diff --git a/CMakeLists.txt b/CMakeLists.txt
index 27a9d507b..62d9ba100 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -42,7 +42,7 @@ target_link_options(VoxelEngine PRIVATE $<$<CXX_COMPILER_ID:GNU>:-no-pie>)
 add_custom_command(
     TARGET VoxelEngine
     POST_BUILD
-    COMMAND ${CMAKE_COMMAND} -E copy_directory_if_different
+    COMMAND ${CMAKE_COMMAND} -E copy_directory
             ${CMAKE_CURRENT_SOURCE_DIR}/res $<TARGET_FILE_DIR:VoxelEngine>/res)
 
 if(VOXELENGINE_BUILD_TESTS)
diff --git a/doc/ru/vca.md b/doc/ru/vca.md
index 2cba3c3ab..deecad81b 100644
--- a/doc/ru/vca.md
+++ b/doc/ru/vca.md
@@ -138,5 +138,5 @@ VCA файл состоит из набора директив, порядок 
 
 
 >[!WARNING]
-> Использование незадокументированных функций может иметь иметь любые незадокументированные последствия.
+> Использование незадокументированных функций может иметь любые незадокументированные последствия.
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 802c06e1a..a5c9d8176 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -14,6 +14,13 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
     find_package(OpenAL CONFIG REQUIRED)
 else()
     find_package(OpenAL REQUIRED)
+    if(NOT TARGET OpenAL::OpenAL)
+        add_library(OpenAL::OpenAL UNKNOWN IMPORTED)
+        set_target_properties(OpenAL::OpenAL PROPERTIES
+            IMPORTED_LOCATION "${OPENAL_LIBRARY}"
+            INTERFACE_INCLUDE_DIRECTORIES "${OPENAL_INCLUDE_DIR}"
+        )
+    endif()
 endif()
 find_package(ZLIB REQUIRED)
 find_package(PNG REQUIRED)
diff --git a/src/coders/obj.cpp b/src/coders/obj.cpp
index d7ff244aa..6da92a66c 100644
--- a/src/coders/obj.cpp
+++ b/src/coders/obj.cpp
@@ -10,53 +10,69 @@ class ObjParser : BasicParser<char> {
     std::vector<glm::vec2> uvs {{0, 0}};
     std::vector<glm::vec3> normals {{0, 1, 0}};
 
-    // TODO: refactor
-    void parseFace(Mesh& mesh) {
-        std::vector<Vertex> vertices;
-        while (hasNext()) {
-            auto c = peekInLine();
-            if (c == '\n') {
-                break;
-            } else if (hasNext()) {
-                uint indices[3] {};
-                uint i = 0;
-                do {
-                    char next = peekInLine();
-                    if (is_digit(next)) {
-                        indices[i] = parseSimpleInt(10);
-                        if (hasNext() && peekInLine() == '/') {
-                            pos++;
-                        }
-                    } else if (next == '/') {
-                        pos++;
-                    } else {
-                        break;
-                    }
-                } while (hasNext() && peekInLine() != '\n' && ++i < 3);
+    Vertex parseFaceVertex() {
+        auto parseIndex = [&]() -> uint {
+            if (!hasNext() || !is_digit(peekInLine())) {
+                return 0;
+            }
+            return parseSimpleInt(10);
+        };
 
-                vertices.push_back(Vertex {
-                    coords[indices[0]], uvs[indices[1]], normals[indices[2]]});
+        uint coord = parseIndex();
+        uint uv = 0;
+        uint normal = 0;
+
+        if (hasNext() && peekInLine() == '/') {
+            pos++;
+
+            uv = parseIndex();
+
+            if (hasNext() && peekInLine() == '/') {
+                pos++;
+                normal = parseIndex();
             }
         }
-        if (hasNext() && peekInLine() != '\n') {
-            skipLine();
-        }
+
+        return Vertex {
+            coords[coord], 
+            uvs[uv], 
+            normals[normal]
+        };
+    }
+
+    void triangulate(const std::vector<Vertex>& vertices, std::vector<Vertex>& output) {
         if (vertices.size() >= 3) {
             for (size_t j = 0; j < vertices.size() - 2; j++) {
-                mesh.vertices.push_back(vertices[0]);
+                output.push_back(vertices[0]);
                 for (size_t i = 1; i < 3; i++) {
-                    mesh.vertices.push_back(vertices[i + j]);
+                    output.push_back(vertices[i + j]);
                 }
             }
         }
     }
-public:
-    ObjParser(const std::string_view file, const std::string_view src)
-        : BasicParser(file, src) {
+
+    void parseFace(Mesh& mesh) {
+        std::vector<Vertex> vertices;
+        while (hasNext() && peekInLine() != '\n') {
+            vertices.push_back(parseFaceVertex());
+        }
+        triangulate(vertices, mesh.vertices);
     }
 
