[gegl] gegl/buffer: dead code removal in nohalo

[Øyvind Kolås <ok src gnome org>]

commit 025ff7e3b66ed9bf55e4d9504545f4474d83a87e
Author: Øyvind Kolås <pippin gimp org>
Date:   Mon Oct 23 17:12:28 2017 +0200

    gegl/buffer: dead code removal in nohalo
    
    Remnants of removed and buggy GeglBuffer mipmap awareness in resampler.

 gegl/buffer/gegl-sampler-nohalo.c |  115 -------------------------------------
 1 files changed, 0 insertions(+), 115 deletions(-)
---
diff --git a/gegl/buffer/gegl-sampler-nohalo.c b/gegl/buffer/gegl-sampler-nohalo.c
index 09aa747..858dc32 100644
--- a/gegl/buffer/gegl-sampler-nohalo.c
+++ b/gegl/buffer/gegl-sampler-nohalo.c
@@ -280,40 +280,6 @@ gegl_sampler_nohalo_class_init (GeglSamplerNohaloClass *klass)
 #define NOHALO_SIZE_0 (1+2*NOHALO_OFFSET_0)
 
 /*
- * The higher mipmap context_rects must be set so that there is at
- * least one higher mipmap pixel location within the higher
- * context_rect but outside the lower context_rect, irregardless of
- * the alignment at the sampling location. I (Nicolas) have not taken
- * the time to find the exact inequality that must be respected so
- * that the do whiles word properly. Almost certainly, the higher
- * mipmap level's offset should almost never be smaller than half the
- * previous level's offset.
- */
-#define NOHALO_OFFSET_MIPMAP (13)
-#define NOHALO_SIZE_MIPMAP (1+2*NOHALO_OFFSET_MIPMAP)
-
-#define NOHALO_OFFSET_1 NOHALO_OFFSET_MIPMAP
-#define NOHALO_SIZE_1   NOHALO_SIZE_MIPMAP
-
-#define NOHALO_OFFSET_2 NOHALO_OFFSET_MIPMAP
-#define NOHALO_SIZE_2   NOHALO_SIZE_MIPMAP
-
-#define NOHALO_OFFSET_3 NOHALO_OFFSET_MIPMAP
-#define NOHALO_SIZE_3   NOHALO_SIZE_MIPMAP
-
-#define NOHALO_OFFSET_4 NOHALO_OFFSET_MIPMAP
-#define NOHALO_SIZE_4   NOHALO_SIZE_MIPMAP
-
-#define NOHALO_OFFSET_5 NOHALO_OFFSET_MIPMAP
-#define NOHALO_SIZE_5   NOHALO_SIZE_MIPMAP
-
-#define NOHALO_OFFSET_6 NOHALO_OFFSET_MIPMAP
-#define NOHALO_SIZE_6   NOHALO_SIZE_MIPMAP
-
-#define NOHALO_OFFSET_7 (GEGL_SAMPLER_MAXIMUM_HEIGHT/2-1)
-#define NOHALO_SIZE_7   (GEGL_SAMPLER_MAXIMUM_HEIGHT)
-
-/*
  * Nohalo always uses some mipmap level 0 values, but not always
  * higher mipmap values.
  */
@@ -329,48 +295,6 @@ gegl_sampler_nohalo_init (GeglSamplerNohalo *self)
   level->context_rect.width  = NOHALO_SIZE_0;
   level->context_rect.height = NOHALO_SIZE_0;
 
-  level = &sampler->level[1];
-  level->context_rect.x   = -NOHALO_OFFSET_1;
-  level->context_rect.y   = -NOHALO_OFFSET_1;
-  level->context_rect.width  = NOHALO_SIZE_1;
-  level->context_rect.height = NOHALO_SIZE_1;
-
-  level = &sampler->level[2];
-  level->context_rect.x   = -NOHALO_OFFSET_2;
-  level->context_rect.y   = -NOHALO_OFFSET_2;
-  level->context_rect.width  = NOHALO_SIZE_2;
-  level->context_rect.height = NOHALO_SIZE_2;
-
-  level = &sampler->level[3];
-  level->context_rect.x   = -NOHALO_OFFSET_3;
-  level->context_rect.y   = -NOHALO_OFFSET_3;
-  level->context_rect.width  = NOHALO_SIZE_3;
-  level->context_rect.height = NOHALO_SIZE_3;
-
-  level = &sampler->level[4];
-  level->context_rect.x   = -NOHALO_OFFSET_4;
-  level->context_rect.y   = -NOHALO_OFFSET_4;
-  level->context_rect.width  = NOHALO_SIZE_4;
-  level->context_rect.height = NOHALO_SIZE_4;
-
-  level = &sampler->level[5];
-  level->context_rect.x   = -NOHALO_OFFSET_5;
-  level->context_rect.y   = -NOHALO_OFFSET_5;
-  level->context_rect.width  = NOHALO_SIZE_5;
-  level->context_rect.height = NOHALO_SIZE_5;
-
-  level = &sampler->level[6];
-  level->context_rect.x   = -NOHALO_OFFSET_6;
-  level->context_rect.y   = -NOHALO_OFFSET_6;
-  level->context_rect.width  = NOHALO_SIZE_6;
-  level->context_rect.height = NOHALO_SIZE_6;
-
-  level = &sampler->level[7];
-  level->context_rect.x   = -NOHALO_OFFSET_7;
-  level->context_rect.y   = -NOHALO_OFFSET_7;
-  level->context_rect.width  = NOHALO_SIZE_7;
-  level->context_rect.height = NOHALO_SIZE_7;
-
   GEGL_SAMPLER (self)->interpolate_format = gegl_babl_rgbA_linear_float ();
 }
 
@@ -1291,45 +1215,6 @@ ewa_update (const gint              j,
   ewa_newval[3] += weight * input_ptr[ skip + 3 ];
 }
 
-static inline void
-mipmap_ewa_update (const gint              level,
-                   const gint              j,
-                   const gint              i,
-                   const gfloat            c_major_x,
-                   const gfloat            c_major_y,
-                   const gfloat            c_minor_x,
-                   const gfloat            c_minor_y,
-                   const gfloat            x,
-                   const gfloat            y,
-                   const gint              channels,
-                   const gint              row_skip,
-                   const gfloat*  restrict input_ptr,
-                         gdouble* restrict total_weight,
-                         gfloat*  restrict ewa_newval)
-{
-  const gint skip = j * channels + i * row_skip;
-
-  /*
-   * The factor of "2^(level+1)" = "2 << level" is because level
-   * mipmap values are averages of that many level 0 pixel values, and
-   * the "1 << level" factor in the index is because the absolute
-   * positions are correspondingly "stretched".
-   */
-  const gfloat weight = (gfloat) ( 2 << level ) *
-                        teepee (c_major_x,
-                                c_major_y,
-                                c_minor_x,
-                                c_minor_y,
-                                x - (gfloat) ( (gint) ( 1 << level ) * j),
-                                y - (gfloat) ( (gint) ( 1 << level ) * i));
-
-  *total_weight += weight;
-  ewa_newval[0] += weight * input_ptr[ skip     ];
-  ewa_newval[1] += weight * input_ptr[ skip + 1 ];
-  ewa_newval[2] += weight * input_ptr[ skip + 2 ];
-  ewa_newval[3] += weight * input_ptr[ skip + 3 ];
-}
-
 static void
 gegl_sampler_nohalo_get (      GeglSampler*    restrict  self,
                          const gdouble                   absolute_x,