Re: [osg-users] How to generate fixed alpha value?

Hi Judy there's no such thins as pseudo-random generator in glsl itself but you can code it for ex:Linear Congruent Generators : https://math.stackexchange.com/questions/337782/pseudo-random-number-generation-on-the-gpu I haven't tested so give us experience feedbacks about this func

Re: [osg-users] Call for assistance: Migrating and updating tutorials

Hi Robert et al, As said earlier, I have started to experiment with GitHub pages. I discovered that it was hard to support both single-page and multi-page documents using markdeep (since its limited support for included documents). So having a single-page and multi-page document at the same

Re: [osg-users] Slow optimization and OpenFlight

Hi Robert, Yes, the model is ineffective in the sense that it has 150 000 separate triangles on the same level in the scene graph, that's the nature of basic usage of OpenFlight and I guess that's why the plugin applies an optimization of its own. But this could be optimized and merged much

[osg-users] How to generate fixed alpha value?

Hi all, Now??I have a flt. model with itself texture??but the internal format of the texture is RGB??not with ALPHA value??so the ALPHA TEST function is disabled. My question is how to generate some random fixed alpha value of the texture with the GLSL language??So that I can use the ALPHA

Re: [osg-users] Slow optimization and OpenFlight

HI Andreas, I haven't had a chance to dig further. One curious thing I noticed is that when I enabled verbose debug output there was lots of buffer objects being created and destroyed during the optimisation step. osg::Drawable now assigns VetextArrayState and VBO's by default for osg::Geometry

Re: [osg-users] Slow optimization and OpenFlight

Hi Robert, Yes, I tried it now and OSG 3.4 loads the model in the same time as 3.2.1 did. I found a few versions lying around here and concluded that something must have happened with the optimization between 3.5.1 where it works as before and 3.5.6 where it stalls. I'll keep digging but

Re: [osg-users] How to work with zip archives?

Hi Michael, It's probably a decade or more since I did anything with osgDB::Archive and associated plugins so I'm pretty rusty. Have a look at the osgarchive application in OpeScneneGraph/applications/osgarchive. It should be case of doing a osgDB::openArcive(..) then doing readNodeFile() etc