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Applied ker's patch for prefetch and flush.

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This commit is contained in:
David Williams
2011-03-22 21:44:12 +00:00
parent c7e452f537
commit 78c5884303
5 changed files with 99 additions and 4 deletions
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11
library/PolyVoxCore/include/Volume.h
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@ -186,6 +186,17 @@ namespace PolyVox
bool setVoxelAt(int32_t uXPos, int32_t uYPos, int32_t uZPos, VoxelType tValue);
/// Sets the voxel at a 3D vector position
bool setVoxelAt(const Vector3DInt32& v3dPos, VoxelType tValue);
/// makes sure all the voxels in the given region are loaded
/// if MaxNumberOfBlocksInMemory is not large enough to support the region
/// this function will return false and the volume is unchanged
/// if all the voxels in the given region are already loaded, this function will not do anything but still return true.
/// other blocks might be unloaded to make space for the new blocks
bool prefetchRegion(Region regPrefetch);
/// attempts to unload all the voxels in the given region.
/// there is no guarantee that any voxels are unloaded
/// try unloading a region whose sidelengths are multiples of BlockSideLength
/// returns the number of voxels that were actually unloaded
uint32_t flushRegion(Region regFlush);
void clearBlockCache(void);
float calculateCompressionRatio(void);