[host] dxgi: d3d12 now writes direclty into ivshmem

This is still incomplete as d3d12 doesn't have any proper sync with the
captured frame and as such is still not suggested for general usage. This
change though is monumental for this project as it removes a full memory
copy reducing bandwidth consumption enormously.
This commit is contained in:
Geoffrey McRae 2024-01-27 17:55:44 +11:00
parent adaf40e2bf
commit 34e8a2255e
10 changed files with 18754 additions and 8144 deletions

View file

@ -116,17 +116,18 @@ typedef struct CaptureInterface
void (*initOptions )(void);
bool(*create)(
void * ivshmemBase,
CaptureGetPointerBuffer getPointerBufferFn,
CapturePostPointerBuffer postPointerBufferFn
);
bool (*init )(void);
bool (*init )(unsigned * alignSize);
bool (*start )(void);
void (*stop )(void);
bool (*deinit )(void);
void (*free )(void);
CaptureResult (*capture )(void);
CaptureResult (*capture )(unsigned frameBufferIndex, FrameBuffer * frame);
CaptureResult (*waitFrame )(CaptureFrame * frame, const size_t maxFrameSize);
CaptureResult (*getFrame )(FrameBuffer * frame, int frameIndex);
}

View file

@ -14,7 +14,7 @@ add_library(capture_DXGI STATIC
src/pp/rgb24.c
)
add_definitions("-DCOBJMACROS -DINITGUID")
add_definitions("-DCOBJMACROS -DINITGUID -DWIDL_C_INLINE_WRAPPERS")
target_link_libraries(capture_DXGI
lg_common

View file

@ -36,7 +36,11 @@ struct DXGICopyBackend
const char * code;
// create the copy backend
bool (*create)(unsigned textures);
bool (*create)(
void * ivshmemBase,
unsigned * alignSize,
unsigned frameBuffers,
unsigned textures);
// configure the copy backend with the specified format
bool (*configure)(
@ -50,7 +54,10 @@ struct DXGICopyBackend
void (*free)(void);
// called just before the copy starts
bool (*preCopy)(ID3D11Texture2D * src, unsigned textureIndex);
bool (*preCopy)(ID3D11Texture2D * src,
unsigned textureIndex,
unsigned frameBufferIndex,
FrameBuffer * frameBuffer);
// called to copy the full frame
bool (*copyFull)(ID3D11Texture2D * src, unsigned textureIndex);
@ -65,6 +72,9 @@ struct DXGICopyBackend
// maps the copied frame into memory
CaptureResult (*mapTexture)(unsigned textureIndex, void ** map);
// [optional] backend specific write into the FrameBuffer
CaptureResult (*writeFrame)(int textureIndex, FrameBuffer * frame);
// unmaps the copied frame from memory
void (*unmapTexture)(unsigned textureIndex);

View file

@ -43,7 +43,11 @@ struct D3D11Backend
static struct D3D11Backend * this = NULL;
static bool d3d11_create(unsigned textures)
static bool d3d11_create(
void * ivshmemBase,
unsigned * alignSize,
unsigned frameBuffers,
unsigned textures)
{
DEBUG_ASSERT(!this);
this = calloc(1,
@ -128,7 +132,11 @@ static void d3d11_free(void)
this = NULL;
}
static bool d3d11_preCopy(ID3D11Texture2D * src, unsigned textureIndex)
static bool d3d11_preCopy(
ID3D11Texture2D * src,
unsigned textureIndex,
unsigned frameBufferIndex,
FrameBuffer * frameBuffer)
{
dxgi_contextLock();
this->texture[textureIndex].copyTime = microtime();

