Add libglitter_reorder_rasters

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 15 insertions, 0 deletions

diff --git a/libglitter_reorder_rasters.c b/libglitter_reorder_rasters.c
new file mode 100644
index 0000000..5df590e
--- /dev/null
+++ b/libglitter_reorder_rasters.c
@@ -0,0 +1,15 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+void
+libglitter_reorder_rasters(void **rasters, enum libglitter_colour colour1,
+                           enum libglitter_colour colour2, enum libglitter_colour colour3)
+{
+	void *channel1 = rasters[colour1];
+	void *channel2 = rasters[colour2];
+	void *channel3 = rasters[colour3];
+	rasters[0] = channel1;
+	rasters[1] = channel2;
+	rasters[2] = channel3;
+}