Move client-specific files to 'src/client' (#7902)

Update Android.mk
Remove 'src/client' from include_directories

1 files changed, 1389 insertions, 0 deletions

diff --git a/src/client/mapblock_mesh.cpp b/src/client/mapblock_mesh.cpp
new file mode 100644
index 000000000..ed8a073de
--- /dev/null
+++ b/src/client/mapblock_mesh.cpp
@@ -0,0 +1,1389 @@
+/*
+Minetest
+Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "mapblock_mesh.h"
+#include "client.h"
+#include "mapblock.h"
+#include "map.h"
+#include "profiler.h"
+#include "shader.h"
+#include "mesh.h"
+#include "minimap.h"
+#include "content_mapblock.h"
+#include "util/directiontables.h"
+#include "client/meshgen/collector.h"
+#include "client/renderingengine.h"
+#include <array>
+
+/*
+	MeshMakeData
+*/
+
+MeshMakeData::MeshMakeData(Client *client, bool use_shaders,
+		bool use_tangent_vertices):
+	m_client(client),
+	m_use_shaders(use_shaders),
+	m_use_tangent_vertices(use_tangent_vertices)
+{}
+
+void MeshMakeData::fillBlockDataBegin(const v3s16 &blockpos)
+{
+	m_blockpos = blockpos;
+
+	v3s16 blockpos_nodes = m_blockpos*MAP_BLOCKSIZE;
+
+	m_vmanip.clear();
+	VoxelArea voxel_area(blockpos_nodes - v3s16(1,1,1) * MAP_BLOCKSIZE,
+			blockpos_nodes + v3s16(1,1,1) * MAP_BLOCKSIZE*2-v3s16(1,1,1));
+	m_vmanip.addArea(voxel_area);
+}
+
+void MeshMakeData::fillBlockData(const v3s16 &block_offset, MapNode *data)
+{
+	v3s16 data_size(MAP_BLOCKSIZE, MAP_BLOCKSIZE, MAP_BLOCKSIZE);
+	VoxelArea data_area(v3s16(0,0,0), data_size - v3s16(1,1,1));
+
+	v3s16 bp = m_blockpos + block_offset;
+	v3s16 blockpos_nodes = bp * MAP_BLOCKSIZE;
+	m_vmanip.copyFrom(data, data_area, v3s16(0,0,0), blockpos_nodes, data_size);
+}
+
+void MeshMakeData::fill(MapBlock *block)
+{
+	fillBlockDataBegin(block->getPos());
+
+	fillBlockData(v3s16(0,0,0), block->getData());
+
+	// Get map for reading neighbor blocks
+	Map *map = block->getParent();
+
+	for (const v3s16 &dir : g_26dirs) {
+		v3s16 bp = m_blockpos + dir;
+		MapBlock *b = map->getBlockNoCreateNoEx(bp);
+		if(b)
+			fillBlockData(dir, b->getData());
+	}
+}
+
+void MeshMakeData::fillSingleNode(MapNode *node)
+{
+	m_blockpos = v3s16(0,0,0);
+
+	v3s16 blockpos_nodes = v3s16(0,0,0);
+	VoxelArea area(blockpos_nodes-v3s16(1,1,1)*MAP_BLOCKSIZE,
+			blockpos_nodes+v3s16(1,1,1)*MAP_BLOCKSIZE*2-v3s16(1,1,1));
+	s32 volume = area.getVolume();
+	s32 our_node_index = area.index(1,1,1);
+
+	// Allocate this block + neighbors
+	m_vmanip.clear();
+	m_vmanip.addArea(area);
+
+	// Fill in data
+	MapNode *data = new MapNode[volume];
+	for(s32 i = 0; i < volume; i++)
+	{
+		if (i == our_node_index)
+			data[i] = *node;
+		else
+			data[i] = MapNode(CONTENT_AIR, LIGHT_MAX, 0);
+	}
+	m_vmanip.copyFrom(data, area, area.MinEdge, area.MinEdge, area.getExtent());
+	delete[] data;
+}
+
+void MeshMakeData::setCrack(int crack_level, v3s16 crack_pos)
+{
+	if (crack_level >= 0)
+		m_crack_pos_relative = crack_pos - m_blockpos*MAP_BLOCKSIZE;
+}
+
+void MeshMakeData::setSmoothLighting(bool smooth_lighting)
+{
+	m_smooth_lighting = smooth_lighting;
+}
+
+/*
+	Light and vertex color functions
+*/
+
+/*
+	Calculate non-smooth lighting at interior of node.
+	Single light bank.
+*/
+static u8 getInteriorLight(enum LightBank bank, MapNode n, s32 increment,
+	const NodeDefManager *ndef)
+{
+	u8 light = n.getLight(bank, ndef);
+	if (light > 0)
+		light = rangelim(light + increment, 0, LIGHT_SUN);
+	return decode_light(light);
+}
+
+/*
+	Calculate non-smooth lighting at interior of node.
+	Both light banks.
+*/
+u16 getInteriorLight(MapNode n, s32 increment, const NodeDefManager *ndef)
+{
+	u16 day = getInteriorLight(LIGHTBANK_DAY, n, increment, ndef);
+	u16 night = getInteriorLight(LIGHTBANK_NIGHT, n, increment, ndef);
+	return day | (night << 8);
+}
+
+/*
+	Calculate non-smooth lighting at face of node.
+	Single light bank.
+*/
+static u8 getFaceLight(enum LightBank bank, MapNode n, MapNode n2,
+	v3s16 face_dir, const NodeDefManager *ndef)
+{
+	u8 light;
+	u8 l1 = n.getLight(bank, ndef);
+	u8 l2 = n2.getLight(bank, ndef);
+	if(l1 > l2)
+		light = l1;
+	else
+		light = l2;
+
+	// Boost light level for light sources
+	u8 light_source = MYMAX(ndef->get(n).light_source,
+			ndef->get(n2).light_source);
+	if(light_source > light)
+		light = light_source;
+
+	return decode_light(light);
+}
+
+/*
+	Calculate non-smooth lighting at face of node.
+	Both light banks.
+*/
+u16 getFaceLight(MapNode n, MapNode n2, const v3s16 &face_dir,
+	const NodeDefManager *ndef)
+{
+	u16 day = getFaceLight(LIGHTBANK_DAY, n, n2, face_dir, ndef);
+	u16 night = getFaceLight(LIGHTBANK_NIGHT, n, n2, face_dir, ndef);
+	return day | (night << 8);
+}
+
+/*
+	Calculate smooth lighting at the XYZ- corner of p.
