Method execute

Source/RenderPasses/ErrorMeasurePass/ErrorMeasurePass.cpp:131–182

}

void ErrorMeasurePass::execute(RenderContext* pRenderContext, const RenderData& renderData)
{
    ref<Texture> pSourceImageTexture = renderData.getTexture(kInputChannelSourceImage);
    ref<Texture> pOutputImageTexture = renderData.getTexture(kOutputChannelImage);

    // Create the texture for the difference image if this is our first
    // time through or if the source image resolution has changed.
    const uint32_t width = pSourceImageTexture->getWidth(), height = pSourceImageTexture->getHeight();
    if (!mpDifferenceTexture || mpDifferenceTexture->getWidth() != width || mpDifferenceTexture->getHeight() != height)
    {
        mpDifferenceTexture = mpDevice->createTexture2D(
            width,
            height,
            ResourceFormat::RGBA32Float,
            1,
            1,
            nullptr,
            ResourceBindFlags::ShaderResource | ResourceBindFlags::UnorderedAccess
        );
        FALCOR_ASSERT(mpDifferenceTexture);
    }

    mMeasurements.valid = false;

    ref<Texture> pReference = getReference(renderData);
    if (!pReference)
    {
        // We don't have a reference image, so just copy the source image to the output.
        pRenderContext->blit(pSourceImageTexture->getSRV(), pOutputImageTexture->getRTV());
        return;
    }

    runDifferencePass(pRenderContext, renderData);
    runReductionPasses(pRenderContext, renderData);

    switch (mSelectedOutputId)
    {
    case OutputId::Source:
        pRenderContext->blit(pSourceImageTexture->getSRV(), pOutputImageTexture->getRTV());
        break;
    case OutputId::Reference:
        pRenderContext->blit(pReference->getSRV(), pOutputImageTexture->getRTV());
        break;
    case OutputId::Difference:
        pRenderContext->blit(mpDifferenceTexture->getSRV(), pOutputImageTexture->getRTV());
        break;
    default:
        FALCOR_THROW("ErrorMeasurePass: Unhandled OutputId case");
    }

    saveMeasurementsToFile();
}

void ErrorMeasurePass::runDifferencePass(RenderContext* pRenderContext, const RenderData& renderData)
{