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feat(ludic.lab): the visual lab as a package - a scene on a plate, never a world

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A scene is an entry in the open registry LabScenes, shown on a plate: a
flat lit disc, the package's own small sky with the sun at one hour, and
a frame clock. Headless each camera (lab_shot, lab_shot_at) settles and
is written as build/lab/<scene>/<shot>.png (a stored PNG, written here);
in a window N and P step through them. tools/lab/run.sh and sheet.py
make the contact sheet; tools/lab/plate_build.py makes plate/.
ludic.render3d gains r3d_plate_mode (no terrain, grass or water is made)
and r3d_sky_path. quit() in a program with no frame loop links. The
example takes ~120 MB resident, 417 MiB peak footprint. Reseed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-25 07:48:43 +03:00
parent cc930a114f
commit b401f7acc1
35 changed files with 4184 additions and 2986 deletions
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26
tools/ludic-cli/test.ludic
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@ -446,6 +446,31 @@ function expect_fp_fail_case() -> void {
if got == `{src}:4: expect_near failed (got 1.5, want 2)` { ok(lbl) } else { bad2(lbl, `said [{got}]`) }
}
# ludic.lab: a scene on the plate, headless, three shots as PNGs, in well under a gigabyte
function lab_plate_case() -> void {
let lbl = "ludic.lab: the example's three shots on the plate, as PNGs, under 1 GB"
if not is_darwin() { skip(lbl); return }
let bin = `{tmp_dir()}/lab_plate`
if not shq(`bin/ludic build packages/ludic.lab/example/plate.ludic --headless -o {bin} > {tmp_dir()}/lab.out 2>&1`) { bad2(lbl, capture_line(`grep -i error {tmp_dir()}/lab.out | head -1`)); return }
# from the checkout's root, where the renderer's shaders and the plate are found beside it
let work = `{tmp_dir()}/labrun`
shell(`rm -rf {work} build/lab/probe && mkdir -p {work}`)
if not shq(`yes '' | head -300 | /usr/bin/time -l {bin} > {work}/run.out 2> {work}/time.out`) { bad2(lbl, capture_line(`tail -1 {work}/run.out`)); return }
var n = 0
let names = ["front", "side", "above"]
for i in 0 .. 3 {
if shq(`file build/lab/probe/{names[i]}.png | grep -q 'PNG image data, 1920 x 1080'`) { n += 1 }
}
let last = capture_line(`tail -1 {work}/run.out`)
if n != 3 { bad2(lbl, `{string(n)} of 3 shots are PNGs: {last}`); return }
let pl = s_trim(capture_line(`grep 'peak memory footprint' {work}/time.out`))
var k = 0
while k < len(pl) and pl[k] >= '0' and pl[k] <= '9' { k += 1 }
let peak = pl[0 .. k]
if len(peak) >= 10 { bad2(lbl, `peak memory footprint {peak} bytes`); return }
ok(`{lbl} (peak {peak} bytes)`)
}
# every package's own tests, the way a package author runs them: `ludic test packages`
function packages_test_case() -> void {
let lbl = "ludic test packages: every package's tests pass"
@ -1013,6 +1038,7 @@ function cmd_dev_test() -> int {
package_scripts_case()
test_dir_case()
packages_test_case()
lab_plate_case()
pack_roundtrip_case()
packignore_case()
os_dirs_case()