+	Both light banks
+*/
+static u16 getSmoothLightCombined(const v3s16 &p,
+	const std::array<v3s16,8> &dirs, MeshMakeData *data)
+{
+	const NodeDefManager *ndef = data->m_client->ndef();
+
+	u16 ambient_occlusion = 0;
+	u16 light_count = 0;
+	u8 light_source_max = 0;
+	u16 light_day = 0;
+	u16 light_night = 0;
+	bool direct_sunlight = false;
+
+	auto add_node = [&] (u8 i, bool obstructed = false) -> bool {
+		if (obstructed) {
+			ambient_occlusion++;
+			return false;
+		}
+		MapNode n = data->m_vmanip.getNodeNoExNoEmerge(p + dirs[i]);
+		if (n.getContent() == CONTENT_IGNORE)
+			return true;
+		const ContentFeatures &f = ndef->get(n);
+		if (f.light_source > light_source_max)
+			light_source_max = f.light_source;
+		// Check f.solidness because fast-style leaves look better this way
+		if (f.param_type == CPT_LIGHT && f.solidness != 2) {
+			u8 light_level_day = n.getLightNoChecks(LIGHTBANK_DAY, &f);
+			u8 light_level_night = n.getLightNoChecks(LIGHTBANK_NIGHT, &f);
+			if (light_level_day == LIGHT_SUN)
+				direct_sunlight = true;
+			light_day += decode_light(light_level_day);
+			light_night += decode_light(light_level_night);
+			light_count++;
+		} else {
+			ambient_occlusion++;
+		}
+		return f.light_propagates;
+	};
+
+	std::array<bool, 4> obstructed = {{ 1, 1, 1, 1 }};
+	add_node(0);
+	bool opaque1 = !add_node(1);
+	bool opaque2 = !add_node(2);
+	bool opaque3 = !add_node(3);
+	obstructed[0] = opaque1 && opaque2;
+	obstructed[1] = opaque1 && opaque3;
+	obstructed[2] = opaque2 && opaque3;
+	for (u8 k = 0; k < 3; ++k)
+		if (add_node(k + 4, obstructed[k]))
+			obstructed[3] = false;
+	if (add_node(7, obstructed[3])) { // wrap light around nodes
+		ambient_occlusion -= 3;
+		for (u8 k = 0; k < 3; ++k)
+			add_node(k + 4, !obstructed[k]);
+	}
+
+	if (light_count == 0) {
+		light_day = light_night = 0;
+	} else {
+		light_day /= light_count;
+		light_night /= light_count;
+	}
+
+	// boost direct sunlight, if any
+	if (direct_sunlight)
+		light_day = 0xFF;
+
+	// Boost brightness around light sources
+	bool skip_ambient_occlusion_day = false;
+	if (decode_light(light_source_max) >= light_day) {
+		light_day = decode_light(light_source_max);
+		skip_ambient_occlusion_day = true;
+	}
+
+	bool skip_ambient_occlusion_night = false;
+	if(decode_light(light_source_max) >= light_night) {
+		light_night = decode_light(light_source_max);
+		skip_ambient_occlusion_night = true;
+	}
+
+	if (ambient_occlusion > 4) {
+		static thread_local const float ao_gamma = rangelim(
+			g_settings->getFloat("ambient_occlusion_gamma"), 0.25, 4.0);
+
+		// Table of gamma space multiply factors.
+		static thread_local const float light_amount[3] = {
+			powf(0.75, 1.0 / ao_gamma),
+			powf(0.5,  1.0 / ao_gamma),
+			powf(0.25, 1.0 / ao_gamma)
+		};
+
+		//calculate table index for gamma space multiplier
+		ambient_occlusion -= 5;
+
+		if (!skip_ambient_occlusion_day)
+			light_day = rangelim(core::round32(
+					light_day * light_amount[ambient_occlusion]), 0, 255);
+		if (!skip_ambient_occlusion_night)
+			light_night = rangelim(core::round32(
+					light_night * light_amount[ambient_occlusion]), 0, 255);
+	}
+
+	return light_day | (light_night << 8);
+}
+
+/*
+	Calculate smooth lighting at the given corner of p.
+	Both light banks.
+	Node at p is solid, and thus the lighting is face-dependent.
+*/
+u16 getSmoothLightSolid(const v3s16 &p, const v3s16 &face_dir, const v3s16 &corner, MeshMakeData *data)
+{
+	return getSmoothLightTransparent(p + face_dir, corner - 2 * face_dir, data);
+}
+
+/*
+	Calculate smooth lighting at the given corner of p.
+	Both light banks.
+	Node at p is not solid, and the lighting is not face-dependent.
+*/
+u16 getSmoothLightTransparent(const v3s16 &p, const v3s16 &corner, MeshMakeData *data)
+{
+	const std::array<v3s16,8> dirs = {{
+		// Always shine light
+		v3s16(0,0,0),
+		v3s16(corner.X,0,0),
+		v3s16(0,corner.Y,0),
+		v3s16(0,0,corner.Z),
+
+		// Can be obstructed
+		v3s16(corner.X,corner.Y,0),
+		v3s16(corner.X,0,corner.Z),
+		v3s16(0,corner.Y,corner.Z),
+		v3s16(corner.X,corner.Y,corner.Z)
+	}};
+	return getSmoothLightCombined(p, dirs, data);
+}
+
+void get_sunlight_color(video::SColorf *sunlight, u32 daynight_ratio){
+	f32 rg = daynight_ratio / 1000.0f - 0.04f;
+	f32 b = (0.98f * daynight_ratio) / 1000.0f + 0.078f;
+	sunlight->r = rg;
+	sunlight->g = rg;
+	sunlight->b = b;
+}
+
+void final_color_blend(video::SColor *result,
+		u16 light, u32 daynight_ratio)
+{
+	video::SColorf dayLight;
+	get_sunlight_color(&dayLight, daynight_ratio);
+	final_color_blend(result,
+		encode_light(light, 0), dayLight);
+}
+
+void final_color_blend(video::SColor *result,
+		const video::SColor &data, const video::SColorf &dayLight)
+{
+	static const video::SColorf artificialColor(1.04f, 1.04f, 1.04f);
+
+	video::SColorf c(data);
+	f32 n = 1 - c.a;
+
+	f32 r = c.r * (c.a * dayLight.r + n * artificialColor.r) * 2.0f;
+	f32 g = c.g * (c.a * dayLight.g + n * artificialColor.g) * 2.0f;
+	f32 b = c.b * (c.a * dayLight.b + n * artificialColor.b) * 2.0f;
+
+	// Emphase blue a bit in darker places
+	// Each entry of this array represents a range of 8 blue levels
+	static const u8 emphase_blue_when_dark[32] = {
+		1, 4, 6, 6, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0, 0, 0,
+		0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	};
+
+	b += emphase_blue_when_dark[irr::core::clamp((s32) ((r + g + b) / 3 * 255),
+		0, 255) / 8] / 255.0f;
+
+	result->setRed(core::clamp((s32) (r * 255.0f), 0, 255));
+	result->setGreen(core::clamp((s32) (g * 255.0f), 0, 255));
+	result->setBlue(core::clamp((s32) (b * 255.0f), 0, 255));
+}
+
+/*
+	Mesh generation helpers
+*/
+
+/*
+	vertex_dirs: v3s16[4]
+*/
+static void getNodeVertexDirs(const v3s16 &dir, v3s16 *vertex_dirs)
+{
+	/*
+		If looked from outside the node towards the face, the corners are:
+		0: bottom-right
+		1: bottom-left
+		2: top-left
+		3: top-right
+	*/
+	if (dir == v3s16(0, 0, 1)) {
+		// If looking towards z+, this is the face that is behind
+		// the center point, facing towards z+.
