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swrast: remove unused integer lerp functions

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This commit is contained in:
Brian Paul 2009-03-12 21:22:45 -06:00
parent 7fbae9f41d
commit bd32640f77
1 changed files with 1 additions and 43 deletions
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44
src/mesa/swrast/s_texfilter.c
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@ -43,18 +43,11 @@
#define FRAC(f) ((f) - IFLOOR(f))
/**
* Constants for integer linear interpolation.
*/
#define ILERP_SCALE 65536.0F
#define ILERP_SHIFT 16
/**
* Linear interpolation macros
* Linear interpolation macro
*/
#define LERP(T, A, B) ( (A) + (T) * ((B) - (A)) )
#define ILERP(IT, A, B) ( (A) + (((IT) * ((B) - (A))) >> ILERP_SHIFT) )
/**
@ -75,21 +68,6 @@ lerp_2d(GLfloat a, GLfloat b,
}
/**
* Do 2D/biliner interpolation of integer values.
* \sa lerp_2d
*/
static INLINE GLint
ilerp_2d(GLint ia, GLint ib,
GLint v00, GLint v10, GLint v01, GLint v11)
{
/* fixed point interpolants in [0, ILERP_SCALE] */
const GLint temp0 = ILERP(ia, v00, v10);
const GLint temp1 = ILERP(ia, v01, v11);
return ILERP(ib, temp0, temp1);
}
/**
* Do 3D/trilinear interpolation of float values.
* \sa lerp_2d
@ -109,26 +87,6 @@ lerp_3d(GLfloat a, GLfloat b, GLfloat c,
}
/**
* Do 3D/trilinear interpolation of integer values.
* \sa lerp_2d
*/
static INLINE GLint
ilerp_3d(GLint ia, GLint ib, GLint ic,
GLint v000, GLint v100, GLint v010, GLint v110,
GLint v001, GLint v101, GLint v011, GLint v111)
{
/* fixed point interpolants in [0, ILERP_SCALE] */
const GLint temp00 = ILERP(ia, v000, v100);
const GLint temp10 = ILERP(ia, v010, v110);
const GLint temp01 = ILERP(ia, v001, v101);
const GLint temp11 = ILERP(ia, v011, v111);
const GLint temp0 = ILERP(ib, temp00, temp10);
const GLint temp1 = ILERP(ib, temp01, temp11);
return ILERP(ic, temp0, temp1);
}
/**
* Do linear interpolation of colors.
*/