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Async humanoid NPC texture pipeline to eliminate 30-150ms main-thread stalls

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Move all DBC lookups (CharSections, ItemDisplayInfo), texture path resolution,
and BLP decoding for humanoid NPCs to background threads. Only GPU texture
uploads remain on the main thread via pre-decoded BLP cache.
This commit is contained in:
Kelsi 2026-03-07 16:54:58 -08:00
parent 7ac990cff4
commit faca22ac5f
3 changed files with 703 additions and 327 deletions
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70
src/rendering/character_renderer.cpp
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@ -836,7 +836,19 @@ VkTexture* CharacterRenderer::compositeTextures(const std::vector<std::string>&
}
// Load base layer
auto base = assetManager->loadTexture(layerPaths[0]);
pipeline::BLPImage base;
if (predecodedBLPCache_) {
std::string key = layerPaths[0];
std::replace(key.begin(), key.end(), '/', '\\');
std::transform(key.begin(), key.end(), key.begin(),
[](unsigned char c) { return static_cast<char>(std::tolower(c)); });
auto pit = predecodedBLPCache_->find(key);
if (pit != predecodedBLPCache_->end()) {
base = std::move(pit->second);
predecodedBLPCache_->erase(pit);
}
}
if (!base.isValid()) base = assetManager->loadTexture(layerPaths[0]);
if (!base.isValid()) {
core::Logger::getInstance().warning("Composite: failed to load base layer: ", layerPaths[0]);
return whiteTexture_.get();
@ -877,7 +889,19 @@ VkTexture* CharacterRenderer::compositeTextures(const std::vector<std::string>&
for (size_t layer = 1; layer < layerPaths.size(); layer++) {
if (layerPaths[layer].empty()) continue;
auto overlay = assetManager->loadTexture(layerPaths[layer]);
pipeline::BLPImage overlay;
if (predecodedBLPCache_) {
std::string key = layerPaths[layer];
std::replace(key.begin(), key.end(), '/', '\\');
std::transform(key.begin(), key.end(), key.begin(),
[](unsigned char c) { return static_cast<char>(std::tolower(c)); });
auto pit = predecodedBLPCache_->find(key);
if (pit != predecodedBLPCache_->end()) {
overlay = std::move(pit->second);
predecodedBLPCache_->erase(pit);
}
}
if (!overlay.isValid()) overlay = assetManager->loadTexture(layerPaths[layer]);
if (!overlay.isValid()) {
core::Logger::getInstance().warning("Composite: FAILED to load overlay: ", layerPaths[layer]);
continue;
@ -1054,7 +1078,19 @@ VkTexture* CharacterRenderer::compositeWithRegions(const std::string& basePath,
return whiteTexture_.get();
}
auto base = assetManager->loadTexture(basePath);
pipeline::BLPImage base;
if (predecodedBLPCache_) {
std::string key = basePath;
std::replace(key.begin(), key.end(), '/', '\\');
std::transform(key.begin(), key.end(), key.begin(),
[](unsigned char c) { return static_cast<char>(std::tolower(c)); });
auto pit = predecodedBLPCache_->find(key);
if (pit != predecodedBLPCache_->end()) {
base = std::move(pit->second);
predecodedBLPCache_->erase(pit);
}
}
if (!base.isValid()) base = assetManager->loadTexture(basePath);
if (!base.isValid()) {
return whiteTexture_.get();
}
@ -1093,7 +1129,19 @@ VkTexture* CharacterRenderer::compositeWithRegions(const std::string& basePath,
bool upscaled = (base.width == 256 && base.height == 256 && width == 512);
for (const auto& ul : baseLayers) {
if (ul.empty()) continue;
auto overlay = assetManager->loadTexture(ul);
pipeline::BLPImage overlay;
if (predecodedBLPCache_) {
std::string key = ul;
std::replace(key.begin(), key.end(), '/', '\\');
std::transform(key.begin(), key.end(), key.begin(),
[](unsigned char c) { return static_cast<char>(std::tolower(c)); });
auto pit = predecodedBLPCache_->find(key);
if (pit != predecodedBLPCache_->end()) {
overlay = std::move(pit->second);
predecodedBLPCache_->erase(pit);
}
}
if (!overlay.isValid()) overlay = assetManager->loadTexture(ul);
if (!overlay.isValid()) continue;
if (overlay.width == width && overlay.height == height) {
@ -1171,7 +1219,19 @@ VkTexture* CharacterRenderer::compositeWithRegions(const std::string& basePath,
int regionIdx = rl.first;
if (regionIdx < 0 || regionIdx >= 8) continue;
auto overlay = assetManager->loadTexture(rl.second);
pipeline::BLPImage overlay;
if (predecodedBLPCache_) {
std::string key = rl.second;
std::replace(key.begin(), key.end(), '/', '\\');
std::transform(key.begin(), key.end(), key.begin(),
[](unsigned char c) { return static_cast<char>(std::tolower(c)); });
auto pit = predecodedBLPCache_->find(key);
if (pit != predecodedBLPCache_->end()) {
overlay = std::move(pit->second);
predecodedBLPCache_->erase(pit);
}
}
if (!overlay.isValid()) overlay = assetManager->loadTexture(rl.second);
if (!overlay.isValid()) {
core::Logger::getInstance().warning("compositeWithRegions: failed to load ", rl.second);
continue;