+		vertex_dirs[0] = v3s16(-1,-1, 1);
+		vertex_dirs[1] = v3s16( 1,-1, 1);
+		vertex_dirs[2] = v3s16( 1, 1, 1);
+		vertex_dirs[3] = v3s16(-1, 1, 1);
+	} else if (dir == v3s16(0, 0, -1)) {
+		// faces towards Z-
+		vertex_dirs[0] = v3s16( 1,-1,-1);
+		vertex_dirs[1] = v3s16(-1,-1,-1);
+		vertex_dirs[2] = v3s16(-1, 1,-1);
+		vertex_dirs[3] = v3s16( 1, 1,-1);
+	} else if (dir == v3s16(1, 0, 0)) {
+		// faces towards X+
+		vertex_dirs[0] = v3s16( 1,-1, 1);
+		vertex_dirs[1] = v3s16( 1,-1,-1);
+		vertex_dirs[2] = v3s16( 1, 1,-1);
+		vertex_dirs[3] = v3s16( 1, 1, 1);
+	} else if (dir == v3s16(-1, 0, 0)) {
+		// faces towards X-
+		vertex_dirs[0] = v3s16(-1,-1,-1);
+		vertex_dirs[1] = v3s16(-1,-1, 1);
+		vertex_dirs[2] = v3s16(-1, 1, 1);
+		vertex_dirs[3] = v3s16(-1, 1,-1);
+	} else if (dir == v3s16(0, 1, 0)) {
+		// faces towards Y+ (assume Z- as "down" in texture)
+		vertex_dirs[0] = v3s16( 1, 1,-1);
+		vertex_dirs[1] = v3s16(-1, 1,-1);
+		vertex_dirs[2] = v3s16(-1, 1, 1);
+		vertex_dirs[3] = v3s16( 1, 1, 1);
+	} else if (dir == v3s16(0, -1, 0)) {
+		// faces towards Y- (assume Z+ as "down" in texture)
+		vertex_dirs[0] = v3s16( 1,-1, 1);
+		vertex_dirs[1] = v3s16(-1,-1, 1);
+		vertex_dirs[2] = v3s16(-1,-1,-1);
+		vertex_dirs[3] = v3s16( 1,-1,-1);
+	}
+}
+
+static void getNodeTextureCoords(v3f base, const v3f &scale, const v3s16 &dir, float *u, float *v)
+{
+	if (dir.X > 0 || dir.Y > 0 || dir.Z < 0)
+		base -= scale;
+	if (dir == v3s16(0,0,1)) {
+		*u = -base.X - 1;
+		*v = -base.Y - 1;
+	} else if (dir == v3s16(0,0,-1)) {
+		*u = base.X + 1;
+		*v = -base.Y - 2;
+	} else if (dir == v3s16(1,0,0)) {
+		*u = base.Z + 1;
+		*v = -base.Y - 2;
+	} else if (dir == v3s16(-1,0,0)) {
+		*u = -base.Z - 1;
+		*v = -base.Y - 1;
+	} else if (dir == v3s16(0,1,0)) {
+		*u = base.X + 1;
+		*v = -base.Z - 2;
+	} else if (dir == v3s16(0,-1,0)) {
+		*u = base.X;
+		*v = base.Z;
+	}
+}
+
+struct FastFace
+{
+	TileSpec tile;
+	video::S3DVertex vertices[4]; // Precalculated vertices
+	/*!
+	 * The face is divided into two triangles. If this is true,
+	 * vertices 0 and 2 are connected, othervise vertices 1 and 3
+	 * are connected.
+	 */
+	bool vertex_0_2_connected;
+};
+
+static void makeFastFace(const TileSpec &tile, u16 li0, u16 li1, u16 li2, u16 li3,
+	const v3f &tp, const v3f &p, const v3s16 &dir, const v3f &scale, std::vector<FastFace> &dest)
+{
+	// Position is at the center of the cube.
+	v3f pos = p * BS;
+
+	float x0 = 0.0f;
+	float y0 = 0.0f;
+	float w = 1.0f;
+	float h = 1.0f;
+
+	v3f vertex_pos[4];
+	v3s16 vertex_dirs[4];
+	getNodeVertexDirs(dir, vertex_dirs);
+	if (tile.world_aligned)
+		getNodeTextureCoords(tp, scale, dir, &x0, &y0);
+
+	v3s16 t;
+	u16 t1;
+	switch (tile.rotation) {
+	case 0:
+		break;
+	case 1: //R90
+		t = vertex_dirs[0];
+		vertex_dirs[0] = vertex_dirs[3];
+		vertex_dirs[3] = vertex_dirs[2];
+		vertex_dirs[2] = vertex_dirs[1];
+		vertex_dirs[1] = t;
+		t1  = li0;
+		li0 = li3;
+		li3 = li2;
+		li2 = li1;
+		li1 = t1;
+		break;
+	case 2: //R180
+		t = vertex_dirs[0];
+		vertex_dirs[0] = vertex_dirs[2];
+		vertex_dirs[2] = t;
+		t = vertex_dirs[1];
+		vertex_dirs[1] = vertex_dirs[3];
+		vertex_dirs[3] = t;
+		t1  = li0;
+		li0 = li2;
+		li2 = t1;
+		t1  = li1;
+		li1 = li3;
+		li3 = t1;
+		break;
+	case 3: //R270
+		t = vertex_dirs[0];
+		vertex_dirs[0] = vertex_dirs[1];
+		vertex_dirs[1] = vertex_dirs[2];
+		vertex_dirs[2] = vertex_dirs[3];
+		vertex_dirs[3] = t;
+		t1  = li0;
+		li0 = li1;
+		li1 = li2;
+		li2 = li3;
+		li3 = t1;
+		break;
+	case 4: //FXR90
+		t = vertex_dirs[0];
+		vertex_dirs[0] = vertex_dirs[3];
+		vertex_dirs[3] = vertex_dirs[2];
+		vertex_dirs[2] = vertex_dirs[1];
+		vertex_dirs[1] = t;
+		t1  = li0;
+		li0 = li3;
+		li3 = li2;
+		li2 = li1;
+		li1 = t1;
+		y0 += h;
+		h *= -1;
+		break;
+	case 5: //FXR270
+		t = vertex_dirs[0];
+		vertex_dirs[0] = vertex_dirs[1];
+		vertex_dirs[1] = vertex_dirs[2];
+		vertex_dirs[2] = vertex_dirs[3];
+		vertex_dirs[3] = t;
+		t1  = li0;
+		li0 = li1;
+		li1 = li2;
+		li2 = li3;
+		li3 = t1;
+		y0 += h;
+		h *= -1;
+		break;
+	case 6: //FYR90
+		t = vertex_dirs[0];
+		vertex_dirs[0] = vertex_dirs[3];
+		vertex_dirs[3] = vertex_dirs[2];
+		vertex_dirs[2] = vertex_dirs[1];
+		vertex_dirs[1] = t;
+		t1  = li0;
+		li0 = li3;
+		li3 = li2;
+		li2 = li1;
+		li1 = t1;
+		x0 += w;
+		w *= -1;
+		break;
+	case 7: //FYR270
+		t = vertex_dirs[0];
+		vertex_dirs[0] = vertex_dirs[1];
+		vertex_dirs[1] = vertex_dirs[2];
+		vertex_dirs[2] = vertex_dirs[3];
+		vertex_dirs[3] = t;
+		t1  = li0;
+		li0 = li1;
+		li1 = li2;
+		li2 = li3;
+		li3 = t1;
+		x0 += w;
+		w *= -1;
+		break;
+	case 8: //FX
+		y0 += h;
+		h *= -1;
+		break;
+	case 9: //FY
+		x0 += w;
+		w *= -1;
+		break;
+	default:
+		break;
+	}
+
+	for (u16 i = 0; i < 4; i++) {
+		vertex_pos[i] = v3f(
+				BS / 2 * vertex_dirs[i].X,
+				BS / 2 * vertex_dirs[i].Y,
+				BS / 2 * vertex_dirs[i].Z
+		);
+	}
+
+	for (v3f &vpos : vertex_pos) {
+		vpos.X *= scale.X;
+		vpos.Y *= scale.Y;
+		vpos.Z *= scale.Z;
+		vpos += pos;
+	}
+
+	f32 abs_scale = 1.0f;
+	if      (scale.X < 0.999f || scale.X > 1.001f) abs_scale = scale.X;
+	else if (scale.Y < 0.999f || scale.Y > 1.001f) abs_scale = scale.Y;
+	else if (scale.Z < 0.999f || scale.Z > 1.001f) abs_scale = scale.Z;
+
+	v3f normal(dir.X, dir.Y, dir.Z);
+
+	u16 li[4] = { li0, li1, li2, li3 };
+	u16 day[4];
+	u16 night[4];
+
+	for (u8 i = 0; i < 4; i++) {
+		day[i] = li[i] >> 8;
+		night[i] = li[i] & 0xFF;
+	}
+
+	bool vertex_0_2_connected = abs(day[0] - day[2]) + abs(night[0] - night[2])
+			< abs(day[1] - day[3]) + abs(night[1] - night[3]);
+
+	v2f32 f[4] = {
+		core::vector2d<f32>(x0 + w * abs_scale, y0 + h),
+		core::vector2d<f32>(x0, y0 + h),
+		core::vector2d<f32>(x0, y0),
+		core::vector2d<f32>(x0 + w * abs_scale, y0) };
+
+	// equivalent to dest.push_back(FastFace()) but faster
+	dest.emplace_back();
+	FastFace& face = *dest.rbegin();
+
+	for (u8 i = 0; i < 4; i++) {
+		video::SColor c = encode_light(li[i], tile.emissive_light);
+		if (!tile.emissive_light)
+			applyFacesShading(c, normal);
+
+		face.vertices[i] = video::S3DVertex(vertex_pos[i], normal, c, f[i]);
+	}
+
+	/*
+		Revert triangles for nicer looking gradient if the
+		brightness of vertices 1 and 3 differ less than
+		the brightness of vertices 0 and 2.
+		*/
+	face.vertex_0_2_connected = vertex_0_2_connected;
+	face.tile = tile;
+}
+
+/*
+	Nodes make a face if contents differ and solidness differs.
+	Return value:
+		0: No face
+		1: Face uses m1's content
+		2: Face uses m2's content
+	equivalent: Whether the blocks share the same face (eg. water and glass)
+
+	TODO: Add 3: Both faces drawn with backface culling, remove equivalent
+*/
+static u8 face_contents(content_t m1, content_t m2, bool *equivalent,
+	const NodeDefManager *ndef)
+{
+	*equivalent = false;
+
+	if (m1 == m2 || m1 == CONTENT_IGNORE || m2 == CONTENT_IGNORE)
+		return 0;
+
+	const ContentFeatures &f1 = ndef->get(m1);
+	const ContentFeatures &f2 = ndef->get(m2);
+
+	// Contents don't differ for different forms of same liquid
+	if (f1.sameLiquid(f2))
+		return 0;
+
+	u8 c1 = f1.solidness;
+	u8 c2 = f2.solidness;
+
+	if (c1 == c2)
+		return 0;
+
+	if (c1 == 0)
+		c1 = f1.visual_solidness;
+	else if (c2 == 0)
+		c2 = f2.visual_solidness;
+
+	if (c1 == c2) {
+		*equivalent = true;
+		// If same solidness, liquid takes precense
+		if (f1.isLiquid())
+			return 1;
+		if (f2.isLiquid())
+			return 2;
+	}
+
+	if (c1 > c2)
+		return 1;
+
+	return 2;
+}
+
+/*
+	Gets nth node tile (0 <= n <= 5).
+*/
+void getNodeTileN(MapNode mn, const v3s16 &p, u8 tileindex, MeshMakeData *data, TileSpec &tile)
+{
+	const NodeDefManager *ndef = data->m_client->ndef();
+	const ContentFeatures &f = ndef->get(mn);
+	tile = f.tiles[tileindex];
+	bool has_crack = p == data->m_crack_pos_relative;
+	for (TileLayer &layer : tile.layers) {
+		if (layer.texture_id == 0)
+			continue;
+		if (!layer.has_color)
+			mn.getColor(f, &(layer.color));
+		// Apply temporary crack
+		if (has_crack)
+			layer.material_flags |= MATERIAL_FLAG_CRACK;
+	}
+}
+
+/*
+	Gets node tile given a face direction.
