b90f0d4e15
Made the FilePager a little more robust regarding filename conflicts.
2015-04-10 16:47:50 +02:00
4c24d61408
Added another function for backwards compatibility.
2015-04-05 12:03:12 +02:00
c887d1444f
Added utility function for people who already have data in linear order, to convert it to Morton order.
2015-04-05 10:14:25 +02:00
d521b08cf9
Added comment.
2015-04-04 09:57:31 +02:00
dec06bcfe4
Added caching of variable.
2015-04-04 09:49:12 +02:00
77db90ac30
Removed unneeded variable.
2015-04-04 09:42:46 +02:00
0d36c416f2
Tidied up macros.
2015-04-04 09:18:51 +02:00
3ca0222b19
Applied simplified test when going in the negative direction as well.
2015-04-04 00:08:20 +02:00
d1bcaec2c5
This commit knocks about 30% off the run time of the sampler tests by using a more efficient check for whether we are near the edge of the chunk.
2015-04-02 23:11:19 +02:00
135aa96bdf
Further fixes for move...() functions.
2015-04-01 23:34:57 +02:00
056cae39b5
Fixed sampler move...() functions to work with Morton ordering.
2015-04-01 22:57:22 +02:00
b518978cd6
Enlarged lookup tables to 256 elements.
2015-04-01 22:34:42 +02:00
65f39e7b57
Made the values signed ints, as otherwise the casting was doing something strange on 64-bit systems.
2015-04-01 16:29:19 +02:00
5d220c5d57
Added extra lookup tables to avoid the need to multiply y/z deltas by 2/4 each time.
2015-03-31 23:58:01 +02:00
60612c5583
Implemented use of delta for the rest of the peek functions.
2015-03-31 19:55:22 +02:00
afd0650230
Implemented peeking in positive x and negative x directions using Matt's delta lookup table.
2015-03-31 16:33:56 +02:00
120b8e84cc
Added position in chunk and pointer to current chunk data to sampler.
2015-03-30 23:33:51 +02:00
d34c1d227c
Merge branch 'develop' into feature/morton-encoding
2015-03-30 15:38:34 +02:00
5847219331
Fixed bug with chunk timestamp not being updated.
2015-03-30 15:36:28 +02:00
b415e5c5f3
calculateAmbientOcclusion() now works with both RawVolume and PagedVolume.
2015-03-30 11:44:25 +02:00
d000616d3e
Revert "Ambient occlusion test now uses RawVolume, as it need a fixed size volume to create a temporary array."
...
This reverts commit 396d1cfc59
2015-03-30 11:24:48 +02:00
413bb95b1a
Passing parameter as const ref.
2015-03-30 11:01:08 +02:00
7f96005985
Commented out optimized path in sampler as it doesn't work now that we are using Morton ordering for the data in chunks. However, we can probably reinstate such a fast path if we give some thought as to how it should be done.
2015-03-29 09:58:28 +02:00
d3b2dab1ac
Switched to using lookup tables for Morton encoding.
2015-03-29 00:17:27 +01:00
d99ed5e624
Implemented morton encoding using standard bit-twidling approach.
2015-03-28 09:46:05 +01:00
9256f3deb5
Fixed compile warning.
2015-03-27 21:23:31 +01:00
322bedc009
Improved test for PagedVolume::Chunk performance.
2015-03-26 23:45:01 +01:00
3facd4df41
Removed commented out code.
2015-03-21 16:27:43 +01:00
d6c708f869
Merge branch 'develop' into feature/optimize-paged-volume
2015-03-21 16:24:46 +01:00
b027cf1a0c
Moved common code into function.
2015-03-21 16:22:23 +01:00
778238d11d
Moved the test for whether we are accessing the same voxel as last time.
2015-03-21 14:57:48 +01:00
d477bec540
Revert "Replaced Vector3D with integer as key to map."
...
This reverts commit e82d6beca1
2015-03-21 14:41:15 +01:00
672c375a7a
Revert "Work on using a bitfield to set up chunk key."
...
This reverts commit 8bd8f8ba7a
2015-03-21 14:41:10 +01:00
5fc0317260
Revert "Added typedef for chunk key type."
...
This reverts commit 6419c5827b
2015-03-21 14:41:04 +01:00
92eaaae765
Revert "Decided to always use a 64-bit chunk key, rather than trying to make it configurable."
...
This reverts commit 69f6f4ac37
2015-03-21 14:40:57 +01:00
ceeb8f70ce
Revert "Going back to building key by shifting instead of using bitfield."
...
This reverts commit 0d638f9837
2015-03-21 14:40:49 +01:00
0c619ebec7
Revert "Added typedef for ChunkKey."
...
This reverts commit 905ec27f47
2015-03-21 14:40:30 +01:00
f574563672
Revert "New, safer method of packing which makes careful use of casting to avoid problems with e.g. signed integer sign extension."
...
This reverts commit fd451be2dd
2015-03-21 14:40:11 +01:00
fd451be2dd
New, safer method of packing which makes careful use of casting to avoid problems with e.g. signed integer sign extension.
2015-03-21 08:48:45 +01:00
905ec27f47
Added typedef for ChunkKey.
2015-03-21 08:12:02 +01:00
0d638f9837
Going back to building key by shifting instead of using bitfield.
2015-03-21 08:05:58 +01:00
69f6f4ac37
Decided to always use a 64-bit chunk key, rather than trying to make it configurable.
2015-03-20 23:09:38 +01:00
6419c5827b
Added typedef for chunk key type.
2015-03-20 16:59:25 +01:00
8bd8f8ba7a
Work on using a bitfield to set up chunk key.
2015-03-20 15:48:46 +01:00
cd48c6f611
Made method const.
2015-03-19 23:08:35 +01:00
e82d6beca1
Replaced Vector3D with integer as key to map.
...
Chunks of voxel data are stored in a map, and it is quite common to need to search the map for a particular chunk. The key type used to be a Vector3D (i.e. the position of the chunk in 3D space) which makes conceptual sense but is relatively slow. Using a Vector3D as a key seems to have overhead, probably in terms of copying and performing comparisons. It seems to be significantly faster to use an integer as a key, so we now take the 3D position and pack it into a single integer by bitshifting.
Naturally this reduces the range of positions we can store - a 32-bit int can only encode 3 x 10-bit values, which means our volume can only be 1024 chunks in each direction (with a chunk often being 32x32x32 voxels). This should still be large enough for most uses, but an upcoming change will allow 64-bit keys to be used (at least on 64-bit builds) which then allows 21 bits of precision per component. This is so large that it's almost infinite for any practical purposes.
2015-03-15 09:32:42 +01:00
d305038c27
Replaced loop with fill.
2015-03-11 23:47:32 +01:00
741234e4a5
Small speed improvement by storing variables separately (rather than in Vector3D) to void construction/comparison overhead.
2015-03-09 23:52:56 +01:00
99d0a226c8
Tidying up.
2015-03-08 23:48:55 +01:00
72abcd8e9c
Chunks are now stored with unique_ptr rather than shared_ptr.
2015-03-08 23:30:12 +01:00
