Someone

void blur(u8 start,u8 end,bool averaging,video::ITexture* inTexture,video::ITexture* outTexture)
    {
        for (int i=0;i<4;++i)
        {

            blurPipeUnits[i]=start-i;
        }

        for (int i=start;i>end-1;--i)
        {
            if (i==start)
                PostprocessorNode->setMaterialTexture(0, inTexture);
            else
                PostprocessorNode->setMaterialTexture(0, blurpipe[i+1]);

            driver->setRenderTarget(blurpipe[i], true, true, video::SColor(0,0,0,0));
            PostprocessorNode->setMaterialType((video::E_MATERIAL_TYPE)shrink);
            PostprocessorNode->render();
        }

        PostprocessorNode->setMaterialTexture(0, blurpipe[blurPipeUnits[0]]);
        PostprocessorNode->setMaterialTexture(1, blurpipe[blurPipeUnits[1]]);
        PostprocessorNode->setMaterialTexture(2, blurpipe[blurPipeUnits[2]]);
        PostprocessorNode->setMaterialTexture(3, blurpipe[blurPipeUnits[3]]);
        driver->setRenderTarget(0/*outTexture, true, true, video::SColor(0,0,0,0)*/);
        PostprocessorNode->setMaterialType((video::E_MATERIAL_TYPE)blurcombine);
        PostprocessorNode->render();


    }