void HiresTexture::Init()
{
size_sum.store(0);
size_t sys_mem = MemPhysical();
size_t recommended_min_mem = 2 * size_t(1024 * 1024 * 1024);
// keep 2GB memory for system stability if system RAM is 4GB+ - use half of memory in other cases
max_mem = (sys_mem / 2 < recommended_min_mem) ? (sys_mem / 2) : (sys_mem - recommended_min_mem);
Update();
}
void HiresTexture::Prefetch()
{
Common::SetCurrentThreadName("Prefetcher");
size_t size_sum = 0;
size_t sys_mem = MemPhysical();
size_t recommended_min_mem = 2 * size_t(1024 * 1024 * 1024);
// keep 2GB memory for system stability if system RAM is 4GB+ - use half of memory in other cases
size_t max_mem = (sys_mem / 2 < recommended_min_mem) ? (sys_mem / 2) : (sys_mem - recommended_min_mem);
u32 starttime = Common::Timer::GetTimeMs();
for (const auto& entry : s_textureMap)
{
const std::string& base_filename = entry.first;
if (base_filename.find("_mip") == std::string::npos)
{
{
// try to get this mutex first, so the video thread is allow to get the real mutex faster
std::unique_lock<std::mutex> lk(s_textureCacheAquireMutex);
}
std::unique_lock<std::mutex> lk(s_textureCacheMutex);
auto iter = s_textureCache.find(base_filename);
if (iter == s_textureCache.end())
{
// unlock while loading a texture. This may result in a race condition where we'll load a texture twice,
// but it reduces the stuttering a lot. Notice: The loading library _must_ be thread safe now.
// But bad luck, SOIL isn't, so TODO: remove SOIL usage here and use libpng directly
// Also TODO: remove s_textureCacheAquireMutex afterwards. It won't be needed as the main mutex will be locked rarely
//lk.unlock();
std::unique_ptr<HiresTexture> texture = Load(base_filename, 0, 0);
//lk.lock();
if (texture)
{
std::shared_ptr<HiresTexture> ptr(std::move(texture));
iter = s_textureCache.insert(iter, std::make_pair(base_filename, ptr));
}
}
if (iter != s_textureCache.end())
{
for (const Level& l : iter->second->m_levels)
{
size_sum += l.data_size;
}
}
}
if (s_textureCacheAbortLoading.IsSet())
{
return;
}
if (size_sum > max_mem)
{
g_Config.bCacheHiresTextures = false;
OSD::AddMessage(StringFromFormat("Custom Textures prefetching after %.1f MB aborted, not enough RAM available", size_sum / (1024.0 * 1024.0)), 10000);
return;
}
}
u32 stoptime = Common::Timer::GetTimeMs();
OSD::AddMessage(StringFromFormat("Custom Textures loaded, %.1f MB in %.1f s", size_sum / (1024.0 * 1024.0), (stoptime - starttime) / 1000.0), 10000);
}
