diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/Main.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/Main.kt
index 1cd080a3..2fa1768b 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/Main.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/Main.kt
@@ -4,7 +4,6 @@ import org.apache.logging.log4j.LogManager
 import org.lwjgl.Version
 import org.lwjgl.glfw.GLFW.glfwSetWindowShouldClose
 import ru.dbotthepony.kstarbound.client.StarboundClient
-import ru.dbotthepony.kstarbound.defs.tile.MaterialModifier
 import ru.dbotthepony.kstarbound.io.*
 import ru.dbotthepony.kstarbound.world.ChunkPos
 import ru.dbotthepony.kstarbound.world.entities.PlayerEntity
@@ -76,7 +75,17 @@ fun main() {
 								hitTile = true
 							}
 
-							reader.skipBytes(5)
+							reader.skipBytes(1) // Foreground hue shift
+							reader.skipBytes(1) // Foreground color variant
+
+							val modifier = reader.readShort()
+							val getModifier = Starbound.tileModifiersByIDAccess[modifier.toInt()]
+
+							if (getModifier != null && getMat != null) {
+								chunk.foreground[x, y]?.modifier = getModifier
+							}
+
+							reader.skipBytes(1) // Foreground mod hue shift
 
 							val materialID2 = reader.readShort()
 							val getMat2 = Starbound.tilesAccessID[materialID2.toInt()]
@@ -86,7 +95,17 @@ fun main() {
 								hitTile = true
 							}
 
-							reader.skipBytes(22)
+							reader.skipBytes(1) // Background hue shift
+							reader.skipBytes(1) // Background color variant
+
+							val modifier2 = reader.readShort()
+							val getModifier2 = Starbound.tileModifiersByIDAccess[modifier2.toInt()]
+
+							if (getModifier2 != null && getMat2 != null) {
+								chunk.background[x, y]?.modifier = getModifier2
+							}
+
+							reader.skipBytes(18)
 						}
 					}
 
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt
index 98c3fd22..d5e1695a 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/Starbound.kt
@@ -53,10 +53,16 @@ object Starbound : IVFS {
 
 	private val tiles = HashMap<String, TileDefinition>()
 	private val tilesByMaterialID = Int2ObjectAVLTreeMap<TileDefinition>()
+
+	private val tileModifiers = HashMap<String, MaterialModifier>()
+	private val tileModifiersByID = Int2ObjectAVLTreeMap<MaterialModifier>()
+
 	private val projectiles = HashMap<String, ConfiguredProjectile>()
 	private val parallax = HashMap<String, ParallaxPrototype>()
 	private val functions = HashMap<String, JsonFunction>()
 
+	val tileModifiersAccess: Map<String, MaterialModifier> = Collections.unmodifiableMap(tileModifiers)
+	val tileModifiersByIDAccess: Map<Int, MaterialModifier> = Collections.unmodifiableMap(tileModifiersByID)
 	val tilesAccess: Map<String, TileDefinition> = Collections.unmodifiableMap(tiles)
 	val tilesAccessID: Map<Int, TileDefinition> = Collections.unmodifiableMap(tilesByMaterialID)
 	val projectilesAccess: Map<String, ConfiguredProjectile> = Collections.unmodifiableMap(projectiles)
@@ -176,6 +182,7 @@ object Starbound : IVFS {
 			loadStage(callback, this::loadTileMaterials, "materials")
 			loadStage(callback, this::loadProjectiles, "projectiles")
 			loadStage(callback, this::loadParallax, "parallax definitions")
+			loadStage(callback, this::loadMaterialModifiers, "material modifier definitions")
 
 			initializing = false
 			initialized = true
@@ -320,8 +327,27 @@ object Starbound : IVFS {
 	}
 
 	private fun loadMaterialModifiers(callback: (String) -> Unit) {
-		for (fs in fileSystems) {
+		readingFolder = "/tiles/materials"
 
