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render3d: free a texture's create infos and the .dds path it looked for; steady's model at 0

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gvk_tex_storage freed none of ici, out, req and vci (8 blocks a two-texture model); tex_load_ex kept
dds_path_of's string. Found with malloc_history over 400 load/release rounds (712 bytes a round, all
of it these). steady: the model's bound is 4 KB over 200 (was 1.6 MB), and the frame is the least of
three settled windows - a valley self-test beside it read 87 KB once.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-28 12:25:02 +03:00
parent 328dee77c8
commit 1adce5b58b
4 changed files with 43 additions and 14 deletions
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16
examples/rendering/steady.ludic
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@ -1,7 +1,7 @@
# steady.ludic - render3d allocates nothing in its steady state: a buffer released and made again
# (what a streamed or grown buffer does every few frames) and a whole frame, drawn over and over,
# leave malloc's live bytes where they were. Prints STEADY OK. The heap is read on the Mac
# (Vk.heap_bytes); elsewhere it reads 0 and the check passes on the run alone.
# (Vk.heap_bytes) once the device is idle; elsewhere it reads 0 and the check passes on the run alone.
#
# bin/ludic build examples/rendering/steady.ludic --headless && ./build/steady_headless
program Steady {
@ -95,7 +95,13 @@ program Steady {
buffer_rounds(render3d_st, b, 500)
let grew_b = buffer_rounds(render3d_st, b, 5000)
frame_rounds(render3d_st, 120)
let grew_f = frame_rounds(render3d_st, 600)
# the least of three windows: a leak grows in every one, while a busy GPU's lag (a valley
# self-test beside it once read 87 KB) does not repeat three times
var grew_f = frame_rounds(render3d_st, 600)
for w in 0 .. 2 {
let g = frame_rounds(render3d_st, 600)
if g < grew_f { grew_f = g }
}
model_rounds(render3d_st, 20)
let grew_m = model_rounds(render3d_st, 200)
let am = gltf_load(render3d_st, "packages/ludic.lab/plate", "plate.gltf", "plate")
@ -116,9 +122,9 @@ program Steady {
ok = false
print("steady: FAILED - a parsed document freed whole leaves memory behind")
}
# a load keeps a few records of its own for now (handles are not reused); a document's strings
# left behind were ~640 KB a model, so a bound of 8 KB a round is what this holds
if grew_m >= 200 * 8192 {
# a load and a release leave nothing: 0 over 200 (a document's strings were ~640 KB a model, a
# texture's create infos and its .dds path ~700 bytes a round)
if grew_m >= 4096 {
ok = false
print("steady: FAILED - a model loaded and let go leaves memory behind")
}