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feat(render3d): 23.4 - model_release, shared textures counted, and scatter layers sized to what they hold

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- model_release(model) frees each primitive's mesh, and each texture once no other model uses it:
  the glTF texture cache counts the primitives using each texture (a path loaded again, and a LOD
  chain borrowing its LOD0's material, each take a reference); the last one frees the texture and
  forgets it along with any remembered material naming it, so a later load is a fresh one
- a scatter layer's instance and sort arrays start at 256 and double as layer_add or a stream
  fills them, to the layer's cap, instead of the whole cap up front (0.4 GB in Maroon Lake)
- gvk_tex_read's copy struct comes from the scratch ring
- examples/rendering/release.ludic holds it (RELEASE OK on Vulkan and OpenGL), in the suite

smooth renders pixel-identical before and after (max |d| 0). ludic-dev test 306/306.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-27 23:29:01 +03:00
parent 70a92a8862
commit e634177ca4
10 changed files with 189 additions and 7 deletions
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11
packages/ludic.render3d/gltf.ludic
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@ -50,17 +50,17 @@ function gltf_mat_remember(render3d_st: mut Render3dState, name: string, diff: i
}
function gltf_texture(render3d_st: mut Render3dState, uri: string, srgb: bool) -> int {
if render3d_st.gltf_tex_paths == null { render3d_st.gltf_tex_paths = new []pointer; render3d_st.gltf_tex_ids = words(256) }
if render3d_st.gltf_tex_paths == null { render3d_st.gltf_tex_paths = new []pointer; render3d_st.gltf_tex_ids = words(256); render3d_st.gltf_tex_refs = words(256) }
var png: string = uri
let n = len(uri)
if n > 4 and uri[n - 4] == '.' and uri[n - 3] == 'j' { png = uri[0 .. n - 4] + ".png" }
let path = render3d_st.gltf_dir + "/" + png
var i = 0
while i < render3d_st.gltf_tex_n { if render3d_st.gltf_tex_paths[i] == path { return render3d_st.gltf_tex_ids[i] }; i += 1 }
while i < render3d_st.gltf_tex_n { if render3d_st.gltf_tex_paths[i] == path { render3d_st.gltf_tex_refs[i] += 1; return render3d_st.gltf_tex_ids[i] }; i += 1 }
var dil = 0
if render3d_st.gltf_cutout { dil = 24 }
let id = tex_load_ex(render3d_st, path, srgb, dil)
if render3d_st.gltf_tex_n < 256 { push(render3d_st.gltf_tex_paths, path); render3d_st.gltf_tex_ids[render3d_st.gltf_tex_n] = id; render3d_st.gltf_tex_n += 1 }
if render3d_st.gltf_tex_n < 256 { push(render3d_st.gltf_tex_paths, path); render3d_st.gltf_tex_ids[render3d_st.gltf_tex_n] = id; render3d_st.gltf_tex_refs[render3d_st.gltf_tex_n] = 1; render3d_st.gltf_tex_n += 1 }
return id
}
@ -150,7 +150,10 @@ function gltf_prim(render3d_st: mut Render3dState, p: Val) -> Prim {
if ud != null { gltf_mat_remember(render3d_st, mname, pr.diff, pr.nrm, pr.arm) }
else {
let k = gltf_mat_find(render3d_st, mname)
if k >= 0 { pr.diff = render3d_st.gltf_mat_diff[k]; pr.nrm = render3d_st.gltf_mat_nrm[k]; pr.arm = render3d_st.gltf_mat_arm[k] }
if k >= 0 {
pr.diff = render3d_st.gltf_mat_diff[k]; pr.nrm = render3d_st.gltf_mat_nrm[k]; pr.arm = render3d_st.gltf_mat_arm[k]
gltf_tex_ref(render3d_st, pr.diff); gltf_tex_ref(render3d_st, pr.nrm); gltf_tex_ref(render3d_st, pr.arm)
}
else { print(`gltf: material {mname} has no textures and none were loaded before it`) }
}
}