+		for (fs in fileSystems) {
+			for (listedFile in fs.listAllFilesWithExtension("matmod")) {
+				try {
+					callback("Loading $listedFile")
+
+					readingFolder = getPathFolder(listedFile)
+					val tileDef = gson.fromJson(getReader(listedFile), MaterialModifier::class.java)
+
+					check(tileModifiers[tileDef.modName] == null) { "Already has material with name ${tileDef.modName} loaded!" }
+					check(tileModifiersByID[tileDef.modId] == null) { "Already has material with ID ${tileDef.modId} loaded!" }
+					tileModifiersByID[tileDef.modId] = tileDef
+					tileModifiers[tileDef.modName] = tileDef
+				} catch (err: Throwable) {
+					//throw TileDefLoadingException("Loading tile file $listedFile", err)
+					LOGGER.error("Loading tile modifier file $listedFile", err)
+				}
+			}
 		}
+
+		readingFolder = null
 	}
 }
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/client/ClientChunk.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/client/ClientChunk.kt
index b93856f9..28129620 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/client/ClientChunk.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/client/ClientChunk.kt
@@ -10,6 +10,7 @@ import ru.dbotthepony.kstarbound.world.entities.Entity
 import ru.dbotthepony.kvector.matrix.Matrix4fStack
 import ru.dbotthepony.kvector.vector.ndouble.Vector2d
 import java.io.Closeable
+import java.util.LinkedList
 
 /**
  * Псевдо zPos у фоновых тайлов
@@ -24,7 +25,7 @@ class ClientChunk(world: ClientWorld, pos: ChunkPos) : Chunk<ClientWorld, Client
 
 	private inner class TileLayerRenderer(private val layerChangeset: () -> Int, private val isBackground: Boolean) : AutoCloseable {
 		private val layers = TileLayerList()
-		val bakedMeshes = ArrayList<Pair<BakedStaticMesh, Int>>()
+		val bakedMeshes = LinkedList<Pair<BakedStaticMesh, Int>>()
 		private var changeset = -1
 
 		fun bake(view: ITileChunk) {
@@ -46,8 +47,13 @@ class ClientChunk(world: ClientWorld, pos: ChunkPos) : Chunk<ClientWorld, Client
 
 			for ((pos, tile) in view.posToTile) {
 				if (tile != null) {
-					val renderer = state.tileRenderers.get(tile.def.materialName)
-					renderer.tesselate(view, layers, pos, background = isBackground)
+					state.tileRenderers.getTileRenderer(tile.def.materialName).tesselate(view, layers, pos, background = isBackground)
+
+					val modifier = tile.modifier
+
+					if (modifier != null) {
+						state.tileRenderers.getModifierRenderer(modifier.modName).tesselate(view, layers, pos, background = isBackground)
+					}
 				}
 			}
 		}
@@ -55,13 +61,19 @@ class ClientChunk(world: ClientWorld, pos: ChunkPos) : Chunk<ClientWorld, Client
 		fun loadRenderers(view: ITileChunk) {
 			for ((_, tile) in view.posToTile) {
 				if (tile != null) {
-					state.tileRenderers.get(tile.def.materialName)
+					state.tileRenderers.getTileRenderer(tile.def.materialName)
+
+					val modifier = tile.modifier
+
+					if (modifier != null) {
+						state.tileRenderers.getModifierRenderer(modifier.modName)
+					}
 				}
 			}
 		}
 
 		fun uploadStatic(clear: Boolean = true) {
-			for ((baked, builder, zLevel) in layers.buildList()) {
+			for ((baked, builder, zLevel) in layers.buildSortedLayerList()) {
 				bakedMeshes.add(BakedStaticMesh(baked, builder) to zLevel)
 			}
 
@@ -93,7 +105,7 @@ class ClientChunk(world: ClientWorld, pos: ChunkPos) : Chunk<ClientWorld, Client
 
 				bakedMeshes.clear()
 
-				for ((baked, builder, zLevel) in layers.buildList()) {
+				for ((baked, builder, zLevel) in layers.buildSortedLayerList()) {
 					bakedMeshes.add(BakedStaticMesh(baked, builder) to zLevel)
 				}
 
@@ -205,22 +217,6 @@ class ClientChunk(world: ClientWorld, pos: ChunkPos) : Chunk<ClientWorld, Client
 		foregroundRenderer.autoUpload()
 	}
 