View file

@ -35,7 +35,6 @@
struct D3D12Texture
{
ID3D12Resource ** tex;
ID3D12CommandAllocator ** commandAllocator;
ID3D12CommandList ** commandList;
ID3D12GraphicsCommandList ** graphicsCommandList;
@ -58,6 +57,11 @@ struct D3D12Backend
float copySleep;
ID3D12Device ** device;
ID3D12Device3 ** device3;
void * ivshmemBase;
ID3D12Heap ** heap;
ID3D12Resource *** frameBuffers;
ID3D12Resource ** dstResource;
ID3D12CommandQueue ** commandQueue;
UINT64 fenceValue;
ID3D12Fence ** fence;
@ -88,7 +92,11 @@ typedef HRESULT (*D3D12GetDebugInterface_t)(
static void d3d12_free(void);
static bool d3d12_create(unsigned textures)
static bool d3d12_create(
void * ivshmemBase,
unsigned * alignSize,
unsigned frameBuffers,
unsigned textures)
{
DEBUG_ASSERT(!this);
comRef_scopePush();
@ -109,6 +117,13 @@ static bool d3d12_create(unsigned textures)
if (!this->d3d12)
goto exit;
this->frameBuffers = calloc(frameBuffers, sizeof(*this->frameBuffers));
if (!this->frameBuffers)
{
DEBUG_ERROR("Failed to allocate the ID3D12Resource frame buffer array");
goto exit;
}
if (dxgi_debug())
{
D3D12GetDebugInterface_t D3D12GetDebugInterface = (D3D12GetDebugInterface_t)
@ -145,6 +160,33 @@ static bool d3d12_create(unsigned textures)
goto exit;
}
comRef_defineLocal(ID3D12Device3, device3);
status = ID3D12Device_QueryInterface(
*device, &IID_ID3D12Device3, (void **)device3);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to obtain the ID3D12Device3 interface", status);
goto exit;
}
comRef_defineLocal(ID3D12Heap, heap);
status = ID3D12Device3_OpenExistingHeapFromAddress(
*device3,
ivshmemBase,
&IID_ID3D12Heap,
(void **)heap);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to open the framebuffer as a heap", status);
return false;
}
D3D12_HEAP_DESC heapDesc = ID3D12Heap_GetDesc(*heap);
DEBUG_INFO("ID3D12Heap : Size:%I64u Alignment:%I64u",
heapDesc.SizeInBytes, heapDesc.Alignment);
*alignSize = heapDesc.Alignment;
D3D12_COMMAND_QUEUE_DESC queueDesc =
{
.Type = D3D12_COMMAND_LIST_TYPE_COPY,
@ -186,7 +228,11 @@ static bool d3d12_create(unsigned textures)
goto exit;
}
this->ivshmemBase = ivshmemBase;
comRef_toGlobal(this->device , device );
comRef_toGlobal(this->device3 , device3 );
comRef_toGlobal(this->heap , heap );
comRef_toGlobal(this->commandQueue, commandQueue);
comRef_toGlobal(this->fence , fence );
@ -213,48 +259,12 @@ static bool d3d12_configure(
this->format = format;
this->pitch = ALIGN_TO(width * bpp, D3D12_TEXTURE_DATA_PITCH_ALIGNMENT);
D3D12_HEAP_PROPERTIES readbackHeapProperties =
{
.Type = D3D12_HEAP_TYPE_READBACK,
};
D3D12_RESOURCE_DESC texDesc =
{
.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER,
.Alignment = D3D12_DEFAULT_RESOURCE_PLACEMENT_ALIGNMENT,
.Width = this->pitch * height,
.Height = 1,
.DepthOrArraySize = 1,
.MipLevels = 1,
.Format = DXGI_FORMAT_UNKNOWN,
.SampleDesc.Count = 1,
.SampleDesc.Quality = 0,
.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR,
.Flags = D3D12_RESOURCE_FLAG_NONE
};
comRef_defineLocal(ID3D12Resource , texture );
comRef_defineLocal(ID3D12Fence , fence );
comRef_defineLocal(ID3D12CommandAllocator , commandAllocator );
comRef_defineLocal(ID3D12GraphicsCommandList, graphicsCommandList);
comRef_defineLocal(ID3D12CommandList , commandList );
for (int i = 0; i < this->textures; ++i)
{
status = ID3D12Device_CreateCommittedResource(*this->device,
&readbackHeapProperties,
D3D12_HEAP_FLAG_NONE,
&texDesc,
D3D12_RESOURCE_STATE_COPY_DEST,
NULL,
&IID_ID3D12Resource,
(void **)texture);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create texture", status);
goto exit;
}
this->texture[i].event = CreateEvent(NULL, FALSE, FALSE, NULL);
if (!this->texture[i].event)
{
@ -307,7 +317,6 @@ static bool d3d12_configure(
goto exit;
}
comRef_toGlobal(this->texture[i].tex , texture );
comRef_toGlobal(this->texture[i].fence , fence );
comRef_toGlobal(this->texture[i].commandAllocator , commandAllocator );
comRef_toGlobal(this->texture[i].graphicsCommandList, graphicsCommandList);
@ -320,6 +329,7 @@ static bool d3d12_configure(
exit:
comRef_scopePop();
return result;
}
@ -335,6 +345,8 @@ static void d3d12_free(void)
if (this->event)
CloseHandle(this->event);
free(this->frameBuffers);
if (this->d3d12)