-    std::unique_ptr<Model> parse() {
-        // first iteration - collecting vertex data
+    glm::vec3 parseVec3() {
+        float x = parseNumber().asNumber();
+        float y = parseNumber().asNumber();
+        float z = parseNumber().asNumber();
+        return glm::vec3 {x, y, z};
+    }
+
+    glm::vec2 parseVec2() {
+        float x = parseNumber().asNumber();
+        float y = parseNumber().asNumber();
+        return glm::vec2 {x, y};
+    }
+
+    void collectVertexData() {
         while (hasNext()) {
             if (peek() == '#') {
                 skipLine();
@@ -64,27 +80,18 @@ public:
             }
             auto cmd = parseName();
             if (cmd == "v") {
-                float x = parseNumber().asNumber();
-                float y = parseNumber().asNumber();
-                float z = parseNumber().asNumber();
-                coords.emplace_back(x, y, z);
+                coords.emplace_back(parseVec3());
             } else if (cmd == "vt") {
-                float u = parseNumber().asNumber();
-                float v = parseNumber().asNumber();
-                uvs.emplace_back(u, v);
+                uvs.emplace_back(parseVec2());
             } else if (cmd == "vn") {
-                float x = parseNumber().asNumber();
-                float y = parseNumber().asNumber();
-                float z = parseNumber().asNumber();
-                normals.emplace_back(x, y, z);
+                normals.emplace_back(parseVec3());
             } else {
                 skipLine();
             }
         }
-        // second iteration - building meshes
-        reset();
+    }
 
-        auto model = std::make_unique<Model>();
+    void buildMeshes(Model& model) {
         std::string texture;
         while (hasNext()) {
             if (peek() != '#' && parseName() == "usemtl") {
@@ -95,7 +102,7 @@ public:
             skipLine();
         }
         do {
-            Mesh* mesh = &model->addMesh(texture);
+            Mesh* mesh = &model.addMesh(texture);
             while (hasNext()) {
                 if (peek() == '#') {
                     skipLine();
@@ -105,7 +112,7 @@ public:
                 if (cmd == "usemtl") {
                     skipWhitespace();
                     texture = readUntilEOL();
-                    mesh = &model->addMesh(texture);
+                    mesh = &model.addMesh(texture);
                     break;
                 } else if (cmd == "f") {
                     parseFace(*mesh);
@@ -113,6 +120,19 @@ public:
                 skipLine();
             }
         } while (hasNext());
+    }
+public:
+    ObjParser(const std::string_view file, const std::string_view src)
+        : BasicParser(file, src) {
+    }
+
+    std::unique_ptr<Model> parse() {
+        // first iteration - collecting vertex data
+        collectVertexData();
+        // second iteration - building meshes
+        reset();
+        auto model = std::make_unique<Model>();
+        buildMeshes(*model);
         model->clean();
         return model;
     }
diff --git a/src/graphics/core/GBuffer.cpp b/src/graphics/core/GBuffer.cpp
index 30b0c817a..0d8e833e4 100644
--- a/src/graphics/core/GBuffer.cpp
+++ b/src/graphics/core/GBuffer.cpp
@@ -8,143 +8,62 @@ using namespace advanced_pipeline;
 
 static debug::Logger logger("gl-gbuffer");
 
