Commit Graph

440 Commits

Author SHA1 Message Date
Robert Bragg
060f1488e0 [test-cogl-tex-getset] Assume a premultiplied pixel format
test-cogl-tex-getset was assuming it was dealing with
COGL_PIXEL_FORMAT_RGBA_8888 but since merging the premultiplcation branch
the pixel format is actually COGL_PIXEL_FORMAT_RGBA_8888_PRE
2009-06-29 23:49:06 +01:00
Neil Roberts
20f3c173fe [test-shader] Fix some of the shaders to use premultiplied colors
Texture data is now in premultiplied format and the shader should
output a premultiplied color if the default blend mode is being
used. Shaders that directly manipulate the rgb values now
unpremultiply and premultiply again afterwards.
2009-06-24 12:05:19 +01:00
Emmanuele Bassi
0ec541282a [tests] Remove unneeded g_type_init()
Now that we can safely check for an uninitialized Clutter we
don't have side effects in calling one of the functions like
clutter_x11_enable_xinput(), which require to be called before
any other Clutter function.
2009-06-19 14:20:50 +01:00
Emmanuele Bassi
184df2a5fa [input] Rework input device API
The input device API is split halfway thorugh the backends in a very
weird way. The data structures are private, as they should, but most
of the information should be available in the main API since it's
generic enough.

The device type enumeration, for instance, should be common across
every backend; the accessors for device type and id should live in the
core API. The internal API should always use ClutterInputDevice and
not the private X11 implementation when dealing with public structures
like ClutterEvent.

By adding accessors for the device type and id, and by moving the
device type enumeration into the core API we can cut down the amount
of symbols private and/or visible only to the X11 backends; this way
when other backends start implementing multi-pointer support we can
share the same API across the code.
2009-06-19 13:12:05 +01:00
Matthew Allum
1aa8c89f2c [XInput] Get XInput working again.
Check for distros shipping out of sync header vs libXi,
call in g_type_init() in test-devices, fix ifdef so
XInput events get correctly selected.
2009-06-17 15:09:16 +01:00
Emmanuele Bassi
f8e9565482 [tests] Beautify the bouncing actor
The test-easing interactive demo for the high-level animation API
is a bit "flat". Instead of using a Rectangle actor we should
probably be using something more "interesting" -- like a CairoTexture
with a gradient.
2009-06-15 15:08:59 +01:00
Emmanuele Bassi
9799750c03 [animation] Rework animation chaining
In order to chain up animations using clutter_actor_animate() and
friends you have to use an idle handler that guarantees that the
main loop spins at least once after the animation pointer has been
detached from the actor.

This has several drawbacks, first and foremost the fact that the
slice of the main loop for the idle handler might be starved by
other operations, like redrawing. This inevitably leads to tricks
with priorities and the like, contributing to the overall complexity.

Instead, we should guarantee that the animation instance created by
clutter_actor_animate() is valid for the ::completed signal until
it reaches its default handler; after that, the animation is detached
from the actor and destroyed. This means that it's possible to
create a new animation after the first is complete by simply using
g_signal_connect_after().

This unfortunately makes it impossible to keep a reference to the
animation pointer attached to the actor by using g_object_ref(); a
way to "fix" this would be to have a clutter_animation_attach()
and a clutter_animation_detach() pair of methods that allow attaching
any animation to an actor. This might overcomplicate what it is
the simple animation API, though, so it's currently not implemented
and left for future versions.

The test-easing interactive demo has been modified to show how
the animation queuing works by adding a command line switch that
recenters the animated actor once the first animation has ended.
2009-06-15 11:49:33 +01:00
Emmanuele Bassi
0415d62d40 Disable single header inclusion for GLib
In order to be ready for the next major version of GLib we need to
disable single header inclusion by using the G_DISABLE_SINGLE_INCLUDES
define in the build process.
2009-06-15 11:29:37 +01:00
Emmanuele Bassi
abac520f0c [tests] Add unit for Clone behaviour
A clone actor should not modify the state of its source, so we need
to check that it's not breaking any invariant.
2009-06-15 11:29:37 +01:00
Neil Roberts
0dfc1dd284 [test-cogl-tex-tile] Fix breakages from ClutterFixed removal and timelines
The test has been broken since the change to use floats instead of
fixed point because it was passing degrees to sin and cos but they
expect radians.

