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[host] d12: implement damage aware copy

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This commit is contained in:
Geoffrey McRae
2024-02-23 10:54:08 +11:00
parent 1098b7e6bd
commit 9de047d9cb
3 changed files with 209 additions and 15 deletions
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78
host/platform/Windows/capture/D12/backend/dd.c
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@@ -51,6 +51,9 @@ typedef struct DDCacheInfo
ID3D12Fence ** d12Fence;
UINT64 fenceValue;
bool ready;
RECT dirtyRects[D12_MAX_DIRTY_RECTS];
unsigned nbDirtyRects;
}
DDCacheInfo;
@@ -416,13 +419,17 @@ static CaptureResult d12_dd_sync(D12Backend * instance,
}
static ID3D12Resource * d12_dd_fetch(D12Backend * instance,
unsigned frameBufferIndex)
unsigned frameBufferIndex, const RECT * dirtyRects[static D12_MAX_DIRTY_RECTS],
unsigned * nbDirtyRects)
{
DDInstance * this = UPCAST(DDInstance, instance);
if (!this->current)
return NULL;
*dirtyRects = this->current->dirtyRects;
*nbDirtyRects = this->current->nbDirtyRects;
ID3D12Resource_AddRef(*this->current->d12Res);
return *this->current->d12Res;
}
@@ -478,6 +485,75 @@ static bool d12_dd_handleFrameUpdate(DDInstance * this, IDXGIResource * res)
ID3D11DeviceContext4_Signal(
*this->context, *this->current->fence, this->current->fenceValue);
// handle damage tracking
this->current->nbDirtyRects = 0;
if (this->base.trackDamage)
{
/* Get the frame damage, if there is too many damage rects, we disable
* damage tracking for the frame and assume full frame damage */
UINT requiredSize;
hr = IDXGIOutputDuplication_GetFrameDirtyRects(*this->dup,
sizeof(this->current->dirtyRects),
this->current->dirtyRects,
&requiredSize);
if (FAILED(hr))
{
if (hr != DXGI_ERROR_MORE_DATA)
{
DEBUG_WINERROR("GetFrameDirtyRects failed", hr);
goto exit;
}
}
else
this->current->nbDirtyRects =
requiredSize / sizeof(*this->current->dirtyRects);
DXGI_OUTDUPL_MOVE_RECT moveRects[
(ARRAY_LENGTH(this->current->dirtyRects) - this->current->nbDirtyRects) / 2
];
hr = IDXGIOutputDuplication_GetFrameMoveRects(*this->dup,
sizeof(moveRects), moveRects, &requiredSize);
if (FAILED(hr))
{
this->current->nbDirtyRects = 0;
if (hr != DXGI_ERROR_MORE_DATA)
{
DEBUG_WINERROR("GetFrameMoveRects failed", hr);
goto exit;
}
}
/* Move rects are seemingly not generated on Windows 10, but incase it
* becomes a thing in the future we still need to implement this */
const unsigned moveRectCount = requiredSize / sizeof(*moveRects);
for(DXGI_OUTDUPL_MOVE_RECT *moveRect = moveRects; moveRect < moveRects +
moveRectCount; ++moveRect)
{
/* According to WebRTC source comments, the DirectX capture API may
* randomly return unmoved rects, which should be skipped to avoid
* unnecessary work */
if (moveRect->SourcePoint.x == moveRect->DestinationRect.left &&
moveRect->SourcePoint.y == moveRect->DestinationRect.top)
continue;
/* Add the source rect to the dirty array */
this->current->dirtyRects[this->current->nbDirtyRects++] = (RECT)
{
.left = moveRect->SourcePoint.x,
.top = moveRect->SourcePoint.y,
.right = moveRect->SourcePoint.x +
(moveRect->DestinationRect.right - moveRect->DestinationRect.left),
.bottom = moveRect->SourcePoint.y +
(moveRect->DestinationRect.bottom - moveRect->DestinationRect.top)
};
/* Add the destination rect to the dirty array */
this->current->dirtyRects[this->current->nbDirtyRects++] =
moveRect->DestinationRect;
}
}
result = true;
exit: