Lecture20a-LOD-in-texture-mapping

Lecture20a-LOD-in-texture-mapping - (get aliasing Average n...

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Level Of Detail in Texture Mapping CS 455
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Curious Warning in an XNA build Content\maps\dcmap_orchid_pink_27.jpg : warning : Mipmapped texture will not work on all graphics cards. This image is sized 256x205, but many cards do not support mipmapped textures that are not a power of two in size. Why is that?
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Level of Detail
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MIP mapping Best article I’ve found yet… http://www.gamedev.net/reference/articles/article1233.asp
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Texture Mapping at a Distance
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Texture Mapping at a Distance Now you have a smaller (in screen space) version of the box that is farther away. What do you do with the texture?
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Texture Mapping at a Distance Sample every nth point of the texture image?
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Unformatted text preview: (get aliasing) Average n points to get one point? (costly) MIP mapping • Create a pyramid of copies of the texture. Use the appropriate copy based on the screen-space size of the object to texture. • Works best if each texture is ½ the previous. • Can interpolate if you are between sizes. MIP mapping • Create a pyramid of copies of the texture. Use the appropriate copy based on the screen-space size of the object to texture. • Works best if each texture is ½ the previous. • Can interpolate if you are between sizes. MIP Mapping Sample every nth point of the texture image? (get aliasing) Average n points to get one point? (costly)...
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This note was uploaded on 03/02/2012 for the course C S 455 taught by Professor Jones,m during the Winter '08 term at BYU.

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Lecture20a-LOD-in-texture-mapping - (get aliasing Average n...

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