Method execute

Source/RenderPasses/SVGFPass/SVGFPass.cpp:173–247

}

void SVGFPass::execute(RenderContext* pRenderContext, const RenderData& renderData)
{
    ref<Texture> pAlbedoTexture = renderData.getTexture(kInputBufferAlbedo);
    ref<Texture> pColorTexture = renderData.getTexture(kInputBufferColor);
    ref<Texture> pEmissionTexture = renderData.getTexture(kInputBufferEmission);
    ref<Texture> pWorldPositionTexture = renderData.getTexture(kInputBufferWorldPosition);
    ref<Texture> pWorldNormalTexture = renderData.getTexture(kInputBufferWorldNormal);
    ref<Texture> pPosNormalFwidthTexture = renderData.getTexture(kInputBufferPosNormalFwidth);
    ref<Texture> pLinearZTexture = renderData.getTexture(kInputBufferLinearZ);
    ref<Texture> pMotionVectorTexture = renderData.getTexture(kInputBufferMotionVector);

    ref<Texture> pOutputTexture = renderData.getTexture(kOutputBufferFilteredImage);

    FALCOR_ASSERT(
        mpFilteredIlluminationFbo && mpFilteredIlluminationFbo->getWidth() == pAlbedoTexture->getWidth() &&
        mpFilteredIlluminationFbo->getHeight() == pAlbedoTexture->getHeight()
    );

    if (mBuffersNeedClear)
    {
        clearBuffers(pRenderContext, renderData);
        mBuffersNeedClear = false;
    }

    if (mFilterEnabled)
    {
        // Grab linear z and its derivative and also pack the normal into
        // the last two channels of the mpLinearZAndNormalFbo.
        computeLinearZAndNormal(pRenderContext, pLinearZTexture, pWorldNormalTexture);

        // Demodulate input color & albedo to get illumination and lerp in
        // reprojected filtered illumination from the previous frame.
        // Stores the result as well as initial moments and an updated
        // per-pixel history length in mpCurReprojFbo.
        ref<Texture> pPrevLinearZAndNormalTexture = renderData.getTexture(kInternalBufferPreviousLinearZAndNormal);
        computeReprojection(
            pRenderContext,
            pAlbedoTexture,
            pColorTexture,
            pEmissionTexture,
            pMotionVectorTexture,
            pPosNormalFwidthTexture,
            pPrevLinearZAndNormalTexture
        );

        // Do a first cross-bilateral filtering of the illumination and
        // estimate its variance, storing the result into a float4 in
        // mpPingPongFbo[0].  Takes mpCurReprojFbo as input.
        computeFilteredMoments(pRenderContext);

        // Filter illumination from mpCurReprojFbo[0], storing the result
        // in mpPingPongFbo[0].  Along the way (or at the end, depending on
        // the value of mFeedbackTap), save the filtered illumination for
        // next time into mpFilteredPastFbo.
        computeAtrousDecomposition(pRenderContext, pAlbedoTexture);

        // Compute albedo * filtered illumination and add emission back in.
        auto perImageCB = mpFinalModulate->getRootVar()["PerImageCB"];