FreeLibrary(this->d3d12);
@ -342,7 +354,11 @@ static void d3d12_free(void)
this = NULL;
}
static bool d3d12_preCopy(ID3D11Texture2D * src, unsigned textureIndex)
static bool d3d12_preCopy(
ID3D11Texture2D * src,
unsigned textureIndex,
unsigned frameBufferIndex,
FrameBuffer * frameBuffer)
{
comRef_scopePush();
bool result = false;
@ -352,9 +368,6 @@ static bool d3d12_preCopy(ID3D11Texture2D * src, unsigned textureIndex)
ID3D11DeviceContext_Flush(dxgi_getContext());
dxgi_contextUnlock();
if (this->copySleep > 0)
nsleep((uint64_t)(this->copySleep * 1000000));
this->d12src = NULL;
if (this->sharedCacheCount > -1)
{
@ -363,8 +376,7 @@ static bool d3d12_preCopy(ID3D11Texture2D * src, unsigned textureIndex)
if (this->sharedCache[i].tex == src)
{
this->d12src = *this->sharedCache[i].d12src;
result = true;
goto exit;
goto framebuffer;
}
}
@ -419,8 +431,52 @@ static bool d3d12_preCopy(ID3D11Texture2D * src, unsigned textureIndex)
this->sharedCacheCount = -1;
}
framebuffer:
if (this->frameBuffers[frameBufferIndex])
goto done;
// prepare a IVSHMEM backed texture for the provided framebuffer
D3D12_RESOURCE_DESC desc =
{
.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER,
.Alignment = D3D12_DEFAULT_RESOURCE_PLACEMENT_ALIGNMENT,
.Width = this->height * this->pitch,
.Height = 1,
.DepthOrArraySize = 1,
.MipLevels = 1,
.Format = DXGI_FORMAT_UNKNOWN,
.SampleDesc.Count = 1,
.SampleDesc.Quality = 0,
.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR,
.Flags = D3D12_RESOURCE_FLAG_ALLOW_CROSS_ADAPTER
};
comRef_defineLocal(ID3D12Resource, resource);
status = ID3D12Device3_CreatePlacedResource(
*this->device3,
*this->heap,
(uintptr_t)framebuffer_get_data(frameBuffer) - (uintptr_t)this->ivshmemBase,
&desc,
D3D12_RESOURCE_STATE_COPY_DEST,
NULL,
&IID_ID3D12Resource,
(void**)resource);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to create D3D12 resource from heap", status);
goto exit;
}
comRef_toGlobal(this->frameBuffers[frameBufferIndex], resource);
done:
this->dstResource = this->frameBuffers[frameBufferIndex];
result = true;
if (this->copySleep > 0)
nsleep((uint64_t)(this->copySleep * 1000000));
exit:
if (!result)
comRef_scopePop();
@ -441,7 +497,7 @@ static bool d3d12_copyFull(ID3D11Texture2D * src, unsigned textureIndex)
D3D12_TEXTURE_COPY_LOCATION destLoc =
{
.pResource = *tex->tex,
.pResource = *this->dstResource,
.Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT,
.PlacedFootprint =
{
@ -463,7 +519,6 @@ static bool d3d12_copyFull(ID3D11Texture2D * src, unsigned textureIndex)
return true;
}
static bool d3d12_copyRect(ID3D11Texture2D * src, unsigned textureIndex,
FrameDamageRect * rect)
{
@ -478,7 +533,7 @@ static bool d3d12_copyRect(ID3D11Texture2D * src, unsigned textureIndex,
D3D12_TEXTURE_COPY_LOCATION destLoc =
{
.pResource = *tex->tex,
.pResource = *this->dstResource,
.Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT,
.PlacedFootprint =
{
@ -561,7 +616,8 @@ static bool d3d12_postCopy(ID3D11Texture2D * src, unsigned textureIndex)
result = true;
exit:
comRef_scopePop(); //push is in pre-copy
//push is in preCopy
comRef_scopePop();
return result;
}
@ -587,32 +643,17 @@ static CaptureResult d3d12_mapTexture(unsigned textureIndex, void ** map)
return CAPTURE_RESULT_ERROR;
}
D3D12_RANGE range =
{
.Begin = 0,
.End = this->pitch * this->height
};
status = ID3D12Resource_Map(*tex->tex, 0, &range, map);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to map the texture", status);
return CAPTURE_RESULT_ERROR;
return CAPTURE_RESULT_OK;
}
static CaptureResult d3d12_writeFrame(int textureIndex, FrameBuffer * frame)
{
framebuffer_set_write_ptr(frame, this->height * this->pitch);
return CAPTURE_RESULT_OK;
}
static void d3d12_unmapTexture(unsigned textureIndex)
{
struct D3D12Texture * tex = &this->texture[textureIndex];
D3D12_RANGE range =
{
.Begin = 0,
.End = 0
};
ID3D12Resource_Unmap(*tex->tex, 0, &range);
}
static void d3d12_preRelease(void)
@ -632,6 +673,7 @@ struct DXGICopyBackend copyBackendD3D12 =
.copyRect = d3d12_copyRect,
.postCopy = d3d12_postCopy,
.mapTexture = d3d12_mapTexture,
.writeFrame = d3d12_writeFrame,
.unmapTexture = d3d12_unmapTexture,
.preRelease = d3d12_preRelease,
};

