asset changes

implementations/Crafter.Build-Asset.cpp

@@ -29,9 +29,15 @@ namespace fs = std::filesystem;
 namespace Crafter {
     std::string CompressAsset(const fs::path& input, const fs::path& output) {
         std::string ext = input.extension().string();
+        // Case-insensitive extension match — Sponza's textures dir mixes
+        // case (.tga and .TGA both appear in the wild).
+        for (char& c : ext) c = static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
 #ifdef CRAFTER_BUILD_HAS_ASSET
         try {
-            if (ext == ".png") {
+            // stb_image (the loader behind LoadPNG) handles all of these,
+            // so a single branch covers every raster format we ship. The
+            // function is misnamed for historical reasons.
+            if (ext == ".png" || ext == ".tga" || ext == ".jpg" || ext == ".jpeg" || ext == ".bmp") {
                 auto tex = TextureAsset<Vector<std::uint8_t, 4, 4>>::LoadPNG<std::uint8_t>(input);
                 tex.SaveCompressed(output);
             } else if (ext == ".obj") {
@@ -50,6 +56,65 @@ namespace Crafter {
             "rebuild via `./bin/crafter-build` so the self-host pass picks up the "
             "Crafter.Asset dep declared in project.cpp",
             input.string());
+#endif
+    }
+
+    std::string BuildOBJBundle(
+        const fs::path& objPath,
+        const fs::path& mtlPath,
+        const fs::path& outDir,
+        std::uint16_t   albedoSize)
+    {
+#ifdef CRAFTER_BUILD_HAS_ASSET
+        const fs::path manifest = outDir / "scene.txt";
+        if (fs::exists(manifest)) return {};
+        try {
+            fs::create_directories(outDir);
+            auto materials = LoadMTL(mtlPath);
+            auto meshes    = MeshAsset<VertexNormalTangentUVPacked>::LoadOBJSplit(objPath);
+
+            std::vector<std::string> uniqueAlbedos;
+            std::unordered_map<std::string, std::uint32_t> albedoIndex;
+            for (auto& [matName, _] : meshes) {
+                auto matIt = materials.find(matName);
+                if (matIt == materials.end() || matIt->second.mapKd.empty()) continue;
+                const std::string& kd = matIt->second.mapKd;
+                if (!albedoIndex.contains(kd)) {
+                    albedoIndex.emplace(kd, static_cast<std::uint32_t>(uniqueAlbedos.size()));
+                    uniqueAlbedos.push_back(kd);
+                }
+            }
+
+            std::vector<std::int32_t> meshAlbedoIdx;
+            std::uint32_t emitted = 0;
+            for (auto& [matName, mesh] : meshes) {
+                if (mesh.vertexes.empty() || mesh.indexes.empty()) continue;
+                mesh.SaveCompressed(outDir / std::format("mesh_{}.cmesh", emitted));
+                std::int32_t a = -1;
+                if (auto it = materials.find(matName);
+                    it != materials.end() && !it->second.mapKd.empty())
+                    a = static_cast<std::int32_t>(albedoIndex.at(it->second.mapKd));
+                meshAlbedoIdx.push_back(a);
+                ++emitted;
+            }
+
+            for (std::uint32_t i = 0; i < uniqueAlbedos.size(); ++i) {
+                const fs::path texPath = mtlPath.parent_path() / uniqueAlbedos[i];
+                auto tex = TextureAsset<Vector<std::uint8_t, 4, 4>>::LoadPNG<std::uint8_t>(texPath);
+                tex.Resize(albedoSize, albedoSize);
+                tex.SaveCompressed(outDir / std::format("tex_{}.ctex", i));
+            }
+
+            std::ofstream m(manifest);
+            m << uniqueAlbedos.size() << "\n" << emitted << "\n";
+            for (std::int32_t a : meshAlbedoIdx) m << a << "\n";
+        } catch (const std::exception& e) {
+            return std::format("BuildOBJBundle: {}", e.what());
+        }
+        return {};
+#else
+        return "BuildOBJBundle: crafter-build was bootstrapped without Crafter.Asset linkage; "
+               "rebuild via crafter-build itself to pick up the Crafter.Asset dep";
 #endif
     }
 }

implementations/Crafter.Build-Clang.cpp

@@ -17,6 +17,15 @@ License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
 */
 