+*/
+void getNodeTile(MapNode mn, const v3s16 &p, const v3s16 &dir, MeshMakeData *data, TileSpec &tile)
+{
+	const NodeDefManager *ndef = data->m_client->ndef();
+
+	// Direction must be (1,0,0), (-1,0,0), (0,1,0), (0,-1,0),
+	// (0,0,1), (0,0,-1) or (0,0,0)
+	assert(dir.X * dir.X + dir.Y * dir.Y + dir.Z * dir.Z <= 1);
+
+	// Convert direction to single integer for table lookup
+	//  0 = (0,0,0)
+	//  1 = (1,0,0)
+	//  2 = (0,1,0)
+	//  3 = (0,0,1)
+	//  4 = invalid, treat as (0,0,0)
+	//  5 = (0,0,-1)
+	//  6 = (0,-1,0)
+	//  7 = (-1,0,0)
+	u8 dir_i = ((dir.X + 2 * dir.Y + 3 * dir.Z) & 7) * 2;
+
+	// Get rotation for things like chests
+	u8 facedir = mn.getFaceDir(ndef);
+
+	static const u16 dir_to_tile[24 * 16] =
+	{
+		// 0     +X    +Y    +Z           -Z    -Y    -X   ->   value=tile,rotation
+		   0,0,  2,0 , 0,0 , 4,0 ,  0,0,  5,0 , 1,0 , 3,0 ,  // rotate around y+ 0 - 3
+		   0,0,  4,0 , 0,3 , 3,0 ,  0,0,  2,0 , 1,1 , 5,0 ,
+		   0,0,  3,0 , 0,2 , 5,0 ,  0,0,  4,0 , 1,2 , 2,0 ,
+		   0,0,  5,0 , 0,1 , 2,0 ,  0,0,  3,0 , 1,3 , 4,0 ,
+
+		   0,0,  2,3 , 5,0 , 0,2 ,  0,0,  1,0 , 4,2 , 3,1 ,  // rotate around z+ 4 - 7
+		   0,0,  4,3 , 2,0 , 0,1 ,  0,0,  1,1 , 3,2 , 5,1 ,
+		   0,0,  3,3 , 4,0 , 0,0 ,  0,0,  1,2 , 5,2 , 2,1 ,
+		   0,0,  5,3 , 3,0 , 0,3 ,  0,0,  1,3 , 2,2 , 4,1 ,
+
+		   0,0,  2,1 , 4,2 , 1,2 ,  0,0,  0,0 , 5,0 , 3,3 ,  // rotate around z- 8 - 11
+		   0,0,  4,1 , 3,2 , 1,3 ,  0,0,  0,3 , 2,0 , 5,3 ,
+		   0,0,  3,1 , 5,2 , 1,0 ,  0,0,  0,2 , 4,0 , 2,3 ,
+		   0,0,  5,1 , 2,2 , 1,1 ,  0,0,  0,1 , 3,0 , 4,3 ,
+
+		   0,0,  0,3 , 3,3 , 4,1 ,  0,0,  5,3 , 2,3 , 1,3 ,  // rotate around x+ 12 - 15
+		   0,0,  0,2 , 5,3 , 3,1 ,  0,0,  2,3 , 4,3 , 1,0 ,
+		   0,0,  0,1 , 2,3 , 5,1 ,  0,0,  4,3 , 3,3 , 1,1 ,
+		   0,0,  0,0 , 4,3 , 2,1 ,  0,0,  3,3 , 5,3 , 1,2 ,
+
+		   0,0,  1,1 , 2,1 , 4,3 ,  0,0,  5,1 , 3,1 , 0,1 ,  // rotate around x- 16 - 19
+		   0,0,  1,2 , 4,1 , 3,3 ,  0,0,  2,1 , 5,1 , 0,0 ,
+		   0,0,  1,3 , 3,1 , 5,3 ,  0,0,  4,1 , 2,1 , 0,3 ,
+		   0,0,  1,0 , 5,1 , 2,3 ,  0,0,  3,1 , 4,1 , 0,2 ,
+
+		   0,0,  3,2 , 1,2 , 4,2 ,  0,0,  5,2 , 0,2 , 2,2 ,  // rotate around y- 20 - 23
+		   0,0,  5,2 , 1,3 , 3,2 ,  0,0,  2,2 , 0,1 , 4,2 ,
+		   0,0,  2,2 , 1,0 , 5,2 ,  0,0,  4,2 , 0,0 , 3,2 ,
+		   0,0,  4,2 , 1,1 , 2,2 ,  0,0,  3,2 , 0,3 , 5,2
+
+	};
+	u16 tile_index = facedir * 16 + dir_i;
+	getNodeTileN(mn, p, dir_to_tile[tile_index], data, tile);
+	tile.rotation = tile.world_aligned ? 0 : dir_to_tile[tile_index + 1];
+}
+
+static void getTileInfo(
+		// Input:
+		MeshMakeData *data,
+		const v3s16 &p,
+		const v3s16 &face_dir,
+		// Output:
+		bool &makes_face,
+		v3s16 &p_corrected,
+		v3s16 &face_dir_corrected,
+		u16 *lights,
+		TileSpec &tile
+	)
+{
+	VoxelManipulator &vmanip = data->m_vmanip;
+	const NodeDefManager *ndef = data->m_client->ndef();
+	v3s16 blockpos_nodes = data->m_blockpos * MAP_BLOCKSIZE;
+
+	const MapNode &n0 = vmanip.getNodeRefUnsafe(blockpos_nodes + p);
+
+	// Don't even try to get n1 if n0 is already CONTENT_IGNORE
+	if (n0.getContent() == CONTENT_IGNORE) {
+		makes_face = false;
+		return;
+	}
+
+	const MapNode &n1 = vmanip.getNodeRefUnsafeCheckFlags(blockpos_nodes + p + face_dir);
+
+	if (n1.getContent() == CONTENT_IGNORE) {
+		makes_face = false;
+		return;
+	}
+
+	// This is hackish
+	bool equivalent = false;
+	u8 mf = face_contents(n0.getContent(), n1.getContent(),
+			&equivalent, ndef);
+
+	if (mf == 0) {
+		makes_face = false;
+		return;
+	}
+
+	makes_face = true;
+
+	MapNode n = n0;
+
+	if (mf == 1) {
+		p_corrected = p;
+		face_dir_corrected = face_dir;
+	} else {
+		n = n1;
+		p_corrected = p + face_dir;
+		face_dir_corrected = -face_dir;
+	}
+
+	getNodeTile(n, p_corrected, face_dir_corrected, data, tile);
+	const ContentFeatures &f = ndef->get(n);
+	tile.emissive_light = f.light_source;
+
+	// eg. water and glass
+	if (equivalent) {
+		for (TileLayer &layer : tile.layers)
+			layer.material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
+	}
+
+	if (!data->m_smooth_lighting) {
+		lights[0] = lights[1] = lights[2] = lights[3] =
+				getFaceLight(n0, n1, face_dir, ndef);
+	} else {
+		v3s16 vertex_dirs[4];
+		getNodeVertexDirs(face_dir_corrected, vertex_dirs);
+
+		v3s16 light_p = blockpos_nodes + p_corrected;
+		for (u16 i = 0; i < 4; i++)
+			lights[i] = getSmoothLightSolid(light_p, face_dir_corrected, vertex_dirs[i], data);
+	}
+}
+
+/*
+	startpos:
+	translate_dir: unit vector with only one of x, y or z
+	face_dir: unit vector with only one of x, y or z
+*/
+static void updateFastFaceRow(
+		MeshMakeData *data,
+		const v3s16 &&startpos,
+		v3s16 translate_dir,
+		const v3f &&translate_dir_f,
+		const v3s16 &&face_dir,
+		std::vector<FastFace> &dest)
+{
+	v3s16 p = startpos;
+
+	u16 continuous_tiles_count = 1;
+
+	bool makes_face = false;
