fix camera movement

.clang-format

@@ -20,6 +20,7 @@ IndentWidth: 2
 NamespaceIndentation: All
 SpaceBeforeCpp11BracedList: true
 SpacesBeforeTrailingComments: 1
+Standard: Latest
 
 IncludeBlocks: Regroup
 IncludeCategories:

.clang-tidy

@@ -1,4 +1,3 @@
-# noinspection SpellCheckingInspection
 Checks: >
     *,
     -ctad-maybe-unsupported,
@@ -8,6 +7,7 @@ Checks: >
     -bugprone-implicit-widening-of-multiplication-result,
     -cert-env33-c,
     -concurrency-mt-unsafe,
+    -cppcoreguidelines-avoid-const-or-ref-data-members,
     -cppcoreguidelines-avoid-magic-numbers,
     -cppcoreguidelines-owning-memory,
     -cppcoreguidelines-pro-type-member-init,

.clangd

@@ -1,4 +0,0 @@
-Diagnostics:
-    Suppress: >
-      -Wmissing-template-arg-list-after-template-kw,
-      -Wctad-maybe-unsupported

.envrc

@@ -1,2 +1 @@
-export NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1
+use_flake
-use_flake . --impure

.gitignore

@@ -2,3 +2,4 @@
 .direnv/
 .vscode/
 build/
+imgui.ini

_sources/generated.nix

@@ -1,6 +1,10 @@
 # This file was generated by nvfetcher, please do not modify it manually.
-{ fetchgit, fetchurl, fetchFromGitHub, dockerTools }:
 {
+  fetchgit,
+  fetchurl,
+  fetchFromGitHub,
+  dockerTools,
+}: {
   fmt = {
     pname = "fmt";
     version = "11.0.2";

flake.lock

@@ -1,12 +1,63 @@
 {
   "nodes": {
+    "flake-compat": {
+      "locked": {
+        "lastModified": 1688025799,
+        "narHash": "sha256-ktpB4dRtnksm9F5WawoIkEneh1nrEvuxb5lJFt1iOyw=",
+        "owner": "nix-community",
+        "repo": "flake-compat",
+        "rev": "8bf105319d44f6b9f0d764efa4fdef9f1cc9ba1c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "nixos-asahi": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      },
+      "locked": {
+        "lastModified": 1729779640,
+        "narHash": "sha256-M9t4Ta9d76aVqd1mkLBl8zFSWYc8pv6AZTy1SU5bVp0=",
+        "owner": "zzywysm",
+        "repo": "nixos-asahi",
+        "rev": "5f8823f3543cbf9566d5af49b3a3c18539681eac",
+        "type": "github"
+      },
+      "original": {
+        "owner": "zzywysm",
+        "repo": "nixos-asahi",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1727065772,
+        "lastModified": 1725103162,
-        "narHash": "sha256-U9baiEXL2YsS67QKlBAPIUq+OB+eUPKv8n1vGNdhiec=",
+        "narHash": "sha256-Ym04C5+qovuQDYL/rKWSR+WESseQBbNAe5DsXNx5trY=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "12228ff1752d7b7624a54e9c1af4b222b3c1073b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1730853263,
+        "narHash": "sha256-Cnp2zjzaA4bYUOhM/xo9GxhgOgTHn+qNbSGu4su8RaQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "989dc4cbf6a95f2e5fefc8cd61d2198a8fb6834a",
+        "rev": "5d4d64e923ce570996c089d768710f61bde0b9d3",
         "type": "github"
       },
       "original": {
@@ -15,13 +66,13 @@
         "type": "github"
       }
     },
-    "nixpkgs_2": {
+    "nixpkgs_3": {
       "locked": {
-        "lastModified": 1726481836,
+        "lastModified": 1726871744,
-        "narHash": "sha256-MWTBH4dd5zIz2iatDb8IkqSjIeFum9jAqkFxgHLdzO4=",
+        "narHash": "sha256-V5LpfdHyQkUF7RfOaDPrZDP+oqz88lTJrMT1+stXNwo=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "20f9370d5f588fb8c72e844c54511cab054b5f40",
+        "rev": "a1d92660c6b3b7c26fb883500a80ea9d33321be2",
         "type": "github"
       },
       "original": {
@@ -33,11 +84,28 @@
     },
     "root": {
       "inputs": {
-        "nixpkgs": "nixpkgs",
+        "nixos-asahi": "nixos-asahi",
+        "nixpkgs": "nixpkgs_2",
         "treefmt-nix": "treefmt-nix",
         "utils": "utils"
       }
     },
+    "rust-overlay": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1686795910,
+        "narHash": "sha256-jDa40qRZ0GRQtP9EMZdf+uCbvzuLnJglTUI2JoHfWDc=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "5c2b97c0a9bc5217fc3dfb1555aae0fb756d99f9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
     "systems": {
       "locked": {
         "lastModified": 1681028828,
@@ -55,14 +123,14 @@
     },
     "treefmt-nix": {
       "inputs": {
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": "nixpkgs_3"
       },
       "locked": {
-        "lastModified": 1726734507,
+        "lastModified": 1730321837,
-        "narHash": "sha256-VUH5O5AcOSxb0uL/m34dDkxFKP6WLQ6y4I1B4+N3L2w=",
+        "narHash": "sha256-vK+a09qq19QNu2MlLcvN4qcRctJbqWkX7ahgPZ/+maI=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "ee41a466c2255a3abe6bc50fc6be927cdee57a9f",
+        "rev": "746901bb8dba96d154b66492a29f5db0693dbfcc",
         "type": "github"
       },
       "original": {

