From f52db6fbdab394f19d99c40e7cd15a7ed8cfcca3 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@lokigames.com>
Date: Mon, 25 Jun 2001 22:16:44 +0000
Subject: [PATCH] Added the SDL_VIDEO_YUV_DIRECT hack for better performance
 when the requested video mode is 16 bpp but the real video mode is 32 bpp.

---
 src/video/SDL_yuv.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/video/SDL_yuv.c b/src/video/SDL_yuv.c
index 4e83f282e..7a2fb2536 100644
--- a/src/video/SDL_yuv.c
+++ b/src/video/SDL_yuv.c
@@ -48,13 +48,13 @@ SDL_Overlay *SDL_CreateYUVOverlay(int w, int h, Uint32 format,
 	overlay = NULL;
 
 	/* Display directly on video surface, if possible */
-#if 0
-	if ( (display == SDL_PublicSurface) &&
-	     ((SDL_VideoSurface->format->BytesPerPixel == 2) ||
-	      (SDL_VideoSurface->format->BytesPerPixel == 4)) ) {
-		display = SDL_VideoSurface;
+	if ( getenv("SDL_VIDEO_YUV_DIRECT") ) {
+		if ( (display == SDL_PublicSurface) &&
+		     ((SDL_VideoSurface->format->BytesPerPixel == 2) ||
+		      (SDL_VideoSurface->format->BytesPerPixel == 4)) ) {
+			display = SDL_VideoSurface;
+		}
 	}
-#endif
         yuv_hwaccel = getenv("SDL_VIDEO_YUV_HWACCEL");
 	if ( ((display == SDL_VideoSurface) && video->CreateYUVOverlay) &&
 	     (!yuv_hwaccel || (atoi(yuv_hwaccel) > 0)) ) {