+module;
+#if defined(CRAFTER_BUILD_CONFIGURATION_TARGET_x86_64_pc_windows_msvc) || defined(CRAFTER_BUILD_CONFIGURATION_TARGET_x86_64_w64_mingw32)
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#else
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <unistd.h>
+#endif
 export module Crafter.Build:Clang_impl;
 import std;
 import :Clang;
@@ -304,7 +313,12 @@ BuildResult Crafter::Build(Configuration& config, std::unordered_map<fs::path, s
     // a single thread to match the cfg.files pattern.
     auto compressedName = [](const fs::path& src) -> std::optional<fs::path> {
         std::string ext = src.extension().string();
-        if (ext == ".png") return fs::path(src.filename()).replace_extension(".ctex");
+        for (char& c : ext) c = static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
+        // stb_image (used by CompressAsset → TextureAsset::LoadPNG) handles
+        // png/tga/jpg/bmp; all map to .ctex.
+        if (ext == ".png" || ext == ".tga" || ext == ".jpg" || ext == ".jpeg" || ext == ".bmp") {
+            return fs::path(src.filename()).replace_extension(".ctex");
+        }
         if (ext == ".obj") return fs::path(src.filename()).replace_extension(".cmesh");
         return std::nullopt;
     };
@@ -341,7 +355,7 @@ BuildResult Crafter::Build(Configuration& config, std::unordered_map<fs::path, s
             std::optional<fs::path> outName = compressedName(asset);
             if (!outName) {
                 buildCancelled.store(true);
-                buildError = std::format("{}: unsupported asset extension (expected .png or .obj, or a directory)", asset.string());
+                buildError = std::format("{}: unsupported asset extension (expected .png/.tga/.jpg/.bmp/.obj, or a directory)", asset.string());
                 break;
             }
             submitCompress(asset, *outName);
@@ -752,10 +766,15 @@ BuildResult Crafter::Build(Configuration& config, std::unordered_map<fs::path, s
                         continue;
                     }
                     std::string ext = asset.extension().string();
+                    for (char& c : ext) c = static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
                     fs::path srcName = asset.filename();
-                    if (ext == ".png") srcName.replace_extension(".ctex");
-                    else if (ext == ".obj") srcName.replace_extension(".cmesh");
-                    else continue;
+                    if (ext == ".png" || ext == ".tga" || ext == ".jpg" || ext == ".jpeg" || ext == ".bmp") {
+                        srcName.replace_extension(".ctex");
+                    } else if (ext == ".obj") {
+                        srcName.replace_extension(".cmesh");
+                    } else {
+                        continue;
+                    }
                     fs::path src = depBinDir / srcName;
                     if (!fs::exists(src)) continue;
                     copyTree(src, outputDir / srcName);
@@ -1080,7 +1099,22 @@ void Crafter::EnableWasiBrowserRuntime(Configuration& cfg) {
     // runtime.js into an in-memory VFS so the wasm's std::ifstream et al.
     // can actually read them (the wasi-runtime in this repo otherwise
     // stubs every fd syscall to zero). The manifest lists basenames only;
-    // each file lives next to the .wasm in the bin dir.
+    // each file lives next to the .wasm in the bin dir. wasi-runtime
+    // reduces every path_open path to its basename, so subdir layouts
+    // collapse — that's fine for our flat-bin convention.
+    auto compressedBasename = [](const fs::path& src) -> std::optional<std::string> {
+        std::string ext = src.extension().string();
+        for (char& c : ext) c = static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
+        fs::path out = src.filename();
+        if (ext == ".png" || ext == ".tga" || ext == ".jpg" || ext == ".jpeg" || ext == ".bmp") {
+            out.replace_extension(".ctex");
+        } else if (ext == ".obj") {
+            out.replace_extension(".cmesh");
+        } else {
+            return std::nullopt;
+        }
+        return out.string();