-// TODO: REFACTOR
-
-void GBuffer::createColorBuffer() {
-    if (colorBuffer == 0)
-        glGenTextures(1, &colorBuffer);
-    glBindTexture(GL_TEXTURE_2D, colorBuffer);
-    glTexImage2D(
-        GL_TEXTURE_2D,
-        0,
-        GL_RGB,
-        width,
-        height,
-        0,
-        GL_RGB,
-        GL_UNSIGNED_BYTE,
-        nullptr
-    );
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-    glFramebufferTexture2D(
-        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, colorBuffer, 0
-    );
+void GBuffer::createBuffer(Buffer& buffer) {
+    if (buffer.buffer == 0) {
+        if (&buffer == &depthBuffer)
+            glGenRenderbuffers(1, &depthBuffer.buffer);
+        else
+            glGenTextures(1, &buffer.buffer);
+    }
+    if (&buffer == &depthBuffer){
+        glBindRenderbuffer(GL_RENDERBUFFER, depthBuffer.buffer);
+        glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, width, height);
+        glFramebufferRenderbuffer(
+            GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthBuffer.buffer
+        );
+    } else {
+        glBindTexture(GL_TEXTURE_2D, buffer.buffer);
+        glTexImage2D(
+            GL_TEXTURE_2D,
+            0,
+            buffer.internalformat,
+            width,
+            height,
+            0,
+            buffer.format,
+            buffer.type,
+            nullptr
+        );
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+        if (&buffer != &ssaoBuffer)
+        {
+            glFramebufferTexture2D(
+                GL_FRAMEBUFFER, buffer.attachment, GL_TEXTURE_2D, buffer.buffer, 0
+            );
+        }
+    }
 }
 
-void GBuffer::createPositionsBuffer() {
-    if (positionsBuffer == 0)
-        glGenTextures(1, &positionsBuffer);
-    glBindTexture(GL_TEXTURE_2D, positionsBuffer);
-    glTexImage2D(
-        GL_TEXTURE_2D,
-        0,
-        GL_RGBA16F,
-        width,
-        height,
-        0,
-        GL_RGBA,
-        GL_FLOAT,
-        nullptr
-    );
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-    glFramebufferTexture2D(
-        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, GL_TEXTURE_2D, positionsBuffer, 0
-    );
-}
+GBuffer::GBuffer(uint width, uint height)
+    : width(width), height(height), 
 
-void GBuffer::createNormalsBuffer() {
-    if (normalsBuffer == 0)
-        glGenTextures(1, &normalsBuffer);
-    glBindTexture(GL_TEXTURE_2D, normalsBuffer);
-    glTexImage2D(
-        GL_TEXTURE_2D,
-        0,
-        GL_RGBA16F,
-        width,
-        height,
-        0,
-        GL_RGB,
-        GL_FLOAT,
-        nullptr
-    );
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-    glFramebufferTexture2D(
-        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D, normalsBuffer, 0
-    );
-}
-
-void GBuffer::createEmissionBuffer() {
-    if (emissionBuffer == 0)
-        glGenTextures(1, &emissionBuffer);
-    glBindTexture(GL_TEXTURE_2D, emissionBuffer);
-    glTexImage2D(
-        GL_TEXTURE_2D,
-        0,
-        GL_R8,
-        width,
-        height,
-        0,
-        GL_RED,
-        GL_FLOAT,
-        nullptr
-    );
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-    glFramebufferTexture2D(
-        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT3, GL_TEXTURE_2D, emissionBuffer, 0
-    );
-}
-
-void GBuffer::createDepthBuffer() {
-    if (depthBuffer == 0)
-        glGenRenderbuffers(1, &depthBuffer);
-    glBindRenderbuffer(GL_RENDERBUFFER, depthBuffer);
-    glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, width, height);
-    glFramebufferRenderbuffer(
-        GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, depthBuffer
-    );
-}
-
-void GBuffer::createSSAOBuffer() {
-    if (ssaoBuffer == 0)
-        glGenTextures(1, &ssaoBuffer);
-    glBindTexture(GL_TEXTURE_2D, ssaoBuffer);
-    glTexImage2D(
-        GL_TEXTURE_2D,
-        0,
-        GL_R16F,
-        width,
-        height,
-        0,
-        GL_RED,
-        GL_FLOAT,
-        nullptr
-    );
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-}
-
-GBuffer::GBuffer(uint width, uint height) : width(width), height(height) {
+      colorBuffer       {0, GL_RGB,     GL_RGB,  GL_UNSIGNED_BYTE, GL_COLOR_ATTACHMENT0},
+      positionsBuffer   {0, GL_RGBA16F, GL_RGBA, GL_FLOAT,         GL_COLOR_ATTACHMENT1},
+      normalsBuffer     {0, GL_RGBA16F, GL_RGB,  GL_FLOAT,         GL_COLOR_ATTACHMENT2},
+      emissionBuffer    {0, GL_R8,      GL_RED,  GL_FLOAT,         GL_COLOR_ATTACHMENT3},
+      depthBuffer       {0, 0,          0,       0,                0},
+      ssaoBuffer        {0, GL_R16F,    GL_RED,  GL_FLOAT,         0}
+{
     glGenFramebuffers(1, &fbo);
     glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 
-    createColorBuffer();
-    createPositionsBuffer();
-    createNormalsBuffer();
-    createEmissionBuffer();
+    createBuffer(colorBuffer);
+    createBuffer(positionsBuffer);
+    createBuffer(normalsBuffer);
+    createBuffer(emissionBuffer);
 