View file

@ -125,6 +125,7 @@ struct DXGIInterface
D3D_FEATURE_LEVEL featureLevel;
IDXGIOutputDuplication ** dup;
int maxTextures;
void * ivshmemBase;
Texture * texture;
int texRIndex;
int texWIndex;
@ -275,7 +276,10 @@ static void dxgi_initOptions(void)
ppEarlyInit();
}
static bool dxgi_create(CaptureGetPointerBuffer getPointerBufferFn, CapturePostPointerBuffer postPointerBufferFn)
static bool dxgi_create(
void * ivshmemBase,
CaptureGetPointerBuffer getPointerBufferFn,
CapturePostPointerBuffer postPointerBufferFn)
{
DEBUG_ASSERT(!this);
this = calloc(1, sizeof(*this));
@ -302,6 +306,7 @@ static bool dxgi_create(CaptureGetPointerBuffer getPointerBufferFn, CapturePostP
this->allowRGB24 = option_get_bool("dxgi", "allowRGB24");
this->dwmFlush = option_get_bool("dxgi", "dwmFlush");
this->disableDamage = option_get_bool("dxgi", "disableDamage");
this->ivshmemBase = ivshmemBase;
this->texture = calloc(this->maxTextures, sizeof(*this->texture));
this->getPointerBufferFn = getPointerBufferFn;
this->postPointerBufferFn = postPointerBufferFn;
@ -360,7 +365,7 @@ static bool initVertexShader(void)
return true;
}
static bool dxgi_init(void)
static bool dxgi_init(unsigned * alignSize)
{
DEBUG_ASSERT(this);
@ -800,7 +805,11 @@ static bool dxgi_init(void)
{
if (!strcasecmp(copyBackend, backends[i]->code))
{
if (!backends[i]->create(this->maxTextures))
if (!backends[i]->create(
this->ivshmemBase,
alignSize,
LGMP_Q_FRAME_LEN,
this->maxTextures))
{
DEBUG_ERROR("Failed to initialize selected capture backend: %s", backends[i]->name);
backends[i]->free();
@ -1052,7 +1061,8 @@ static void computeTexDamage(Texture * tex)
}
}
static CaptureResult dxgi_capture(void)
static CaptureResult dxgi_capture(unsigned frameBufferIndex,
FrameBuffer * frameBuffer)
{
DEBUG_ASSERT(this);
DEBUG_ASSERT(this->initialized);
@ -1101,6 +1111,7 @@ static CaptureResult dxgi_capture(void)
{
if (result == CAPTURE_RESULT_ERROR)
DEBUG_WINERROR("AcquireNextFrame failed", status);
goto exit;
}
@ -1230,7 +1241,8 @@ static CaptureResult dxgi_capture(void)
computeFrameDamage(tex);
computeTexDamage(tex);
if (!this->backend->preCopy(dst, this->texWIndex))
if (!this->backend->preCopy(dst, this->texWIndex,
frameBufferIndex, frameBuffer))
{
result = CAPTURE_RESULT_ERROR;
goto exit;
@ -1440,6 +1452,14 @@ static CaptureResult dxgi_getFrame(FrameBuffer * frame, int frameIndex)
Texture * tex = &this->texture[this->texRIndex];
FrameDamage * damage = &this->frameDamage[frameIndex];
if (this->backend->writeFrame)
{
CaptureResult result = this->backend->writeFrame(frameIndex, frame);
if (result != CAPTURE_RESULT_OK)
return result;
}
else
{
if (tex->damageRectsCount == 0 ||
damage->count < 0 ||
damage->count + tex->damageRectsCount > KVMFR_MAX_DAMAGE_RECTS)
@ -1475,6 +1495,7 @@ static CaptureResult dxgi_getFrame(FrameBuffer * frame, int frameIndex)
this->pitch, this->dataHeight, tex->map, this->pitch);
}
}
}
for (int i = 0; i < LGMP_Q_FRAME_LEN; ++i)
{

