From 2439e67fd02a8815534eaddb849ddd27173cc349 Mon Sep 17 00:00:00 2001
From: meh <meh@schizofreni.co>
Date: Mon, 8 Jun 2015 15:52:45 +0200
Subject: [PATCH] software/scaling/context: allocate the output if it's empty

---
 src/software/scaling/context.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/software/scaling/context.rs b/src/software/scaling/context.rs
index 2c722d9..842c20d 100644
--- a/src/software/scaling/context.rs
+++ b/src/software/scaling/context.rs
@@ -100,6 +100,12 @@ impl Context {
 		if input.format() != self.input.format || input.width() != self.input.width || input.height() != self.input.height {
 			return Err(Error::InputChanged);
 		}
+		
+		unsafe {
+			if output.is_empty() {
+				output.alloc(self.output.format, self.output.width, self.output.height);
+			}
+		}
 
 		if output.format() != self.output.format || output.width() != self.output.width || output.height() != self.output.height {
 			return Err(Error::OutputChanged);