Hi. Nice to see my shader brought up some discussion :)
First, Vivian, I tried to see your screenshots, but the link wasn't working (server down or something?) so I cannot comment them right now. And I didn't mean the bug with sun reflection on the water being misplaced from the real shader, but sometimes it seems like the sunset effect on the (non shader) skydome is someting like 90 degrees to the left. I'm not sure if it always was like that or did I change something or am I just seeing things. It looks like the brightest spot of the horizon is not where the sun is, but to the left. If someone can confirm (with old version & my version if possible), would be much appreciated. Second, Erik, I tried not to change the old behaviour but I needed to move some code around to get better precision in the skydom model. I hope everything works like it did with the non shader version, I didn't quite understand all the equations but the code should not change those. Only behaviour that I did change is the clear color in FG from fog color to black. I don't see anything changing near the ground, but the effect near space is better :) Other topics, mie and rayleigh coefficients are exposed, but maybe I shuold expose the wavelength dependency too, because that is what affects the sky color the most. The idea is that some code in FG/SG would write the proper coefficients depending on weather conditions to make different looking skies. I also uploaded the python code I used for evaluating the shader and calculating the scale coefficients etc. It is here: http://users.tkk.fi/~lapelto2/fgfs/scatter/scatter.py I can also write a wiki article on the subject should it be necessary. In the future, I'd like to see this shader as a post processing effect applied over all rendered objects so we would get a consistent look and feel everywhere. And also, I didn't think about getting this to the next release, it's too late for that. But maybe to the one after that, so we have time to test things first. Wbr, Zan -- Lauri Peltonen ------------------------------------------------------------------------------ Benefiting from Server Virtualization: Beyond Initial Workload Consolidation -- Increasing the use of server virtualization is a top priority.Virtualization can reduce costs, simplify management, and improve application availability and disaster protection. Learn more about boosting the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
