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[idd] driver: pre-calculae addresses of structs and offsets

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This commit is contained in:
Geoffrey McRae 2025-03-30 22:58:12 +00:00
parent 4e951184f1
commit f4df3f0ec7
3 changed files with 43 additions and 37 deletions
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33
idd/LGIdd/CIndirectDeviceContext.cpp
View File

@ -547,6 +547,7 @@ bool CIndirectDeviceContext::SetupLGMP(size_t alignSize)
DEBUG_INFO("Max Frame Size: %u MiB", (unsigned int)(m_maxFrameSize / 1048576LL));
for (int i = 0; i < LGMP_Q_FRAME_LEN; ++i)
{
if ((status = lgmpHostMemAllocAligned(m_lgmp, (uint32_t)m_maxFrameSize,
(uint32_t)m_alignSize, &m_frameMemory[i])) != LGMP_OK)
{
@ -554,6 +555,16 @@ bool CIndirectDeviceContext::SetupLGMP(size_t alignSize)
return false;
}
m_frame[i] = (KVMFRFrame *)lgmpHostMemPtr(m_frameMemory[i]);
/**
* put the framebuffer on the border of the next page, this is to allow for
* aligned DMA tranfers by the reciever */
const size_t alignOffset = alignSize - sizeof(FrameBuffer);
m_frame[i]->offset = (uint32_t)alignOffset;
m_frameBuffer[i] = (FrameBuffer*)(((uint8_t*)m_frame[i]) + alignOffset);
}
WDF_TIMER_CONFIG config;
WDF_TIMER_CONFIG_INIT_PERIODIC(&config,
[](WDFTIMER timer) -> void
@ -658,16 +669,6 @@ void CIndirectDeviceContext::LGMPTimer()
ResendCursor();
}
//FIXME: this should not really be done here, this is a hack
#pragma warning(push)
#pragma warning(disable: 4200)
struct FrameBuffer
{
volatile uint32_t wp;
uint8_t data[0];
};
#pragma warning(pop)
CIndirectDeviceContext::PreparedFrameBuffer CIndirectDeviceContext::PrepareFrameBuffer(int width, int height, int pitch, DXGI_FORMAT format)
{
PreparedFrameBuffer result = {};
@ -687,7 +688,7 @@ CIndirectDeviceContext::PreparedFrameBuffer CIndirectDeviceContext::PrepareFrame
if (++m_frameIndex == LGMP_Q_FRAME_LEN)
m_frameIndex = 0;
KVMFRFrame * fi = (KVMFRFrame *)lgmpHostMemPtr(m_frameMemory[m_frameIndex]);
KVMFRFrame * fi = m_frame[m_frameIndex];
// wait until there is room in the queue
while (lgmpHostQueuePending(m_frameQueue) == LGMP_Q_FRAME_LEN)
@ -720,12 +721,12 @@ CIndirectDeviceContext::PreparedFrameBuffer CIndirectDeviceContext::PrepareFrame
fi->frameHeight = height;
fi->stride = width * bpp;
fi->pitch = pitch;
fi->offset = (uint32_t)(m_alignSize - sizeof(FrameBuffer));
// fi->offset is initialized at startup
fi->flags = 0;
fi->rotation = FRAME_ROT_0;
fi->damageRectsCount = 0;
FrameBuffer* fb = (FrameBuffer*)(((uint8_t*)fi) + fi->offset);
FrameBuffer* fb = m_frameBuffer[m_frameIndex];
fb->wp = 0;
lgmpHostQueuePost(m_frameQueue, 0, m_frameMemory[m_frameIndex]);
@ -739,8 +740,7 @@ CIndirectDeviceContext::PreparedFrameBuffer CIndirectDeviceContext::PrepareFrame
void CIndirectDeviceContext::WriteFrameBuffer(unsigned frameIndex, void* src, size_t offset, size_t len, bool setWritePos)
{
KVMFRFrame * fi = (KVMFRFrame*)lgmpHostMemPtr(m_frameMemory[frameIndex]);
FrameBuffer * fb = (FrameBuffer*)(((uint8_t*)fi) + fi->offset);
FrameBuffer * fb = m_frameBuffer[frameIndex];
memcpy(
(void *)((uintptr_t)fb->data + offset),
@ -753,8 +753,7 @@ void CIndirectDeviceContext::WriteFrameBuffer(unsigned frameIndex, void* src, si
void CIndirectDeviceContext::FinalizeFrameBuffer(unsigned frameIndex)
{
KVMFRFrame * fi = (KVMFRFrame*)lgmpHostMemPtr(m_frameMemory[frameIndex]);
FrameBuffer * fb = (FrameBuffer *)(((uint8_t*)fi) + fi->offset);
FrameBuffer * fb = m_frameBuffer[frameIndex];
fb->wp = m_height * m_pitch;
}

12
idd/LGIdd/CIndirectDeviceContext.h
View File

@ -35,6 +35,16 @@ extern "C" {
#define MAX_POINTER_SIZE (sizeof(KVMFRCursor) + (512 * 512 * 4))
#define POINTER_SHAPE_BUFFERS 3
//FIXME: this should not really be done here, this is a hack
#pragma warning(push)
#pragma warning(disable: 4200)
struct FrameBuffer
{
volatile uint32_t wp;
uint8_t data[0];
};
#pragma warning(pop)
class CIndirectDeviceContext
{
private:
@ -64,6 +74,8 @@ private:
uint32_t m_formatVer = 0;
uint32_t m_frameSerial = 0;
PLGMPMemory m_frameMemory[LGMP_Q_FRAME_LEN] = {};
KVMFRFrame * m_frame [LGMP_Q_FRAME_LEN] = {};
FrameBuffer * m_frameBuffer[LGMP_Q_FRAME_LEN] = {};
int m_width = 0;
int m_height = 0;

7
idd/LGIdd/CSwapChainProcessor.cpp
View File

@ -250,12 +250,7 @@ bool CSwapChainProcessor::SwapChainNewFrame(ComPtr<IDXGIResource> acquiredBuffer
D3D12_TEXTURE_COPY_LOCATION dstLoc = {};
dstLoc.pResource = fbRes->Get().Get();
dstLoc.Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT;
dstLoc.PlacedFootprint.Offset = 0;
dstLoc.PlacedFootprint.Footprint.Format = desc.Format;
dstLoc.PlacedFootprint.Footprint.Width = (UINT)desc.Width;
dstLoc.PlacedFootprint.Footprint.Height = (UINT)desc.Height;
dstLoc.PlacedFootprint.Footprint.Depth = 1;
dstLoc.PlacedFootprint.Footprint.RowPitch = layout.Footprint.RowPitch;
dstLoc.PlacedFootprint = layout;
srcRes->Sync(*copyQueue);
copyQueue->GetGfxList()->CopyTextureRegion(