Draw RenderTexture into RenderTexture

hi friends,

I want to draw the content of my first RenderTexture into a second one.

Is this the right way or is there a better way to achieve this?

mRTex->beginWithClear(0, 255, 0, 255);
sprite2->visit();    
mRTex->end();



mRTexScreen->beginWithClear(255, 0, 0, 255);

//mRTex->getSprite()->visit();

Sprite *sprite = Sprite::createWithTexture(mRTex->getSprite()->getTexture());
sprite->setFlippedY(true);
auto lWinSize = Director::getInstance()->getWinSizeInPixels();
sprite->setPosition(lWinSize.width / 2, lWinSize.height / 2);
sprite->visit();

mRTexScreen->end();
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