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Nintendo® Confidential

## gDPSetTextureLOD [macro]

Enables/disables LOD (MIP-map) textures.

Syntax

    #include <ultra64.h>  /* gbi.h */
    gDPSetTextureLOD(Gfx *gdl, u32 mode)
    gsDPSetTextureLOD( u32 mode)

Arguments

- gdl is the display list pointer.

- mode is the texture mode.
  G_TL_TILE (LOD tile selection OFF)
  G_TL_LOD(LOD tile selection ON)

Explanation
Enables/disables texture sampling of LOD (MIP-map) textures.

The texture modes are explained below:

G_TL_TILE
  Turns LOD tile selection OFF.
  In 1-cycle mode, the tile selected with gSPTexture is used for texture processing. In 2-cycle mode, the color combiner (CC) receives texels from both the tile selected with gSPTexture and from that tile + 1. This pair of texture tiles can be used as a dual-texture tile.
G_TL_LOD
  Selects a pair of tiles from a series of texture tiles.
  LOD determines which pair of tiles will be selected. The CC uses texels sampled from this pair of tiles to perform MIP-mapping. Linear interpolation is performed on the two texel samples using the LOD factor in order to create the final MIP-mapped texel.

For details, please see Section 12.4.6, "Texture-Sampling Modes," and Section 13.7.2, "LOD Disabled" and 13.7.3, "LOD Enabled,"in the N64 Online Programming Manual.

See Also
gDPSetCombineMode
gDPSetTextureDetail
gDPSetTextureLUT
gDPSetTexturePersp
gSPTexture

Revision History
2/1/99 Completely rewritten.

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Last Updated April, 1999