It was further broken since the timeline changes because it was
directly using the parameter of the new-frame signal as a frame number
but it now represents the elapsed time.
2009-06-12 11:05:26 +01:00
Emmanuele Bassi
6414adbfeb [tests] Fix the cogl_polygon() interactive test
We need to premultiply the alpha, and we also need to change the
frame painting to use the frame-less Timeline.
2009-06-11 16:59:50 +01:00
Emmanuele Bassi
a8fc4e1694 [tests] Fix the VBO interactive test
We need to fix the VBO premultiplication; we also do not need to
forcibly queue a redraw in an idle handler: the timeline and the
master clock will do that for us.
2009-06-11 16:53:52 +01:00
Emmanuele Bassi
19f112f9bc [tests] Update test-actors (and clones)
The test-actors test (and its clones, test-actor-clone and
test-paint-wrapper) was written a long time ago for a different API
and has been tweaked to bits. We should probably have something a
little bit more complicated, but at least we should not use semantics
and coding patterns from Clutter 0.2, otherwise we won't be testing
anything except that Clutter 0.2 worked.
2009-06-11 16:26:02 +01:00
Robert Bragg
96827db740 Bug 1406 - Handling of premultiplication in clutter
Merge branch 'premultiplication'

[cogl-texture docs] Improves the documentation of the internal_format args
[test-premult] Adds a unit test for texture upload premultiplication semantics
[fog] Document that fogging only works with opaque or unmultipled colors
[test-blend-strings] Explicitly request RGBA_888 tex format for test textures
[premultiplication] Be more conservative with what data gets premultiplied
[bitmap] Fixes _cogl_bitmap_fallback_unpremult
[cogl-bitmap] Fix minor copy and paste error in _cogl_bitmap_fallback_premult
Avoid unnecesary unpremultiplication when saving to local data
Don't unpremultiply Cairo data
Default to a blend function that expects premultiplied colors
Implement premultiplication for CoglBitmap
Use correct texture format for pixmap textures and FBO's
Add cogl_color_premultiply()
2009-06-11 16:00:28 +01:00
Robert Bragg
41579eb3c9 [test-premult] Adds a unit test for texture upload premultiplication semantics
cogl_texture_new_from_data lets you specify a source format for the users given
data, and an internal format which the user wants the GPU to see. This unit
test verifies that the users data is premultiplied, un-premultiplied or
left alone for a number of (source format, internal format) pairs.

cogl_texture_set_region allows specifying a source format, and the internal
format is determined from the texture being updated. As above we test
a number of format pairs and check Cogl is converting data correctly.

The test verifies that if the user allows COGL_FORMAT_ANY for the
internal_format then by default Cogl will choose a premultipled format for
RGBA textures.

Note: Currently this only tests cogl_texture_new_from_data and
cogl_texture_set_region, we should also test cogl_texture_new_from_file,
cogl_texture_new_from_bitmap and cogl_texture_new_from_foreign.
2009-06-11 14:17:53 +01:00
Robert Bragg
70636b4815 [fog] Document that fogging only works with opaque or unmultipled colors
The fixed function fogging provided by OpenGL only works with unmultiplied
colors (or if the color has an alpha of 1.0) so since we now premultiply
textures and colors by default a note to this affect has been added to
clutter_stage_set_fog and cogl_set_fog.

test-depth.c no longer uses clutter_stage_set_fog for this reason.

In the future when we can depend on fragment shaders we should also be
able to support fogging of premultiplied primitives.
2009-06-11 14:17:53 +01:00
Robert Bragg
80aceda9bb [test-blend-strings] Explicitly request RGBA_888 tex format for test textures
This test assumes that the textures will be stored internally with exactly
the color given so that specific texture combining arithmetic can be
tested. Using COGL_PIXEL_FORMAT_ANY allows Cogl to internally premultiply
the textures, so we have to explicitly request an unmultiplied format.
2009-06-11 14:17:53 +01:00
Owen W. Taylor
c3448314d5 Default to a blend function that expects premultiplied colors
Many operations, like mixing two textures together or alpha-blending
onto a destination with alpha, are done most logically if texture data
is in premultiplied form. We also have many sources of premultiplied
texture data, like X pixmaps, FBOs, cairo surfaces. Rather than trying
to work with two different types of texture data, simplify things by
always premultiplying texture data before uploading to GL.