flake.nix

@@ -2,6 +2,7 @@
   description = "C/C++ environment";
 
   inputs = {
+    nixos-asahi.url = "github:zzywysm/nixos-asahi";
     nixpkgs.url = "github:NixOS/nixpkgs";
     treefmt-nix.url = "github:numtide/treefmt-nix";
     utils.url = "github:numtide/flake-utils";
@@ -10,13 +11,20 @@
   outputs = {
     self,
     nixpkgs,
+    nixos-asahi,
     treefmt-nix,
     utils,
     ...
   }:
     utils.lib.eachDefaultSystem (
       system: let
-        pkgs = import nixpkgs {inherit system;};
+        pkgs = import nixpkgs {
+          inherit system;
+          config = {
+            allowUnfree = true;
+            allowUnsupportedSystem = true;
+          };
+        };
 
         stdenv =
           if pkgs.hostPlatform.isLinux
@@ -34,14 +42,21 @@
 
         fmt = mkPkg "fmt";
 
+        imgui = pkgs.imgui.override {
+          IMGUI_BUILD_GLFW_BINDING = true;
+          IMGUI_BUILD_VULKAN_BINDING = true;
+        };
+
         deps = with pkgs; [
           fmt
           glfw
           glm
+          imgui
+          shaderc.dev
+          shaderc.lib
           vulkan-extension-layer
           vulkan-memory-allocator
           vulkan-utility-libraries
-          vulkan-headers
           vulkan-loader
           vulkan-tools
         ];
@@ -82,7 +97,6 @@
             projectRootFile = "flake.nix";
             programs = {
               alejandra.enable = true;
-              deadnix.enable = true;
 
               clang-format = {
                 enable = true;
@@ -92,15 +106,17 @@
           };
 
           devShell = mkShell.override {inherit stdenv;} {
-            packages =
+            buildInputs =
               [
                 alejandra
                 bear
+                cmake
                 (llvmPackages_18.clang-tools.override {enableLibcxx = true;})
                 lldb
                 meson
+                nil
                 ninja
-                nvfetcher
+                #nvfetcher
                 pkg-config
                 unzip
 
