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[idd] driver: implement dirty rect tracking

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This commit is contained in:
Geoffrey McRae
2026-06-03 04:17:23 +10:00
committed by Geoffrey McRae
parent bd88a64a98
commit 929428c273
8 changed files with 140 additions and 34 deletions
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92
idd/LGIdd/CSwapChainProcessor.cpp
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@@ -88,7 +88,7 @@ void CSwapChainProcessor::SwapChainThreadCore()
if (IDD_IS_FUNCTION_AVAILABLE(IddCxSetRealtimeGPUPriority))
{
DEBUG_INFO("Using IddCxSetRealtimeGPUPriority");
IDARG_IN_SETREALTIMEGPUPRIORITY arg;
IDARG_IN_SETREALTIMEGPUPRIORITY arg = {0};
arg.pDevice = dxgiDevice.Get();
hr = IddCxSetRealtimeGPUPriority(m_hSwapChain, &arg);
if (FAILED(hr))
@@ -134,6 +134,7 @@ void CSwapChainProcessor::SwapChainThreadCore()
break;
UINT frameNumber = 0;
UINT dirtyRectCount = 0;
ComPtr<IDXGIResource> surface;
#if defined(IDDCX_VERSION_MAJOR) && defined(IDDCX_VERSION_MINOR) && \
@@ -151,6 +152,7 @@ void CSwapChainProcessor::SwapChainThreadCore()
if (SUCCEEDED(hr))
{
frameNumber = buffer.MetaData.PresentationFrameNumber;
dirtyRectCount = buffer.MetaData.DirtyRectCount;
surface = buffer.MetaData.pSurface;
}
}
@@ -163,6 +165,7 @@ void CSwapChainProcessor::SwapChainThreadCore()
if (SUCCEEDED(hr))
{
frameNumber = buffer.MetaData.PresentationFrameNumber;
dirtyRectCount = buffer.MetaData.DirtyRectCount;
surface = buffer.MetaData.pSurface;
}
}
@@ -190,7 +193,7 @@ void CSwapChainProcessor::SwapChainThreadCore()
if (frameNumber != lastFrameNumber)
{
lastFrameNumber = frameNumber;
SwapChainNewFrame(surface);
SwapChainNewFrame(surface, dirtyRectCount);
// report that all GPU processing for this frame has been queued
hr = IddCxSwapChainFinishedProcessingFrame(m_hSwapChain);
@@ -237,7 +240,35 @@ void CSwapChainProcessor::CompletionFunction(
sc->m_devContext->FinalizeFrameBuffer(fbRes->GetFrameIndex());
}
bool CSwapChainProcessor::SwapChainNewFrame(ComPtr<IDXGIResource> acquiredBuffer)
static bool IsFullDamage(const RECT * dirtyRects, unsigned nbDirtyRects,
const D3D12_RESOURCE_DESC& desc)
{
return nbDirtyRects == 0 ||
(nbDirtyRects == 1 &&
dirtyRects[0].left == 0 &&
dirtyRects[0].top == 0 &&
dirtyRects[0].right == (LONG)desc.Width &&
dirtyRects[0].bottom == (LONG)desc.Height);
}
static void CopyDirtyRect(ComPtr<ID3D12GraphicsCommandList> list,
D3D12_TEXTURE_COPY_LOCATION * dstLoc,
D3D12_TEXTURE_COPY_LOCATION * srcLoc,
const RECT& rect)
{
D3D12_BOX box = {};
box.left = rect.left;
box.top = rect.top;
box.front = 0;
box.right = rect.right;
box.bottom = rect.bottom;
box.back = 1;
list->CopyTextureRegion(dstLoc, box.left, box.top, 0, srcLoc, &box);
}
bool CSwapChainProcessor::SwapChainNewFrame(ComPtr<IDXGIResource> acquiredBuffer, unsigned dirtyRectCount)
{
ComPtr<ID3D11Texture2D> texture;
HRESULT hr = acquiredBuffer.As(&texture);
@@ -261,8 +292,27 @@ bool CSwapChainProcessor::SwapChainNewFrame(ComPtr<IDXGIResource> acquiredBuffer
*/
srcRes->Signal();
//FIXME: handle dirty rects
srcRes->SetFullDamage();
RECT dirtyRects[LG_MAX_DIRTY_RECTS] = {0};
if (dirtyRectCount > ARRAYSIZE(dirtyRects))
{
srcRes->SetFullDamage();
}
else
{
IDARG_IN_GETDIRTYRECTS dirtyIn = {};
dirtyIn.DirtyRectInCount = dirtyRectCount;
dirtyIn.pDirtyRects = dirtyRects;
IDARG_OUT_GETDIRTYRECTS dirtyOut = {};
hr = IddCxSwapChainGetDirtyRects(m_hSwapChain, &dirtyIn, &dirtyOut);
if (FAILED(hr))
{
DEBUG_ERROR_HR(hr, "IddCxSwapChainGetDirtyRects Failed");
srcRes->SetFullDamage();
}
else
srcRes->SetDirtyRects(dirtyRects, dirtyOut.DirtyRectOutCount);
}
D3D12_RESOURCE_DESC desc = srcRes->GetRes()->GetDesc();
D3D12_PLACED_SUBRESOURCE_FOOTPRINT layout;
@@ -280,7 +330,9 @@ bool CSwapChainProcessor::SwapChainNewFrame(ComPtr<IDXGIResource> acquiredBuffer
(int)desc.Width,
(int)desc.Height,
(int)layout.Footprint.RowPitch,
desc.Format);
desc.Format,
srcRes->GetDirtyRects(),
srcRes->GetDirtyRectCount());
if (!buffer.mem)
return false;
@@ -314,8 +366,32 @@ bool CSwapChainProcessor::SwapChainNewFrame(ComPtr<IDXGIResource> acquiredBuffer
dstLoc.PlacedFootprint = layout;
srcRes->Sync(*copyQueue);
copyQueue->GetGfxList()->CopyTextureRegion(
&dstLoc, 0, 0, 0, &srcLoc, NULL);
const RECT * currentDirtyRects = srcRes->GetDirtyRects();
unsigned nbDirtyRects = srcRes->GetDirtyRectCount();
if (IsFullDamage(currentDirtyRects, nbDirtyRects, desc) ||
nbDirtyRects > KVMFR_MAX_DAMAGE_RECTS || m_nbDirtyRects == 0)
{
copyQueue->GetGfxList()->CopyTextureRegion(
&dstLoc, 0, 0, 0, &srcLoc, NULL);
}
else if (m_nbDirtyRects + nbDirtyRects > LG_MAX_DIRTY_RECTS)
{
copyQueue->GetGfxList()->CopyTextureRegion(
&dstLoc, 0, 0, 0, &srcLoc, NULL);
}
else
{
for (const RECT * rect = m_dirtyRects; rect < m_dirtyRects + m_nbDirtyRects; ++rect)
CopyDirtyRect(copyQueue->GetGfxList(), &dstLoc, &srcLoc, *rect);
for (const RECT * rect = currentDirtyRects; rect < currentDirtyRects + nbDirtyRects; ++rect)
CopyDirtyRect(copyQueue->GetGfxList(), &dstLoc, &srcLoc, *rect);
}
memcpy(m_dirtyRects, currentDirtyRects, nbDirtyRects * sizeof(*m_dirtyRects));
m_nbDirtyRects = nbDirtyRects;
copyQueue->Execute();
return true;