Method Sync

Hydrogent/src/Tasks/HnRenderShadowsTask.cpp:53–125

}

void HnRenderShadowsTask::Sync(pxr::HdSceneDelegate* Delegate,
                               pxr::HdTaskContext*   TaskCtx,
                               pxr::HdDirtyBits*     DirtyBits)
{
    if (*DirtyBits & pxr::HdChangeTracker::DirtyCollection)
    {
        pxr::VtValue           CollectionVal = Delegate->Get(GetId(), pxr::HdTokens->collection);
        pxr::HdRprimCollection Collection    = CollectionVal.Get<pxr::HdRprimCollection>();

        if (Collection.GetName().IsEmpty())
        {
            m_RenderPass.reset();
        }
        else
        {
            if (!m_RenderPass)
            {
                pxr::HdRenderIndex&    Index          = Delegate->GetRenderIndex();
                pxr::HdRenderDelegate* RenderDelegate = Index.GetRenderDelegate();

                m_RenderPass = std::static_pointer_cast<HnRenderPass>(RenderDelegate->CreateRenderPass(&Index, Collection));

                {
                    pxr::VtValue ParamsValue = Delegate->Get(GetId(), HnTokens->renderPassParams);
                    if (ParamsValue.IsHolding<HnRenderPassParams>())
                    {
                        HnRenderPassParams RenderPassParams = ParamsValue.UncheckedGet<HnRenderPassParams>();
                        m_RenderPass->SetParams(RenderPassParams);
                    }
                    else
                    {
                        UNEXPECTED("Unexpected type of render pass parameters ", ParamsValue.GetTypeName());
                    }
                }

                // Need to set params for the new render pass.
                *DirtyBits |= pxr::HdChangeTracker::DirtyParams;
            }
            else
            {
                m_RenderPass->SetRprimCollection(Collection);
            }
        }
    }

    if (*DirtyBits & pxr::HdChangeTracker::DirtyParams)
    {
        HnRenderShadowsTaskParams Params;
        if (GetTaskParams(Delegate, Params))
        {
            m_RPState.SetDepthBias(Params.State.DepthBias, Params.State.SlopeScaledDepthBias);
            m_RPState.SetDepthFunc(Params.State.DepthFunc);
            m_RPState.SetDepthBiasEnabled(Params.State.DepthBiasEnabled);
            m_RPState.SetEnableDepthTest(Params.State.DepthTestEnabled);
            m_RPState.SetEnableDepthClamp(Params.State.DepthClampEnabled);

            m_RPState.SetCullStyle(Params.State.CullStyle);
            m_RPState.SetFrontFaceCCW(Params.State.FrontFaceCCW);