From a5e0b24a066ee9009a20eaf21694cbb9ecd5765e Mon Sep 17 00:00:00 2001
From: avolkov <avolkov@8092fc87-c524-0410-9efc-e669fe64eaf9>
Date: Sat, 16 Jan 2010 21:56:46 +0000
Subject: [PATCH] Fixed concurrent fades regression; bug #1079

git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@3499 8092fc87-c524-0410-9efc-e669fe64eaf9
---
 sc2/ChangeLog                |  1 +
 sc2/src/libs/graphics/cmap.c | 12 ++++++++++--
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/sc2/ChangeLog b/sc2/ChangeLog
index 6016d1a38..b5dbd06dd 100644
--- a/sc2/ChangeLog
+++ b/sc2/ChangeLog
@@ -1,4 +1,5 @@
 Changes towards version 0.7:
+- Fixed concurrent screen fades regression (bug #1079) - Alex
 - Removed some legacy source code files related to resources - SvdB
 - Put SuperMelee source files in separate subdirectory - SvdB
 - Added additive and alpha drawing modes to graphics lib - Alex
diff --git a/sc2/src/libs/graphics/cmap.c b/sc2/src/libs/graphics/cmap.c
index d6c0d6576..9deca4c77 100644
--- a/sc2/src/libs/graphics/cmap.c
+++ b/sc2/src/libs/graphics/cmap.c
@@ -347,14 +347,20 @@ GetFadeAmount (void)
 }
 
 static void
-FlushFadeXForms (void)
+finishPendingFade (void)
 {
-	LockMutex (XFormControl.Lock);
 	if (fadeInterval)
 	{	// end the fade immediately
 		fadeAmount += fadeDelta;
 		fadeInterval = 0;
 	}
+}
+
+static void
+FlushFadeXForms (void)
+{
+	LockMutex (XFormControl.Lock);
+	finishPendingFade ();
 	UnlockMutex (XFormControl.Lock);
 }
 
@@ -388,6 +394,8 @@ FadeScreen (ScreenFadeType fadeType, SIZE TimeInterval)
 
 	LockMutex (XFormControl.Lock);
 
+	finishPendingFade ();
+
 	if (TimeInterval <= 0)
 	{	// end the fade immediately
 		fadeAmount = FadeEnd;