float exponent = static_cast<float>(i);
mBlurredImage[i-1] = FrameBufferImage::New( mTargetSize.width/std::pow(2.f,exponent) , mTargetSize.height/std::pow(2.f,exponent),
GAUSSIAN_BLUR_RENDER_TARGET_PIXEL_FORMAT );
float exponent = static_cast<float>(i);
mBlurredImage[i-1] = FrameBufferImage::New( mTargetSize.width/std::pow(2.f,exponent) , mTargetSize.height/std::pow(2.f,exponent),
GAUSSIAN_BLUR_RENDER_TARGET_PIXEL_FORMAT );