Robert Green, thanks again for your informative answer. I added the MODELVIEW mode right after setting the viewport, and did a loadIdentity after that. No change, but I agree its the correct thing to do.
Still zero lines visible on the emulator (even when I scale up its display). Looks fine on the G1. Off to read the manuals again ;-( Per your question: "gl.glScalef(1, _hgt2width, 1); float lscale = .002f*MyApp._curScale; It could be that I just don't understand what this is supposed to do but magic multipliers like .002 never look good to me when you're having issues with drawing precision." I am drawing in a geographical coordinate space, not pixel space. So the scaling is used to transform from that space to the viewing space. In my geographical space, my coordinates are in (projected) lat/long specified with higher precision than even float can deal with (which, fortunately, isn't a problem with this app). My test case uses simple coordinates, but I left in the same scaling as in the real app. "// ditch the fixed point (it's only faster on first-gen devices and only in certain cases)" For now, I'll keep it because a bunch of code is in it, and I am testing on a first gen device. // now if you want a line 1px wide on the 10th line, draw a line with x on 9.5f I just want my lines to show up, and my reading of the openGl documents indicates that they should, if drawn with a line width of 1, no matter where I put them. Of course, offsetting them from pixel edges would be a good idea, except I am not drawing in pixel coordinate space. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