Because the default blend function is changed to accommodate this,
uses of pure-color CoglMaterial need to be adapted to add
premultiplication.

gl/cogl-texture.c gles/cogl-texture.c: Always premultiply
  non-premultiplied texture data before uploading to GL.

cogl-material.c cogl-material.h: Switch the default blend functions
  to ONE, ONE_MINUS_SRC_ALPHA so they work correctly with premultiplied
  data.

cogl.c: Make cogl_set_source_color() premultiply the color.

cogl.h.in color-material.h: Add some documentation about
  premultiplication and its interaction with color values.

cogl-pango-render.c clutter-texture.c tests/interactive/test-cogl-offscreen.c:
  Use premultiplied colors.

http://bugzilla.openedhand.com/show_bug.cgi?id=1406

Signed-off-by: Robert Bragg <robert@linux.intel.com>
2009-06-11 14:17:52 +01:00
Emmanuele Bassi
61c45da90a Bug 1637 - Master clock improvements
Merge branch 'master-clock-updates'

* master-clock-updates: (22 commits)
  Change the paint forcing on the Text cache text
  [timelines] Improve marker hit check and don't fudge the delta
  Revert "[timeline] Don't clamp the elapsed time when a looping tl reaches the end"
  [tests] Don't add a newline to the end of g_test_message calls
  [test-timeline] Add a marker at the beginning of the timeline
  [timeline] Don't clamp the elapsed time when a looping tl reaches the end
  [master-clock] Throttle if no redraw was performed
  [docs] Update Clutter's API reference
  Force a paint instead of calling clutter_redraw()
  Fix clutter_redraw() to match the redraw cycle
  Run the repaint functions inside the redraw cycle
  Remove useless manual timeline ticking
  Move elapsed-time calculations into ClutterTimeline
  Limit the frame rate when not syncing to VBLANK
  Decrease the main-loop priority of the frame cycle
  Avoid motion-compression in test-picking test
  Compress events as part of the frame cycle
  Remove stage update idle and do updates from the master clock
  Call g_main_context_wakeup() when we start running timelines
  Remove unused msecs_delta member
  ...
2009-06-11 13:01:34 +01:00
Emmanuele Bassi
cd08dc6327 [tests] Fix a segfault in the binding-pool test
The commit that moved all the properties to floats missed the
test-binding-pool interactive test.
2009-06-11 12:36:41 +01:00
Emmanuele Bassi
e60584ea6f Change the paint forcing on the Text cache text
The changes in the master clock and the repaint cycle have been
changed, and broke the way the test for the Text actor cache of
PangoLayouts forces a redraw.

We have to call clutter_actor_paint() on the Stage embedding the
Text actor we want to test; this is kinda fugly because if the
Layout has changed it will end up causing a reallocation cycle
in the middle of the Text actor paint. Since it's a test case,
and since forcing redraws is a bit of a hack as well, we can
close both our eyes on that.
2009-06-11 12:23:09 +01:00
Neil Roberts
9021aa2909 Revert "[timeline] Don't clamp the elapsed time when a looping tl reaches the end"
This reverts commit 9c5663d671.

The patch was causing problems for applications that expect the
elapsed_time to be at either end of the timeline when the completed
signal is fired. For example test-behave swaps the direction of the
timeline in the completed handler but if the time has overflowed the
end then the timeline would only take a short time to get back the
beginning. This caused the animation to just vibrate around the
beginning.
2009-06-11 11:46:41 +01:00
Neil Roberts
6bb5b3a13e [tests] Don't add a newline to the end of g_test_message calls
Two of the timeline tests were calling g_test_message and adding a \n
so the output looked odd.
2009-06-11 11:38:49 +01:00
Neil Roberts
19cbb30783 [test-timeline] Add a marker at the beginning of the timeline
The beginning of the timeline needs special treatment to detect a
marker so it should have one in the conformance test.
2009-06-11 11:32:41 +01:00
Neil Roberts
9c5663d671 [timeline] Don't clamp the elapsed time when a looping tl reaches the end
The new-frame signal of a timeline was previously guaranteed to be
emitted with the elapsed_time set to the end before it emits the
completed signal. This doesn't necessarily make sense for looping
timelines because it would cause the elapsed time to be clamped to a
slightly off value whenever the timeline restarts. This patch makes it
perform the wrap around before emitting the new-frame signal so that
the elapsed time always corresponds to the time elapsed since the
timeline was started.

