You still haven't clearly explained how you use the GL context from two different threads? I understand you're locking, etc. But are you doing an eglMakeCurrent() to transfer ownership from GLSurfaceView's thread to another thread?
On Sun, Jul 1, 2012 at 5:30 PM, gl...@wanderfulstorybooks.com < gl...@wanderfulstorybooks.com> wrote: > Romaine, > > I am only called from Andrioid with a useable GL10 context from > GLSurfaveView.Renderer.onDrawFrame (or onSurfaceXXX). If I save the value > and try to use it from another thread, it does not work. Please ignore the > question of locking. I was trying to inform you that I have been > developing software for 35 years and wasn't asking anything stupid. I know > I cannot use the context from two thread simultaneously. That is what the > locking is for. In this manner, I am able to set the gl context on a > different thread and use it successfully on iOS, OSX, Win32, etc. The > OpenGL ES spec says nothing about Andrioid, which perhaps is an act of > discretion ... > > On Saturday, June 30, 2012 4:33:32 PM UTC-7, > gl...@wanderfulstorybooks.comwrote: >> >> Hello, >> >> I am optimizing an OpenGL-based application ported from that other >> major mobile OS and find that I cannot successfully access the GL >> context from anything other than the rendering thread of >> GLSurfaceView. What I CAN do on other platforms is upload my single >> (and large) texture to GL prior to needing to render the texture >> itself. This is a 640x480 8-bit RGB texture that takes some time to >> upload to the chip and needs to be done every time I realize a new >> frame of animation from the background system memory buffer. I'm sure >> you can appreciate the savings in execution time if I can perform this >> upload from another thread when I have nothing left to do but wait for >> GLSurfaceView's rendering thread to call me. All is synchronized >> safely as evidenced by the successful release of this software using >> this very same technique on that-other-platform-that-**shall-not-be >> named. Things are very smooth and zippy on that platform, but Android >> currently suffers by comparison. Is there any way to do this? >> >> >> Thanks >> >> Glenn > > -- > 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 -- Romain Guy Android framework engineer romain...@android.com -- 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
