From afb6ebd21e8296f7f49a49161e38cf2414ffbf3e Mon Sep 17 00:00:00 2001
From: Jeroen van Rijn <Kelimion@users.noreply.github.com>
Date: Tue, 4 May 2021 17:48:43 +0200
Subject: [PATCH] Fix gray+alpha alpha extract.

---
 core/image/common.odin | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/core/image/common.odin b/core/image/common.odin
index e92060ed2..9024ec769 100644
--- a/core/image/common.odin
+++ b/core/image/common.odin
@@ -150,15 +150,15 @@ return_single_channel :: proc(img: ^Image, channel: Channel) -> (res: ^Image, ok
 
 	idx := int(channel);
 
-	if idx > img.channels {
-		return {}, false;
-	}
-
 	if img.channels == 2 && idx == 4 {
 		// Alpha requested, which in a two channel image is index 2: G.
 		idx = 2;
 	}
 
+	if idx > img.channels {
+		return {}, false;
+	}
+
 	switch(img.depth) {
 		case 8:
 			buffer_size := compute_buffer_size(img.width, img.height, 1, 8);