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render3d + lab: bakes as PNGs, and impostors, the sky's light and the carpet read from their bakes

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ludic.lab: lab_png_write / lab_png_write_from (raw 8-bit, 1-4 channels, stored deflate) in png_write.ludic,
importable alone with its own LabPngState; png_convert.ludic's previews of float textures (R32F min..max,
RG16F x255, HDR x/(1+x) + sRGB); lab_ppm_to_png on the same encoder.
render3d: bake_load.ludic - impostor_from_baked / impostor_source / impostor_refill (a fog re-open reads
the bake), sky_baked_in and sky_precompute trying the bake at the start yaw (sky_compute is the
convolution, and sky_ibl_bytes always uses it), carpet_from_baked / carpet_bytes / carpet_finish,
bake_part_count / _len / _off. Compile-only: nothing run.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-29 19:10:06 +03:00
parent f79390838a
commit 6c690c5db6
15 changed files with 396 additions and 107 deletions
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packages/ludic.lab/README.md
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@ -61,6 +61,8 @@ showing its own models - adds them from its own module with `def LabScenes <name
| `lab_settle(frames)`, `lab_font(dir)`, `lab_title(s)`, `lab_note(s)` | how long a shot settles; the overlay font for captions (none by default); the window's title; a line under the caption |
| `lab_scene()`, `lab_frame()`, `lab_time()` | the scene, and the lab's clock |
| `lab_ppm_to_png(ppm, png)` | a frame as a PNG (stored, not compressed) |
| `lab_png_write(path, w, h, channels, px)`, `lab_png_write_from(..., px, at)` | 8-bit pixels (1 grey, 2 grey + alpha, 3 RGB, 4 RGBA) as a PNG, the same way; `png_write.ludic` needs nothing else of the lab, so a program with a lab of its own imports it alone (`import "ludic.lab/png_write.ludic"`, state `LabPngState`) |
| `lab_px_r32f_norm`, `lab_px_rg16f`, `lab_px_rgba16f_hdr` (`png_convert.ludic`) | previews of float textures as 8-bit pixels: R32F min..max to black..white; RG16F as red and green x255, blue 0; HDR RGBA16F as x/(1+x) then sRGB, alpha dropped |
## The plate's files