-	fun renderDebug() {
-		if (debugCollisions) {
-			state.quadWireframe {
-				it.quad(aabb.mins.x.toFloat(), aabb.mins.y.toFloat(), aabb.maxs.x.toFloat(), aabb.maxs.y.toFloat())
-
-				for (layer in foreground.collisionLayers()) {
-					it.quad(layer.mins.x.toFloat(), layer.mins.y.toFloat(), layer.maxs.x.toFloat(), layer.maxs.y.toFloat())
-				}
-			}
-		}
-
-		for (renderer in entityRenderers.values) {
-			renderer.renderDebug()
-		}
-	}
-
 	/**
 	 * Хранит состояние отрисовки этого чанка
 	 *
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/BakedProgramState.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/ConfiguredShaderProgram.kt
similarity index 94%
rename from src/main/kotlin/ru/dbotthepony/kstarbound/client/render/BakedProgramState.kt
rename to src/main/kotlin/ru/dbotthepony/kstarbound/client/render/ConfiguredShaderProgram.kt
index 54a2c1cc..0a6fd463 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/BakedProgramState.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/ConfiguredShaderProgram.kt
@@ -18,7 +18,7 @@ import ru.dbotthepony.kvector.matrix.Matrix4fStack
  * Ожидается, что состояние будет выставлено ПОЛНОСТЬЮ, т.е. НИКАКОЙ предыдущий код НЕ МОЖЕТ повлиять на результат выполнения
  * шейдерной программы, которая связанна с этим объектом (за исключением не вызова [setTransform] внешним кодом)
  */
-open class BakedProgramState(
+open class ConfiguredShaderProgram(
 	val program: GLShaderProgram,
 ) {
 	private val transformLocation = program["_transform"]
@@ -40,13 +40,13 @@ open class BakedProgramState(
  * с заданной матрицей трансформации
  */
 class BakedStaticMesh(
-	val programState: BakedProgramState,
+	val programState: ConfiguredShaderProgram,
 	val indexCount: Int,
 	val vao: GLVertexArrayObject,
 ) : AutoCloseable {
 	private var onClose = {}
 
-	constructor(programState: BakedProgramState, builder: DynamicVertexBuilder) : this(
+	constructor(programState: ConfiguredShaderProgram, builder: DynamicVertexBuilder) : this(
 		programState,
 		builder.indexCount,
 		programState.program.state.newVAO(),
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/TileRenderer.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/TileRenderer.kt
index 8cc150b6..039aeb9b 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/TileRenderer.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/client/render/TileRenderer.kt
@@ -1,45 +1,44 @@
 package ru.dbotthepony.kstarbound.client.render
 
+import it.unimi.dsi.fastutil.ints.Int2ObjectAVLTreeMap
+import it.unimi.dsi.fastutil.ints.Int2ObjectFunction
 import org.apache.logging.log4j.LogManager
 import org.lwjgl.opengl.GL46.*
 import ru.dbotthepony.kstarbound.PIXELS_IN_STARBOUND_UNITf
 import ru.dbotthepony.kstarbound.Starbound
 import ru.dbotthepony.kstarbound.client.gl.*
-import ru.dbotthepony.kstarbound.defs.tile.RenderMatch
-import ru.dbotthepony.kstarbound.defs.tile.RenderPiece
-import ru.dbotthepony.kstarbound.defs.tile.TileDefinition
+import ru.dbotthepony.kstarbound.defs.tile.*
+import ru.dbotthepony.kstarbound.world.ChunkTile
 import ru.dbotthepony.kstarbound.world.ITileChunk
 import ru.dbotthepony.kvector.vector.Color
 import ru.dbotthepony.kvector.vector.nint.Vector2i
 import kotlin.collections.HashMap
 
 data class TileLayer(
-	val bakedProgramState: BakedProgramState,
+	val bakedProgramState: ConfiguredShaderProgram,
 	val vertexBuilder: DynamicVertexBuilder,
-	val zPos: Int)
+	val zPos: Int
+)
 
 class TileLayerList {
-	private val layers = HashMap<BakedProgramState, ArrayList<TileLayer>>()
+	private val layers = HashMap<ConfiguredShaderProgram, Int2ObjectAVLTreeMap<TileLayer>>()
 