Additionally it no longer fudges the msecs_delta property to make the
marker check work so clutter_timeline_get_delta will always return the
wall clock time since the last frame.
2009-06-10 17:47:33 +01:00
Owen W. Taylor
287d4f76ec Remove useless manual timeline ticking
The master clock now works fine whether or not there are any stages,
so in the timeline conformance tests don't need to set up their
own times.

Set CLUTTER_VBLANK=none for the conformance tests, which in addition
to removing an test-environment dependency, will result in the ticking
for timeline tests being throttled to the default frame rate.

http://bugzilla.openedhand.com/show_bug.cgi?id=1637

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-06-09 15:03:56 +01:00
Owen W. Taylor
6705ce6c6a Move elapsed-time calculations into ClutterTimeline
Instead of calculating a delta in the master clock, and passing that
into each timeline, make each timeline individually responsible for
remembering the last time and computing the delta.

This:

 - Fixes a problem where we could spin infinitely processing
   timeline-only frames with < 1msec differences.
 - Makes timelines consistently start timing on the first frame;
   instead of doing different things for the first started timeline
   and other timelines.
 - Improves accuracy of elapsed time computations by avoiding
   accumulating microsecond => millisecond truncation errors.

http://bugzilla.openedhand.com/show_bug.cgi?id=1637

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-06-09 15:03:56 +01:00
Owen W. Taylor
dcd8d28314 Limit the frame rate when not syncing to VBLANK
clutter-master-clock.c clutter-master-clock.h: When the
  SYNC_TO_VBLANK feature is not available, wait for 1/frame_rate
  seconds since the start of the last frame before drawing the next
  frame. Add _clutter_master_clock_start_running() to abstract
  the usage of g_main_context_wakeup()

clutter-stage.c: Add _clutter_master_clock_start_running()

clutter-main.c: Update docs for clutter_set_default_frame_rate()
  clutter_get_default_frame_rate() to no longer talk about timeline
  frame rates.

test-text-perf.c test-text.c: Set a frame rate of 1000fps so that
  frame-rate limiting doesn't affect the result.

http://bugzilla.openedhand.com/show_bug.cgi?id=1637

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-06-09 15:03:56 +01:00
Owen W. Taylor
fc83e36477 Avoid motion-compression in test-picking test
Using clutter_stage_get_actor_at_pos() rather than synthesizing
events; the synthesized events were being compressed, so we were
only tesitng one pick per frame.

http://bugzilla.openedhand.com/show_bug.cgi?id=1637

Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>
2009-06-09 15:03:56 +01:00
Emmanuele Bassi
33f5fe73b3 [stage] Rename fullscreen methods
The clutter_stage_fullscreen() and clutter_stage_unfullscreen() are
a GDK-ism. The underlying implementation is already using an accessor
with a boolean parameter.

This should take the amount of collisions between properties, methods
and signals to zero.
2009-06-09 14:07:35 +01:00
Emmanuele Bassi
7c89a0ccfa [stage] Rename :fullscreen to :fullscreen-set
The :fullscreen property is very much confusing as it is implemented.
It can be written to a value, but the whole process might fail. If we
set:

  g_object_set (stage, "fullscreen", TRUE, NULL);

and the fullscreen process fails or it is not implemented, the value
will be reset to FALSE (if we're lucky) or left TRUE (most of the
times).

The writability is just a shorthand for invoking clutter_stage_fullscreen()
or clutter_stage_unfullscreen() depending on a boolean value without
using an if.

The :fullscreen property also greatly confuses high level languages,
since the same symbol is used:

  - for a method name (Clutter.Stage.fullscreen())
  - for a property name (Clutter.Stage.fullscreen)
  - for a signal (Clutter.Stage::fullscreen)

For these reasons, the :fullscreen should be renamed to :fullscreen-set
and be read-only. Implementations of the Stage should only emit the
StageState event to change from normal to fullscreen, and the Stage
will automatically update the value of the property and emit a notify
signal for it.
2009-06-09 14:07:35 +01:00
Emmanuele Bassi
41e85f3073 introspection-friendly ClutterEvent accessors
ClutterEvent is not really gobject-introspection friendly because
of the whole discriminated union thing. In particular, if you get
a ClutterEvent in a signal handler, you probably can't access the
event-type-specific fields, and you probably can't call methods
like clutter_key_event_symbol() either, because you can't cast the
ClutterEvent to a ClutterKeyEvent.

