Method Prepare

Components/src/EnvMapRenderer.cpp:198–246

}

void EnvMapRenderer::Prepare(IDeviceContext*                 pContext,
                             const RenderAttribs&            Attribs,
                             const HLSL::ToneMappingAttribs& ToneMapping)
{
    if (Attribs.pEnvMap == nullptr)
    {
        UNEXPECTED("Environment map must not be null");
        return;
    }

    const PSOKey::ENV_MAP_TYPE EnvMapType = Attribs.pEnvMap->GetTexture()->GetDesc().IsCube() ?
        PSOKey::ENV_MAP_TYPE_CUBE :
        PSOKey::ENV_MAP_TYPE_SPHERE;

    m_pCurrentPSO = GetPSO({ToneMapping.iToneMappingMode, Attribs.ConvertOutputToSRGB, Attribs.ComputeMotionVectors, EnvMapType});
    if (m_pCurrentPSO == nullptr)
    {
        UNEXPECTED("Failed to get PSO");
        return;
    }

    m_pEnvMapVar->Set(Attribs.pEnvMap);

    if (m_ShaderAttribs)
    {
        if (std::memcmp(&m_ShaderAttribs->ToneMapping, &ToneMapping, sizeof(ToneMapping)) != 0 ||
            m_ShaderAttribs->AverageLogLum != Attribs.AverageLogLum ||
            m_ShaderAttribs->MipLevel != Attribs.MipLevel ||
            m_ShaderAttribs->Alpha != Attribs.Alpha)
        {
            m_ShaderAttribs->ToneMapping   = ToneMapping;
            m_ShaderAttribs->AverageLogLum = Attribs.AverageLogLum;
            m_ShaderAttribs->MipLevel      = Attribs.MipLevel;
            m_ShaderAttribs->Alpha         = Attribs.Alpha;

            pContext->UpdateBuffer(m_RenderAttribsCB, 0, sizeof(EnvMapShaderAttribs), 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<EnvMapShaderAttribs> EnvMapAttribs{pContext, m_RenderAttribsCB, MAP_WRITE, MAP_FLAG_DISCARD};
        EnvMapAttribs->ToneMapping   = ToneMapping;
        EnvMapAttribs->AverageLogLum = Attribs.AverageLogLum;
        EnvMapAttribs->MipLevel      = Attribs.MipLevel;
        EnvMapAttribs->Alpha         = Attribs.Alpha;
    }
}

void EnvMapRenderer::Render(IDeviceContext* pContext)
{