diff --git a/src/audio/audio.cpp b/src/audio/audio.cpp
index e8fd96e14..cfc84ce00 100644
--- a/src/audio/audio.cpp
+++ b/src/audio/audio.cpp
@@ -190,6 +190,10 @@ void audio::initialize(
             audio::get_channel(channel.name)->setVolume(value * value);
         }, true));
     }
+    objects_keeper.keepAlive(settings.acousticEffects.observe([=](auto value) {
+        if (value) return;
+        backend->setAcoustics(audio::Acoustics {});
+    }, true));
 
     if (inputEnabled) {
         ::input_device = backend->openInputDevice("", 44100, 1, 16);
diff --git a/src/coders/vec3.cpp b/src/coders/vec3.cpp
index 974b9a633..e00bdd662 100644
--- a/src/coders/vec3.cpp
+++ b/src/coders/vec3.cpp
@@ -23,6 +23,10 @@ enum AttributeType {
     COLOR
 };
 
+enum MaterialFlag {
+    SHADELESS = 1
+};
+
 struct VertexAttribute {
     AttributeType type;
     int flags;
@@ -62,7 +66,7 @@ static VertexAttribute load_attribute(ByteReader& reader) {
 static model::Mesh build_mesh(
     const std::vector<VertexAttribute>& attrs, 
     const util::Buffer<uint16_t>& indices,
-    const std::string& texture
+    const Material& material
 ) {
     const glm::vec3* coords = nullptr;
     const glm::vec2* uvs = nullptr;
@@ -112,7 +116,11 @@ static model::Mesh build_mesh(
         }
         vertices.push_back(std::move(vertex));
     }
-    return model::Mesh {texture, std::move(vertices)};
+    return model::Mesh {
+        material.name,
+        std::move(vertices),
+        (material.flags & MaterialFlag::SHADELESS) == 0
+    };
 }
 
 static model::Mesh load_mesh(
@@ -154,7 +162,7 @@ static model::Mesh load_mesh(
     return build_mesh(
         attributes,
         indices,
-        materials.at(materialId).name
+        materials.at(materialId)
     );
 }
 
diff --git a/src/devtools/stdin_cmd_reader.cpp b/src/devtools/stdin_cmd_reader.cpp
index 8e4a48c22..90dc07e2b 100644
--- a/src/devtools/stdin_cmd_reader.cpp
+++ b/src/devtools/stdin_cmd_reader.cpp
@@ -4,6 +4,7 @@
 #include "logic/CommandsInterpreter.hpp"
 #include "coders/json.hpp"
 #include "debug/Logger.hpp"
+#include "util/platform.hpp"
 
 #include <thread>
 #include <iostream>
@@ -18,7 +19,12 @@ void cmd::start_stdin_cmd_reader(Engine& engine) {
         logger.info() << "reader thread started";
         
         std::string line;
-        while (std::getline(std::cin, line)) {
+        while (true) {
+            if (!platform::stdin_has_data()) {
+                platform::sleep(10);
+                continue;
+            }
+            std::getline(std::cin, line);
             if (line.empty()) {
                 continue;
             }
diff --git a/src/graphics/render/BlockWrapsRenderer.cpp b/src/graphics/render/BlockWrapsRenderer.cpp
index 24a7955b8..fb72d3347 100644
--- a/src/graphics/render/BlockWrapsRenderer.cpp
+++ b/src/graphics/render/BlockWrapsRenderer.cpp
@@ -8,18 +8,16 @@
 #include "graphics/core/DrawContext.hpp"
 #include "graphics/render/MainBatch.hpp"
 #include "lighting/Lightmap.hpp"
-#include "objects/Player.hpp"
 #include "voxels/Block.hpp"
 #include "voxels/Chunks.hpp"
-#include "world/Level.hpp"
 
 #include <algorithm>
 
 BlockWrapsRenderer::BlockWrapsRenderer(
-    const Assets& assets, const Level& level, const Chunks& chunks
+    const Assets& assets, const Content& content, const Chunks& chunks
 )
     : assets(assets),
-      level(level),
+      content(content),
       chunks(chunks),
       batch(std::make_unique<MainBatch>(1024)) {
 }
@@ -43,16 +41,14 @@ void BlockWrapsRenderer::draw(BlockWrapper& wrapper, const Texture* texture) {
     }
 
     const voxel* vox = chunks.get(wrapper.position);
-    if (vox == nullptr || vox->id == BLOCK_VOID) {
+    if (vox == nullptr || vox->id == BLOCK_AIR) {
         return;
     }
     // one frame can be invalid due to texture change but ok
-    const auto& def =
-        level.content.getIndices()->blocks.require(vox->id);
+    const auto& def = content.getIndices()->blocks.require(vox->id);
 
