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-rw-r--r--raster/render.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/raster/render.c b/raster/render.c
index 6a69308b..6f649473 100644
--- a/raster/render.c
+++ b/raster/render.c
@@ -375,7 +375,7 @@ DEBUG("image %dx%d %d+%d %s\n{\n", image->w, image->h, image->n, image->a, image
calcimagescale(ctm, image->w, image->h, &dx, &dy);
/* y-banded loading/scaling of image, more cache-friendly */
- int tileheight = MAX(512*1024/(image->w * image->n), dy);
+ tileheight = MAX(512*1024/(image->w * (image->n + image->a)), dy);
if ((dx != 1 || dy != 1) && image->h > tileheight) {
int y = 0;