     GLenum attachments[4] = {
         GL_COLOR_ATTACHMENT0,
@@ -154,7 +73,7 @@ GBuffer::GBuffer(uint width, uint height) : width(width), height(height) {
     };
     glDrawBuffers(4, attachments);
 
-    createDepthBuffer();
+    createBuffer(depthBuffer);
 
     int status;
     if ((status = glCheckFramebufferStatus(GL_FRAMEBUFFER)) != GL_FRAMEBUFFER_COMPLETE) {
@@ -164,9 +83,9 @@ GBuffer::GBuffer(uint width, uint height) : width(width), height(height) {
 
     glGenFramebuffers(1, &ssaoFbo);
     glBindFramebuffer(GL_FRAMEBUFFER, ssaoFbo);
-    createSSAOBuffer();
+    createBuffer(ssaoBuffer);
     glFramebufferTexture2D(
-        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, ssaoBuffer, 0
+        GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, ssaoBuffer.buffer, 0
     );
     GLenum ssaoAttachments[1] = {GL_COLOR_ATTACHMENT0};
     glDrawBuffers(1, ssaoAttachments);
@@ -179,12 +98,12 @@ GBuffer::GBuffer(uint width, uint height) : width(width), height(height) {
 }
 
 GBuffer::~GBuffer() {
-    glDeleteTextures(1, &colorBuffer);
-    glDeleteTextures(1, &positionsBuffer);
-    glDeleteTextures(1, &normalsBuffer);
-    glDeleteTextures(1, &emissionBuffer);
-    glDeleteTextures(1, &ssaoBuffer);
-    glDeleteRenderbuffers(1, &depthBuffer);
+    glDeleteTextures(1, &colorBuffer.buffer);
+    glDeleteTextures(1, &positionsBuffer.buffer);
+    glDeleteTextures(1, &normalsBuffer.buffer);
+    glDeleteTextures(1, &emissionBuffer.buffer);
+    glDeleteTextures(1, &ssaoBuffer.buffer);
+    glDeleteRenderbuffers(1, &depthBuffer.buffer);
     glDeleteFramebuffers(1, &fbo);
     glDeleteFramebuffers(1, &ssaoFbo);
 }
@@ -204,23 +123,23 @@ void GBuffer::unbind() const {
 
 void GBuffer::bindBuffers() const {
     glActiveTexture(GL_TEXTURE0 + TARGET_EMISSION);
-    glBindTexture(GL_TEXTURE_2D, emissionBuffer);
+    glBindTexture(GL_TEXTURE_2D, emissionBuffer.buffer);
 
     glActiveTexture(GL_TEXTURE0 + TARGET_NORMALS);
-    glBindTexture(GL_TEXTURE_2D, normalsBuffer);
+    glBindTexture(GL_TEXTURE_2D, normalsBuffer.buffer);
 
     glActiveTexture(GL_TEXTURE0 + TARGET_POSITIONS);
-    glBindTexture(GL_TEXTURE_2D, positionsBuffer);
+    glBindTexture(GL_TEXTURE_2D, positionsBuffer.buffer);
 
