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changeset 779:8e9481bf1cc0

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Avoid float divide to improve performance
author Thinker K.F. Li <thinker@codemud.net>
date Mon, 30 Aug 2010 13:43:01 +0800
parents 61c217f8cec8
children 16d8a1d48717
files src/coord.c src/shape_image.c
diffstat 2 files changed, 8 insertions(+), 10 deletions(-) [+]
line wrap: on
line diff
--- a/src/coord.c	Mon Aug 30 13:07:49 2010 +0800
+++ b/src/coord.c	Mon Aug 30 13:43:01 2010 +0800
@@ -144,12 +144,14 @@
     reverse[2] = -working[2];
     reverse[5] = -working[5];
 
-    reverse[0] /= working[0];
-    reverse[1] /= working[0];
-    reverse[2] /= working[0];
-    reverse[3] /= working[4];
-    reverse[4] /= working[4];
-    reverse[5] /= working[4];
+    factor = 1 / working[0];
+    reverse[0] *= factor;
+    reverse[1] *= factor;
+    reverse[2] *= factor;
+    factor = 1 / working[4];
+    reverse[3] *= factor;
+    reverse[4] *= factor;
+    reverse[5] *= factor;
 }
 
 /*! \brief Update aggregate matrices of elements under a sub-tree.
--- a/src/shape_image.c	Mon Aug 30 13:07:49 2010 +0800
+++ b/src/shape_image.c	Mon Aug 30 13:43:01 2010 +0800
@@ -70,8 +70,6 @@
 shape_t *rdman_shape_image_new(redraw_man_t *rdman,
 			       co_aix x, co_aix y, co_aix w, co_aix h) {
     sh_image_t *img;
-    mb_img_fmt_t fmt;
-    int r;
 
     img = O_ALLOC(sh_image_t);
     if(img == NULL)
@@ -158,8 +156,6 @@
  */
 void sh_image_draw(shape_t *shape, mbe_t *cr) {
     sh_image_t *img = (sh_image_t *)shape;
-    mbe_pattern_t *saved_source;
-    co_aix *aggr;
     
     mbe_move_to(cr, img->poses[0][0], img->poses[0][1]);
     mbe_line_to(cr, img->poses[1][0], img->poses[1][1]);