+	v3s16 p_corrected;
+	v3s16 face_dir_corrected;
+	u16 lights[4] = {0, 0, 0, 0};
+	TileSpec tile;
+	getTileInfo(data, p, face_dir,
+			makes_face, p_corrected, face_dir_corrected,
+			lights, tile);
+
+	// Unroll this variable which has a significant build cost
+	TileSpec next_tile;
+	for (u16 j = 0; j < MAP_BLOCKSIZE; j++) {
+		// If tiling can be done, this is set to false in the next step
+		bool next_is_different = true;
+
+		v3s16 p_next;
+
+		bool next_makes_face = false;
+		v3s16 next_p_corrected;
+		v3s16 next_face_dir_corrected;
+		u16 next_lights[4] = {0, 0, 0, 0};
+
+		// If at last position, there is nothing to compare to and
+		// the face must be drawn anyway
+		if (j != MAP_BLOCKSIZE - 1) {
+			p_next = p + translate_dir;
+
+			getTileInfo(data, p_next, face_dir,
+					next_makes_face, next_p_corrected,
+					next_face_dir_corrected, next_lights,
+					next_tile);
+
+			if (next_makes_face == makes_face
+					&& next_p_corrected == p_corrected + translate_dir
+					&& next_face_dir_corrected == face_dir_corrected
+					&& memcmp(next_lights, lights, ARRLEN(lights) * sizeof(u16)) == 0
+					&& next_tile.isTileable(tile)) {
+				next_is_different = false;
+				continuous_tiles_count++;
+			}
+		}
+		if (next_is_different) {
+			/*
+				Create a face if there should be one
+			*/
+			if (makes_face) {
+				// Floating point conversion of the position vector
+				v3f pf(p_corrected.X, p_corrected.Y, p_corrected.Z);
+				// Center point of face (kind of)
+				v3f sp = pf - ((f32)continuous_tiles_count * 0.5f - 0.5f)
+					* translate_dir_f;
+				v3f scale(1, 1, 1);
+
+				if (translate_dir.X != 0)
+					scale.X = continuous_tiles_count;
+				if (translate_dir.Y != 0)
+					scale.Y = continuous_tiles_count;
+				if (translate_dir.Z != 0)
+					scale.Z = continuous_tiles_count;
+
+				makeFastFace(tile, lights[0], lights[1], lights[2], lights[3],
+						pf, sp, face_dir_corrected, scale, dest);
+
+				g_profiler->avg("Meshgen: faces drawn by tiling", 0);
+				for (int i = 1; i < continuous_tiles_count; i++)
+					g_profiler->avg("Meshgen: faces drawn by tiling", 1);
+			}
+
+			continuous_tiles_count = 1;
+		}
+
+		makes_face = next_makes_face;
+		p_corrected = next_p_corrected;
+		face_dir_corrected = next_face_dir_corrected;
+		std::memcpy(lights, next_lights, ARRLEN(lights) * sizeof(u16));
+		if (next_is_different)
+			tile = next_tile;
+		p = p_next;
+	}
+}
+
+static void updateAllFastFaceRows(MeshMakeData *data,
+		std::vector<FastFace> &dest)
+{
+	/*
+		Go through every y,z and get top(y+) faces in rows of x+
+	*/
+	for (s16 y = 0; y < MAP_BLOCKSIZE; y++)
+	for (s16 z = 0; z < MAP_BLOCKSIZE; z++)
+		updateFastFaceRow(data,
+				v3s16(0, y, z),
+				v3s16(1, 0, 0), //dir
+				v3f  (1, 0, 0),
+				v3s16(0, 1, 0), //face dir
+				dest);
+
+	/*
+		Go through every x,y and get right(x+) faces in rows of z+
+	*/
+	for (s16 x = 0; x < MAP_BLOCKSIZE; x++)
+	for (s16 y = 0; y < MAP_BLOCKSIZE; y++)
+		updateFastFaceRow(data,
+				v3s16(x, y, 0),
+				v3s16(0, 0, 1), //dir
+				v3f  (0, 0, 1),
+				v3s16(1, 0, 0), //face dir
+				dest);
+
+	/*
+		Go through every y,z and get back(z+) faces in rows of x+
+	*/
+	for (s16 z = 0; z < MAP_BLOCKSIZE; z++)
+	for (s16 y = 0; y < MAP_BLOCKSIZE; y++)
+		updateFastFaceRow(data,
+				v3s16(0, y, z),
+				v3s16(1, 0, 0), //dir
+				v3f  (1, 0, 0),
+				v3s16(0, 0, 1), //face dir
+				dest);
+}
+
+static void applyTileColor(PreMeshBuffer &pmb)
+{
+	video::SColor tc = pmb.layer.color;
+	if (tc == video::SColor(0xFFFFFFFF))
+		return;
+	for (video::S3DVertex &vertex : pmb.vertices) {
+		video::SColor *c = &vertex.Color;
+		c->set(c->getAlpha(),
+			c->getRed() * tc.getRed() / 255,
+			c->getGreen() * tc.getGreen() / 255,
+			c->getBlue() * tc.getBlue() / 255);
+	}
+}
+
+/*
+	MapBlockMesh
+*/
+
+MapBlockMesh::MapBlockMesh(MeshMakeData *data, v3s16 camera_offset):
+	m_minimap_mapblock(NULL),
+	m_tsrc(data->m_client->getTextureSource()),
+	m_shdrsrc(data->m_client->getShaderSource()),
+	m_animation_force_timer(0), // force initial animation
+	m_last_crack(-1),
+	m_last_daynight_ratio((u32) -1)
+{
+	for (auto &m : m_mesh)
+		m = new scene::SMesh();
+	m_enable_shaders = data->m_use_shaders;
+	m_use_tangent_vertices = data->m_use_tangent_vertices;
+	m_enable_vbo = g_settings->getBool("enable_vbo");
+
+	if (g_settings->getBool("enable_minimap")) {
+		m_minimap_mapblock = new MinimapMapblock;
+		m_minimap_mapblock->getMinimapNodes(
+			&data->m_vmanip, data->m_blockpos * MAP_BLOCKSIZE);
+	}
+
+	// 4-21ms for MAP_BLOCKSIZE=16  (NOTE: probably outdated)
+	// 24-155ms for MAP_BLOCKSIZE=32  (NOTE: probably outdated)
+	//TimeTaker timer1("MapBlockMesh()");
+
+	std::vector<FastFace> fastfaces_new;
+	fastfaces_new.reserve(512);
+
+	/*
+		We are including the faces of the trailing edges of the block.