+    };
     std::vector<std::string> assetFiles;
     seen.clear();
     std::function<void(Configuration*)> walkAssets = [&](Configuration* c) {
@@ -1095,6 +1129,31 @@ void Crafter::EnableWasiBrowserRuntime(Configuration& cfg) {
                 assetFiles.push_back(std::move(name));
             }
         }
+        // cfg.assets — emit the *compressed* output basename. Directory
+        // entries get the same compressed-basename treatment per file;
+        // unrecognized extensions are treated as passthrough (kept under
+        // their original name, matching the build-side passthrough copy).
+        for (const fs::path& a : c->assets) {
+            if (fs::is_directory(a)) {
+                std::error_code ec;
+                for (const auto& entry : fs::recursive_directory_iterator(a, ec)) {
+                    if (ec) break;
+                    if (!entry.is_regular_file()) continue;
+                    std::string name = compressedBasename(entry.path())
+                        .value_or(entry.path().filename().string());
+                    if (name.empty()) continue;
+                    if (std::find(assetFiles.begin(), assetFiles.end(), name) == assetFiles.end()) {
+                        assetFiles.push_back(std::move(name));
+                    }
+                }
+            } else {
+                std::optional<std::string> name = compressedBasename(a);
+                if (!name) continue;
+                if (std::find(assetFiles.begin(), assetFiles.end(), *name) == assetFiles.end()) {
+                    assetFiles.push_back(std::move(*name));
+                }
+            }
+        }
         for (Configuration* dep : c->dependencies) walkAssets(dep);
     };
     walkAssets(&cfg);
@@ -1339,10 +1398,35 @@ int Crafter::Run(int argc, char** argv) {
                     return std::system(probe.c_str()) == 0;
                 };
                 if (browserBuild) {
-                    // Try installed HTTP servers in priority order: lightweight
-                    // / dependency-free first, ad-hoc ones last. Foreground
-                    // (Ctrl-C to stop); we exec, not fork.
-                    const int port = 8080;
+                    // Probe-bind to find a free port starting at 8080 — if the
+                    // user has another dev server running we shift up rather
+                    // than letting caddy/python exit with EADDRINUSE.
+                    auto findFreePort = [](int basePort, int span) -> int {
+#if defined(CRAFTER_BUILD_CONFIGURATION_TARGET_x86_64_pc_windows_msvc) || defined(CRAFTER_BUILD_CONFIGURATION_TARGET_x86_64_w64_mingw32)
+                        static const bool wsaInit = []{ WSADATA d; return WSAStartup(MAKEWORD(2, 2), &d) == 0; }();
+                        if (!wsaInit) return basePort;
+                        using sock_t = SOCKET;
+                        const sock_t invalid = INVALID_SOCKET;
+                        auto closesock = [](sock_t s){ closesocket(s); };
+#else
+                        using sock_t = int;
+                        const sock_t invalid = -1;
+                        auto closesock = [](sock_t s){ ::close(s); };
+#endif
+                        for (int p = basePort; p < basePort + span; ++p) {
+                            sock_t s = ::socket(AF_INET, SOCK_STREAM, 0);
+                            if (s == invalid) return basePort;
+                            sockaddr_in addr{};
+                            addr.sin_family = AF_INET;
+                            addr.sin_addr.s_addr = htonl(INADDR_ANY);
+                            addr.sin_port = htons(static_cast<uint16_t>(p));
+                            bool ok = ::bind(s, reinterpret_cast<sockaddr*>(&addr), sizeof(addr)) == 0;
+                            closesock(s);
+                            if (ok) return p;
+                        }
+                        return basePort;
+                    };
+                    const int port = findFreePort(8080, 16);
                     std::string cmd;
                     std::string_view picked;
                     if (have("caddy")) {

