From 2ca06e3e0a023ce4f55e2aab262c2c877f7af4b7 Mon Sep 17 00:00:00 2001
From: Fabio Battaglia
Date: Sun, 21 Feb 2010 19:02:45 +0000
Subject: N64: force screen update after hiding overlay

svn-id: r48108
---
 backends/platform/n64/osys_n64_base.cpp | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

(limited to 'backends/platform/n64/osys_n64_base.cpp')

diff --git a/backends/platform/n64/osys_n64_base.cpp b/backends/platform/n64/osys_n64_base.cpp
index 2ee99d2ddc..cde5208bda 100644
--- a/backends/platform/n64/osys_n64_base.cpp
+++ b/backends/platform/n64/osys_n64_base.cpp
@@ -83,6 +83,8 @@ OSystem_N64::OSystem_N64() {
 	// Max FPS
 	_maxFps = N64_NTSC_FPS;
 
+	_disableFpsLimit = false;
+
 	_overlayVisible = false;
 
 	_shakeOffset = 0;
@@ -486,11 +488,13 @@ void OSystem_N64::copyRectToScreen(const byte *buf, int pitch, int x, int y, int
 void OSystem_N64::updateScreen() {
 #ifdef LIMIT_FPS
 	static uint32 _lastScreenUpdate = 0;
-	uint32 now = getMillis();
-	if (now - _lastScreenUpdate < 1000 / _maxFps)
-		return;
+	if (!_disableFpsLimit) {
+		uint32 now = getMillis();
+		if (now - _lastScreenUpdate < 1000 / _maxFps)
+			return;
 
-	_lastScreenUpdate = now;
+		_lastScreenUpdate = now;
+	}
 #endif
 
 	// Check if audio buffer needs refill
@@ -647,6 +651,14 @@ void OSystem_N64::hideOverlay() {
 	clearAllVideoBuffers();
 
 	_dirtyOffscreen = true;
+
+	// Force TWO screen updates (because of double buffered display).
+	// This way games which won't automatically update the screen
+	// when overlay is disabled, won't show a black screen. (eg. Lure)
+	_disableFpsLimit = true;
+	updateScreen();
+	updateScreen();
+	_disableFpsLimit = false;
 }
 
 void OSystem_N64::clearOverlay() {
-- 
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