     glActiveTexture(GL_TEXTURE0 + TARGET_COLOR);
-    glBindTexture(GL_TEXTURE_2D, colorBuffer);
+    glBindTexture(GL_TEXTURE_2D, colorBuffer.buffer);
 
     if (TARGET_COLOR != 0)
         glActiveTexture(GL_TEXTURE0);
 }
 
 void GBuffer::bindSSAOBuffer() const {
-    glBindTexture(GL_TEXTURE_2D, ssaoBuffer);
+    glBindTexture(GL_TEXTURE_2D, ssaoBuffer.buffer);
 }
 
 void GBuffer::bindDepthBuffer(int drawFbo) {
@@ -239,24 +158,24 @@ void GBuffer::resize(uint width, uint height) {
 
     glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 
-    createDepthBuffer();
-    createColorBuffer();
-    createPositionsBuffer();
-    createNormalsBuffer();
-    createEmissionBuffer();
+    createBuffer(depthBuffer);
+    createBuffer(colorBuffer);
+    createBuffer(positionsBuffer);
+    createBuffer(normalsBuffer);
+    createBuffer(emissionBuffer);
 
     glBindTexture(GL_TEXTURE_2D, 0);
     glBindFramebuffer(GL_FRAMEBUFFER, 0);
 
     glBindFramebuffer(GL_FRAMEBUFFER, ssaoFbo);
-    createSSAOBuffer();
+    createBuffer(ssaoBuffer);
     glBindTexture(GL_TEXTURE_2D, 0);
     glBindFramebuffer(GL_FRAMEBUFFER, 0);
 }
 
 std::unique_ptr<ImageData> GBuffer::toImage() const {
     auto data = std::make_unique<ubyte[]>(width * height * 3);
-    glBindTexture(GL_TEXTURE_2D, colorBuffer);
+    glBindTexture(GL_TEXTURE_2D, colorBuffer.buffer);
     glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_UNSIGNED_BYTE, data.get());
     glBindTexture(GL_TEXTURE_2D, 0);
     return std::make_unique<ImageData>(
diff --git a/src/graphics/core/GBuffer.hpp b/src/graphics/core/GBuffer.hpp
index a549b720b..1614b39ea 100644
--- a/src/graphics/core/GBuffer.hpp
+++ b/src/graphics/core/GBuffer.hpp
@@ -25,22 +25,25 @@ public:
 
     std::unique_ptr<ImageData> toImage() const;
 private:
+    struct Buffer {
+        uint buffer;
+        const int internalformat;
+        const uint format;
+        const uint type;
+        const uint attachment;
+    };
+
     uint width;
     uint height;
 
     uint fbo;
-    uint colorBuffer = 0;
-    uint positionsBuffer = 0;
-    uint normalsBuffer = 0;
-    uint emissionBuffer = 0;
-    uint depthBuffer = 0;
-    uint ssaoFbo = 0;
-    uint ssaoBuffer = 0;
+    Buffer colorBuffer;
+    Buffer positionsBuffer;
+    Buffer normalsBuffer;
+    Buffer emissionBuffer;
+    Buffer depthBuffer;
+    uint ssaoFbo;
+    Buffer ssaoBuffer;
 
-    void createColorBuffer();
-    void createPositionsBuffer();
-    void createNormalsBuffer();
-    void createEmissionBuffer();
-    void createDepthBuffer();
-    void createSSAOBuffer();
+    void createBuffer(Buffer& buffer);
 };
diff --git a/src/graphics/core/PostProcessing.cpp b/src/graphics/core/PostProcessing.cpp
index ec491c527..b50fad388 100644
--- a/src/graphics/core/PostProcessing.cpp
+++ b/src/graphics/core/PostProcessing.cpp
@@ -1,4 +1,7 @@
 #include "PostProcessing.hpp"
+
+#include <GL/glew.h>
+
 #include "Mesh.hpp"
 #include "Shader.hpp"
 #include "GBuffer.hpp"
@@ -18,7 +21,7 @@ using namespace advanced_pipeline;
 
