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[idd] transport: abstract LGMP implementation

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Introduce transport, frame, and control interfaces with an LGMP factory
backend.

Move LGMP and IVSHMEM implementation details under transport/lgmp and
expose direct frame-buffer memory through a neutral capability.
This commit is contained in:
Geoffrey McRae
2026-08-07 16:39:07 +10:00
parent 30a1383d5e
commit 6725133375
46 changed files with 1026 additions and 480 deletions
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24
idd/LGIdd/d3d/CD3D12Device.h
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@@ -26,8 +26,8 @@
#include <dxgi1_5.h>
#include <d3d12.h>
#include "transport/CIVSHMEM.h"
#include "d3d/CD3D12CommandQueue.h"
#include "transport/TransportTypes.h"
using namespace Microsoft::WRL;
@@ -37,8 +37,9 @@ struct CD3D12Device
LUID m_adapterLuid;
bool m_debug;
// static as this needs to persist if set
static bool m_indirectCopy;
// A failed direct heap can remove the device. Preserve the fallback for
// the replacement device so initialization does not retry forever.
static bool s_directHeapFailed;
ComPtr<ID3D12Debug6 > m_dxDebug;
ComPtr<ID3D12InfoQueue1> m_infoQueue;
@@ -47,12 +48,13 @@ struct CD3D12Device
ComPtr<IDXGIFactory5> m_factory;
ComPtr<IDXGIAdapter1> m_adapter;
ComPtr<ID3D12Device3> m_device;
ComPtr<ID3D12Heap > m_ivshmemHeap;
ComPtr<ID3D12Heap > m_transportHeap;
CD3D12CommandQueue m_copyQueue;
CD3D12CommandQueue m_computeQueue;
bool m_computeEnabled = false;
bool m_ivshmemTextureSupported = false;
bool m_computeEnabled = false;
bool m_indirectCopy = true;
bool m_directTextureSupported = false;
bool HeapTest();
@@ -67,8 +69,8 @@ struct CD3D12Device
SUCCESS
};
InitResult Init(CIVSHMEM &ivshmem, UINT64 &alignSize,
bool enableCompute);
InitResult Init(const DirectFrameBufferMemory& directMemory,
UINT64& alignSize, bool enableCompute);
void DeInit();
// Wait for all command queues to finish in-flight GPU work and run their
@@ -77,9 +79,9 @@ struct CD3D12Device
void WaitForIdle();
ComPtr<ID3D12Device3> GetDevice() { return m_device; }
ComPtr<ID3D12Heap > GetHeap() { return m_ivshmemHeap; }
bool IsIndirectCopy() { return m_indirectCopy; }
bool CanUseIVSHMEMTexture() { return m_ivshmemTextureSupported; }
ComPtr<ID3D12Heap > GetTransportHeap() { return m_transportHeap; }
bool IsIndirectCopy() const { return m_indirectCopy; }
bool CanUseDirectTexture() const { return m_directTextureSupported; }
CD3D12CommandSlot * GetCopySlot ();
CD3D12CommandSlot * GetCopySlot (unsigned frameIndex);