1) they use direct link to texture
-> this is already handle by current plugin : OK
2) they defined colors with only 3 color components
-> it leads to a crash when trying to acces to the fourth component
I fixed that
3) they contain empty primitive lists
-> reading is ok, but osgviewer crashes when trying to display the geometries
The reason is that osg assume that DrawElementsare never empty (blunt acces to DrawElements.front() in PrimitiveSet.cpp)
I corrected this (on the plugin side), but I wonder :
Is it the responsability of plugins to create non empty DrawElements, or of osg core not to crash when they occur ?
If the responsability is on the osg core side, I can submit a patch to PrimitiveSet.cpp regarding that aspect.
4) they use a material binding scheme not supported by the plugin
->I've implemented a mechanism to handle this binding scheme
You will also find in the patch an example of these evil dae and comments on the offending elements.
They seems to be produced by ComputaMaps (www.computamaps.com)
They load well in Google Earth
"
- correction to writeFace : the fourth point was defined with an incorrect code (http://www.autodesk.com/techpubs/autocad/acad2000/dxf/3dface_dxf_06.htm)
- if no layer name was found, an empty string was used, with is incorrect according to dxf specifications and was rejected by Autodesk DWG TrueView
- the plugin was writting polygons and triangles as LINE, as if PolygonMode GL_LINE was active, and didn't use 3DFACE primitive.
I changed this behaviour to write 3DFACE as default, and LINE when PolygonMode GL_LINE is active.
when reading back the file with osg, the result is now consistent with the source
Tested with osg plugin, FME (Safe software), Autodesk DWG TrueView
"
Here's a summary:
* Uses a separate ZIP file handle per thread
* Maintains a single shared (read-only) index, created the first time through
* Stress-tested with the DatabasePager using 24 threads under osgEarth
I also updated the member variables to use OSG's leading-underscore convention."
which simply set by default the internal pixel format to GL_RGB32F_ARB where appropriate.
In the current version there's a comment saying that the plugin set it to GL_RGB8 (even when reading from float) to support old graphics cards,
but the comment dates back to 2004...
What's more I believe that it's correct to expect a floating texture format if you're loading an hdr image.
It was quite troublesome for us to discover why our background image wasn't showing hdr data...
In case you accept the submission, I've removed the comment as it would be misleading to leave it there."
(http://gta.nongnu.org). This allows to read and write floating point
image data. Unlike other formats, GTA also allows very good compression
ratios for floating point data. The compression method can be selected
with the COMPRESSION option of the plugin.
"
OpenSceneGraph-3.0.1/src/osgPlugins/xine/video_out_rgb.c:2772:25:
error: ?video_driver_class_t? has no member named ?get_identifier?
OpenSceneGraph-3.0.1/src/osgPlugins/xine/video_out_rgb.c:2773:25:
error: ?video_driver_class_t? has no member named ?get_description?
This has been reported on Gentoo: https://bugs.gentoo.org/397643
The relevant commit to the xine-lib repository is
http://anonscm.debian.org/hg/xine-lib/xine-lib-1.2/diff/806b590a4d38/src/xine-engine/video_out.h
This change addresses the issue. I'm sending the full modified file as
an attachment. It is based on the 3.0.1 release of OSG. I'll also paste
a diff below. You will find a colorized view in the Gentoo bugzilla.
The xine-lib API changed in the following way: the identifier and
description members are now "const char*" strings instead of "char*
(*)(video_driver_class_t*)" getter function. As the functions in the osg
plugin will always simply return a string literal, without accessing
their argument, it is safe to simply call them with a NULL argument and
use the returned string. This makes it easy to support both API
versions. When you drop support for older xine one day, you might want
to move the string literals to the assignment, getting rid of the
functions in the process.
The modified code compiles for me. I'm not sure how to test it, as I've
only got OSG around in order to build (and hopefully one day even use)
Flightgear.
I'm assigning my copyright in this change to the osg project leads.
"
I have attached a correction to daeRTransforms.cpp based on trunk at [12892] which corrects this problem.
This is the changed section:
Code:
if (scale.x() == scale.y() && scale.y() == scale.z())
{
// This mode may be quicker than GL_NORMALIZE, but ONLY works if x, y & z components of scale are the same.
ss->setMode(GL_RESCALE_NORMAL, osg::StateAttribute::ON|osg::StateAttribute::OVERRIDE);
}
else
{
// This mode may be slower than GL_RESCALE_NORMAL, but does work if x, y & z components of scale are not the same.
ss->setMode(GL_NORMALIZE, osg::StateAttribute::ON|osg::StateAttribute::OVERRIDE);
}"
the global locale was generating bad dot files. Specifically, the node
numbers had comma separators in them (like 1,234 rather than 1234).
The attached file simply forces the stringstreams used to build up the
dot file to use the "C" locale."
parameter in osg::Image. To support this Image::setData(..) now has a new optional rowLength parameter which
defaults to 0, which provides the original behaviour, Image::setRowLength(int) and int Image::getRowLength() are also provided.
With the introduction of RowLength support in osg::Image it is now possible to create a sub image where
the t size of the image are smaller than the row length, useful for when you have a large image on the CPU
and which to use a small portion of it on the GPU. However, when these sub images are created the data
within the image is no longer contiguous so data access can no longer assume that all the data is in
one block. The new method Image::isDataContiguous() enables the user to check whether the data is contiguous,
and if not one can either access the data row by row using Image::data(column,row,image) accessor, or use the
new Image::DataIterator for stepping through each block on memory assocatied with the image.
To support the possibility of non contiguous osg::Image usage of image objects has had to be updated to
check DataContiguous and handle the case or use access via the DataIerator or by row by row. To achieve
this a relatively large number of files has had to be modified, in particular the texture classes and
image plugins that doing writing.
the type of the virtual function ImageStream::getCurrentTime(), and with this fixing a compile and runtime error.
Changed time variables all to use doubles rather than float to be consist with the change to getCurrentTime().
the required header mathematics.h is not being included explicitly.
I have just included it, and verified that this also works with current
version 0.7, since the header is also available there."
"From David Glenn and Paul Martz. This change adds support for the NO_COLOR bit in the Vertex records' flags field. If NO_COLOR is set, and PACKED_COLOR is not set, the code will now properly default to using the face color at those vertices. See the osg-users thread "Open Flight characteristic not reflected in the current OSG" for more info."
and
"In consultation with David Glenn, it appears we needed to change a second file to correct how OpenFlight handles transparency when vertices have NO_COLOR. "
I don’t have access to an OSX or Linux dev machine to make the changes required to the quick time plugin. This plugin will just default to returning 0."
Added support into .vnc plugin for passing in the keywords "swap", "RGB", "RGBA", "BGR", "BGRA" as OptionString values to allow .p3d presentations to control
whether the pixelformat should be swapped or set to a specific format.