-	fun getLayer(programState: BakedProgramState, zLevel: Int, compute: () -> DynamicVertexBuilder): DynamicVertexBuilder {
-		val list = layers.computeIfAbsent(programState) {ArrayList()}
-
-		for (layer in list) {
-			if (layer.zPos == zLevel) {
-				return layer.vertexBuilder
-			}
-		}
-
-		val computed = TileLayer(programState, compute.invoke(), zLevel)
-		list.add(computed)
-		return computed.vertexBuilder
+	/**
+	 * Получает геометрию слоя ([DynamicVertexBuilder]), который имеет программу для отрисовки [program] и располагается на [zLevel].
+	 *
+	 * Если такого слоя нет, вызывается [compute] и создаётся новый [TileLayer], затем возвращается результат [compute].
+	 */
+	fun computeIfAbsent(program: ConfiguredShaderProgram, zLevel: Int, compute: () -> DynamicVertexBuilder): DynamicVertexBuilder {
+		return layers.computeIfAbsent(program) { Int2ObjectAVLTreeMap() }.computeIfAbsent(zLevel, Int2ObjectFunction {
+			return@Int2ObjectFunction TileLayer(program, compute.invoke(), zLevel)
+		}).vertexBuilder
 	}
 
-	fun buildList(): List<TileLayer> {
+	fun buildSortedLayerList(): List<TileLayer> {
 		val list = ArrayList<TileLayer>()
 
 		for (getList in layers.values) {
-			list.addAll(getList)
+			list.addAll(getList.values)
 		}
 
 		list.sortBy {
@@ -56,19 +55,32 @@ class TileLayerList {
 	val isNotEmpty get() = layers.isNotEmpty()
 }
 
+/**
+ * Хранит в себе программы для отрисовки определённых [TileDefinition]
+ *
+ * Создаётся единожды как потомок [GLStateTracker]
+ */
 class TileRenderers(val state: GLStateTracker) {
 	private val foregroundTilePrograms = HashMap<GLTexture2D, ForegroundTileProgram>()
 	private val backgroundTilePrograms = HashMap<GLTexture2D, BackgroundTileProgram>()
-	private val tileRenderers = HashMap<String, TileRenderer>()
+	private val tileRenderersCache = HashMap<String, TileRenderer>()
+	private val modifierRenderersCache = HashMap<String, TileRenderer>()
 
-	operator fun get(tile: String): TileRenderer {
-		return tileRenderers.computeIfAbsent(tile) {
-			val def = Starbound.getTileDefinition(tile) // TODO: Пустой рендерер
+	fun getTileRenderer(defName: String): TileRenderer {
+		return tileRenderersCache.computeIfAbsent(defName) {
+			val def = Starbound.tilesAccess[defName] // TODO: Пустой рендерер
 			return@computeIfAbsent TileRenderer(state, def!!)
 		}
 	}
 
-	private inner class ForegroundTileProgram(private val texture: GLTexture2D) : BakedProgramState(state.shaderVertexTexture) {
+	fun getModifierRenderer(defName: String): TileRenderer {
+		return modifierRenderersCache.computeIfAbsent(defName) {
+			val def = Starbound.tileModifiersAccess[defName] // TODO: Пустой рендерер
+			return@computeIfAbsent TileRenderer(state, def!!)
+		}
+	}
+
+	private inner class ForegroundTileProgram(private val texture: GLTexture2D) : ConfiguredShaderProgram(state.shaderVertexTexture) {
 		override fun setup() {
 			super.setup()
 			state.activeTexture = 0
@@ -96,7 +108,7 @@ class TileRenderers(val state: GLStateTracker) {
 		}
 	}
 
-	private inner class BackgroundTileProgram(private val texture: GLTexture2D) : BakedProgramState(state.shaderVertexTextureColor) {
+	private inner class BackgroundTileProgram(private val texture: GLTexture2D) : ConfiguredShaderProgram(state.shaderVertexTextureColor) {
 		override fun setup() {
 			super.setup()
 			state.activeTexture = 0
@@ -127,16 +139,16 @@ class TileRenderers(val state: GLStateTracker) {
 	}
 
