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Getting EGL_BAD_DISPLAY while firing eglquerystring() from application

vaibhav

Hi Community,

I am building test suite for Open GL ES 2.0 with EGL support.When I run app ,i am getting above error while getting EGL extensions with API egl.querystring().

Anything I am missing here OR is it because of libMAli.so/libEGL.so/user-space-driver issue?

My platform is linux with x11 as window manager.

Let me know if you want more information

Thanks,

Vaibhav

Message was edited by: vaibhav

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  • 0 Arm Employee Badge in reply to vaibhav

    Hi vaibhav810,

    const char* const extensionStr = egl.queryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);


    QueryString in this case is expecting a valid EGL_DISPLAY.

    Could you try to initialize your display using this method:

    display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if(display == EGL_NO_DISPLAY)
{
     EGLint error = eglGetError();
     LOGE("eglGetError(): %i (0x%.4x)\n", (int)error, (int)error);
     LOGE("No EGL Display available at %s:%i\n", __FILE__, __LINE__);
     exit(1);
}

    And then use the display you got inside your query string.

    For implementation example, you can refer yourself to the simple-framework project included in our OpenGL ES SDK for linux available here: Mali OpenGL ES SDK for Linux - Mali Developer Center

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  • 0 Arm Employee Badge in reply to vaibhav

    Hi vaibhav810,

    const char* const extensionStr = egl.queryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);


    QueryString in this case is expecting a valid EGL_DISPLAY.

    Could you try to initialize your display using this method:

    display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if(display == EGL_NO_DISPLAY)
{
     EGLint error = eglGetError();
     LOGE("eglGetError(): %i (0x%.4x)\n", (int)error, (int)error);
     LOGE("No EGL Display available at %s:%i\n", __FILE__, __LINE__);
     exit(1);
}

    And then use the display you got inside your query string.

    For implementation example, you can refer yourself to the simple-framework project included in our OpenGL ES SDK for linux available here: Mali OpenGL ES SDK for Linux - Mali Developer Center

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