Method Prepare

Components/src/BoundBoxRenderer.cpp:176–223

}

void BoundBoxRenderer::Prepare(IDeviceContext* pContext, const RenderAttribs& Attribs)
{
    m_pCurrentPSO = GetPSO({Attribs.ConvertOutputToSRGB, Attribs.ComputeMotionVectors});
    if (m_pCurrentPSO == nullptr)
    {
        UNEXPECTED("Failed to get PSO");
        return;
    }

    if (m_pCurrentPSO->GetStatus() != PIPELINE_STATE_STATUS_READY)
        return;

    if (!m_SRB)
    {
        m_pCurrentPSO->CreateShaderResourceBinding(&m_SRB, true);
        m_SRB->GetVariableByName(SHADER_TYPE_VERTEX, "cbCameraAttribs")->Set(m_pCameraAttribsCB);
        m_SRB->GetVariableByName(SHADER_TYPE_VERTEX, "cbBoundBoxAttribs")->Set(m_RenderAttribsCB);
    }

    VERIFY_EXPR(Attribs.BoundBoxTransform != nullptr);

    if (m_ShaderAttribs)
    {
        const BoundBoxShaderAttribs ShaderAttribs{
            m_PackMatrixRowMajor ? *Attribs.BoundBoxTransform : Attribs.BoundBoxTransform->Transpose(),
            Attribs.Color != nullptr ? *Attribs.Color : float4{1.0, 1.0, 1.0, 1.0},
            Attribs.PatternLength,
            Attribs.PatternMask,
            0,
            0,
        };
        if (std::memcmp(m_ShaderAttribs.get(), &ShaderAttribs, sizeof(ShaderAttribs)) != 0)
        {
            *m_ShaderAttribs = ShaderAttribs;
            pContext->UpdateBuffer(m_RenderAttribsCB, 0, sizeof(BoundBoxShaderAttribs), m_ShaderAttribs.get(), RESOURCE_STATE_TRANSITION_MODE_TRANSITION);
            StateTransitionDesc Barrier{m_RenderAttribsCB, RESOURCE_STATE_UNKNOWN, RESOURCE_STATE_CONSTANT_BUFFER, STATE_TRANSITION_FLAG_UPDATE_STATE};
            pContext->TransitionResourceStates(1, &Barrier);
        }
    }
    else
    {
        MapHelper<BoundBoxShaderAttribs> BBAttribs{pContext, m_RenderAttribsCB, MAP_WRITE, MAP_FLAG_DISCARD};
        WriteShaderMatrix(&BBAttribs->Transform, *Attribs.BoundBoxTransform, !m_PackMatrixRowMajor);
        BBAttribs->Color         = Attribs.Color != nullptr ? *Attribs.Color : float4{1.0, 1.0, 1.0, 1.0};
        BBAttribs->PatternLength = Attribs.PatternLength;
        BBAttribs->PatternMask   = Attribs.PatternMask;
    }
}

void BoundBoxRenderer::Render(IDeviceContext* pContext)
{