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What is the difference between BiLinear and TriLinear
It bothers me, is one of them faster to render textures with, which is better in cases of Performance and Quality?
Answer by Eric5h5 · Jun 04, 2013 at 02:51 AM
The difference between bilinear and trilinear is that trilinear blends between mipmaps. Clearly it takes more time to do something than to do nothing, so trilinear is necessarily slower than bilinear. If you don't have mipmaps (e.g., for typical GUI 2D usage), then trilinear is useless.
is this why street textures rendered far way seem to blur out?
No, that's a different thing...for textures viewed at an oblique angle, high levels of anisotropic filtering are recommended. With bilinear filtering only, for example, if you slowly approached a vertical wall that's initially off in the distance, you would see the different mipmap levels suddenly change as you got closer. This is especially noticeable with normal maps. With trilinear filtering, the mipmap levels are blended, so it's a smooth transition ins$$anonymous$$d.
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