Note that firstly it always returns the positive real quaternion (positive w)
Note also that it will sometimes slightly differ from the results of the other methods because it assumes that the input matrix really is a rotation matrix - if it isn't, e.g. because of rounding error, then the output quaternion will be very slightly different. For example, the test matrix
0 1 0 0
1 0 0 0
0 0 0.999999 0
0 0 0 1
will return 0.707107 0.707107 0.0005033 0.0005033
whereas the previous methods return 0.707107 0.707107 0.0 0.0
However, since quaternions are rotations, the meaning of how to convert a matrix that isn't a rotation is a little unclear..."
setFactorAndUnitMultipliersUsingBestGuessForDriver() static methods to
osg::PolygonOffset to help implement workarounds for lack of portablity of
settings between different hardware.
"If a texture is used that is not a multiple of four, and compression
was requested through the texture's internal format, the texture's
internal format reverts to a non-compressed type and a NOTICE is given.
At present, compressed textures must have a multiple of four in each
dimension."
"Attached is some fixes for Image::readImageFromCurrentTexture. It was
failing when used with a new Image object (some of the fields were
not set before they were used, and some were set to the wrong values).
A new optional parameter was added to give the desired data type, which
defaults to GL_UNSIGNED_BYTE, so programs should only need a recompile
to work properly."
textures. Near the top of the function that implements texture
subloading, osg::Texture::applyTexImage2D_subload(), the local variable
compressed_image examines the _image's_ pixel format to see if it is
compressed. However, further on, in calls to getCompressedSize() the
_texture's_ pixel format is used. In my application's Texture2D class,
I use osg::Texture::USE_ARB_COMPRESSION to
osg::Texture2D::setInternalFormatMode(), which causes the internal format
to become one of the generic ARB_COMPRESSED types, which do not have a
specific size. Thus the recent warning message added to
osg::Texture::getCompressedSize() is triggered. The correct behavior is
to use the format mode from the Image class instead of the Texture class
within the subload implementation, and then the size is calculated
correctly."
based on the internal format. There is similar code in the Texture class
but it does not account for the ARB types. I modified the Texture class
implementation to show a warning when an incomplete internal format is
used to calculate the image size."
when the binding mode changes, thereby avoiding uncessary calls to dirtyDisplayList.
Note, from Robert Osfield, moved bodies of set*Binding() into Geometry.cpp to avoid
clutter in the header.
that removeChild(Node*), removeChild(uint) and equivilant Geode methods are
now inline methods, not designed to be overriden, and seperated out the
multiple remove method to be called removeChildren(uint, uint) which is
now the only virtual method. There removeChildren is now the method to
override in subclasses.
This reorganisation requires some call code to be rename removeChild usage
to removeChildren.
osg::DisplaySettings class. OsgCameraGroup will now read the setting
from the DisplaySettings instead of hardcoding the value. I added the
following commandline option to be able to set the multisample value:
--samples <num>
One thing to note, OsgCameraGroup would previously check if the
computer is an SGI and set multisample to 4. I retained this check in
DisplaySettings to be backwards compatible."
an invalid bounding sphere if it hasn't seen a cull traversal yet. It
depends on _firstTimeToSetEyePoint, which is initially true, then false
after a cull. There might be a better way? If so, let me know.
This change does resolve the issue I had encountered with auto scale to
screen and incorrect culling."