 	/**
-	 * Возвращает запечённое состояние shaderVertexTexture с данной текстурой
+	 * Возвращает запечённое состояние шейдера shaderVertexTexture с данной текстурой
 	 */
-	fun foreground(texture: GLTexture2D): BakedProgramState {
+	fun foreground(texture: GLTexture2D): ConfiguredShaderProgram {
 		return foregroundTilePrograms.computeIfAbsent(texture, ::ForegroundTileProgram)
 	}
 
 	/**
-	 * Возвращает запечённое состояние shaderVertexTextureColor с данной текстурой
+	 * Возвращает запечённое состояние шейдера shaderVertexTextureColor с данной текстурой
 	 */
-	fun background(texture: GLTexture2D): BakedProgramState {
+	fun background(texture: GLTexture2D): ConfiguredShaderProgram {
 		return backgroundTilePrograms.computeIfAbsent(texture, ::BackgroundTileProgram)
 	}
 
@@ -151,11 +163,30 @@ private enum class TileRenderTesselateResult {
 	HALT
 }
 
-class TileRenderer(val state: GLStateTracker, val tile: TileDefinition) {
-	val texture = state.loadNamedTexture(tile.renderParameters.absoluteTexturePath).also {
+private fun vertexTextureBuilder() = DynamicVertexBuilder(GLFlatAttributeList.VERTEX_TEXTURE, VertexType.QUADS)
+
+private class TileEqualityTester(val definition: TileDefinition) : EqualityRuleTester {
+	override fun test(tile: ChunkTile?): Boolean {
+		return tile?.def == definition
+	}
+}
+
+private class ModifierEqualityTester(val definition: MaterialModifier) : EqualityRuleTester {
+	override fun test(tile: ChunkTile?): Boolean {
+		return tile?.modifier == definition
+	}
+}
+
+class TileRenderer(val state: GLStateTracker, val def: IRenderableTile) {
+	val texture = state.loadNamedTexture(def.renderParameters.absoluteTexturePath).also {
 		it.textureMagFilter = GL_NEAREST
 	}
 
+	val equalityTester: EqualityRuleTester = when (def) {
+		is TileDefinition -> TileEqualityTester(def)
+		is MaterialModifier -> ModifierEqualityTester(def)
+	}
+
 	val bakedProgramState = state.tileRenderers.foreground(texture)
 	val bakedBackgroundProgramState = state.tileRenderers.background(texture)
 	// private var notifiedDepth = false
@@ -181,7 +212,7 @@ class TileRenderer(val state: GLStateTracker, val tile: TileDefinition) {
 			d += offset.y / PIXELS_IN_STARBOUND_UNITf
 		}
 
-		if (tile.renderParameters.variants == 0 || piece.texture != null || piece.variantStride == null) {
+		if (def.renderParameters.variants == 0 || piece.texture != null || piece.variantStride == null) {
 			val (u0, v0) = texture.pixelToUV(piece.texturePosition)
 			val (u1, v1) = texture.pixelToUV(piece.texturePosition + piece.textureSize)
 
@@ -192,7 +223,7 @@ class TileRenderer(val state: GLStateTracker, val tile: TileDefinition) {
 				d,
 				Z_LEVEL, VertexTransformers.uv(u0, v1, u1, v0))
 		} else {
-			val variant = (getter.randomDoubleFor(pos) * tile.renderParameters.variants).toInt()
+			val variant = (getter.randomDoubleFor(pos) * def.renderParameters.variants).toInt()
 
 			val (u0, v0) = texture.pixelToUV(piece.texturePosition + piece.variantStride * variant)
 			val (u1, v1) = texture.pixelToUV(piece.texturePosition + piece.textureSize + piece.variantStride * variant)
@@ -206,21 +237,24 @@ class TileRenderer(val state: GLStateTracker, val tile: TileDefinition) {
 		}
 	}
 