 PostProcessing::PostProcessing(size_t effectSlotsCount)
     : effectSlots(effectSlotsCount) {
-    // Fullscreen quad mesh bulding
+    // Fullscreen quad mesh building
     PostProcessingVertex meshData[] {
         {{-1.0f, -1.0f}},
         {{-1.0f, 1.0f}},
@@ -36,7 +39,7 @@ PostProcessing::PostProcessing(size_t effectSlotsCount)
         glm::vec3 noise(
             (rand() / static_cast<float>(RAND_MAX)) * 2.0 - 1.0, 
             (rand() / static_cast<float>(RAND_MAX)) * 2.0 - 1.0, 
-            0.0f); 
+            0.0f);
         ssaoNoise.push_back(noise);
     }  
     glGenTextures(1, &noiseTexture);
@@ -49,7 +52,9 @@ PostProcessing::PostProcessing(size_t effectSlotsCount)
     glBindTexture(GL_TEXTURE_2D, 0);
 }
 
-PostProcessing::~PostProcessing() = default;
+PostProcessing::~PostProcessing() {
+    glDeleteTextures(1, &noiseTexture);
+}
 
 void PostProcessing::use(DrawContext& context, bool gbufferPipeline) {
     const auto& vp = context.getViewport();
@@ -105,8 +110,9 @@ void PostProcessing::configureEffect(
     shader.uniform3f("u_cameraPos", camera.position);
     shader.uniform1f("u_timer", timer);
     shader.uniformMatrix("u_projection", camera.getProjection());
-    shader.uniformMatrix("u_view", camera.getView());
-    shader.uniformMatrix("u_inverseView", glm::inverse(camera.getView()));
+    const auto view = camera.getView();
+    shader.uniformMatrix("u_view", view);
+    shader.uniformMatrix("u_inverseView", glm::inverse(view));
 }
 
 void PostProcessing::renderDeferredShading(
@@ -150,7 +156,7 @@ void PostProcessing::renderDeferredShading(
         gbuffer->bindSSAOBuffer();
 
         glActiveTexture(GL_TEXTURE0);
-        
+
         gbuffer->bindBuffers();
 
         auto& effect = assets.require<PostEffect>("deferred_lighting");
diff --git a/src/graphics/core/PostProcessing.hpp b/src/graphics/core/PostProcessing.hpp
index f9d50b75b..095e4e2b3 100644
--- a/src/graphics/core/PostProcessing.hpp
+++ b/src/graphics/core/PostProcessing.hpp
@@ -24,8 +24,6 @@ struct PostProcessingVertex {
 };
 
 /// @brief Framebuffer with blitting with shaders.
-/// @attention Current implementation does not support multiple render passes 
-/// for multiple effects. Will be implemented in v0.21
 class PostProcessing {
 public:
     PostProcessing(size_t effectSlotsCount);
@@ -73,12 +71,12 @@ private:
 
     void refreshFbos(uint width, uint height);
 
-    /// @brief Main framebuffer (lasy field)
+    /// @brief Main framebuffer (lazy field)
     std::unique_ptr<Framebuffer> fbo;
     std::unique_ptr<Framebuffer> fboSecond;
     /// @brief Fullscreen quad mesh as the post-processing canvas
     std::unique_ptr<Mesh<PostProcessingVertex>> quadMesh;
     std::vector<std::shared_ptr<PostEffect>> effectSlots;
     std::unique_ptr<GBuffer> gbuffer;
-    uint noiseTexture;
+    uint noiseTexture = 0;
 };
diff --git a/src/graphics/render/WorldRenderer.cpp b/src/graphics/render/WorldRenderer.cpp
index 27dd4dcdd..963468628 100644
--- a/src/graphics/render/WorldRenderer.cpp
+++ b/src/graphics/render/WorldRenderer.cpp
@@ -324,7 +324,8 @@ void WorldRenderer::renderInWorldLines(
         auto ctx = pctx.sub(lineBatch.get());
         bool culling = engine.getSettings().graphics.frustumCulling.get();
         level.entities->renderDebug(
-            *lineBatch, culling ? frustumCulling.get() : nullptr, ctx
+            *lineBatch, culling ? frustumCulling.get() : nullptr, ctx,
+            player.currentCamera.get() == player.fpCamera.get() ? player.getEntity() : 0
         );
     }
 }
diff --git a/src/graphics/ui/GUI.cpp b/src/graphics/ui/GUI.cpp
index a5f3010ff..8070d58b0 100644
--- a/src/graphics/ui/GUI.cpp
+++ b/src/graphics/ui/GUI.cpp
@@ -1,8 +1,5 @@
 #include "GUI.hpp"
 
