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-rw-r--r--src/backend_libpng.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/backend_libpng.c b/src/backend_libpng.c
index 0e58b6f..2c3b1d7 100644
--- a/src/backend_libpng.c
+++ b/src/backend_libpng.c
@@ -149,8 +149,9 @@ static enum backend_result open_path(const char *path, struct imv_source **src)
png_set_sig_bytes(private->png, sizeof header);
png_read_info(private->png, private->info);
+ /* Tell libpng to give us a consistent output format */
png_set_gray_to_rgb(private->png);
-
+ png_set_filler(private->png, 0xff, PNG_FILLER_AFTER);
png_read_update_info(private->png, private->info);
struct imv_source *source = calloc(1, sizeof(struct imv_source));