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Type: Posts; User: loki5100

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  1. it's seam that glDrawTexiOES is not available...

    it's seam that glDrawTexiOES is not available under opengl 2.0 ? or i m wrong ?
  2. Is their any equivalent of glDrawTexiOES (OES_draw_texture) under opengl 2.0?

    i just discover that glDrawTexiOES (OES_draw_texture) (https://www.khronos.org/registry/OpenGL/extensions/OES/OES_draw_texture.txt is not available under opengl 2.0 (only in opengl 1.1). Is their any...
  3. How to draw a texture using glDrawTexiOES?

    I try the following code, but without any success :

    I create my texture like this :




    then later in my main render loop i try to draw the texture with glDrawTexiOES like this :
  4. thanks photon! I will read your link carefully. I...

    thanks photon! I will read your link carefully. I start to think now that my delay problem could be cause by some background task rumning time to time like garbage collector or something like this.
  5. thanks photon, but i not understand, what the...

    thanks photon, but i not understand, what the purpose of a function waitForVsync if in some way eglSwapBuffers already look like to wait it. what is very strange is to not have multiple of 16.6 ms...
  6. Personally i start to think that the vsync is not...

    Personally i start to think that the vsync is not really "fixed", it's around 16.6 ms but could be sometime less or higher. i have some anim that are not fluid like 60fps but that also are not slow...
  7. yes but how to find it :( yes, so it's...

    yes but how to find it :(



    yes, so it's mean that eglswapbuffers can return immediatly if buffer chain is empty ? anyway this not explain the exotic number (14 - 18 - 19 - 22 - etc..) i have...
  8. Is opengl vsync fixed or it's can fluctuate?

    In OpenGl (under android if it's matter) does vsync signal absolutely fixed at every 16.6 ms interval and can not fluctuate or could it be a little "moveable" in some circumstance ?

    I mean it's...
  9. thanks Photon! i try eliminating...

    thanks Photon!



    i try eliminating everything except glclear, now yes i have number more close to 16 but still i can see number like 15ms, 18ms or 20ms ... this i don't understand how i can have...
  10. How vsync work ? Why i not have a multiple of 16.6 ms between each eglSwapBuffers?

    I do not understand, I took the source code of delphi to see how it is performed with OpenGL (under android). so on every paint delphi do :



    so this make OpenGL swapping the back buffer with...
  11. why EGL_SURFACE_TYPE=EGL_PBUFFER_BIT + eglCreatePbufferSurface fail ?

    Hello,

    i don't understand, when i create Surface = eglCreatePbufferSurface with attribute EGL_SURFACE_TYPE=EGL_PBUFFER_BIT then it's fail :(
    but without the attribute...
  12. How to share a texture among several thread ?

    Hello,

    I on android and i have a main shared Context on the main thread and several background context on several background thread

    main shared context is created like :
    ...
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