================================================================================
class ResourceStateManager
{
protected:
struct list_head m_TransitionListHead;
std::vector<D3D12_RESOURCE_BARRIER> m_vResourceBarriers;
public:
ResourceStateManager();
~ResourceStateManager()
{
// All resources should be gone by this point, and each resource ensures it is no longer in this list.
assert(list_is_empty(&m_TransitionListHead));
}
// Call the D3D12 APIs to perform the resource barriers, command list submission, and command queue sync
// that was determined by previous calls to ProcessTransitioningResource.
void SubmitResourceTransitions(ID3D12GraphicsCommandList *pCommandList);
// Transition the entire resource to a particular destination state on a particular command list.
void TransitionResource(TransitionableResourceState* pResource,
D3D12_RESOURCE_STATES State);
// Transition a single subresource to a particular destination state.
void TransitionSubresource(TransitionableResourceState* pResource,
UINT SubresourceIndex,
D3D12_RESOURCE_STATES State);
// Submit all barriers and queue sync.
void ApplyAllResourceTransitions(ID3D12GraphicsCommandList *pCommandList, UINT64 ExecutionId);
private:
// These methods set the destination state of the resource/subresources and ensure it's in the transition list.
void TransitionResource(TransitionableResourceState& Resource,
D3D12_RESOURCE_STATES State);
void TransitionSubresource(TransitionableResourceState& Resource,
UINT SubresourceIndex,
D3D12_RESOURCE_STATES State);
// Clear out any state from previous iterations.
void ApplyResourceTransitionsPreamble();
// What to do with the resource, in the context of the transition list, after processing it.
enum class TransitionResult
{
// There are no more pending transitions that may be processed at a later time (i.e. draw time),
// so remove it from the pending transition list.
Remove,
// There are more transitions to be done, so keep it in the list.
Keep
};
// For every entry in the transition list, call a routine.
// This routine must return a TransitionResult which indicates what to do with the list.
template <typename TFunc>
void ForEachTransitioningResource(TFunc&& func)
{
list_for_each_entry_safe(TransitionableResourceState, pResource, &m_TransitionListHead, m_TransitionListEntry)
{
func(*pResource);
list_delinit(&pResource->m_TransitionListEntry);
}
}
// Updates vectors with the operations that should be applied to the requested resource.
// May update the destination state of the resource.
void ProcessTransitioningResource(ID3D12Resource* pTransitioningResource,
TransitionableResourceState& TransitionableResourceState,
CCurrentResourceState& CurrentState,
UINT NumTotalSubresources,
UINT64 ExecutionId);
private:
// Helpers
static bool TransitionRequired(D3D12_RESOURCE_STATES CurrentState, D3D12_RESOURCE_STATES& DestinationState);
void AddCurrentStateUpdate(TransitionableResourceState& Resource,
CCurrentResourceState& CurrentState,
UINT SubresourceIndex,
const CCurrentResourceState::LogicalState &NewLogicalState);
void ProcessTransitioningSubresourceExplicit(CCurrentResourceState& CurrentState,
UINT i,
D3D12_RESOURCE_STATES state,
D3D12_RESOURCE_STATES after,
TransitionableResourceState& TransitionableResourceState,
D3D12_RESOURCE_BARRIER& TransitionDesc,
UINT64 ExecutionId);
};
#endif // D3D12_RESOURCE_STATE_H

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# Copyright © Microsoft Corporation
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
files_libd3d12_resource_state = files(
'D3D12ResourceState.cpp',
)
libd3d12_resource_state = static_library(
'd3d12_resource_state',
files_libd3d12_resource_state,
gnu_symbol_visibility : 'hidden',
include_directories : [inc_include, inc_src, inc_mesa],
dependencies: [],
)
idep_libd3d12_resource_state = declare_dependency(
link_with : [libd3d12_resource_state],
include_directories : include_directories('.')
)