View file

@ -185,6 +185,7 @@ static void nvfbc_initOptions(void)
}
static bool nvfbc_create(
void * ivshmemBase,
CaptureGetPointerBuffer getPointerBufferFn,
CapturePostPointerBuffer postPointerBufferFn)
{
@ -220,7 +221,7 @@ static void updateScale(void)
this->targetHeight = this->height;
}
static bool nvfbc_init(void)
static bool nvfbc_init(unsigned * alignSize)
{
int adapterIndex = option_get_int("nvfbc", "adapterIndex");
@ -447,7 +448,8 @@ static void nvfbc_free(void)
NvFBCFree();
}
static CaptureResult nvfbc_capture(void)
static CaptureResult nvfbc_capture(unsigned frameBufferIndex,
FrameBuffer * frameBuffer)
{
// this is a bit of a hack as it causes this thread to block until the next
// present keeping us locked with the refresh rate of the monitor being

View file

@ -89,10 +89,13 @@ struct app
unsigned int pointerIndex;
unsigned int pointerShapeIndex;
long pageSize;
unsigned alignSize;
size_t maxFrameSize;
PLGMPHostQueue frameQueue;
PLGMPMemory frameMemory[LGMP_Q_FRAME_LEN];
KVMFRFrame * frame [LGMP_Q_FRAME_LEN];
FrameBuffer * frameBuffer[LGMP_Q_FRAME_LEN];
unsigned int frameIndex;
bool frameValid;
uint32_t frameSerial;
@ -243,7 +246,7 @@ static bool sendFrame(void)
if (++app.frameIndex == LGMP_Q_FRAME_LEN)
app.frameIndex = 0;
KVMFRFrame * fi = lgmpHostMemPtr(app.frameMemory[app.frameIndex]);
KVMFRFrame * fi = app.frame[app.frameIndex];
KVMFRFrameFlags flags =
(frame.hdr ? FRAME_FLAG_HDR : 0) |
(frame.hdrPQ ? FRAME_FLAG_HDR_PQ : 0);
@ -311,7 +314,7 @@ static bool sendFrame(void)
fi->frameHeight = frame.frameHeight;
fi->stride = frame.stride;
fi->pitch = frame.pitch;
fi->offset = app.pageSize - sizeof(FrameBuffer);
// fi->offset is initialized at startup
fi->flags = flags;
fi->damageRectsCount = frame.damageRectsCount;
memcpy(fi->damageRects, frame.damageRects,
@ -319,10 +322,7 @@ static bool sendFrame(void)
app.frameValid = true;
// put the framebuffer on the border of the next page
// this is to allow for aligned DMA transfers by the receiver
FrameBuffer * fb = (FrameBuffer *)(((uint8_t*)fi) + fi->offset);
framebuffer_prepare(fb);
framebuffer_prepare(app.frameBuffer[app.frameIndex]);
/* we post and then get the frame, this is intentional! */
if ((status = lgmpHostQueuePost(app.frameQueue, 0,
@ -332,7 +332,7 @@ static bool sendFrame(void)
return true;
}
app.iface->getFrame(fb, app.frameIndex);
app.iface->getFrame(app.frameBuffer[app.frameIndex], app.frameIndex);
return true;
}
@ -392,13 +392,13 @@ static bool captureStart(void)
{
if (app.state == APP_STATE_IDLE)
{
if (!app.iface->init())
if (!app.iface->init(&app.alignSize))
{