     if (wrapper.modelType != def.getModel(vox->state.userbits).type) {
         wrapper.dirtySides = 0xFF;
-        refreshWrapper(wrapper);
     }
     glm::vec4 light(1, 1, 1, 0);
     if (wrapper.emission < 1.0f) {
@@ -95,6 +91,8 @@ void BlockWrapsRenderer::draw(BlockWrapper& wrapper, const Texture* texture) {
 }
 
 void BlockWrapsRenderer::refreshWrapper(BlockWrapper& wrapper) {
+    clearOrder(&wrapper);
+
     for (int i = 0; i < 6; i++) {
         if ((wrapper.cullingBits & (1 << i)) == 0) {
             continue;
@@ -104,15 +102,22 @@ void BlockWrapsRenderer::refreshWrapper(BlockWrapper& wrapper) {
         wrapper.texRegions[i] = texRegion;
         wrapper.uvRegions[i] = texRegion.region;
 
-        renderOrder.insert({texRegion.texture, &wrapper});
+        auto range = renderOrder.equal_range(texRegion.texture);
+        auto it =
+            std::find_if(range.first, range.second, [&wrapper](auto& elem) {
+                return elem.second == &wrapper;
+            });
+        if (it == range.second) {
+            renderOrder.emplace(texRegion.texture, &wrapper);
+        }
     }
     wrapper.dirtySides = 0x0;
 
     const voxel* vox = chunks.get(wrapper.position);
-    if (vox == nullptr || vox->id == BLOCK_VOID) {
+    if (vox == nullptr || vox->id == BLOCK_AIR) {
         return;
     }
-    const auto& def = level.content.getIndices()->blocks.require(vox->id);
+    const auto& def = content.getIndices()->blocks.require(vox->id);
     wrapper.modelType = def.getModel(vox->state.userbits).type;
     switch (wrapper.modelType) {
         case BlockModelType::AABB: {
@@ -133,7 +138,7 @@ void BlockWrapsRenderer::refreshWrapper(BlockWrapper& wrapper) {
     }
 }
 
-void BlockWrapsRenderer::draw(const DrawContext& pctx, const Player& player) {
+void BlockWrapsRenderer::draw(const DrawContext& pctx) {
     auto ctx = pctx.sub();
 
     auto& shader = assets.require<Shader>("entity");
@@ -145,7 +150,6 @@ void BlockWrapsRenderer::draw(const DrawContext& pctx, const Player& player) {
             refreshWrapper(*wrapper);
         }
     }
-
     for (const auto& [texture, wrapper] : renderOrder) {
         batch->setTexture(texture);
         draw(*wrapper, texture);
@@ -181,15 +185,17 @@ void BlockWrapsRenderer::remove(u64id_t id) {
     if (found == wrappers.end()) {
         return;
     }
-    auto wrapper = std::move(found->second);
+    clearOrder(found->second.get());
     wrappers.erase(id);
+}
 
+void BlockWrapsRenderer::clearOrder(const BlockWrapper* const wrapper) {
     auto it = renderOrder.begin();
     while (it != renderOrder.end()) {
-        if (it->second == wrapper.get()) {
+        if (it->second == wrapper) {
             it = renderOrder.erase(it);
         } else {
             ++it;
         }
     }
-}
+}
\ No newline at end of file
diff --git a/src/graphics/render/BlockWrapsRenderer.hpp b/src/graphics/render/BlockWrapsRenderer.hpp
index f19bf6b66..0f2ed8f7e 100644
--- a/src/graphics/render/BlockWrapsRenderer.hpp
+++ b/src/graphics/render/BlockWrapsRenderer.hpp
@@ -10,12 +10,9 @@
 #include <memory>
 #include <unordered_map>
 #include <map>
-#include <glm/vec4.hpp>
 
 class Assets;
-class Player;
-class Level;
-struct voxel;
+class Content;
 class Chunks;
 class Texture;
 class DrawContext;
@@ -36,7 +33,7 @@ struct BlockWrapper {
 
 class BlockWrapsRenderer {
     const Assets& assets;
-    const Level& level;
+    const Content& content;
     const Chunks& chunks;
     std::unique_ptr<MainBatch> batch;
 
@@ -47,13 +44,14 @@ class BlockWrapsRenderer {
     void draw(BlockWrapper& wrapper, const Texture* texture);
 
     void refreshWrapper(BlockWrapper& wrapper);
+    void clearOrder(const BlockWrapper* const wrapper);
 public:
     BlockWrapsRenderer(
-        const Assets& assets, const Level& level, const Chunks& chunks
+        const Assets& assets, const Content& content, const Chunks& chunks
     );
     ~BlockWrapsRenderer();
 
