flathackandClaude Opus 5.5
3fb09b1458
The server takes at most a few hundred MB a push: this comes in parts. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
92 lines
4.9 KiB
Markdown
92 lines
4.9 KiB
Markdown
# SOL HD textures
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The HD pack replaces the diffuse textures of all eight planets and Earth's Moon,
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plus Sol's skybox. Each body has six independent 4096 × 4096 BC1 faces with
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13 mip levels. The sky has six 4096 × 4096 BGRA8 faces with 13 mip levels.
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Mipmaps are filtered in linear light. The other moons, dwarf planets, rings,
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sun and system layout retain their existing assets.
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The source maps are reprojected onto Freelancer's cubed spheres without mirroring
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the poles. Earth combines a geographic surface map with its cloud-opacity map.
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Materials use a neutral detail texture instead of repeating the retail craters
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or cloud noise over the photographic maps. These are diffuse textures: they do
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not add geometry, terrain displacement or a separately moving cloud shell.
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| Body | Source dimensions | Installed faces |
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| --- | --- | --- |
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| Mercury, Earth, Mars, Jupiter, Saturn | 8192 × 4096 | 6 × 4096² |
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| Venus cloud envelope | 4096 × 2048 | 6 × 4096² |
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| Uranus, Neptune | 2048 × 1024 | 6 × 4096² |
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| Moon (LROC 2019 color map) | 16384 × 8192 | 6 × 4096² |
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| Sky (NASA Deep Star Maps 2020) | 16384 × 8192 | 6 × 4096² |
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Output dimensions are not the same as observational resolution: the Uranus,
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Neptune and Venus maps contain less fine detail. Solar System Scope's maps
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include artistic color tuning and filled gaps, as described by their author.
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The NASA sky preserves the published J2000 star positions and the existing
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Sol ecliptic orientation; it is a display-exposed sky, not an exposure simulation.
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## Rebuild
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Requires Python, NumPy, Pillow with its BC1 DDS encoder, and OpenCV with OpenEXR.
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```powershell
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python tools/build_sol_hd_textures.py --download
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python tools/build_sol_hd_textures.py --planets --jobs 3 --resume
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python tools/build_sol_hd_textures.py --sky
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# Close the game, then install:
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python tools/build_sol_hd_textures.py --install
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python tools/verify_sol_hd_textures.py
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```
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Sources are cached in `tools/texture_sources/`. Exact URLs, credits and hashes
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are in `sol_texture_sources.json` and `texture_build/source_manifest.json`.
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Build products, read-back previews, validation reports and runtime screenshots
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are in `tools/texture_build/`. Installation backs up all replaced files under
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`tools/backups/sol-textures-<timestamp>/` before copying the staged outputs.
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Restore those files to the same relative paths to revert. Files newly added by
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the HD pack can remain unused after restoring the original INIs and libraries.
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The original `make_planet_textures.py` and `make_sol_skybox.py` remain available
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as procedural alternatives; running them over the live pack replaces the HD maps.
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`planet_looks.json` is updated so subsequent system rebuilds retain the HD materials.
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The renderer also needs the local source changes: `RemGfx/rg_sky.cpp` keeps 4K
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sky faces instead of reducing them to 2K; `RendComp/Plugins.cpp` recognizes the
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Sol material names as gas/cloud or Earth materials. The installed renderer
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configuration also enables 16× anisotropic filtering. Build Release/x64 RP8 and
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RendComp and copy their DLLs to `GAME/EXE`. The installed pack occupies about
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1.1 GiB, plus the renderer's GPU copies; loading and memory usage increase.
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## Verification (2026-11-11)
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Release/x64 RP8 and RendComp builds passed. All 54 planet faces and six sky
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faces passed container, format, mip-count and material-reference checks;
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the planet face-edge checks passed. Unrelated system data and solar archetypes
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were compared with the backup and preserved.
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Earth and Jupiter were visually checked in the running game. Both runs captured
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screenshots and completed without a crash, renderer errors or new engine warnings.
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The runtime log confirms `4096x4096 faces -> cube 4096 (13 mips)`.
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Reports: `texture_build/validation.json` and `texture_build/runtime/runtime-validation.json`.
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The Earth before/after comparison is `texture_build/previews/earth_before_after.jpg`.
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The first full-install backup is `tools/backups/sol-textures-20261111-202729/`.
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## Credits
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Planet and Earth cloud textures by **Solar System Scope / INOVE**,
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[Solar Textures](https://www.solarsystemscope.com/textures/), used under
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[Creative Commons Attribution 4.0](https://creativecommons.org/licenses/by/4.0/).
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Changes: spherical reprojection, Earth surface/cloud compositing, mip generation,
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BC1 compression and Freelancer material packaging.
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Moon: **NASA/Goddard Space Flight Center Scientific Visualization Studio**, LRO/LROC,
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visualization by **Ernie Wright**, [CGI Moon Kit](https://svs.gsfc.nasa.gov/4720/),
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2019 color map. Changes: spherical reprojection, mip generation and BC1 packaging.
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Sky: **NASA/Goddard Space Flight Center Scientific Visualization Studio**,
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**Ernie Wright**, [Deep Star Maps 2020](https://svs.gsfc.nasa.gov/4851/), using
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Hipparcos-2, Tycho-2 and Gaia DR2 catalog data. Changes: J2000-to-game coordinate
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conversion, cube reprojection, display transfer, dithering and mip generation.
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No endorsement by NASA, ESA or the texture authors is implied.
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