From 7d879f7cbde8cd6aac77f513cba7bf2b803ba652 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Sat, 12 Feb 2011 10:13:53 -0800
Subject: [PATCH] The YV12 image isn't w*h*2, it's actually w*h + w*h/4 + w*h/4

---
 src/render/SDL_yuv_sw.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/render/SDL_yuv_sw.c b/src/render/SDL_yuv_sw.c
index 40eaed3ed..43fbfc840 100644
--- a/src/render/SDL_yuv_sw.c
+++ b/src/render/SDL_yuv_sw.c
@@ -1127,7 +1127,8 @@ SDL_SW_UpdateYUVTexture(SDL_SW_YUVTexture * swdata, const SDL_Rect * rect,
                 ("YV12 and IYUV textures only support full surface updates");
             return -1;
         }
-        SDL_memcpy(swdata->pixels, pixels, swdata->h * swdata->w * 2);
+        SDL_memcpy(swdata->pixels, pixels,
+                   (swdata->h * swdata->w) + (swdata->h * swdata->w) / 2);
         break;
     case SDL_PIXELFORMAT_YUY2:
     case SDL_PIXELFORMAT_UYVY: