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a/d3d: Add a fence waiting helper

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This commit is contained in:
Ryan Pavlik 2022-05-24 14:45:49 -05:00
parent 3f777350e1
commit 903fd01272
2 changed files with 39 additions and 0 deletions
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23
src/xrt/auxiliary/d3d/d3d_d3d11_fence.cpp
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@ -13,6 +13,7 @@
#include "util/u_logging.h"
#include "util/u_debug.h"
#include "util/u_handles.h"
#include "util/u_time.h"
#include "xrt/xrt_windows.h"
@ -24,6 +25,8 @@
#include <inttypes.h>
#include <memory>
using namespace std::chrono;
#define DEFAULT_CATCH(...) \
catch (wil::ResultException const &e) \
@ -93,4 +96,24 @@ try {
}
DEFAULT_CATCH(XRT_ERROR_ALLOCATION)
xrt_result_t
waitOnFenceWithTimeout(wil::com_ptr<ID3D11Fence> fence,
wil::unique_event_nothrow &event,
uint64_t value,
std::chrono::milliseconds timeout_ms)
{
DWORD dwTimeout = duration_cast<duration<DWORD, std::milli>>(timeout_ms).count();
// Have to use this instead of ID3D11DeviceContext4::Wait because the latter has no timeout
// parameter.
fence->SetEventOnCompletion(value, event.get());
if (value <= fence->GetCompletedValue()) {
// oh we already reached this value.
return XRT_SUCCESS;
}
if (event.wait(dwTimeout)) {
return XRT_SUCCESS;
}
return XRT_TIMEOUT;
}
} // namespace xrt::auxiliary::d3d

16
src/xrt/auxiliary/d3d/d3d_d3d11_fence.hpp
View file

@ -15,6 +15,7 @@
#include <d3d11_4.h>
#include <wil/com.h>
#include <chrono>
namespace xrt::auxiliary::d3d {
@ -40,4 +41,19 @@ createSharedFence(ID3D11Device5 &device,
xrt_graphics_sync_handle_t *out_handle,
wil::com_ptr<ID3D11Fence> &out_d3dfence);
/*!
* Wait for a fence to be signaled with value equal or greater than @p value within @p timeout_ns nanoseconds.
*
* @param fence The fence to wait on.
* @param event An event to use to wait. Please use a dedicated event for a single thread's calls to this function.
* @param value The desired fence value
* @param timeout_ms After this long, we may return early with @ref XRT_TIMEOUT even before the fence
* reaches the value.
*/
xrt_result_t
waitOnFenceWithTimeout(wil::com_ptr<ID3D11Fence> fence,
wil::unique_event_nothrow &event,
uint64_t value,
std::chrono::milliseconds timeout_ms);
}; // namespace xrt::auxiliary::d3d