Hi all,
For one of our projects which we are connecting to OSG, we use YCbCr
pixels where possible, via the GL_APPLE_ycbcr_422 OpenGL extension on
Mac OS X and/or the GL_MESA_ycbcr_texture OpenGL extension on Linux.
I see no support for these extensions in OSG, and I wonder if anyone
has considered it / put it into the too hard / don't care basket?
As far as adding support for these formats, AFAICT some additions
would be needed in osg::Image and osg::Texture2D and
osg::TextureRectangle.
Usage explanation: YCbCr textures allow optimal handling of pixel
data through some imaging pipelines, e.g. images captured from IIDC
cameras which are processed in the Luma domain and displayed in the
Luma & Chroma domain. Keeping the data in YCbCr format halves the
data required to be moved around (when compared to standard 32 bit
RGBA) and simplifies image processing. The GPU performs the final
YCbCr to RGB conversion.
Which is the preferred base for making a proposal in the form of a
patch? Latest release, or a specific cvs branch / revision?
Cheers,
Phil.
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