From 839457cc5dff55b06e9c8b07751d0398a61ef554 Mon Sep 17 00:00:00 2001
From: Ben Wiley Sittler <bsittler@gmail.com>
Date: Tue, 4 Nov 2008 23:54:38 +0000
Subject: [PATCH] use alpha in PNG export, since it is now required to get a
 correct PNG output image

---
 caca-php/examples/export.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/caca-php/examples/export.php b/caca-php/examples/export.php
index fe1c473..a14407c 100755
--- a/caca-php/examples/export.php
+++ b/caca-php/examples/export.php
@@ -26,6 +26,8 @@ define('WIDTH', 80);
 define('HEIGHT', 32);
 
 $pixels = imagecreatetruecolor(256, 256);
+imagealphablending($pixels, false);
+imagesavealpha($pixels, true);
 
 $exports = caca_get_export_list();
 
@@ -78,7 +80,7 @@ else
 			$r = $x;
 			$g = (255 - $y + $x) / 2;
 			$b = $y * (255 - $x) / 256;
-			imagesetpixel($pixels, $x, $y, imagecolorallocate($pixels, $r, $g, $b));
+			imagesetpixel($pixels, $x, $y, imagecolorallocatealpha($pixels, $r, $g, $b, 127));
 		}
 	}