@@ -113,6 +129,20 @@
 
             VULKAN_SDK = "${vulkan-headers}";
             VK_LAYER_PATH = "${vulkan-validation-layers}/share/vulkan/explicit_layer.d";
+            VK_ICD_FILENAMES =
+              if stdenv.isDarwin
+              then "${darwin.moltenvk}/share/vulkan/icd.d/MoltenVK_icd.json"
+              else let
+                vulkanDir =
+                  if stdenv.hostPlatform.isx86_64
+                  then "${mesa.drivers}/share/vulkan/icd.d"
+                  else "${nixos-asahi.packages.aarch64-linux.mesa-asahi-edge.drivers}/share/vulkan/icd.d";
+                vulkanFiles = builtins.filter (file: builtins.match ".*\\.json$" file != null) (builtins.attrNames (builtins.readDir vulkanDir));
+                vulkanPaths = lib.concatStringsSep ":" (map (file: "${vulkanDir}/${file}") vulkanFiles);
+              in
+                if stdenv.hostPlatform.isx86_64
+                then "${linuxPackages_latest.nvidia_x11_beta}/share/vulkan/icd.d/nvidia_icd.x86_64.json:${vulkanPaths}"
+                else vulkanPaths;
 
             shellHook = ''
               export PATH="${llvmPackages_18.clang-tools.override {enableLibcxx = true;}}/bin:$PATH"

meson.build

@@ -2,7 +2,7 @@ project(
   'graphics-test',
   'cpp',
   version: '0.1.0',
-  default_options: ['cpp_std=c++20', 'warning_level=everything', 'buildtype=debugoptimized'],
+  default_options: ['cpp_std=c++26', 'warning_level=everything', 'buildtype=debugoptimized'],
 )
 
 cpp = meson.get_compiler('cpp')
@@ -12,37 +12,32 @@ common_cpp_args = [
   '-Wno-c++20-extensions',
   '-Wno-c++98-compat',
   '-Wno-c++98-compat-pedantic',
-  '-Wno-disabled-macro-expansion',
-  '-Wno-missing-prototypes',
-  '-Wno-padded',
   '-Wno-pre-c++20-compat-pedantic',
-  '-Wno-switch-default',
+  '-Wno-padded',
-  '-Wno-unsafe-buffer-usage',
+  '-mavx2'
-  '-Wunused-function',
-  '-fvisibility=hidden',
 ]
 
 add_project_arguments(cpp.get_supported_arguments(common_cpp_args), language: 'cpp')
 
-source_file_names = [
-  'src/main.cpp',
-]
-
-sources = []
-
-foreach file : source_file_names
-  sources += files(file)
-endforeach
-
 deps = [
-  dependency('fmt', static: true),
+  dependency('fmt', include_type: 'system'),
-  dependency('glfw3'),
+  dependency('glfw3', include_type: 'system'),
-  dependency('glm'),
+  dependency('glm', include_type: 'system'),
-  dependency('vulkan'),
+  dependency('vulkan', include_type: 'system'),
+  dependency('shaderc', include_type: 'system'),
 ]
 
+imgui_dep = dependency('imgui', required: false, include_type: 'system')
+
+if not imgui_dep.found()
+  imgui_dep = cpp.find_library('imgui', required: true)
+endif
+
+deps += imgui_dep
+
 executable(
   'graphics-test',
-  sources,
+  sources: files('src/main.cpp'),
+  include_directories: include_directories('include', is_system: true),
   dependencies: deps,
 )