+		This means that when something changes, the caller must
+		also update the meshes of the blocks at the leading edges.
+
+		NOTE: This is the slowest part of this method.
+	*/
+	{
+		// 4-23ms for MAP_BLOCKSIZE=16  (NOTE: probably outdated)
+		//TimeTaker timer2("updateAllFastFaceRows()");
+		updateAllFastFaceRows(data, fastfaces_new);
+	}
+	// End of slow part
+
+	/*
+		Convert FastFaces to MeshCollector
+	*/
+
+	MeshCollector collector;
+
+	{
+		// avg 0ms (100ms spikes when loading textures the first time)
+		// (NOTE: probably outdated)
+		//TimeTaker timer2("MeshCollector building");
+
+		for (const FastFace &f : fastfaces_new) {
+			static const u16 indices[] = {0, 1, 2, 2, 3, 0};
+			static const u16 indices_alternate[] = {0, 1, 3, 2, 3, 1};
+			const u16 *indices_p =
+				f.vertex_0_2_connected ? indices : indices_alternate;
+			collector.append(f.tile, f.vertices, 4, indices_p, 6);
+		}
+	}
+
+	/*
+		Add special graphics:
+		- torches
+		- flowing water
+		- fences
+		- whatever
+	*/
+
+	{
+		MapblockMeshGenerator generator(data, &collector);
+		generator.generate();
+	}
+
+	/*
+		Convert MeshCollector to SMesh
+	*/
+
+	for (int layer = 0; layer < MAX_TILE_LAYERS; layer++) {
+		for(u32 i = 0; i < collector.prebuffers[layer].size(); i++)
+		{
+			PreMeshBuffer &p = collector.prebuffers[layer][i];
+
+			applyTileColor(p);
+
+			// Generate animation data
+			// - Cracks
+			if (p.layer.material_flags & MATERIAL_FLAG_CRACK) {
+				// Find the texture name plus ^[crack:N:
+				std::ostringstream os(std::ios::binary);
+				os << m_tsrc->getTextureName(p.layer.texture_id) << "^[crack";
+				if (p.layer.material_flags & MATERIAL_FLAG_CRACK_OVERLAY)
+					os << "o";  // use ^[cracko
+				u8 tiles = p.layer.scale;
+				if (tiles > 1)
+					os << ":" << (u32)tiles;
+				os << ":" << (u32)p.layer.animation_frame_count << ":";
+				m_crack_materials.insert(std::make_pair(
+						std::pair<u8, u32>(layer, i), os.str()));
+				// Replace tile texture with the cracked one
+				p.layer.texture = m_tsrc->getTextureForMesh(
+						os.str() + "0",
+						&p.layer.texture_id);
+			}
+			// - Texture animation
+			if (p.layer.material_flags & MATERIAL_FLAG_ANIMATION) {
+				// Add to MapBlockMesh in order to animate these tiles
+				m_animation_tiles[std::pair<u8, u32>(layer, i)] = p.layer;
+				m_animation_frames[std::pair<u8, u32>(layer, i)] = 0;
+				if (g_settings->getBool(
+						"desynchronize_mapblock_texture_animation")) {
+					// Get starting position from noise
+					m_animation_frame_offsets[std::pair<u8, u32>(layer, i)] =
+							100000 * (2.0 + noise3d(
+							data->m_blockpos.X, data->m_blockpos.Y,
+							data->m_blockpos.Z, 0));
+				} else {
+					// Play all synchronized
+					m_animation_frame_offsets[std::pair<u8, u32>(layer, i)] = 0;
+				}
+				// Replace tile texture with the first animation frame
+				p.layer.texture = (*p.layer.frames)[0].texture;
+			}
+
+			if (!m_enable_shaders) {
+				// Extract colors for day-night animation
+				// Dummy sunlight to handle non-sunlit areas
+				video::SColorf sunlight;
+				get_sunlight_color(&sunlight, 0);
+				u32 vertex_count = p.vertices.size();
+				for (u32 j = 0; j < vertex_count; j++) {
+					video::SColor *vc = &p.vertices[j].Color;
+					video::SColor copy = *vc;
+					if (vc->getAlpha() == 0) // No sunlight - no need to animate
+						final_color_blend(vc, copy, sunlight); // Finalize color
+					else // Record color to animate
+						m_daynight_diffs[std::pair<u8, u32>(layer, i)][j] = copy;
+
+					// The sunlight ratio has been stored,
+					// delete alpha (for the final rendering).
