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-rw-r--r--src/mesa/swrast/s_texfilter.c44
1 files changed, 1 insertions, 43 deletions
diff --git a/src/mesa/swrast/s_texfilter.c b/src/mesa/swrast/s_texfilter.c
index 3ccabf249b7..4f9e102ca84 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