src/util/shaders.hpp

@@ -0,0 +1,166 @@
+#pragma once
+
+#include <filesystem>
+#include <fmt/format.h>
+#include <fstream>
+#include <shaderc/shaderc.hpp>
+#include <string>
+#include <vector>
+
+#include "types.hpp"
+
+class ShaderCompiler {
+ public:
+  ShaderCompiler() = default;
+
+  /**
+   * @brief Compiles or loads a cached SPIR-V shader from a file.
+   *
+   * @param shaderSource The source code of the shader.
+   * @param kind The type of shader being compiled (vertex, fragment, etc.).
+   * @param shaderName The name used for caching the compiled shader.
+   * @return std::vector<u32> A vector containing the compiled SPIR-V code.
+   * @throws std::runtime_error if shader compilation fails.
+   *
+   * This function attempts to load a shader from the cache. If the shader
+   * is not found in the cache, it compiles the shader from the source code
+   * and saves the result to the cache for future use.
+   */
+  static fn getCompiledShader(
+    const char*                shaderSource,
+    const shaderc_shader_kind& kind,
+    const string&              shaderName
+  ) -> std::vector<u32> {
+    using namespace std;
+
+    const filesystem::path cacheFile = getCacheFilePath(shaderName);
+
+    // Try loading from cache first
+    vector<u32> spirvCode = loadCachedShader(cacheFile);
+
+    if (!spirvCode.empty()) {
+      fmt::println("Loaded shader from cache: {}", cacheFile.string());
+      return spirvCode;
+    }
+
+    // Cache miss, compile the shader
+    spirvCode = compileShader(shaderSource, kind);
+
+    if (spirvCode.empty())
+      throw runtime_error("Shader compilation failed for: " + shaderName);
+
+    // Cache the compiled SPIR-V binary
+    saveCompiledShader(spirvCode, cacheFile.string());
+    return spirvCode;
+  }
+
+ private:
+  /**
+   * @brief Generates the cache file path based on the operating system.
+   *
+   * @param shaderName The name used for the shader file.
+   * @return string The full path to the cache file.
+   *
+   * This function determines the appropriate directory for caching shaders
+   * based on the operating system and returns the full path for the specified shader name.
+   */
+  static fn getCacheFilePath(const string& shaderName) -> std::filesystem::path {
+    using namespace std::filesystem;
+
+#ifdef _WIN32
+    path cacheDir = path(getenv("LOCALAPPDATA")) / "VulkanApp" / "Shaders";
+#elif defined(__APPLE__)
+    path cacheDir = path(getenv("HOME")) / "Library" / "Application Support" / "VulkanApp" / "Shaders";
+#else // Assume Linux or other UNIX-like systems
+    path cacheDir = path(getenv("HOME")) / ".local" / "share" / "VulkanApp" / "Shaders";
+#endif
+
+    if (!exists(cacheDir))
+      create_directories(cacheDir); // Create the directory if it doesn't exist
+
+    return cacheDir / (shaderName + ".spv");
+  }
+
+  /**
+   * @brief Compiles GLSL code to SPIR-V.
+   *
+   * @param source The GLSL source code to compile.
+   * @param kind The type of shader being compiled.
+   * @return std::vector<u32> A vector containing the compiled SPIR-V code.
+   *
+   * This function uses the shaderc library to compile GLSL source code into
+   * SPIR-V binary format. If the compilation fails, an empty vector is returned.
+   */
+  static fn compileShader(const char* source, const shaderc_shader_kind& kind) -> std::vector<u32> {
+    using namespace shaderc;
+
+    Compiler       compiler;
+    CompileOptions options;
+
+    SpvCompilationResult result = compiler.CompileGlslToSpv(source, kind, "shader.glsl", "main", options);
+
+    if (result.GetCompilationStatus() != shaderc_compilation_status_success) {
+      fmt::println(stderr, "Shader compilation failed: {}", result.GetErrorMessage());
+      return {};
+    }
+
+    return { result.cbegin(), result.cend() };
+  }
+
+  /**
+   * @brief Loads compiled SPIR-V shader code from a cache file.
+   *
+   * @param cacheFile The path to the cached SPIR-V file.
+   * @return std::vector<u32> A vector containing the loaded SPIR-V code.
+   * @throws std::runtime_error if the file cannot be read.
+   *
+   * This function checks if the specified cache file exists and reads its
+   * contents into a vector. If the file cannot be opened, an exception is thrown.
+   */
+  static fn loadCachedShader(const std::filesystem::path& cacheFile) -> std::vector<u32> {
+    using namespace std;
+
+    if (!filesystem::exists(cacheFile))
+      return {}; // No cached file
+
+    ifstream file(cacheFile, ios::binary);
+
+    // Check if the file was successfully opened
+    if (!file)
+      throw runtime_error("Failed to open cached shader file: " + cacheFile.string());
+
+    usize       fileSize = filesystem::file_size(cacheFile);
+    vector<u32> spirvCode(fileSize / sizeof(u32));
+
+    // Read entire file content into the vector
+    if (!file.read(bit_cast<char*>(spirvCode.data()), static_cast<streamsize>(fileSize)))
+      throw runtime_error("Failed to read cached shader file: " + cacheFile.string());
+
+    return spirvCode;
+  }
+
+  /**
+   * @brief Saves compiled SPIR-V binary to a cache file.
+   *
+   * @param spirvCode The SPIR-V code to save.
+   * @param cacheFile The path to the file where the SPIR-V code will be saved.
+   * @throws std::runtime_error if the file cannot be written.
+   *
+   * This function writes the compiled SPIR-V binary to the specified file.
+   * If the file cannot be opened or written, an exception is thrown.
+   */
+  static fn saveCompiledShader(const std::vector<u32>& spirvCode, const string& cacheFile) -> void {
+    using namespace std;
+
+    ofstream file(cacheFile, ios::binary);
+
+    // Check if the file was successfully opened
+    if (!file)
+      throw runtime_error("Failed to open file for saving shader: " + cacheFile);
+
+    if (!file.write(
+          bit_cast<const char*>(spirvCode.data()), static_cast<streamsize>(spirvCode.size() * sizeof(u32))
+        ))
+      throw runtime_error("Failed to save shader to cache: " + cacheFile);
+  }
+};