The cleanest solution is to turn every accessor into ClutterEvent
methods, accepting a ClutterEvent* and internally checking the event
type.

Fixes bug:

  http://bugzilla.openedhand.com/show_bug.cgi?id=1585
2009-06-08 12:05:20 +01:00
Emmanuele Bassi
d8459b0a32 [tests] Clarify the numbers 2009-06-08 10:59:22 +01:00
Emmanuele Bassi
2ebe36cf08 [tests] The ::focus-in signal was renamed ::key-focus-in
The test-events interactive test is still using the old name.
2009-06-08 10:58:20 +01:00
Robert Bragg
a87f6f32a6 [test-blend-strings] Fix a silly off by one that meant the test couldn't fail
The test was quiting after the 2nd frame but it should be the third frame because
the test doesn't actually check results until the third frame due to the workaround
for drivers with broken glReadPixels.

(When first written the test would have been verified with the
clutter_main_quit() commented out which gives visual feedback of what the
test does, so the off by one would have snuck in just before uncommenting
and pushing.)
2009-06-07 21:01:45 +01:00
Emmanuele Bassi
9691827b5b [texture] Fix error reporting on ::load-finished
The load-finished signal has a GError* argument which is meant to
signify whether the loading was successful. However many of the
places in ClutterTexture that emit this signal directly pass their
'error' variable which is a GError** and will be NULL or not
completely independently of whether there was an error. If the
argument was dereferenced it would probably crash.

The test-texture-async interactive test case should also verify
that the ::load-finished signal is correctly emitted.

Fixes bug:

  http://bugzilla.openedhand.com/show_bug.cgi?id=1622
2009-06-06 16:13:41 +01:00
Robert Bragg
dea7f9b7d3 [test-conformance] we were calling clutter_init with un-initialized arguments
This ensure we initialize shared_state->arg{c,v}_addr before calling
clutter_init
2009-06-05 17:18:32 +01:00
Neil Roberts
3ee093e356 Merge branch 'timeline-no-fps' into 1.0-integration 2009-06-05 12:20:41 +01:00
Neil Roberts
54d8aadf1d [cogl] Move the texture filters to be a property of the material layer
The texture filters are now a property of the material layer rather
than the texture object. Whenever a texture is painted with a material
it sets the filters on all of the GL textures in the Cogl texture. The
filter is cached so that it won't be changed unnecessarily.

The automatic mipmap generation has changed so that the mipmaps are
only generated when the texture is painted instead of every time the
data changes. Changing the texture sets a flag to mark that the
mipmaps are dirty. This works better if the FBO extension is available
because we can use glGenerateMipmap. If the extension is not available
it will temporarily enable automatic mipmap generation and reupload
the first pixel of each slice. This requires tracking the data for the
first pixel.

The COGL_TEXTURE_AUTO_MIPMAP flag has been replaced with
COGL_TEXTURE_NO_AUTO_MIPMAP so that it will default to
auto-mipmapping. The mipmap generation is now effectively free if you
are not using a mipmap filter mode so you would only want to disable
it if you had some special reason to generate your own mipmaps.

ClutterTexture no longer has to store its own copy of the filter
mode. Instead it stores it in the material and the property is
directly set and read from that. This fixes problems with the filters
getting out of sync when a cogl handle is set on the texture
directly. It also avoids the mess of having to rerealize the texture
if the filter quality changes to HIGH because Cogl will take of
generating the mipmaps if needed.
2009-06-04 19:03:40 +01:00
Emmanuele Bassi
0187bb3965 [actor] Use flags to control allocations
Instead of passing a boolean value, the ::allocate virtual function
should use a bitmask and flags. This gives us room for expansion
without breaking API/ABI, and allows to encode more information to
the allocation process instead of just changes of absolute origin.
2009-06-04 16:30:31 +01:00
Emmanuele Bassi
0d5e17ecd1 [units] Rework Units into logical distance value
Units as they have been implemented since Clutter 0.4 have always been
misdefined as "logical distance unit", while they were just pixels with
fractionary bits.

