Method GpuTimer

Source/Falcor/Core/API/GpuTimer.cpp:48–65

}

GpuTimer::GpuTimer(ref<Device> pDevice) : mpDevice(pDevice)
{
    FALCOR_ASSERT(mpDevice);

    mpResolveBuffer = mpDevice->createBuffer(sizeof(uint64_t) * 2, ResourceBindFlags::None, MemoryType::DeviceLocal, nullptr);
    mpResolveBuffer->breakStrongReferenceToDevice();
    mpResolveStagingBuffer = mpDevice->createBuffer(sizeof(uint64_t) * 2, ResourceBindFlags::None, MemoryType::ReadBack, nullptr);
    mpResolveStagingBuffer->breakStrongReferenceToDevice();

    // Create timestamp query heap upon first use.
    mStart = mpDevice->getTimestampQueryHeap()->allocate();
    mEnd = mpDevice->getTimestampQueryHeap()->allocate();
    if (mStart == QueryHeap::kInvalidIndex || mEnd == QueryHeap::kInvalidIndex)
    {
        FALCOR_THROW("Can't create GPU timer, no available timestamp queries.");
    }
    FALCOR_ASSERT(mEnd == (mStart + 1));
}

GpuTimer::~GpuTimer()
{