-#include <algorithm>
-#include <utility>
-
 #include "assets/Assets.hpp"
 #include "debug/Logger.hpp"
 #include "elements/Label.hpp"
@@ -17,7 +14,6 @@
 #include "graphics/core/Shader.hpp"
 #include "graphics/core/Font.hpp"
 #include "graphics/core/DrawContext.hpp"
-#include "graphics/core/Shader.hpp"
 #include "gui_util.hpp"
 #include "window/Camera.hpp"
 #include "window/Window.hpp"
diff --git a/src/logic/scripting/lua/libs/libentity.cpp b/src/logic/scripting/lua/libs/libentity.cpp
index 2d3eeecea..af7a938ad 100644
--- a/src/logic/scripting/lua/libs/libentity.cpp
+++ b/src/logic/scripting/lua/libs/libentity.cpp
@@ -71,6 +71,9 @@ static int l_get_def(lua::State* L) {
 static int l_spawn(lua::State* L) {
     auto level = controller->getLevel();
     auto defname = lua::tostring(L, 1);
+    if (defname == nullptr) {
+        throw std::runtime_error("string expected, got nil");
+    }
     auto& def = content->entities.require(defname);
     auto pos = lua::tovec3(L, 2);
     dv::value args = nullptr;
diff --git a/src/logic/scripting/lua/libs/libvecn.cpp b/src/logic/scripting/lua/libs/libvecn.cpp
index e0a5ac3dd..4254332e9 100644
--- a/src/logic/scripting/lua/libs/libvecn.cpp
+++ b/src/logic/scripting/lua/libs/libvecn.cpp
@@ -211,59 +211,36 @@ static int l_tostring(lua::State* L) {
     return lua::pushstring(L, ss.str());
 }
 
+#define VECLIB_BASE(n)                                  \
+{"add", lua::wrap<l_binop<n, std::plus>>},              \
+{"sub", lua::wrap<l_binop<n, std::minus>>},             \
+{"mul", lua::wrap<l_binop<n, std::multiplies>>},        \
+{"div", lua::wrap<l_binop<n, std::divides>>},           \
+{"distance", lua::wrap<l_distance<n>>},                 \
+{"normalize", lua::wrap<l_unaryop<n, glm::normalize>>}, \
+{"length", lua::wrap<l_scalar_op<n, glm::length>>},     \
+{"tostring", lua::wrap<l_tostring<n>>},                 \
+{"abs", lua::wrap<l_unaryop<n, glm::abs>>},             \
+{"round", lua::wrap<l_unaryop<n, glm::round>>},         \
+{"inverse", lua::wrap<l_inverse<n>>},                   \
+{"pow", lua::wrap<l_pow<n>>},                           \
+{"dot", lua::wrap<l_dot<n>>},                           \
+{"mix", lua::wrap<l_mix<n>>},
+
 const luaL_Reg vec2lib[] = {
-    {"add", lua::wrap<l_binop<2, std::plus>>},
-    {"sub", lua::wrap<l_binop<2, std::minus>>},
-    {"mul", lua::wrap<l_binop<2, std::multiplies>>},
-    {"div", lua::wrap<l_binop<2, std::divides>>},
-    {"distance", lua::wrap<l_distance<2>>},
-    {"normalize", lua::wrap<l_unaryop<2, glm::normalize>>},
-    {"length", lua::wrap<l_scalar_op<2, glm::length>>},
-    {"tostring", lua::wrap<l_tostring<2>>},
-    {"abs", lua::wrap<l_unaryop<2, glm::abs>>},
-    {"round", lua::wrap<l_unaryop<2, glm::round>>},
-    {"inverse", lua::wrap<l_inverse<2>>},
-    {"pow", lua::wrap<l_pow<2>>},
-    {"dot", lua::wrap<l_dot<2>>},
+    VECLIB_BASE(2)
     {"angle", lua::wrap<l_vec2_angle>},
-    {"mix", lua::wrap<l_mix<2>>},
     {"rotate", lua::wrap<l_vec2_rotate>},
     {nullptr, nullptr}
 };
 