+					vc->setAlpha(255);
+				}
+			}
+
+			// Create material
+			video::SMaterial material;
+			material.setFlag(video::EMF_LIGHTING, false);
+			material.setFlag(video::EMF_BACK_FACE_CULLING, true);
+			material.setFlag(video::EMF_BILINEAR_FILTER, false);
+			material.setFlag(video::EMF_FOG_ENABLE, true);
+			material.setTexture(0, p.layer.texture);
+
+			if (m_enable_shaders) {
+				material.MaterialType = m_shdrsrc->getShaderInfo(
+						p.layer.shader_id).material;
+				p.layer.applyMaterialOptionsWithShaders(material);
+				if (p.layer.normal_texture)
+					material.setTexture(1, p.layer.normal_texture);
+				material.setTexture(2, p.layer.flags_texture);
+			} else {
+				p.layer.applyMaterialOptions(material);
+			}
+
+			scene::SMesh *mesh = (scene::SMesh *)m_mesh[layer];
+
+			// Create meshbuffer, add to mesh
+			if (m_use_tangent_vertices) {
+				scene::SMeshBufferTangents *buf =
+						new scene::SMeshBufferTangents();
+				buf->Material = material;
+				buf->Vertices.reallocate(p.vertices.size());
+				buf->Indices.reallocate(p.indices.size());
+				for (const video::S3DVertex &v: p.vertices)
+					buf->Vertices.push_back(video::S3DVertexTangents(v.Pos, v.Color, v.TCoords));
+				for (u16 i: p.indices)
+					buf->Indices.push_back(i);
+				buf->recalculateBoundingBox();
+				mesh->addMeshBuffer(buf);
+				buf->drop();
+			} else {
+				scene::SMeshBuffer *buf = new scene::SMeshBuffer();
+				buf->Material = material;
+				buf->append(&p.vertices[0], p.vertices.size(),
+					&p.indices[0], p.indices.size());
+				mesh->addMeshBuffer(buf);
+				buf->drop();
+			}
+		}
+
+		/*
+			Do some stuff to the mesh
+		*/
+		m_camera_offset = camera_offset;
+		translateMesh(m_mesh[layer],
+			intToFloat(data->m_blockpos * MAP_BLOCKSIZE - camera_offset, BS));
+
+		if (m_use_tangent_vertices) {
+			scene::IMeshManipulator* meshmanip =
+				RenderingEngine::get_scene_manager()->getMeshManipulator();
+			meshmanip->recalculateTangents(m_mesh[layer], true, false, false);
+		}
+
+		if (m_mesh[layer]) {
+#if 0
+			// Usually 1-700 faces and 1-7 materials
+			std::cout << "Updated MapBlock has " << fastfaces_new.size()
+					<< " faces and uses " << m_mesh[layer]->getMeshBufferCount()
+					<< " materials (meshbuffers)" << std::endl;
+#endif
+
+			// Use VBO for mesh (this just would set this for ever buffer)
+			if (m_enable_vbo)
+				m_mesh[layer]->setHardwareMappingHint(scene::EHM_STATIC);
+		}
+	}
+
+	//std::cout<<"added "<<fastfaces.getSize()<<" faces."<<std::endl;
+
+	// Check if animation is required for this mesh
+	m_has_animation =
+		!m_crack_materials.empty() ||
+		!m_daynight_diffs.empty() ||
+		!m_animation_tiles.empty();
+}
+
+MapBlockMesh::~MapBlockMesh()
+{
+	for (scene::IMesh *m : m_mesh) {
+		if (m_enable_vbo && m)
+			for (u32 i = 0; i < m->getMeshBufferCount(); i++) {
+				scene::IMeshBuffer *buf = m->getMeshBuffer(i);
+				RenderingEngine::get_video_driver()->removeHardwareBuffer(buf);
+			}
+		m->drop();
+		m = NULL;
+	}
+	delete m_minimap_mapblock;
+}
+
+bool MapBlockMesh::animate(bool faraway, float time, int crack,
+	u32 daynight_ratio)
+{
+	if (!m_has_animation) {
+		m_animation_force_timer = 100000;
+		return false;
+	}
+
+	m_animation_force_timer = myrand_range(5, 100);
+
+	// Cracks
+	if (crack != m_last_crack) {
+		for (auto &crack_material : m_crack_materials) {
+			scene::IMeshBuffer *buf = m_mesh[crack_material.first.first]->
+				getMeshBuffer(crack_material.first.second);
+			std::string basename = crack_material.second;
+
+			// Create new texture name from original
+			std::ostringstream os;
+			os << basename << crack;
+			u32 new_texture_id = 0;
+			video::ITexture *new_texture =
+					m_tsrc->getTextureForMesh(os.str(), &new_texture_id);
+			buf->getMaterial().setTexture(0, new_texture);
+
+			// If the current material is also animated,
+			// update animation info
+			auto anim_iter = m_animation_tiles.find(crack_material.first);
+			if (anim_iter != m_animation_tiles.end()) {
+				TileLayer &tile = anim_iter->second;
+				tile.texture = new_texture;
+				tile.texture_id = new_texture_id;
+				// force animation update
+				m_animation_frames[crack_material.first] = -1;
+			}
+		}
+
+		m_last_crack = crack;
+	}
+
+	// Texture animation
+	for (auto &animation_tile : m_animation_tiles) {
+		const TileLayer &tile = animation_tile.second;
+		// Figure out current frame
+		int frameoffset = m_animation_frame_offsets[animation_tile.first];
+		int frame = (int)(time * 1000 / tile.animation_frame_length_ms
+				+ frameoffset) % tile.animation_frame_count;
+		// If frame doesn't change, skip
+		if (frame == m_animation_frames[animation_tile.first])
+			continue;
+
+		m_animation_frames[animation_tile.first] = frame;
+
+		scene::IMeshBuffer *buf = m_mesh[animation_tile.first.first]->
+			getMeshBuffer(animation_tile.first.second);
+
+		const FrameSpec &animation_frame = (*tile.frames)[frame];
+		buf->getMaterial().setTexture(0, animation_frame.texture);
+		if (m_enable_shaders) {
+			if (animation_frame.normal_texture)
+				buf->getMaterial().setTexture(1,
+					animation_frame.normal_texture);
+			buf->getMaterial().setTexture(2, animation_frame.flags_texture);
+		}
+	}
+
+	// Day-night transition
+	if (!m_enable_shaders && (daynight_ratio != m_last_daynight_ratio)) {
+		// Force reload mesh to VBO
+		if (m_enable_vbo)
+			for (scene::IMesh *m : m_mesh)
+				m->setDirty();
+		video::SColorf day_color;
+		get_sunlight_color(&day_color, daynight_ratio);
+
+		for (auto &daynight_diff : m_daynight_diffs) {
+			scene::IMeshBuffer *buf = m_mesh[daynight_diff.first.first]->
+				getMeshBuffer(daynight_diff.first.second);
+			video::S3DVertex *vertices = (video::S3DVertex *)buf->getVertices();
+			for (const auto &j : daynight_diff.second)
+				final_color_blend(&(vertices[j.first].Color), j.second,
+						day_color);
+		}
+		m_last_daynight_ratio = daynight_ratio;
+	}
+
+	return true;
+}
+
+void MapBlockMesh::updateCameraOffset(v3s16 camera_offset)
+{
+	if (camera_offset != m_camera_offset) {
+		for (scene::IMesh *layer : m_mesh) {
+			translateMesh(layer,
+				intToFloat(m_camera_offset - camera_offset, BS));
+			if (m_enable_vbo)
+				layer->setDirty();
+		}
+		m_camera_offset = camera_offset;
+	}
+}
+
+video::SColor encode_light(u16 light, u8 emissive_light)
+{
+	// Get components
+	u32 day = (light & 0xff);
+	u32 night = (light >> 8);
+	// Add emissive light
+	night += emissive_light * 2.5f;
+	if (night > 255)
+		night = 255;
+	// Since we don't know if the day light is sunlight or
+	// artificial light, assume it is artificial when the night
+	// light bank is also lit.
+	if (day < night)
+		day = 0;
+	else
+		day = day - night;
+	u32 sum = day + night;
+	// Ratio of sunlight:
+	u32 r;
+	if (sum > 0)
+		r = day * 255 / sum;
+	else
+		r = 0;
+	// Average light:
+	float b = (day + night) / 2;
+	return video::SColor(r, b, b, b);
+}