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feat(editor): add --info-mesh-storage-budget byte-category breakdown

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Estimated bytes-per-category breakdown for a single WOM. Numbers
are based on the in-memory struct sizes (vertex 40B, index 4B,
bone 22B, batch 16B, anim keyframe 44B, plus texture path strings)
— not the actual on-disk encoding (which has framing overhead) —
but the relative shares are accurate and help users decide where
shrinking efforts pay off.

Surfaces actionable tips when a category dominates: animations >
vertices → suggest --strip-mesh --anims with the saved KB; bones
non-trivial → suggest --bones for static placement; vertices
dominate → suggest a lower-poly variant.

Verified on procedural cube: 960B vertices (85%) + 144B indices
(13%) + 16B batches + 8B textures, total 1128 estimated vs 1184
on-disk (~5% framing overhead). Tip correctly fires for
vertex-dominated mesh. Brings command count to 231.
This commit is contained in:
Kelsi 2026-05-07 09:00:47 -07:00
parent ca8c366870
commit 7ce5aac3e5
1 changed files with 122 additions and 0 deletions
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122
tools/editor/main.cpp
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@ -837,6 +837,8 @@ static void printUsage(const char* argv0) {
std::printf(" Per-mesh listing of every .wom in a zone (verts, tris, bones, textures, bytes)\n");
std::printf(" --info-mesh <wom-base> [--json]\n");
std::printf(" Single-mesh detail: bounds, version, batches, bones, textures, attachments in one view\n");
std::printf(" --info-mesh-storage-budget <wom-base> [--json]\n");
std::printf(" Estimated bytes-per-category breakdown for a single WOM (vertices/indices/bones/...)\n");
std::printf(" --list-project-meshes <projectDir> [--json]\n");
std::printf(" Per-mesh listing across every zone in a project (sorted by triangle count)\n");
std::printf(" --info-project-models-total <projectDir> [--json]\n");
@ -962,6 +964,7 @@ int main(int argc, char* argv[]) {
"--list-project-textures",
"--info-zone-models-total", "--info-project-models-total",
"--list-zone-meshes", "--list-project-meshes", "--info-mesh",
"--info-mesh-storage-budget",
"--info-wob", "--info-woc", "--info-wot",
"--info-creatures", "--info-objects", "--info-quests",
"--info-extract", "--info-extract-tree", "--info-extract-budget",
@ -2313,6 +2316,125 @@ int main(int argc, char* argv[]) {
}
}
return 0;
} else if (std::strcmp(argv[i], "--info-mesh-storage-budget") == 0 && i + 1 < argc) {
// Estimated bytes-per-category breakdown for a WOM.
// Numbers are based on the in-memory struct sizes, not
// the actual on-disk encoding (which has framing
// overhead) — but the relative shares are accurate and
// help users decide where shrinking efforts pay off.
//
// For example: a heightmap mesh's bytes are dominated by
// vertices, so reducing vertex count is the lever to
// pull. A skeletal mesh's animation keyframes can dwarf
// the geometry itself — surfacing that lets the user
// know to consider --strip-mesh --anims.
std::string base = argv[++i];
bool jsonOut = (i + 1 < argc &&
std::strcmp(argv[i + 1], "--json") == 0);
if (jsonOut) i++;
if (base.size() >= 4 && base.substr(base.size() - 4) == ".wom") {
base = base.substr(0, base.size() - 4);
}
if (!wowee::pipeline::WoweeModelLoader::exists(base)) {
std::fprintf(stderr,
"info-mesh-storage-budget: %s.wom does not exist\n",
base.c_str());
return 1;
}
auto wom = wowee::pipeline::WoweeModelLoader::load(base);
if (!wom.isValid()) {
std::fprintf(stderr,
"info-mesh-storage-budget: failed to load %s.wom\n",
base.c_str());
return 1;
}
// Per-category byte estimates. Vertex is 12+12+8+4+4=40
// bytes (pos/normal/uv/4 weights/4 indices). Index is
// 4 bytes. Bone is 4+2+12+4=22 bytes. Batch is 4+4+4+2+
// 2=16. Animation keyframe is 4+12+16+12=44 bytes.
// Texture path is summed length plus a small per-string
// overhead.
uint64_t vertBytes = wom.vertices.size() * 40;
uint64_t idxBytes = wom.indices.size() * 4;
uint64_t boneBytes = wom.bones.size() * 22;
uint64_t batchBytes = wom.batches.size() * 16;
uint64_t animBytes = 0;
size_t totalKeyframes = 0;
for (const auto& a : wom.animations) {
animBytes += 12; // id + duration + movingSpeed
for (const auto& bone : a.boneKeyframes) {
animBytes += bone.size() * 44;
totalKeyframes += bone.size();
}
}
uint64_t texBytes = 0;
for (const auto& t : wom.texturePaths) texBytes += t.size() + 8;
namespace fs = std::filesystem;
uint64_t actualBytes = fs::file_size(base + ".wom");
uint64_t estBytes = vertBytes + idxBytes + boneBytes +
batchBytes + animBytes + texBytes;
struct Row { const char* name; uint64_t bytes; };
std::vector<Row> rows = {
{"vertices ", vertBytes},
{"indices ", idxBytes},
{"bones ", boneBytes},
{"animations", animBytes},
{"batches ", batchBytes},
{"textures ", texBytes},
};
if (jsonOut) {
nlohmann::json j;
j["base"] = base;
j["fileBytes"] = actualBytes;
j["estimatedBytes"] = estBytes;
j["categories"] = nlohmann::json::object();
for (const auto& r : rows) {
double share = estBytes > 0
? 100.0 * r.bytes / estBytes : 0.0;
j["categories"][r.name] = {{"bytes", r.bytes},
{"share", share}};
}
j["counts"] = {{"vertices", wom.vertices.size()},
{"indices", wom.indices.size()},
{"bones", wom.bones.size()},
{"animations", wom.animations.size()},
{"keyframes", totalKeyframes},
{"batches", wom.batches.size()},
{"textures", wom.texturePaths.size()}};
std::printf("%s\n", j.dump(2).c_str());
return 0;
}
std::printf("Mesh storage budget: %s.wom\n", base.c_str());
std::printf(" on-disk : %llu bytes (%.1f KB)\n",
static_cast<unsigned long long>(actualBytes),
actualBytes / 1024.0);
std::printf(" estimated : %llu bytes (sum of in-memory parts)\n",
static_cast<unsigned long long>(estBytes));
std::printf("\n Per-category (estimated):\n");
for (const auto& r : rows) {
if (r.bytes == 0) continue;
double share = estBytes > 0
? 100.0 * r.bytes / estBytes : 0.0;
std::printf(" %s : %10llu bytes (%5.1f%%)\n",
r.name,
static_cast<unsigned long long>(r.bytes),
share);
}
std::printf("\n Tips:\n");
if (animBytes > vertBytes && wom.animations.size() > 0) {
std::printf(" - animations dominate; --strip-mesh "
"--anims would save %.1f KB\n",
animBytes / 1024.0);
}
if (boneBytes > vertBytes / 2 && wom.bones.size() > 0) {
std::printf(" - bones non-trivial; consider "
"--strip-mesh --bones for static placement\n");
}
if (vertBytes > estBytes / 2) {
std::printf(" - vertices dominate; check if a "
"lower-poly variant works for placement\n");
}
return 0;
} else if (std::strcmp(argv[i], "--info-project-models-total") == 0 && i + 1 < argc) {
// Multi-zone aggregate. Walks every zone in <projectDir>,
// sums the same WOM/WOB metrics --info-zone-models-total