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21 commits

Author SHA1 Message Date
curt
d5a2533411 Fixed a bug in the tile pager / caching / management system that caused
a crash when relocating to a new airport.  Pending work from the old
area is now just completed as normal, rather than trying to empty the various
queues in their various stages when can lead to many problems in a threaded
environment.
2001-05-30 18:21:03 +00:00
curt
2afcbb4bc8 We can't remove ssg branches in the threaded tile page because if we happen
to have attached an ssg loaded object to this branch, then plib will remove
it and all it's states (and textures) which will call opengl api commands
which will crash the program if run from a separate thread from the main render
thread.
2001-05-20 06:49:06 +00:00
curt
34854ab2af Threaded tile paging:
- model loading deferred to primary thread
- tile removal deferred to paging thread
- other tweaks and rearrangments.

Airport signs
- first stab at some support for adding taxiway and runway signs.  This
  is non-optimal, but I'm under the gun for a demo.
2001-05-19 16:59:43 +00:00
curt
a0d50000ba Modifications to coordinate with recent changes in simgear. 2001-05-15 22:30:39 +00:00
curt
a29cb28e93 Tweaks to the tile pager so it waits for a signal from the main thread before
loading the next tile.  This allows the main thread to "pace" the tile loader
so it consumes fewer resources.
2001-04-14 03:11:39 +00:00
curt
b0b6c34249 Initial stab at a threaded tile loader contributed by Bernie Bright.
He writes:

Here are the final changes to add threads to the tile loading.  All the
thread related code is in the new FGTileLoader class.

./configure.in
./acconfig.h
Added --with-threads option and corresponding ENABLE_THREADS
definition.  The default is no threads.

./src/Scenery/tilemgr
Removed load_queue and associated references.  This has been replaced by
a new class FGTileLoader in FGNewCache.
Made the global variable global_tile_cache a member.
schedule_needed(): removed global_tile_cache.exists() tests since
sched_tile() effectively repeats the test.
initialize_queue(): removed code that loads tiles since this is now
performed by FGTileLoader.
update(): ditto

./src/Scenery/newcache
Added new class FGTileLoader to manage tile queuing and loading.
tile_map typedefs are private.
exists() is a const member function.
fill_in(): deleted
load_tile(): added.

./src/Scenery/FGTileLoader
The new threaded tile loader.  Maintains a queue of tiles waiting to be
loaded and an array of one or more threads to load the tiles.  Currently
only a single thread is created.  The queue is guarded by a mutex to
synchronize access.  A condition variable signals the thread when the
queue is non-empty.

CLO: I made a few tweaks to address a couple issues, hopefully what we
have is solid, but now we kick it out to the general public to see. :-)
2001-04-11 02:47:15 +00:00
curt
2aca8ca2cf Irix MipsPro patches and fixes. 2001-04-02 02:59:31 +00:00
curt
191bb3956a Updates from Bernie Bright to massage tile loading around to make it
slightly more conducive to future threading.
2001-03-29 01:42:31 +00:00
curt
96a9152b02 Irix MIPS patches. 2001-03-26 18:22:31 +00:00
curt
f1b1077d93 More fg -> sg namespace changes in simgear. 2001-03-25 14:20:12 +00:00
curt
182fd42b40 SG-ified logstream. 2001-03-24 06:03:11 +00:00
curt
5958389026 FG_ to SG_ namespace changes. 2001-03-23 22:59:18 +00:00
curt
576432ec75 David Megginson writes:
FGOptions is history, and the modules are (starting) to use the property
manager directly.  Let me know if I left any files out.

Inevitably, there will be some problems with broken options, etc.,
that I haven't found in my tests, but I'll try to fix them quickly.
We also need to stress that the property names currently in use are
not stable -- we need to reorganize them a bit for clarity.
2001-01-13 22:06:39 +00:00
curt
95d6d93bed Renamed FGBucket -> SGBucket. 2000-12-13 20:36:04 +00:00
curt
65087c6b56 Removed tilecache.cxx tilecache.hxx.
Tweaks to ground lighting.
2000-12-08 17:28:05 +00:00
curt
5fecec2bba More night ground lighting tweaks. 2000-12-06 22:16:12 +00:00
curt
40d68c5627 Tweaks to get lights to fade in quantity-wise as well as brightness-wise. 2000-12-06 13:57:29 +00:00
curt
a775392e31 Bring lights in in stages as it get's darker. 2000-12-04 23:25:05 +00:00
curt
f14e155533 Tweaks to ground lighting infrastructure. 2000-12-04 22:36:18 +00:00
curt
d3c4018baa Started laying out the infrastructure for handling lighting.
Started experimenting with ground lighting.
2000-12-04 05:24:38 +00:00
curt
39632b90b8 Rewrote the tile scheme to use a "map" structure rather than "vector"
structure.  The new approach is simpler, more flexible, and more dynamics.
We can now dynamically size the tile cache up and down.  Also, the range
of tiles to load is now dependent on visibility and is calculated to always
bring in enough tiles.
2000-12-03 20:15:46 +00:00