-    void draw(const DrawContext& ctx, const Player& player);
+    void draw(const DrawContext& ctx);
 
     u64id_t add(
         const glm::ivec3& position,
diff --git a/src/graphics/render/WorldRenderer.cpp b/src/graphics/render/WorldRenderer.cpp
index 4157eeb98..e1f683b96 100644
--- a/src/graphics/render/WorldRenderer.cpp
+++ b/src/graphics/render/WorldRenderer.cpp
@@ -94,9 +94,9 @@ WorldRenderer::WorldRenderer(
         assets, level, *player.chunks, engine.getSettings().graphics
       )),
       texts(std::make_unique<TextsRenderer>(*batch3d, assets, *frustumCulling)),
-      blockWraps(
-          std::make_unique<BlockWrapsRenderer>(assets, level, *player.chunks)
-      ) {
+      blockWraps(std::make_unique<BlockWrapsRenderer>(
+          assets, level.content, *player.chunks
+      )) {
     auto& settings = engine.getSettings();
     level.events->listen(
         LevelEventType::CHUNK_HIDDEN,
@@ -214,7 +214,7 @@ void WorldRenderer::renderOpaque(
     setupWorldShader(shader, camera, settings, fogFactor);
 
     chunksRenderer->drawChunks(camera, shader);
-    blockWraps->draw(ctx, player);
+    blockWraps->draw(ctx);
 
     int cloudsQuality = settings.graphics.cloudsQuality.get();
     if (cloudsQuality > 0) {
diff --git a/src/logic/scripting/lua/libs/libblockwraps.cpp b/src/logic/scripting/lua/libs/libblockwraps.cpp
index 5b28f7dbb..084dd6b8b 100644
--- a/src/logic/scripting/lua/libs/libblockwraps.cpp
+++ b/src/logic/scripting/lua/libs/libblockwraps.cpp
@@ -34,10 +34,14 @@ static int l_set_pos(lua::State* L) {
 
 static int l_set_texture(lua::State* L) {
     if (auto wrapper = renderer->blockWraps->get(lua::tointeger(L, 1))) {
+        const char* newTexture = lua::require_string(L, 2);
+
         for (int i = 0; i < wrapper->textureFaces.size(); i++) {
-            wrapper->textureFaces[i] = lua::require_string(L, 2);
+            if (wrapper->textureFaces[i] != newTexture) {
+                wrapper->textureFaces[i] = newTexture;
+                wrapper->dirtySides = 0xFF;
+            }
         }
-        wrapper->dirtySides = 0xFF;
     }
     return 0;
 }
@@ -52,7 +56,7 @@ static int l_set_faces(lua::State* L) {
                     wrapper->dirtySides |= (1 << i);
                 }
             } else {
-                auto texture = lua::require_string(L, 2 + i);;
+                auto texture = lua::require_string(L, 2 + i);
                 if ((wrapper->cullingBits & (1 << i)) == 0x0
                  || wrapper->textureFaces[i] != texture) {
                     wrapper->cullingBits |= (1 << i);
@@ -73,7 +77,6 @@ static int l_set_tints(lua::State* L) {
                 wrapper->tints[i] = lua::tovec3(L, 2 + i);
             }
         }
-        wrapper->dirtySides = 0xFF;
     }
     return 0;
 }
diff --git a/src/util/platform.cpp b/src/util/platform.cpp
index a7ba041db..f9ecf070d 100644
--- a/src/util/platform.cpp
+++ b/src/util/platform.cpp
@@ -14,8 +14,10 @@
 
 #ifdef _WIN32
 #include <Windows.h>
+#include <conio.h>
 #pragma comment(lib, "winmm.lib")
 #else
+#include <sys/poll.h>
 #include <unistd.h>
 #endif
 
@@ -290,3 +292,14 @@ void platform::new_engine_instance(const std::vector<std::string>& args) {
     }
 #endif
 }
+
+bool platform::stdin_has_data() {
+#ifdef _WIN32
+    return _kbhit();
+#else
+    struct pollfd fds;
+    fds.fd = STDIN_FILENO;
+    fds.events = POLLIN;
+    return poll(&fds, 1, 0) == 1;
+#endif
+}
\ No newline at end of file
diff --git a/src/util/platform.hpp b/src/util/platform.hpp
index 148c64c46..620178fc1 100644
--- a/src/util/platform.hpp
+++ b/src/util/platform.hpp
@@ -21,4 +21,6 @@ namespace platform {
     void new_engine_instance(const std::vector<std::string>& args);
     /// @brief Open URL in web browser 
     bool open_url(const std::string& url);
+    /// @brief Check if stdin has input
+    bool stdin_has_data();
 }