-	private fun tesselatePiece(matchPiece: RenderMatch, getter: ITileChunk, layers: TileLayerList, pos: Vector2i, thisBuilder: DynamicVertexBuilder, background: Boolean): TileRenderTesselateResult {
-		if (matchPiece.test(getter, tile, pos)) {
+	private fun tesselatePiece(
+		matchPiece: RenderMatch,
+		getter: ITileChunk,
+		layers: TileLayerList,
+		pos: Vector2i,
+		thisBuilder: DynamicVertexBuilder,
+		background: Boolean
+	): TileRenderTesselateResult {
+		if (matchPiece.test(getter, equalityTester, pos)) {
 			for (renderPiece in matchPiece.pieces) {
 				if (renderPiece.piece.texture != null) {
-					val program: BakedProgramState
-
-					if (background) {
-						program = state.tileRenderers.background(state.loadNamedTexture(renderPiece.piece.texture!!))
+					val program = if (background) {
+						state.tileRenderers.background(state.loadNamedTexture(renderPiece.piece.texture!!))
 					} else {
-						program = state.tileRenderers.foreground(state.loadNamedTexture(renderPiece.piece.texture!!))
+						state.tileRenderers.foreground(state.loadNamedTexture(renderPiece.piece.texture!!))
 					}
 
-					tesselateAt(renderPiece.piece, getter, layers.getLayer(program, tile.renderParameters.zLevel) {
-						return@getLayer DynamicVertexBuilder(GLFlatAttributeList.VERTEX_TEXTURE, VertexType.QUADS)
-					}, pos, renderPiece.offset)
+					tesselateAt(renderPiece.piece, getter, layers.computeIfAbsent(program, def.renderParameters.zLevel, ::vertexTextureBuilder), pos, renderPiece.offset)
 				} else {
 					tesselateAt(renderPiece.piece, getter, thisBuilder, pos, renderPiece.offset)
 				}
@@ -256,15 +290,13 @@ class TileRenderer(val state: GLStateTracker, val tile: TileDefinition) {
 	fun tesselate(getter: ITileChunk, layers: TileLayerList, pos: Vector2i, background: Boolean = false) {
 		// если у нас нет renderTemplate
 		// то мы просто не можем его отрисовать
-		val template = tile.renderTemplate
+		val template = def.renderTemplate
 
-		val builder = layers.getLayer(if (background) bakedBackgroundProgramState else bakedProgramState, tile.renderParameters.zLevel) {
-			return@getLayer DynamicVertexBuilder(GLFlatAttributeList.VERTEX_TEXTURE, VertexType.QUADS)
-		}
+		val vertexBuilder = layers.computeIfAbsent(if (background) bakedBackgroundProgramState else bakedProgramState, def.renderParameters.zLevel, ::vertexTextureBuilder)
 
 		for ((_, matcher) in template.matches) {
 			for (matchPiece in matcher) {
-				val matched = tesselatePiece(matchPiece, getter, layers, pos, builder, background)
+				val matched = tesselatePiece(matchPiece, getter, layers, pos, vertexBuilder, background)
 
 				if (matched == TileRenderTesselateResult.HALT) {
 					break
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/IRenderableTile.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/IRenderableTile.kt
new file mode 100644
index 00000000..efe28c76
--- /dev/null
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/IRenderableTile.kt
@@ -0,0 +1,6 @@
+package ru.dbotthepony.kstarbound.defs.tile
+
+sealed interface IRenderableTile {
+	val renderTemplate: RenderTemplate
+	val renderParameters: RenderParameters
+}
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/MaterialModifier.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/MaterialModifier.kt
index 78fd8ad8..7eb0847f 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/MaterialModifier.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/MaterialModifier.kt
@@ -6,16 +6,16 @@ import ru.dbotthepony.kstarbound.io.KConcreteTypeAdapter
 data class MaterialModifier(
 	val modId: Int,
 	val modName: String,
-	val itemDrop: String,
-	val description: String,
-	val health: Int,
-	val harvestLevel: Int,
-	val breaksWithTile: Boolean,
+	val itemDrop: String? = null,
+	val description: String = "...",
+	val health: Int = 0,
+	val harvestLevel: Int = 0,
+	val breaksWithTile: Boolean = true,
 	val miningSounds: List<String> = listOf(),
 	val miningParticle: String? = null,
-	val renderTemplate: RenderTemplate,
-	val renderParameters: RenderParameters
-) {
+	override val renderTemplate: RenderTemplate,
+	override val renderParameters: RenderParameters
+) : IRenderableTile {
 	init {
 		require(modId > 0) { "Invalid material modifier ID $modId" }
 	}
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/RenderTemplate.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/RenderTemplate.kt
index 05a92dc2..ef47ea20 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/RenderTemplate.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/RenderTemplate.kt
@@ -9,10 +9,10 @@ import com.google.gson.stream.JsonWriter
 import it.unimi.dsi.fastutil.objects.ObjectArraySet
 import org.apache.logging.log4j.LogManager
 import ru.dbotthepony.kstarbound.Starbound
-import ru.dbotthepony.kstarbound.io.CustomEnumTypeAdapter
 import ru.dbotthepony.kstarbound.io.EnumAdapter
 import ru.dbotthepony.kstarbound.io.KConcreteTypeAdapter
 import ru.dbotthepony.kstarbound.util.WriteOnce
+import ru.dbotthepony.kstarbound.world.ChunkTile
 import ru.dbotthepony.kstarbound.world.ITileGetter
 import ru.dbotthepony.kvector.vector.nint.Vector2i
 import java.util.concurrent.ConcurrentHashMap
@@ -37,6 +37,10 @@ data class RenderPiece(
 	}
 }
 
