Can someone explain why the over blur happens? Thank you!
yauwilliam69
Remember a max function was applied to choose L? Since mipmap is being conservative in avoiding any possible aliasing, it has chosen to sacrifice resolution. It rather blurs the outcome. So overblurring happens.
danielhsu021202
Due to the perspective. As we see in slide 45. areas in the back sample a long area on the texture map. This results in a very large L value when calculating the mipmapping level (seen in slide 64), which causes it to choose a very high D level (low resolution) of the mipmap to use.
Can someone explain why the over blur happens? Thank you!
Remember a max function was applied to choose L? Since mipmap is being conservative in avoiding any possible aliasing, it has chosen to sacrifice resolution. It rather blurs the outcome. So overblurring happens.
Due to the perspective. As we see in slide 45. areas in the back sample a long area on the texture map. This results in a very large L value when calculating the mipmapping level (seen in slide 64), which causes it to choose a very high D level (low resolution) of the mipmap to use.