src/util/unique_image.hpp

@@ -0,0 +1,121 @@
+#include <filesystem>
+
+#define STB_IMAGE_IMPLEMENTATION
+#include <stb_image.h>
+
+#include "types.hpp"
+
+namespace stb {
+  /**
+   * @brief A class that handles loading and managing image data.
+   *
+   * This class uses the stb_image library to load images from the filesystem
+   * and provides access to the image data, dimensions, and channel count.
+   */
+  class UniqueImage {
+   public:
+    /**
+     * @brief Constructs a UniqueImage object and loads an image from the specified path.
+     *
+     * @param path The filesystem path to the image file to load.
+     */
+    UniqueImage(const std::filesystem::path& path) { load(path.string().c_str()); }
+
+    // Deleted copy constructor to prevent copying.
+    UniqueImage(const UniqueImage&) = delete;
+
+    // Deleted copy assignment operator to prevent copying.
+    fn operator=(const UniqueImage&)->UniqueImage& = delete;
+
+    /**
+     * @brief Move constructor for UniqueImage.
+     *
+     * @param other The UniqueImage object from which to move resources.
+     *
+     * Transfers ownership of resources from another UniqueImage object.
+     */
+    UniqueImage(UniqueImage&& other) noexcept
+      : mData(other.mData), mWidth(other.mWidth), mHeight(other.mHeight), mChannels(other.mChannels) {
+      other.mData = nullptr;
+    }
+
+    /**
+     * @brief Move assignment operator for UniqueImage.
+     *
+     * @param other The UniqueImage object from which to move resources.
+     * @return Reference to this object.
+     *
+     * Transfers ownership of resources from another UniqueImage object.
+     */
+    fn operator=(UniqueImage&& other) noexcept -> UniqueImage& {
+      if (this != &other) {
+        if (mData)
+          stbi_image_free(mData);
+
+        mData       = other.mData;
+        mWidth      = other.mWidth;
+        mHeight     = other.mHeight;
+        mChannels   = other.mChannels;
+        other.mData = nullptr;
+      }
+      return *this;
+    }
+
+    /**
+     * @brief Destructor for UniqueImage.
+     *
+     * Frees the image data if it is allocated.
+     */
+    ~UniqueImage() {
+      if (mData)
+        stbi_image_free(mData);
+    }
+
+    /**
+     * @brief Retrieves the image data.
+     *
+     * @return Pointer to the image data in memory.
+     */
+    [[nodiscard]] fn getData() const -> u8* { return mData; }
+
+    /**
+     * @brief Retrieves the width of the image.
+     *
+     * @return The width of the image in pixels.
+     */
+    [[nodiscard]] fn getWidth() const -> i32 { return mWidth; }
+
+    /**
+     * @brief Retrieves the height of the image.
+     *
+     * @return The height of the image in pixels.
+     */
+    [[nodiscard]] fn getHeight() const -> i32 { return mHeight; }
+
+    /**
+     * @brief Retrieves the number of channels in the image.
+     *
+     * @return The number of channels in the image (e.g., 3 for RGB, 4 for RGBA).
+     */
+    [[nodiscard]] fn getChannels() const -> i32 { return mChannels; }
+
+   private:
+    u8* mData     = nullptr; ///< Pointer to the image data.
+    i32 mWidth    = 0;       ///< Width of the image in pixels.
+    i32 mHeight   = 0;       ///< Height of the image in pixels.
+    i32 mChannels = 0;       ///< Number of channels in the image.
+
+    /**
+     * @brief Loads an image from a file.
+     *
+     * @param filename The name of the file from which to load the image.
+     * @throws std::runtime_error If the image fails to load.
+     */
+    fn load(const char* filename) -> void {
+      mData = stbi_load(filename, &mWidth, &mHeight, &mChannels, STBI_rgb_alpha);
+
+      if (!mData)
+        throw std::runtime_error("Failed to load image: " + string(stbi_failure_reason()));
+    }
+  };
+}

