Controls the texture filter unit and converts the color
#include "gbi.h" gDPSetTextureConvert(Gfx *gdl, unsigned int type) gsDPSetTextureConvert( unsigned int type)
This macro controls the texture filter unit, selecting whether the output should be filtered (G_TC_FILT), color-converted from YUV to RGB (G_TC_CONV), or both color-converted and filtered (G_TC_FILTCONV).
The default hardware state (mode bits all 0s) represents G_TC_CONV, which is not a very good default state because it is rarely used.
A common bug is to have your filtered, textured, display list completed, yet the texture still looks incorrect due to a missing G_TC_FILT, which inadvertently color-converts the texture.