+fun interface EqualityRuleTester {
+	fun test(tile: ChunkTile?): Boolean
+}
+
 data class RenderRuleList(
 	val entries: List<Entry>,
 	val join: Combination = Combination.ALL
@@ -50,9 +54,9 @@ data class RenderRuleList(
 		val matchHue: Boolean = false,
 		val inverse: Boolean = false,
 	) {
-		private fun doTest(getter: ITileGetter, thisRef: TileDefinition, thisPos: Vector2i, offsetPos: Vector2i): Boolean {
+		private fun doTest(getter: ITileGetter, equalityTester: EqualityRuleTester, thisPos: Vector2i, offsetPos: Vector2i): Boolean {
 			return when (type) {
-				"EqualsSelf" -> getter[thisPos + offsetPos]?.def == thisRef
+				"EqualsSelf" -> equalityTester.test(getter[thisPos + offsetPos])
 				"Connects" -> getter[thisPos + offsetPos] != null
 
 				else -> {
@@ -65,12 +69,12 @@ data class RenderRuleList(
 			}
 		}
 
-		fun test(getter: ITileGetter, thisRef: TileDefinition, thisPos: Vector2i, offsetPos: Vector2i): Boolean {
+		fun test(getter: ITileGetter, equalityTester: EqualityRuleTester, thisPos: Vector2i, offsetPos: Vector2i): Boolean {
 			if (inverse) {
-				return !doTest(getter, thisRef, thisPos, offsetPos)
+				return !doTest(getter, equalityTester, thisPos, offsetPos)
 			}
 
-			return doTest(getter, thisRef, thisPos, offsetPos)
+			return doTest(getter, equalityTester, thisPos, offsetPos)
 		}
 
 		companion object {
@@ -87,11 +91,11 @@ data class RenderRuleList(
 		}
 	}
 
-	fun test(getter: ITileGetter, thisRef: TileDefinition, thisPos: Vector2i, offset: Vector2i): Boolean {
+	fun test(getter: ITileGetter, equalityTester: EqualityRuleTester, thisPos: Vector2i, offset: Vector2i): Boolean {
 		when (join) {
 			Combination.ALL -> {
 				for (entry in entries) {
-					if (!entry.test(getter, thisRef, thisPos, offset)) {
+					if (!entry.test(getter, equalityTester, thisPos, offset)) {
 						return false
 					}
 				}
@@ -101,7 +105,7 @@ data class RenderRuleList(
 
 			Combination.ANY -> {
 				for (entry in entries) {
-					if (entry.test(getter, thisRef, thisPos, offset)) {
+					if (entry.test(getter, equalityTester, thisPos, offset)) {
 						return true
 					}
 				}
@@ -144,8 +148,8 @@ data class RenderMatch(
 	) {
 		var rule by WriteOnce<RenderRuleList>()
 
