Method Execute

Hydrogent/src/HnRenderPass.cpp:265–550

}

HnRenderPass::EXECUTE_RESULT HnRenderPass::Execute(HnRenderPassState& RPState, const pxr::TfTokenVector& Tags)
{
    UpdateDrawList(Tags);
    if (m_DrawList.empty())
        return EXECUTE_RESULT_OK;

    RenderState State{*this, RPState};

    const std::string DebugGroupName = std::string{"Render Pass - "} + m_MaterialTag.GetString() + " - " + HnRenderPassParams::GetSelectionTypeString(m_Params.Selection);
    ScopedDebugGroup  DebugGroup{State.pCtx, DebugGroupName.c_str()};

    RPState.Commit(State.pCtx);

    {
        PBR_Renderer::DebugViewType DebugView = State.RenderParam.GetDebugView();
        if (m_DebugView != DebugView)
        {
            m_DrawListItemsDirtyFlags |= DRAW_LIST_ITEM_DIRTY_FLAG_PSO;
            m_DebugView = DebugView;
        }
    }

    {
        HN_RENDER_MODE RenderMode = State.RenderParam.GetRenderMode();
        if (m_RenderMode != RenderMode)
        {
            m_RenderMode = RenderMode;
            m_DrawListItemsDirtyFlags |= DRAW_LIST_ITEM_DIRTY_FLAG_PSO | DRAW_LIST_ITEM_DIRTY_FLAG_MESH_DATA;
            // Reset fallback PSO so that it is updated in UpdateDrawListGPUResources
            m_FallbackPSO = nullptr;
        }
    }

    {
        bool UseShadows = State.RenderParam.GetUseShadows();
        if (m_UseShadows != UseShadows)
        {
            m_DrawListItemsDirtyFlags |= DRAW_LIST_ITEM_DIRTY_FLAG_PSO;
            m_UseShadows = UseShadows;
        }
    }

    {
        const Uint32 MaterialVersion    = State.RenderParam.GetAttribVersion(HnRenderParam::GlobalAttrib::Material);
        const Uint32 MeshCullingVersion = State.RenderParam.GetAttribVersion(HnRenderParam::GlobalAttrib::MeshCulling);
        if (m_GlobalAttribVersions.Material != MaterialVersion ||
            m_GlobalAttribVersions.MeshCulling != MeshCullingVersion)
        {
            // Attributes of some material have changed. We don't know which meshes may be affected,
            // so we need to process the entire draw list.

            // Also update draw list items when mesh culling changes as it affects the PSO.

            m_DrawListItemsDirtyFlags |= DRAW_LIST_ITEM_DIRTY_FLAG_PSO;

            m_GlobalAttribVersions.Material    = MaterialVersion;
            m_GlobalAttribVersions.MeshCulling = MeshCullingVersion;
        }