diff options
Diffstat (limited to 'src/LightingThread.h')
| -rw-r--r-- | src/LightingThread.h | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/src/LightingThread.h b/src/LightingThread.h index 770ae809f..f71d2cf1a 100644 --- a/src/LightingThread.h +++ b/src/LightingThread.h @@ -16,7 +16,7 @@ Lighting is calculated in a flood-fill fashion: The seeds need two fast operations: - Check if a block at [x, y, z] is already a seed - Get the next seed in the row -For that reason it is stored in two arrays, one stores a bool saying a seed is in that position, +For that reason it is stored in two arrays, one stores a bool saying a seed is in that position, the other is an array of seed coords, encoded as a single int. Step 2 needs two separate storages for old seeds and new seeds, so there are two actual storages for that purpose, their content is swapped after each full step-2-cycle. @@ -82,7 +82,7 @@ protected: cLightingChunkStay(cLightingThread & a_LightingThread, int a_ChunkX, int a_ChunkZ, cChunkCoordCallback * a_CallbackAfter); protected: - virtual void OnChunkAvailable(int a_ChunkX, int a_ChunkZ) override + virtual void OnChunkAvailable(int a_ChunkX, int a_ChunkZ) override { UNUSED(a_ChunkX); UNUSED(a_ChunkZ); @@ -108,6 +108,9 @@ protected: cEvent m_evtItemAdded; // Set when queue is appended, or to stop the thread cEvent m_evtQueueEmpty; // Set when the queue gets empty + /** The highest block in the current 3x3 chunk data */ + HEIGHTTYPE m_MaxHeight; + // Buffers for the 3x3 chunk data // These buffers alone are 1.7 MiB in size, therefore they cannot be located on the stack safely - some architectures may have only 1 MiB for stack, or even less @@ -136,8 +139,8 @@ protected: /** Lights the entire chunk. If neighbor chunks don't exist, touches them and re-queues the chunk */ void LightChunk(cLightingChunkStay & a_Item); - /** Prepares m_BlockTypes and m_HeightMap data; returns false if any of the chunks fail. Zeroes out the light arrays */ - bool ReadChunks(int a_ChunkX, int a_ChunkZ); + /** Prepares m_BlockTypes and m_HeightMap data; zeroes out the light arrays */ + void ReadChunks(int a_ChunkX, int a_ChunkZ); /** Uses m_HeightMap to initialize the m_SkyLight[] data; fills in seeds for the skylight */ void PrepareSkyLight(void); @@ -145,12 +148,16 @@ protected: /** Uses m_BlockTypes to initialize the m_BlockLight[] data; fills in seeds for the blocklight */ void PrepareBlockLight(void); + /** Same as PrepareBlockLight(), but uses a different traversal scheme; possibly better perf cache-wise. + To be compared in perf benchmarks. */ + void PrepareBlockLight2(void); + /** Calculates light in the light array specified, using stored seeds */ void CalcLight(NIBBLETYPE * a_Light); /** Does one step in the light calculation - one seed propagation and seed recalculation */ void CalcLightStep( - NIBBLETYPE * a_Light, + NIBBLETYPE * a_Light, int a_NumSeedsIn, unsigned char * a_IsSeedIn, unsigned int * a_SeedIdxIn, int & a_NumSeedsOut, unsigned char * a_IsSeedOut, unsigned int * a_SeedIdxOut ); @@ -159,7 +166,7 @@ protected: void CompressLight(NIBBLETYPE * a_LightArray, NIBBLETYPE * a_ChunkLight); inline void PropagateLight( - NIBBLETYPE * a_Light, + NIBBLETYPE * a_Light, unsigned int a_SrcIdx, unsigned int a_DstIdx, int & a_NumSeedsOut, unsigned char * a_IsSeedOut, unsigned int * a_SeedIdxOut ) |