It's slow because: 1) Your texture is huge and you're not mipmapping. 2) Blend is slow and compounded by the large not mipmapped texture 3) You're using linear min and max - mega performance penalty on that chip (msm7201a).
The 3 things together make for 5 fps. :) The milestone has a pvr sgx530 which can handle those 3 things much better. I'm not surprised in the least by your results. On devices like the magic, try: a single 512x512 texture mipmapped with nearest-neighbor filtering Note that some chips do not allow mip levels above 0 to be non-square like 1024x512. They will want square eg 512x512 or you'll just get white or black. On Jun 28, 5:11 pm, Daniel <[email protected]> wrote: > Hello, > > First time poster, long time user. I really appreciate all of those > who partake in this group and help out! My problem is that I can't > seem to get stable FPS across multiple devices when rendering alpha. > I took a very straightforward tutorial from the infamous NeHe website > (lesson 6 from the android port versions) and modified it slightly. > The original code can be found here: > > http://code.google.com/p/nehe-android/ > > Here is my slightly modified version. > > http://www.danielalcocer.com/androidfps.zip > > All I did was "simplify" it by making it render one 2d .png image > across the entire screen in orth view. I have 2 versions of the file > I'm rendering, one with alpha, and one without. Here are my > framerates: > > Motorola Milestone: 45 FPS with no alpha > Motorola Milestone: 38 FPS with alpha > > HTC Magic: 60 FPS with no alpha > HTC Magic: 5 FPS with alpha (that's right, 5) > > I read that emulators do not properly "emulate" rendering open gl > scenes, thus making the frame rates irrelevant, so I did not include > them. Also, frame rates are printed using System.out.println once > every 5 seconds. For some reason I felt compelled to mention this :). > > Now, these numbers are just mind boggling to me, and I think they > speak for themselves. Can anyone point me in the right direction so I > can get the HTC Magic back up to par? I've been on this problem for > days and I cannot for the life of me figure out how to fix it. > > Thanks, > > Daniel -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
