D3D12 增強型屏障

struct D3D12_BUFFER_BARRIER 
{ 
    D3D12_BARRIER_SYNC SyncBefore; 
    D3D12_BARRIER_SYNC SyncAfter; 
    D3D12_BARRIER_ACCESS AccessBefore; 
    D3D12_BARRIER_ACCESS AccessAfter; 
    ID3D12Resource *pResource;     
    UINT64 Offset;  // Must be 0 
    UINT64 Size;    // UINT64_MAX or size in bytes 
};  

struct D3D12 _GLOBAL_BARRIER 
{ 
    D3D12_BARRIER_SYNC SyncBefore; 
    D3D12_BARRIER_SYNC SyncAfter; 
    D3D12_BARRIER_ACCESS AccessBefore; 
    D3D12_BARRIER_ACCESS AccessAfter; 
}  

struct D3D12_TEXTURE_BARRIER 
{ 
    D3D12_BARRIER_SYNC SyncBefore; 
    D3D12_BARRIER_SYNC SyncAfter; 
    D3D12_BARRIER_ACCESS AccessBefore; 
    D3D12_BARRIER_ACCESS AccessAfter; 
    D3D12_BARRIER_LAYOUT LayoutBefore; 
    D3D12_BARRIER_LAYOUT LayoutAfter; 
    ID3D12Resource *pResource; 
    D3D12_BARRIER_SUBRESOURCE_RANGE Subresources; 
    D3D12_TEXTURE_BARRIER_FLAGS Flags; 
};

auto barrier = CD3DX12_RESOURCE_BARRIER::Transition(renderTarget,
    D3D12_RESOURCE_STATE_NON_PIXEL_SHADER_RESOURCE,
    D3D12_RESOURCE_STATE_RENDER_TARGET);
commandList->ResourceBarrier(1, &barrier);

auto barrierSubresourceRange = CD3DX12_BARRIER_SUBRESOURCE_RANGE();

auto textureBarrier = CD3DX12_TEXTURE_BARRIER (
    D3D12_BARRIER_SYNC_COMPUTE_SHADING,
    D3D12_BARRIER_SYNC_RENDER_TARGET,
    D3D12_BARRIER_ACCESS_SHADER_RESOURCE,
    D3D12_BARRIER_ACCESS_RENDER_TARGET,
    D3D12_BARRIER_LAYOUT_SHADER_RESOURCE,
    D3D12_BARRIER_LAYOUT_RENDER_TARGET,
    renderTarget,
    barrierSubresourceRange
);

auto barrierGroup = CD3DX12_BARRIER_GROUP(1, &textureBarrier);

auto bufferBarrier = CD3DX12_BUFFER_BARRIER (
    D3D12_BARRIER_SYNC_COMPUTE_SHADING,
    D3D12_BARRIER_SYNC_STREAM_OUTPUT,
    D3D12_BARRIER_ACCESS_SHADER_RESOURCE,
    D3D12_BARRIER_ACCESS_STREAM_OUTPUT,
    m_renderTarget.Get(),
    barrierSubresourceRange
);

auto barrier = CD3DX12_RESOURCE_BARRIER::UAV(texture0);
commandList->ResourceBarrier(1, &barrier);

auto barrierSubresourceRange = CD3DX12_BARRIER_SUBRESOURCE_RANGE();

auto barrier = CD3DX12_TEXTURE_BARRIER (
    D3D12_BARRIER_SYNC_CLEAR_UNORDERED_ACCESS_VIEW,
    D3D12_BARRIER_SYNC_COMPUTE_SHADING,
    D3D12_BARRIER_ACCESS_UNORDERED_ACCESS
    D3D12_BARRIER_ACCESS_SHADER_RESOURCE,
    D3D12_BARRIER_LAYOUT_UNORDERED_ACCESS,
    D3D12_BARRIER_LAYOUT_SHADER_RESOURCE,
    texture0,
    barrierSubresourceRange
);

auto barrierGroup = CD3DX12_BARRIER_GROUP(1, &barrier);

// Legacy resource barriers
{
    auto barrier = CD3DX12_RESOURCE_BARRIER::Transition(texture,
        D3D12_RESOURCE_STATE_UNORDERED_ACCESS,
        D3D12_RESOURCE_STATE_COPY_SOURCE
    );
    commandList->ResourceBarrier(1, &barrier);

    barrier = CD3DX12_RESOURCE_BARRIER::Transition(textureTmp,
        D3D12_RESOURCE_STATE_UNORDERED_ACCESS,
        D3D12_RESOURCE_STATE_COPY_DEST
    );
    commandList->ResourceBarrier(1, &barrier);
}

// Copy top left quarter to temp texture
{
    auto locationSrc = CD3DX12_TEXTURE_COPY_LOCATION(texture, 0);
    auto locationDst = CD3DX12_TEXTURE_COPY_LOCATION(textureTmp, 0);
    commandList->CopyTextureRegion(&locationDst, boxTopLeft.left,
        boxTopLeft.top, boxTopLeft.front, &locationSrc, &boxTopLeft);

    auto barrier = CD3DX12_RESOURCE_BARRIER::Transition(texture,
        D3D12_RESOURCE_STATE_COPY_SOURCE,
        D3D12_RESOURCE_STATE_COPY_DEST
    );
    commandList->ResourceBarrier(1, &barrier);

    barrier = CD3DX12_RESOURCE_BARRIER::Transition(textureTmp,
        D3D12_RESOURCE_STATE_COPY_DEST,
        D3D12_RESOURCE_STATE_COPY_SOURCE
    );
    commandList->ResourceBarrier(1, &barrier);
}

