I still haven't given up on the idea of 'masking' the terrain pixel shading by the cockpit, since even a very simple mask easily makes the system 50% faster for me. Lauri has kindly given me some instructions on how to use the stencil buffer - so the idea was to start by filling the stencil buffer with a mask whenever there is an opaque pixel in the model.
In order to do so, I added this pass in front of the first pass declared in model-default.eff <pass> <stencil> <function>always</function> <value>1</value> <pass>replace</pass> </stencil> <alpha-test> <comparison>gequal</comparison> <value type="float">0.99</value> </alpha-test> <depth> <write-mask>false</write-mask> </depth> </pass> What happened is that I got the near camera rendered fine, but as good pretty much nothing from the far camera. I can insert the same code before the first pass declared in terrain-default.eff where it doesn't have any harmful side effects, the scene renders just fine. So the code as such isn't defunct. It seems I can insert no pass whatsoever before the first pass declared in model-default.eff without disabling the far camera. Which means there is something I don't understand at all. Is there absolute meaning to the passes, i.e. are all first passes done first, then the information obtained there is in the buffers and available for all other effects when the second passes run, or are passes only a means to establish relative order in the effect files? Why can't I add passes to model rendering, but I can to terrain, clouds or trees? I've tried to understand what is happening in CameraGroup.cxx, but I have no real clue - the whole context beats me, I don't even see where near or far camera are defined. Some explanations perhaps? Thanks, * Thorsten ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