implementations/Crafter.Build-External.cpp

@@ -396,6 +396,34 @@ Configuration* Crafter::GitProject(const GitProjectSpec& spec) {
     return ptr;
 }
 
+fs::path Crafter::GitFetch(const GitSource& source) {
+    std::string name = DeriveName(source);
+    if (name.empty()) {
+        throw std::runtime_error(std::format(
+            "GitFetch: could not derive name from URL '{}'", source.url));
+    }
+    fs::path externalRoot = GetCacheDir() / "external";
+    std::error_code ec;
+    fs::create_directories(externalRoot, ec);
+    if (ec) {
+        throw std::runtime_error(std::format(
+            "GitFetch: failed to create {}: {}", externalRoot.string(), ec.message()));
+    }
+    std::string keyMaterial = std::format("git|{}|{}|{}",
+        source.url, source.branch, source.commit);
+    std::size_t key = std::hash<std::string>{}(keyMaterial);
+    fs::path cloneDir = externalRoot / std::format("{}-{:016x}", name, key);
+
+    {
+        bool exists = fs::exists(cloneDir);
+        Progress::Task task(std::format("{} {}", exists ? "Updating" : "Cloning", name));
+        if (std::string err = FetchGit(source, cloneDir); !err.empty()) {
+            throw std::runtime_error(std::format("GitFetch({}): {}", source.url, err));
+        }
+    }
+    return cloneDir;
+}
+
 Configuration* Crafter::LocalProject(const LocalProjectSpec& spec) {
     fs::path projectPath = fs::absolute(spec.projectFile).lexically_normal();
     if (!fs::exists(projectPath)) {

interfaces/Crafter.Build-Asset.cppm

@@ -36,4 +36,26 @@ namespace Crafter {
     // support requires a self-host rebuild via crafter-build itself,
     // which resolves the Crafter.Asset dep through project.cpp.
     export CRAFTER_API std::string CompressAsset(const fs::path& input, const fs::path& output);
+
+    // Split a single .obj + .mtl file by material group into per-material
+    // .cmesh files, per-unique-albedo .ctex files, and a scene.txt manifest
+    // under outDir. All albedo textures are resized to albedoSize × albedoSize
+    // before compression (required for a texture_2d_array where all layers
+    // must have identical dimensions).
+    //
+    // scene.txt format (read by the Sponza example at runtime):
+    //   <albedoCount>
+    //   <meshCount>
+    //   <albedoIdx_for_mesh_0>   (-1 = no albedo)
+    //   ...
+    //
+    // Idempotent: returns "" immediately if outDir/scene.txt already exists,
+    // so repeated builds skip the expensive split+resize step.
+    // Returns "" on success, an error string on failure.
+    export CRAFTER_API std::string BuildOBJBundle(
+        const fs::path& objPath,
+        const fs::path& mtlPath,
+        const fs::path& outDir,
+        std::uint16_t   albedoSize = 1024
+    );
 }

interfaces/Crafter.Build-External.cppm

@@ -97,4 +97,14 @@ export namespace Crafter {
     // recursively LoadProject's it. Returns a stable Configuration* owned
     // by the same internal cache as GitProject.
     CRAFTER_API Configuration* LocalProject(const LocalProjectSpec& spec);
+
+    // Clone (or update) the given git source into the shared external
+    // cache and return the path to the cloned working tree. Intended for
+    // example projects that need large asset bundles which shouldn't
+    // live in the parent repo — push the returned path (or specific
+    // files inside it) into `cfg.assets`. Reuses the same cache root as
+    // ExternalDependency / GitProject. Caching key = url + branch + commit;
+    // identical calls reuse the existing clone. Pin `source.commit` to a
+    // SHA for reproducible, offline-after-first-fetch builds.
+    CRAFTER_API fs::path GitFetch(const GitSource& source);
 }

project.cpp

@@ -104,6 +104,10 @@ extern "C" Configuration CrafterBuildProject(std::span<const std::string_view> a
         cfg.linkFlags.push_back("-Wl,--export-dynamic");
         cfg.linkFlags.push_back("-ldl");
     }
+    if (cfg.target == "x86_64-w64-mingw32" || cfg.target == "x86_64-pc-windows-msvc") {
+        // winsock for the -r wasm port probe (bind/WSAStartup).
+        crafterBuildLib->linkFlags.push_back("-lws2_32");
+    }
 
     return cfg;
 }