EnderTheCoder
70d4beca4f
- ra3.webgl: a Web peer of Vulkan/Direct3D (SDL3 canvas + GLES3/WebGL2), with 2D blit and the GPU terrain raymarch; GLSL ES shaders; null fallback off Emscripten. backend::webgl + default_backend() (webgl under Emscripten). - Emscripten toolchain + Dockerfile.wasm + scripts/build-wasm.sh; import std, global -fexceptions, and Asyncify so the blocking frame loop yields to the browser (display::sleep_frame calls emscripten_sleep). - apps/web/shell.html + apps/web/serve.py (Range-capable dev server). - Assets: browsers forbid synchronous on-demand reads on the main thread (and FS.createLazyFile / the WasmFS fetch backend are worker-only; SDL3's Emscripten backend is main-thread DOM only, so the engine cannot run in a worker). The wasm build therefore preloads a compact per-map set via OPENRA3_WEB_ASSETS. - New openra3 textures --map ID lists the loose terrain TGAs a map resolves to (terrain::resolve_texture_files, shared with load_textures_from_dir). - Fixes: webgl heightmap used GL_R16 = 0x8229 (that is R8) -> upload rejected, terrain flattened to water; now 0x822A. Logger uses a stdout console sink on the web (stderr maps to console.error); a GL error check logs bad uploads. - CI: wasm image + build jobs.
47 lines
1.7 KiB
Docker
47 lines
1.7 KiB
Docker
# syntax=docker/dockerfile:1
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# WebAssembly build environment (Emscripten), producing openra3.html/.js/.wasm.
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#
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# The emsdk image ships CMake 3.28, whose experimental `import std` support is
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# too old for the project, so an upstream CMake is layered on top.
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FROM emscripten/emsdk:6.0.10 AS dev
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ENV DEBIAN_FRONTEND=noninteractive
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ARG APT_MIRROR=""
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RUN if [ -n "$APT_MIRROR" ]; then \
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sed -i -e "s|http://archive.ubuntu.com/ubuntu|${APT_MIRROR}|g" \
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-e "s|http://security.ubuntu.com/ubuntu|${APT_MIRROR}|g" \
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-e "s|http://ports.ubuntu.com/ubuntu-ports|${APT_MIRROR}|g" \
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/etc/apt/sources.list /etc/apt/sources.list.d/*.sources 2>/dev/null || true; \
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fi
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RUN --mount=type=cache,target=/var/lib/apt,sharing=locked \
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--mount=type=cache,target=/var/cache/apt,sharing=locked \
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for attempt in 1 2 3 4 5; do \
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apt-get -o Acquire::Retries=5 update && break; \
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echo "apt-get update failed (attempt $attempt), retrying"; \
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sleep 5; \
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done \
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&& apt-get -o Acquire::Retries=5 install -y --no-install-recommends \
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ca-certificates \
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curl \
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ninja-build \
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&& rm -rf /var/lib/apt/lists/*
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# Upstream CMake, because the emsdk image's 3.28 cannot build the project.
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ARG CMAKE_VERSION=4.2.3
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RUN mkdir -p /opt/cmake \
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&& curl -fL "https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-linux-x86_64.tar.gz" \
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| tar -xz -C /opt/cmake --strip-components=1
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ENV PATH="/opt/cmake/bin:${PATH}"
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WORKDIR /work
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COPY . .
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RUN cmake -S . -B build/wasm -G Ninja \
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-DCMAKE_TOOLCHAIN_FILE=cmake/toolchains/emscripten-wasm.cmake \
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-DCMAKE_BUILD_TYPE=Release \
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&& cmake --build build/wasm -j
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