From 9b907dd65a2c045d10605894fdaea504200e2be7 Mon Sep 17 00:00:00 2001
From: Perttu Ahola <celeron55@gmail.com>
Date: Tue, 18 Oct 2011 21:08:31 +0300
Subject: [PATCH] Try to tune fog to work well on high-end machines also

---
 src/camera.cpp          |  4 ++--
 src/defaultsettings.cpp |  1 +
 src/game.cpp            | 11 ++++++++---
 src/map.cpp             | 12 ++++++------
 4 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/src/camera.cpp b/src/camera.cpp
index ecb5a17f..a3233671 100644
--- a/src/camera.cpp
+++ b/src/camera.cpp
@@ -342,7 +342,7 @@ void Camera::updateViewingRange(f32 frametime_in)
 			<<std::endl;*/
 
 	m_draw_control.wanted_min_range = m_viewing_range_min;
-	m_draw_control.wanted_max_blocks = (1.5*m_draw_control.blocks_would_have_drawn)+1;
+	m_draw_control.wanted_max_blocks = (2.0*m_draw_control.blocks_would_have_drawn)+1;
 	if (m_draw_control.wanted_max_blocks < 10)
 		m_draw_control.wanted_max_blocks = 10;
 
@@ -366,7 +366,7 @@ void Camera::updateViewingRange(f32 frametime_in)
 	// If needed frametime change is small, just return
 	// This value was 0.4 for many months until 2011-10-18 by c55;
 	// Let's see how this works out.
-	if (fabs(wanted_frametime_change) < m_wanted_frametime*0.25)
+	if (fabs(wanted_frametime_change) < m_wanted_frametime*0.33)
 	{
 		//dstream<<"ignoring small wanted_frametime_change"<<std::endl;
 		return;
diff --git a/src/defaultsettings.cpp b/src/defaultsettings.cpp
index b05d060a..d8844081 100644
--- a/src/defaultsettings.cpp
+++ b/src/defaultsettings.cpp
@@ -45,6 +45,7 @@ void set_default_settings(Settings *settings)
 	settings->setDefault("keymap_frametime_graph", "KEY_F1");
 	settings->setDefault("keymap_screenshot", "KEY_F12");
 	settings->setDefault("keymap_toggle_profiler", "KEY_F2");
+	settings->setDefault("keymap_toggle_force_fog_off", "KEY_F3");
 	// Some (temporary) keys for debugging
 	settings->setDefault("keymap_print_debug_stacks", "KEY_KEY_P");
 
diff --git a/src/game.cpp b/src/game.cpp
index e3380ace..c67660ec 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -952,6 +952,8 @@ void the_game(
 
 	bool show_profiler = false;
 
+	bool force_fog_off = false;
+
 	/*
 		Main loop
 	*/
@@ -1323,6 +1325,10 @@ void the_game(
 			show_profiler = !show_profiler;
 			guitext_profiler->setVisible(show_profiler);
 		}
+		else if(input->wasKeyDown(getKeySetting("keymap_toggle_force_fog_off")))
+		{
+			force_fog_off = !force_fog_off;
+		}
 
 		// Item selection with mouse wheel
 		{
@@ -1971,7 +1977,7 @@ void the_game(
 			Fog
 		*/
 		
-		if(g_settings->getBool("enable_fog") == true)
+		if(g_settings->getBool("enable_fog") == true && !force_fog_off)
 		{
 			f32 range;
 			if(farmesh)
@@ -1981,12 +1987,11 @@ void the_game(
 			else
 			{
 				range = draw_control.wanted_range*BS + MAP_BLOCKSIZE*BS*1.5;
+				range *= 0.9;
 				if(draw_control.range_all)
 					range = 100000*BS;
 				/*if(range < 50*BS)
 					range = range * 0.5 + 25*BS;*/
-				// Move the invisible limit a bit further
-				//range *= 1.2;
 			}
 
 			driver->setFog(
diff --git a/src/map.cpp b/src/map.cpp
index febc40dd..ba4130ca 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -3659,13 +3659,13 @@ void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 	// Take a fair amount as we will be dropping more out later
 	// Umm... these additions are a bit strange but they are needed.
 	v3s16 p_blocks_min(
-			p_nodes_min.X / MAP_BLOCKSIZE - 2,
-			p_nodes_min.Y / MAP_BLOCKSIZE - 2,
-			p_nodes_min.Z / MAP_BLOCKSIZE - 2);
+			p_nodes_min.X / MAP_BLOCKSIZE - 3,
+			p_nodes_min.Y / MAP_BLOCKSIZE - 3,
+			p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 	v3s16 p_blocks_max(
-			p_nodes_max.X / MAP_BLOCKSIZE + 0,
-			p_nodes_max.Y / MAP_BLOCKSIZE + 0,
-			p_nodes_max.Z / MAP_BLOCKSIZE + 0);
+			p_nodes_max.X / MAP_BLOCKSIZE + 1,
+			p_nodes_max.Y / MAP_BLOCKSIZE + 1,
+			p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 	
 	u32 vertex_count = 0;
 	u32 meshbuffer_count = 0;