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author | Tiger Wang <ziwei.tiger@hotmail.co.uk> | 2014-12-13 13:11:01 +0100 |
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committer | Tiger Wang <ziwei.tiger@hotmail.co.uk> | 2014-12-13 13:11:01 +0100 |
commit | 4b20a615192baeb5ef0a04a10161a03428cda8cd (patch) | |
tree | c6f25102267b0cc4a444f6e746679405948142b0 /Tools/QtBiomeVisualiser/ChunkCache.cpp | |
parent | Fixed compilation? (diff) | |
parent | Merge pull request #1660 from Seadragon91/master (diff) | |
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Diffstat (limited to 'Tools/QtBiomeVisualiser/ChunkCache.cpp')
-rw-r--r-- | Tools/QtBiomeVisualiser/ChunkCache.cpp | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/Tools/QtBiomeVisualiser/ChunkCache.cpp b/Tools/QtBiomeVisualiser/ChunkCache.cpp deleted file mode 100644 index 05c267d30..000000000 --- a/Tools/QtBiomeVisualiser/ChunkCache.cpp +++ /dev/null @@ -1,126 +0,0 @@ -#include "Globals.h" -#include "ChunkCache.h" -#include <QMutexLocker> -#include <QThreadPool> -#include "ChunkSource.h" -#include "ChunkLoader.h" - - - - - -ChunkCache::ChunkCache(QObject * parent) : - super(parent) -{ - m_Cache.setMaxCost(1024 * 1024 * 1024); // 1 GiB of memory for the cache -} - - - - - -ChunkPtr ChunkCache::fetch(int a_ChunkX, int a_ChunkZ) -{ - // Retrieve from the cache: - quint32 hash = getChunkHash(a_ChunkX, a_ChunkZ); - ChunkPtr * res; - { - QMutexLocker lock(&m_Mtx); - res = m_Cache[hash]; - // If succesful and chunk loaded, return the retrieved value: - if ((res != nullptr) && (*res)->isValid()) - { - return *res; - } - } - - // If the chunk is in cache but not valid, it means it has been already queued for rendering, do nothing now: - if (res != nullptr) - { - return ChunkPtr(nullptr); - } - - // There's no such item in the cache, create it now: - res = new ChunkPtr(new Chunk); - if (res == nullptr) - { - return ChunkPtr(nullptr); - } - { - QMutexLocker lock(&m_Mtx); - m_Cache.insert(hash, res, sizeof(Chunk)); - } - - // Queue the chunk for rendering: - queueChunkRender(a_ChunkX, a_ChunkZ, *res); - - // Return failure, the chunk is not yet rendered: - return ChunkPtr(nullptr); -} - - - - - -void ChunkCache::setChunkSource(std::shared_ptr<ChunkSource> a_ChunkSource) -{ - // Replace the chunk source: - m_ChunkSource = a_ChunkSource; - - // Clear the cache: - QMutexLocker lock(&m_Mtx); - m_Cache.clear(); -} - - - - - -void ChunkCache::reload() -{ - assert(m_ChunkSource.get() != nullptr); - - // Reload the chunk source: - m_ChunkSource->reload(); - - // Clear the cache: - QMutexLocker lock(&m_Mtx); - m_Cache.clear(); -} - - - - - -void ChunkCache::gotChunk(int a_ChunkX, int a_ChunkZ) -{ - emit chunkAvailable(a_ChunkX, a_ChunkZ); -} - - - - - -quint32 ChunkCache::getChunkHash(int a_ChunkX, int a_ChunkZ) -{ - // Simply join the two coords into a single int - // The coords will never be larger than 16-bits, so we can do this safely - return (((static_cast<quint32>(a_ChunkX) & 0xffff) << 16) | (static_cast<quint32>(a_ChunkZ) & 0xffff)); -} - - - - - -void ChunkCache::queueChunkRender(int a_ChunkX, int a_ChunkZ, ChunkPtr & a_Chunk) -{ - // Create a new loader task: - ChunkLoader * loader = new ChunkLoader(a_ChunkX, a_ChunkZ, a_Chunk, m_ChunkSource); - connect(loader, SIGNAL(loaded(int, int)), this, SLOT(gotChunk(int, int))); - - QThreadPool::globalInstance()->start(loader); -} - - - - |