-		fun test(getter: ITileGetter, thisRef: TileDefinition, thisPos: Vector2i): Boolean {
-			return rule.test(getter, thisRef, thisPos, offset)
+		fun test(getter: ITileGetter, equalityTester: EqualityRuleTester, thisPos: Vector2i): Boolean {
+			return rule.test(getter, equalityTester, thisPos, offset)
 		}
 
 		fun resolve(template: RenderTemplate) {
@@ -177,10 +181,12 @@ data class RenderMatch(
 	 * Если хотя бы один из них вернул false, весь тест возвращает false
 	 *
 	 * [subMatches] стоит итерировать только если это вернуло true
+	 *
+	 * [equalityTester] требуется для проверки раенства между "этим" тайлом и другим
 	 */
-	fun test(getter: ITileGetter, thisRef: TileDefinition, thisPos: Vector2i): Boolean {
+	fun test(tileAccess: ITileGetter, equalityTester: EqualityRuleTester, thisPos: Vector2i): Boolean {
 		for (matcher in matchAllPoints) {
-			if (!matcher.test(getter, thisRef, thisPos)) {
+			if (!matcher.test(tileAccess, equalityTester, thisPos)) {
 				return false
 			}
 		}
@@ -190,7 +196,7 @@ data class RenderMatch(
 		}
 
 		for (matcher in matchAnyPoints) {
-			if (matcher.test(getter, thisRef, thisPos)) {
+			if (matcher.test(tileAccess, equalityTester, thisPos)) {
 				return true
 			}
 		}
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/TileDefinition.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/TileDefinition.kt
index 6125c8d9..47068311 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/TileDefinition.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/defs/tile/TileDefinition.kt
@@ -19,9 +19,9 @@ data class TileDefinition(
 	val health: Double = 0.0,
 	val category: String,
 
-	val renderTemplate: RenderTemplate,
-	val renderParameters: RenderParameters,
-) {
+	override val renderTemplate: RenderTemplate,
+	override val renderParameters: RenderParameters,
+) : IRenderableTile {
 	companion object {
 		val ADAPTER = KConcreteTypeAdapter.Builder(TileDefinition::class)
 			.plain(
diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/world/Chunk.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/world/Chunk.kt
index 9f4167a2..98988ff4 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/world/Chunk.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/world/Chunk.kt
@@ -4,6 +4,7 @@ import ru.dbotthepony.kbox2d.api.BodyDef
 import ru.dbotthepony.kbox2d.api.FixtureDef
 import ru.dbotthepony.kbox2d.collision.shapes.PolygonShape
 import ru.dbotthepony.kbox2d.dynamics.B2Fixture
+import ru.dbotthepony.kstarbound.defs.tile.MaterialModifier
 import ru.dbotthepony.kstarbound.defs.tile.TileDefinition
 import ru.dbotthepony.kstarbound.world.entities.Entity
 import ru.dbotthepony.kstarbound.world.phys.RectTileFlooderDepthFirst
@@ -17,18 +18,47 @@ import kotlin.collections.HashSet
 /**
  * Представляет из себя класс, который содержит состояние тайла на заданной позиции
  */
-data class ChunkTile(val chunk: Chunk<*, *>.TileLayer, val def: TileDefinition) {
+class ChunkTile(val chunk: Chunk<*, *>.TileLayer, val def: TileDefinition) {
 	var color = 0
 		set(value) {
-			field = value
-			chunk.incChangeset()
+			if (value != field) {
+				field = value
+				chunk.incChangeset()
+			}
 		}
 
-	var forceVariant = -1
+	var variant = -1
 		set(value) {
-			field = value
-			chunk.incChangeset()
+			if (value != field) {
+				field = value
+				chunk.incChangeset()
+			}
 		}
+
+	var modifier: MaterialModifier? = null
+		set(value) {
+			if (value != field) {
+				field = value
+				chunk.incChangeset()
+			}
+		}
+
+	override fun equals(other: Any?): Boolean {
+		return other is ChunkTile && other.color == color && other.variant == variant && other.modifier === modifier && other.def === def
+	}
+
+	override fun toString(): String {
+		return "ChunkTile[$chunk, material = ${def.materialName}, color = $color, variant = $variant, modifier = ${modifier?.modName}]"
+	}
+
+	override fun hashCode(): Int {
+		var result = chunk.hashCode()
+		result = 31 * result + def.hashCode()
+		result = 31 * result + color
+		result = 31 * result + variant
+		result = 31 * result + (modifier?.hashCode() ?: 0)
+		return result
+	}
 }
 
 private fun ccwSortScore(point: Vector2d, axis: Vector2d): Double {