// Copy temp texture to bottom right quarter
{
    auto locationSrc = CD3DX12_TEXTURE_COPY_LOCATION(textureTmp, 0);
    auto locationDst = CD3DX12_TEXTURE_COPY_LOCATION(texture, 0);
    commandList->CopyTextureRegion(&locationDst, boxBottomRight.left,
        boxBottomRight.top, boxBottomRight.front, &locationSrc, &boxTopLeft);

    auto barrier = CD3DX12_RESOURCE_BARRIER::Transition(texture,
        D3D12_RESOURCE_STATE_COPY_DEST,
        D3D12_RESOURCE_STATE_UNORDERED_ACCESS
    );
    commandList->ResourceBarrier(1, &barrier);

    barrier = CD3DX12_RESOURCE_BARRIER::Transition(m_textureTmp.Get(),
        D3D12_RESOURCE_STATE_COPY_SOURCE,
        D3D12_RESOURCE_STATE_UNORDERED_ACCESS
    );
    commandList->ResourceBarrier(1, &barrier);
}

// Self copy top left quarter to bottom right quarter
auto locationSrc = CD3DX12_TEXTURE_COPY_LOCATION(texture, 0);
auto locationDst = CD3DX12_TEXTURE_COPY_LOCATION(texture, 0);

commandList->CopyTextureRegion(&locationDst, boxBottomRight.left,
    boxBottomRight.top, boxBottomRight.front, &locationSrc, &boxTopLeft);

typedef struct D3D12_RESOURCE_ALIASING_BARRIER 
{
    ID3D12Resource *pResourceBefore;
    ID3D12Resource *pResourceAfter;
} D3D12_RESOURCE_ALIASING_BARRIER;

// Transition pTex0 to COPY_SOURCE
auto tex0Barrier = CD3DX12_TEXTURE_BARRIER (
    D3D12_BARRIER_SYNC_RENDER_TARGET,
    D3D12_BARRIER_SYNC_COPY,
    D3D12_BARRIER_ACCESS_RENDER_TARGET,
    D3D12_BARRIER_ACCESS_COPY_SOURCE,
    D3D12_BARRIER_LAYOUT_RENDER_TARGET,
    D3D12_BARRIER_LAYOUT_DIRECT_QUEUE_COPY_SOURCE,
    pTex0,
    CD3DX12_BARRIER_SUBRESOURCE_RANGE(0, 1, 0, 1)
);

// Barrier to affect an aliasing transition from pTex0 to
// pTex1 with a layout of COPY_SOURCE
auto tex1Barrier = CD3DX12_TEXTURE_BARRIER (
    D3D12_BARRIER_SYNC_RENDER_TARGET,
    D3D12_BARRIER_SYNC_COPY,
    D3D12_BARRIER_ACCESS_NO_ACCESS,
    D3D12_BARRIER_ACCESS_COPY_SOURCE,
    D3D12_BARRIER_LAYOUT_UNDEFINED,
    D3D12_BARRIER_LAYOUT_COPY_SOURCE,
    pTex1,
    CD3DX12_BARRIER_SUBRESOURCE_RANGE(0, 1, 0, 1)
);

TextD3D12 ERROR: [0xA7900038] ID3D12CommandQueue(Graphics)::ExecuteCommandLists: Resource is being transitioned from legacy to enhanced barriers but is not in the state D3D12_RESOURCE_STATE_COMMON as is required.
Current State is: D3D12_RESOURCE_STATE_RENDER_TARGET
|  -Group Index:   0
|  -Barrier Index: 0
|  -Barrier
|   |  -SyncBefore:   D3D12_BARRIER_SYNC_RENDER_TARGET
|   |  -SyncAfter:    D3D12_BARRIER_SYNC_COMPUTE_SHADING
|   |  -AccessBefore: D3D12_BARRIER_ACCESS_RENDER_TARGET
|   |  -AccessAfter:  D3D12_BARRIER_ACCESS_UNORDERED_ACCESS
|   |  -LayoutBefore: D3D12_BARRIER_LAYOUT_RENDER_TARGET
|   |  -LayoutAfter:  D3D12_BARRIER_LAYOUT_UNORDERED_ACCESS
|   |  -pResource:    (0x0000000200200C00) "<untitled>"
|   |  -Subresources
|   |    |  -IndexOrFirstMipLevel: 4294967295
|   |    |  -NumMipLevels:         0
|   |    |  -FirstArraySlice:      0
|   |    |  -NumArraySlices:       0
|   |    |  -FirstPlane:           0
|   |    |  -NumPlanes:            0
|   |  -Flags: D3D12_TEXTURE_BARRIER_FLAG_NONE (0x00000000)