> I think that is what we have for now. You can do better by increasing > your shadow map size to 8192 or 16384, but at the 16384 resolution my > performance goes into the tank, and at 8192, there are still many shadow > artifacts due to lack of resolution. (clearly blocky/xelated/aliasing > edges, something that looks like z-buffer fighting for objects further > way, etc.) Hopefully this will improve with future tuning.
Okay, just to be sure, I've now also compared what I see to the IAR-80 on Vinson video by Fred and to the Cub flying around Kufstein video by HHS. I'm seeing a number of issues: 1) The shadows around the aircraft have a ragged egde. That I understand is a function of the shadow map size. I can't go beyond 4096, I get an error on the console trying to go higher - but 4096 works fine with acceptable framerates, the edge is just a limit of my GPU and that is okay. 2) I see shadows flickering (I tried the Cub cockpit for comparison) when I'm in level flight where they shouldn't move - the effect is a bit like a shadow cast by a candle flickering in the wind. In Heiko's video that is sometimes visible (he doesn't fly straight much, and when the shadows actually move the effect is masked). I've never seen it in Fred's videos - is it not there, or just not in the video? Personally, I find that flickering maddening - I've ended my test flight after 5 minutes because I was starting to get a headache. 3) On my box, all three panels in the screen edges show the same image - not so on Fred's videos - is this the intended behaviour? 4) Fred's IAR-80 video has the camera circling around an IAR-80 parked on the Vinson. I tried to do this as well, but for me the effect comes out very differently. The amount of shadow I see depends on the angle of the view axis with the sunlight direction - under some angles I see dark shadows, under some angles I see no shadows at all whereas in the video the shadows behave as expected, i.e. they stay the same independent of view angle. Under some angles (sun in my back) I also get a whiteout of bright textures. I haven't seen this issue in any of the videos, but it likewise looks very unrealistic - I watch an object, and as I overfly it, the shadow goes away... (Needless to say, I've switched any lightfield rendering scheme which would interfere off... Also, most tests I've done with FGData master rather than my customized branch) As I said earlier, I respect the amount of work which has gone into that very much and I'm also aware that this is brand new technology with some quirks to be sorted out. But at least I can't really work with it or fly the state which is on my system. So - since it's not working here - can I help in any way to pin down the issues and so help you fixing them? Cheers, * Thorsten ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