 const luaL_Reg vec3lib[] = {
-    {"add", lua::wrap<l_binop<3, std::plus>>},
-    {"sub", lua::wrap<l_binop<3, std::minus>>},
-    {"mul", lua::wrap<l_binop<3, std::multiplies>>},
-    {"div", lua::wrap<l_binop<3, std::divides>>},
-    {"distance", lua::wrap<l_distance<3>>},
-    {"normalize", lua::wrap<l_unaryop<3, glm::normalize>>},
-    {"length", lua::wrap<l_scalar_op<3, glm::length>>},
-    {"tostring", lua::wrap<l_tostring<3>>},
-    {"abs", lua::wrap<l_unaryop<3, glm::abs>>},
-    {"round", lua::wrap<l_unaryop<3, glm::round>>},
-    {"inverse", lua::wrap<l_inverse<3>>},
-    {"pow", lua::wrap<l_pow<3>>},
-    {"dot", lua::wrap<l_dot<3>>},
+    VECLIB_BASE(3)
     {"spherical_rand", lua::wrap<l_spherical_rand>},
-    {"mix", lua::wrap<l_mix<3>>},
     {nullptr, nullptr}
 };
 
 const luaL_Reg vec4lib[] = {
-    {"add", lua::wrap<l_binop<4, std::plus>>},
-    {"sub", lua::wrap<l_binop<4, std::minus>>},
-    {"mul", lua::wrap<l_binop<4, std::multiplies>>},
-    {"div", lua::wrap<l_binop<4, std::divides>>},
-    {"distance", lua::wrap<l_distance<4>>},
-    {"normalize", lua::wrap<l_unaryop<4, glm::normalize>>},
-    {"length", lua::wrap<l_scalar_op<4, glm::length>>},
-    {"tostring", lua::wrap<l_tostring<4>>},
-    {"abs", lua::wrap<l_unaryop<4, glm::abs>>},
-    {"round", lua::wrap<l_unaryop<4, glm::round>>},
-    {"inverse", lua::wrap<l_inverse<4>>},
-    {"pow", lua::wrap<l_pow<4>>},
-    {"dot", lua::wrap<l_dot<4>>},
-    {"mix", lua::wrap<l_mix<4>>},
+    VECLIB_BASE(4)
     {nullptr, nullptr}
 };
diff --git a/src/objects/Entities.cpp b/src/objects/Entities.cpp
index c2ce479c6..c2d476144 100644
--- a/src/objects/Entities.cpp
+++ b/src/objects/Entities.cpp
@@ -422,7 +422,7 @@ static void debug_render_skeleton(
 }
 
 void Entities::renderDebug(
-    LineBatch& batch, const Frustum* frustum, const DrawContext& pctx
+    LineBatch& batch, const Frustum* frustum, const DrawContext& pctx, entityid_t fpsEntity
 ) {
     {
         auto ctx = pctx.sub(&batch);
@@ -450,12 +450,15 @@ void Entities::renderDebug(
         }
     }
     {
-        auto view = registry->view<Transform, rigging::Skeleton>();
+        auto view = registry->view<EntityId, Transform, rigging::Skeleton>();
         auto ctx = pctx.sub(&batch);
         ctx.setDepthTest(false);
         ctx.setDepthMask(false);
         ctx.setLineWidth(2);
-        for (auto [entity, transform, skeleton] : view.each()) {
+        for (auto [entity, eid, transform, skeleton] : view.each()) {
+            if (eid.uid == fpsEntity) {
+                continue;
+            }
             auto config = skeleton.config;
             if (config == nullptr) {
                 continue;
diff --git a/src/objects/Entities.hpp b/src/objects/Entities.hpp
index 382790b95..8cc1b5225 100644
--- a/src/objects/Entities.hpp
+++ b/src/objects/Entities.hpp
@@ -58,7 +58,7 @@ public:
     void update(float delta);
 
     void renderDebug(
-        LineBatch& batch, const Frustum* frustum, const DrawContext& ctx
+        LineBatch& batch, const Frustum* frustum, const DrawContext& ctx, entityid_t fpsEntity
     );
     void render(
         const Assets& assets,