Method GetQueryResult

libraries/ntc-utils/src/GraphicsImageDifferencePass.cpp:163–192

}

bool GraphicsImageDifferencePass::GetQueryResult(uint32_t queryIndex, float outPerChannelMSE[4],
    float* outOverallMSE, float* outOverallPSNR, int channels, float maxSignalValue)
{
    if (queryIndex >= m_maxQueries)
        return false;

    // Check that ReadResults() has been called after executing queries, to avoid returning garbage.
    // We can't really check if the comparison command list has been executed by the caller,
    // but this is better than nothing.
    if (!m_resultsRead)
        return false;

    float overallMSE = 0.f;
    for (int ch = 0; ch < channels; ++ch)
    {
        float const mse = m_mseValues[queryIndex * ChannelsPerQuery + ch];
        overallMSE += mse / float(channels);

        if (outPerChannelMSE)
            outPerChannelMSE[ch] = mse;
    }

    if (outOverallMSE)
        *outOverallMSE = overallMSE;

    if (outOverallPSNR)
        *outOverallPSNR = ntc::LossToPSNR(overallMSE / (maxSignalValue * maxSignalValue));

    return true;
}