Units should be reworked to be opaque structures to hold a value and
its unit type, that can be then converted into pixels when Clutter needs
to paint or compute size requisitions and perform allocations.

The previous API should be completely removed to avoid collisions, and
a new type:

        ClutterUnits

should be added; the ability to install GObject properties using
ClutterUnits should be maintained.
2009-06-04 16:30:31 +01:00
Emmanuele Bassi
046e571bae Remove usage of Units and macros
The ClutterUnit and relative macros should not be used when dealing
with pixels -- which is to say, all the time when inside Clutter.
2009-06-04 16:30:30 +01:00
Neil Roberts
9c7afe0c5b [timeline] Remove the concept of frames from timelines
Timelines no longer work in terms of a frame rate and a number of
frames but instead just have a duration in milliseconds. This better
matches the working of the master clock where if any timelines are
running it will redraw as fast as possible rather than limiting to the
lowest rated timeline.

Most applications will just create animations and expect them to
finish in a certain amount of time without caring about how many
frames are drawn. If a frame is going to be drawn it might as well
update all of the animations to some fraction of the total animation
rather than rounding to the nearest whole frame.

The 'frame_num' parameter of the new-frame signal is now 'msecs' which
is a number of milliseconds progressed along the
timeline. Applications should use clutter_timeline_get_progress
instead of the frame number.

Markers can now only be attached at a time value. The position is
stored in milliseconds rather than at a frame number.

test-timeline-smoothness and test-timeline-dup-frames have been
removed because they no longer make sense.
2009-06-04 13:21:57 +01:00
Emmanuele Bassi
b6f1322e07 [tests] Add ClutterColor conformance tests
Add a conformance test unit for the to_string() and from_string()
methods.
2009-06-01 18:43:47 +01:00
Emmanuele Bassi
c759aeb6a7 Uniformly use floats in Actor properties
All the underlying implementation and the public entry points have
been switched to floats; the only missing bits are the Actor properties
that deal with positioning and sizing.

This usually means a major pain when dealing with GValues and varargs
functions. While GValue will warn you when dealing with the wrong
conversions, varags will simply die an horrible (and hard to debug)
death via segfault. Nothing much to do here, except warn people in the
release notes and hope for the best.
2009-06-01 14:57:18 +01:00
Emmanuele Bassi
9557328e4e Merge branch 'master' into 1.0-integration
* master:
  [test-text-perf] Use queue_redraw instead of painting the stage directly
  [actor] In paint when opacity == 0, clear the queued_redraw flag
2009-05-28 15:53:56 +01:00
Neil Roberts
d960ce46e5 [test-text-perf] Use queue_redraw instead of painting the stage directly
If it doesn't queue a redraw and allow the backend to clear and swap
the buffers then the results will be skewed because it is not
predictable when the driver will actually render the scene.
2009-05-28 15:31:05 +01:00
Robert Bragg
be826ed4e7 [cogl vertex buffers] Give indices a CoglHandle so they are shareable
Previously indices were tightly bound to a particular Cogl vertex buffer
but we would like to be able to share indices so now we have
cogl_vertex_buffer_indices_new () which returns a CoglHandle.

In particular we could like to have a shared set of indices for drawing
lists of quads that can be shared between the pango renderer and the
Cogl journal.
2009-05-28 13:27:54 +01:00
Robert Bragg
605243d952 [cogl] renamed cogl_enable_* to cogl_set_*_enabled + added getters
cogl_enable_depth_test and cogl_enable_backface_culling have been renamed
and now have corresponding getters, the new functions are:
  cogl_set_depth_test_enabled
  cogl_get_depth_test_enabled
  cogl_set_backface_culling_enabled
  cogl_get_backface_culling_enabled
2009-05-28 02:43:36 +01:00
Robert Bragg
59bd824404 [vbo indices] tweak add_indices api to return an id and add delete_indices api
Originally cogl_vertex_buffer_add_indices let the user pass in their own unique
ID for the indices; now the Id is generated internally and returned to the
caller.
2009-05-28 02:43:35 +01:00