src/util/vertex.hpp

@@ -0,0 +1,52 @@
+#define GLM_FORCE_DEPTH_ZERO_TO_ONE
+#define GLM_ENABLE_EXPERIMENTAL
+#include <glm/glm.hpp>
+#include <glm/gtx/hash.hpp>
+
+#define VULKAN_HPP_NO_CONSTRUCTORS
+#include <vulkan/vulkan.hpp>
+
+#include "types.hpp"
+
+// Vertex data for the model
+struct Vertex {
+  // Position of the vertex
+  glm::vec3 pos;
+  // Color of the vertex (in RGB)
+  glm::vec3 color;
+  // Texture coordinates of the vertex
+  glm::vec2 tex_coord;
+
+  // Returns the binding description for the vertex
+  static fn getBindingDescription() -> vk::VertexInputBindingDescription {
+    return { .binding = 0, .stride = sizeof(Vertex), .inputRate = vk::VertexInputRate::eVertex };
+  }
+
+  // Returns the attribute descriptions for the vertex
+  static fn getAttributeDescriptions() -> std::array<vk::VertexInputAttributeDescription, 3> {
+    return {
+      // Position attribute
+      vk::VertexInputAttributeDescription { 0, 0, vk::Format::eR32G32B32Sfloat, offsetof(Vertex,       pos) },
+      // Color attribute
+      vk::VertexInputAttributeDescription { 1, 0, vk::Format::eR32G32B32Sfloat, offsetof(Vertex,     color) },
+      // Texture coordinate attribute
+      vk::VertexInputAttributeDescription { 2, 0,    vk::Format::eR32G32Sfloat, offsetof(Vertex, tex_coord) }
+    };
+  }
+
+  // Overload the equality operator for the vertex
+  fn operator==(const Vertex& other) const->bool {
+    return pos == other.pos && color == other.color && tex_coord == other.tex_coord;
+  }
+};
+
+// Hash function for the vertex
+namespace std {
+  template <>
+  struct hash<Vertex> {
+    fn operator()(Vertex const& vertex) const->size_t {
+      return ((hash<glm::vec3>()(vertex.pos) ^ (hash<glm::vec3>()(vertex.color) << 1)) >> 1) ^
+             (hash<glm::vec2>()(vertex.tex_coord) << 1);
+    }
+  };
+}