DEBUG_ERROR("Failed to initialize the capture device");
return false;
}
if (app.iface->start && !app.iface->start())
if (app.iface->start && app.iface->start())
{
DEBUG_ERROR("Failed to start the capture device");
return false;
@ -720,18 +720,26 @@ static bool lgmpSetup(struct IVSHMEM * shmDev)
}
app.maxFrameSize = lgmpHostMemAvail(app.lgmp);
app.maxFrameSize = (app.maxFrameSize - (app.pageSize - 1)) & ~(app.pageSize - 1);
app.maxFrameSize = (app.maxFrameSize - (app.alignSize - 1)) & ~(app.alignSize - 1);
app.maxFrameSize /= LGMP_Q_FRAME_LEN;
DEBUG_INFO("Max Frame Size : %u MiB", (unsigned int)(app.maxFrameSize / 1048576LL));
for(int i = 0; i < LGMP_Q_FRAME_LEN; ++i)
{
if ((status = lgmpHostMemAllocAligned(app.lgmp, app.maxFrameSize,
app.pageSize, &app.frameMemory[i])) != LGMP_OK)
app.alignSize, &app.frameMemory[i])) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostMemAlloc Failed (Frame): %s", lgmpStatusString(status));
goto fail_lgmp;
}
app.frame[i] = lgmpHostMemPtr(app.frameMemory[i]);
/* put the framebuffer on the border of the next page, this is to allow for
aligned DMA transfers by the receiver */
const unsigned alignOffset = app.alignSize - sizeof(FrameBuffer);
app.frame[i]->offset = alignOffset;
app.frameBuffer[i] = (FrameBuffer *)(((uint8_t*)app.frame[i]) + alignOffset);
}
if (!lgCreateTimer(10, lgmpTimer, NULL, &app.lgmpTimer))
@ -828,7 +836,7 @@ int app_main(int argc, char * argv[])
DEBUG_INFO("Max Pointer Size : %u KiB", (unsigned int)MAX_POINTER_SIZE / 1024);
DEBUG_INFO("KVMFR Version : %u", KVMFR_VERSION);
app.pageSize = sysinfo_getPageSize();
app.alignSize = sysinfo_getPageSize();
app.frameValid = false;
app.pointerShapeValid = false;
@ -847,13 +855,16 @@ int app_main(int argc, char * argv[])
DEBUG_INFO("Trying : %s", iface->getName());
if (!iface->create(captureGetPointerBuffer, capturePostPointerBuffer))
if (!iface->create(
shmDev.mem,
captureGetPointerBuffer,
capturePostPointerBuffer))
{
iface = NULL;
continue;
}
if (iface->init())
if (iface->init(&app.alignSize))
break;
iface->free();
@ -953,7 +964,14 @@ int app_main(int argc, char * argv[])
}
const uint64_t captureStart = microtime();
const CaptureResult result = app.iface->capture();
unsigned nextIndex = app.frameIndex + 1;
if (nextIndex == LGMP_Q_FRAME_LEN)
nextIndex = 0;
const CaptureResult result = app.iface->capture(
nextIndex, app.frameBuffer[nextIndex]);
if (likely(result == CAPTURE_RESULT_OK))
previousFrameTime = captureStart;
else if (likely(result == CAPTURE_RESULT_TIMEOUT))

17505
vendor/directx/d3d12.h vendored

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