diff options
| -rw-r--r-- | src/mesa/swrast/s_texfilter.c | 44 |
1 files changed, 1 insertions, 43 deletions
diff --git a/src/mesa/swrast/s_texfilter.c b/src/mesa/swrast/s_texfilter.c index 6e4144823a..d84f37e576 100644 --- a/src/mesa/swrast/s_texfilter.c +++ b/src/mesa/swrast/s_texfilter.c @@ -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) ) /** @@ -76,21 +69,6 @@ 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 */ @@ -110,26 +88,6 @@ 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. */ static INLINE void |