6 files changed, 12 insertions, 31 deletions

diff --git a/flam3.c b/flam3.c
index 74a4cc7..38d41b1 100644
--- a/flam3.c
+++ b/flam3.c
@@ -3081,11 +3081,11 @@ int flam3_estimate_bounding_box(flam3_genome *cp, double eps, int nsamples,
 }
 
 int flam3_render(flam3_frame *spec, void *out,
-        int field, stat_struct *stats) {
+        stat_struct *stats) {
          
   int retval;
   
-  retval = render_rectangle (spec, out, field, stats);
+  retval = render_rectangle (spec, out, stats);
   return(retval);
 }
 
diff --git a/flam3.h b/flam3.h
index de082fd..3c7b860 100644
--- a/flam3.h
+++ b/flam3.h
@@ -582,13 +582,9 @@ typedef struct {
 } flam3_frame;
 
 
-#define flam3_field_both  0
-#define flam3_field_even  1
-#define flam3_field_odd   2
-
 /* out is pixel array.  pixels are rgba */
 int flam3_render(flam3_frame *spec, void *out,
-        int field, stat_struct *stats);
+        stat_struct *stats);
 
 void rotate_by(double *p, double *center, double by);
 
diff --git a/main.c b/main.c
index 7a24e82..63384e3 100644
--- a/main.c
+++ b/main.c
@@ -133,7 +133,7 @@ static void do_render (const render_arguments * const arguments) {
 	void *image = (void *) calloc(this_size, sizeof(char));
 
 	stat_struct stats;
-	if (flam3_render (&f, image, flam3_field_both, &stats)) {
+	if (flam3_render (&f, image, &stats)) {
 		fprintf(stderr,"error rendering image: aborting.\n");
 		exit(1);
 	}
diff --git a/palettes.c b/palettes.c
index 6154054..77f3142 100644
--- a/palettes.c
+++ b/palettes.c
@@ -382,7 +382,7 @@ static double try_colors(flam3_genome *g, int color_resolution) {
     f.sub_batch_size = 10000;
         
     image = (unsigned char *) calloc(g->width * g->height, 3);
-    if (flam3_render(&f, image, flam3_field_both, &stats)) {
+    if (flam3_render(&f, image, &stats)) {
        fprintf(stderr,"Error rendering test image for trycolors.  Aborting.\n");
        return(-1);
     }
diff --git a/rect.c b/rect.c
index e6d02aa..e2197f4 100644
--- a/rect.c
+++ b/rect.c
@@ -284,7 +284,7 @@ static double4 clip (const double4 in, const double g, const double linrange,
 }
 
 int render_rectangle(flam3_frame *spec, void *out,
-			     int field, stat_struct *stats) {
+			     stat_struct *stats) {
    long nbuckets;
    int i, j, k;
    double ppux=0, ppuy=0;
@@ -339,15 +339,7 @@ int render_rectangle(flam3_frame *spec, void *out,
    const unsigned int channels = 4;
    image_width = cp.width;
    out_width = image_width;
-   if (field) {
-      image_height = cp.height / 2;
-      
-      if (field == flam3_field_odd)
-         out = (unsigned char *)out + channels * bytes_per_channel * out_width;
-         
-      out_width *= 2;
-   } else
-      image_height = cp.height;
+   image_height = cp.height;
 
    /* Allocate the space required to render the image */
    fic.height = image_height;
@@ -405,7 +397,7 @@ int render_rectangle(flam3_frame *spec, void *out,
 
          /* compute camera */
          {
-            double shift=0.0, corner0, corner1;
+            double corner0, corner1;
             double scale;
 
             if (cp.sample_density <= 0.0) {
@@ -419,20 +411,14 @@ int render_rectangle(flam3_frame *spec, void *out,
             sample_density = cp.sample_density * scale * scale;
 
             ppux = cp.pixels_per_unit * scale;
-            ppuy = field ? (ppux / 2.0) : ppux;
+            ppuy = ppux;
             ppux /=  spec->pixel_aspect_ratio;
-            switch (field) {
-               case flam3_field_both: shift =  0.0; break;
-               case flam3_field_even: shift = -0.5; break;
-               case flam3_field_odd:  shift =  0.5; break;
-            }
-            shift = shift / ppux;
             corner0 = cp.center[0] - image_width / ppux / 2.0;
             corner1 = cp.center[1] - image_height / ppuy / 2.0;
             fic.bounds[0] = corner0;
-            fic.bounds[1] = corner1 + shift;
+            fic.bounds[1] = corner1;
             fic.bounds[2] = corner0 + image_width  / ppux;
-            fic.bounds[3] = corner1 + image_height / ppuy + shift;
+            fic.bounds[3] = corner1 + image_height / ppuy;
             fic.size[0] = 1.0 / (fic.bounds[2] - fic.bounds[0]);
             fic.size[1] = 1.0 / (fic.bounds[3] - fic.bounds[1]);
 			rotate_center ((double2) { cp.rot_center[0], cp.rot_center[1] },
diff --git a/rect.h b/rect.h
index 2d40713..7ec2a3b 100644
--- a/rect.h
+++ b/rect.h
@@ -1,5 +1,4 @@
 #pragma once
 
-int render_rectangle(flam3_frame *spec, void *out,
-			     int field, stat_struct *stats);
+int render_rectangle(flam3_frame *spec, void *out, stat_struct *stats);