From: Leon Brocard <acme@astray.com>
Date: Sat, 10 Oct 2009 10:36:14 +0000 (+0100)
Subject: Add display_format_alpha
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=c0a5147b5c991adf442789ca94e6ee0119b7eb18;p=sdlgit%2FSDL_perl.git

Add display_format_alpha
---

diff --git a/lib/SDL/Surface.pm b/lib/SDL/Surface.pm
index 897234c..4485824 100644
--- a/lib/SDL/Surface.pm
+++ b/lib/SDL/Surface.pm
@@ -239,6 +239,14 @@ sub display_format {
 	$self;
 }
 
+sub display_format_alpha {
+	my $self = shift;
+	my $tmp = SDL::DisplayFormatAlpha($$self);
+	SDL::FreeSurface ($$self);
+	$$self = $tmp;
+	$self;
+}
+
 sub rgb {
 	my $self = shift;
 	my $tmp = SDL::ConvertRGB($$self);
@@ -525,6 +533,11 @@ C<alpha> takes a value from 0x00 to 0xff.
 C<SDL::Surface::display_format> converts the surface to the same format as the
 current screen.
 
+=head2 display_format_alpha ()
+
+C<SDL::Surface::display_format_alpha> converts the surface to the same format as the
+current screen, plus an alpha channel.
+
 =head2 rgb ()
 
 C<SDL::Surface::rgb> converts the surface to a 24 bit rgb format regardless of the initial format.