Hi Joel, I'm not sure this is useful to you, but here it is anyway. When I load shaders in my game I check to see if the computer I'm running on can handle them with code like this:
Progam* program = new Program; load vertex and fragment shaders here program->compileGLObjects(state); const int context = state->getContextID(); if(!(program->getPCP(context)->isLinked())) return false; Can you use this to detect your own shaders that don't work? -- Terry Welsh mogumbo 'at' gmail.com www.reallyslick.com > > Message: 6 > Date: Sat, 22 Oct 2011 13:23:14 +0200 > From: "Joel Graff" <[email protected]> > To: [email protected] > Subject: Re: [osg-users] flagging shaders with errors > Message-ID: <[email protected]> > Content-Type: text/plain; charset=UTF-8 > > Robert, > > It would appear I've not taken the time to really explain what I'm doing... > My apologies. :) > > I am presently building a shader development environment using OSG. Since > RenderMonkey can't really handle GLSL 140+ and the other options out there > are limited so far as GLSL is concerned, I decided I may as well write my own > shader dev tool. After hunting around for an API that I could use to manage > the 3D for me (I hadn't touched OpenGL since college and that was around > version 1.2), I settled on OSG. So far, it's been a really good experience, > though I suppose my posts to this forum may not have reflected that... > > Anyway, since the software I'm writing would lie at the heart of the shader > development process, there's an expectation that I'll be loading *lots* of > shaders with errors. :). In the end, I'm working toward a hotloading > solution, but having a callback checking the shader error logs and flagging > them for removal has proven a pretty useful mechanism thus far. > > Regarding the techniques you've proposed, I imagine I've missed something > obvious, but I don't see how to get at the scene graph from a draw callback > (or a realize callback, for that matter). That is, what you're proposing > makes sense. Actually, that's what I was trying to do (I think). My problem > is I couldn't figure out how to run my node visitor when I couldn't get a > reference to the scene graph's root node from inside the draw callback - not > without explicitly passing a reference when I construct the callback. That's > the thing I want to avoid, if possible. > > Thanks, > > Joel > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
