thx, yes I am checking all gl calls with glGetError, but more importantly: I check for matching configs, and do get a match back for my test device (Acer Iconia).
I'll try 565 but I will be surprised if that fixes double buffering. Bram On 2011-12-29, at 12:43 PM, Indicator Veritatis wrote: > Do you have to use 8 bits for each of RGB? Surfaces and textures on > many Android devices only support 565, as has often been reported in > this group. What has not been so clearly reported is what goes wrong > if you specify the wrong (unsupported) values. Are you checking for > EGL error codes after setting this configuration? > > On Dec 27, 4:15 pm, Bram Stolk <[email protected]> wrote: >> Hi, >> >> I am experience flicker in the visuals, which after some >> investigation, turns out to be caused by drawing taking place in the >> FRONT buffer, instead of the BACK buffer. >> >> I've found this old thread on this >> issue:http://groups.google.com/group/android-developers/browse_thread/threa... >> >> I can see the flicker happening, even with absence of any touch >> events. >> Visuals that are overdrawn later in the frame are briefly visible none >> the less. >> The only way I can explain this behaviour is that the drawing occurs >> in the front buffer. >> >> Some details on my code: >> - I use OpenGL ES2 >> - NDK r7 >> - Device: Acer Iconia Tablet running Android2.3 >> - Using NativeActivity, with all-C code, no java code >> - Using this spec for choosing GL config: >> const EGLint attribs[] = { >> EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, >> EGL_SURFACE_TYPE, EGL_WINDOW_BIT, >> EGL_DEPTH_SIZE, 16, >> EGL_BLUE_SIZE, 8, >> EGL_GREEN_SIZE, 8, >> EGL_RED_SIZE, 8, >> EGL_ALPHA_SIZE, 8, >> EGL_NONE >> }; >> - Only do glClear(), one glDrawArray with LINES, and one glDrawArray >> with TRIANGLES per frame. >> - Use eglSwapBuffers() at the end of my engine draw func. >> >> Any tips on how I could fix this? >> >> thx, >> >> Bram > > -- > 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 -- 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
