Method Execute

Hydrogent/src/Tasks/HnProcessSelectionTask.cpp:303–366

}

void HnProcessSelectionTask::Execute(pxr::HdTaskContext* TaskCtx)
{
    if (m_RenderIndex == nullptr)
    {
        UNEXPECTED("Render index is not initialized");
        return;
    }

    const HnFrameRenderTargets* Targets = GetFrameRenderTargets(TaskCtx);
    if (Targets == nullptr)
    {
        UNEXPECTED("Fraame render targets is not set in the task context");
        return;
    }

    if (!m_InitTech.PSO || !m_UpdateTech.PSO)
    {
        UNEXPECTED("Render techniques are not initialized");
        return;
    }

    HnRenderDelegate* pRenderDelegate = static_cast<HnRenderDelegate*>(m_RenderIndex->GetRenderDelegate());
    IDeviceContext*   pCtx            = pRenderDelegate->GetDeviceContext();

    ScopedDebugGroup DebugGroup{pCtx, "Process Selection"};

    if (m_SelectedPrimId.IsEmpty() || !m_InitTech.IsReady() || !m_UpdateTech.IsReady())
    {
        ITextureView* pFinalRTV = Targets->ClosestSelectedLocationRTV[m_NumJFIterations % 2];
        pCtx->SetRenderTargets(1, &pFinalRTV, nullptr, RESOURCE_STATE_TRANSITION_MODE_TRANSITION);
        pCtx->ClearRenderTarget(pFinalRTV, nullptr, RESOURCE_STATE_TRANSITION_MODE_TRANSITION);
        return;
    }

    {
        float BackgroundDepth = 1.f;
        if (!GetTaskContextData(TaskCtx, HnRenderResourceTokens->backgroundDepth, BackgroundDepth))
        {
            UNEXPECTED("Background depth is not set in the task context");
        }

        MapHelper<HLSL::ClosestSelectedLocationConstants> Constants{pCtx, m_ConstantsCB, MAP_WRITE, MAP_FLAG_DISCARD};
        Constants->ClearDepth = BackgroundDepth;
    }

    ITextureView* ClosestSelectedLocationRTVs[] = {Targets->ClosestSelectedLocationRTV[0], Targets->ClosestSelectedLocationRTV[1]};
    pCtx->SetRenderTargets(1, ClosestSelectedLocationRTVs, nullptr, RESOURCE_STATE_TRANSITION_MODE_TRANSITION);
    pCtx->SetPipelineState(m_InitTech.PSO);
    pCtx->CommitShaderResources(m_InitTech.SRB, RESOURCE_STATE_TRANSITION_MODE_TRANSITION);
    pCtx->Draw({3, DRAW_FLAG_VERIFY_ALL});

    for (Uint32 i = 0; i < m_NumJFIterations; ++i)
    {
        {
            MapHelper<HLSL::ClosestSelectedLocationConstants> Constants{pCtx, m_ConstantsCB, MAP_WRITE, MAP_FLAG_DISCARD};
            Constants->SampleRange = static_cast<float>(1 << (m_NumJFIterations - 1 - i));
        }