i.MX Processors中的主题 Re: Slow loading of OpenGL ES Vivante Library on iMX6 Board with Android

Slow loading of OpenGL ES Vivante Library on iMX6 Board with Android

yufengzhang — Fri, 12 Feb 2016 18:04:42 GMT

Hi,

We have a custom Android app in which during its start-up the loading of the OpenGL ES Vivante library files can take up to 3 seconds to finish. See the following logcat snippet:

01-02 00:06:16.650 3509 3509 D libEGL : loaded /system/lib/egl/libEGL_VIVANTE.so

01-02 00:06:18.810 3509 3509 D libEGL : loaded /system/lib/egl/libGLESv1_CM_VIVANTE.so

01-02 00:06:18.880 3509 3509 D libEGL : loaded /system/lib/egl/libGLESv2_VIVANTE.so

The environment is android_kk4.4.2_1.0.0-ga running on i.MX6 Quad board.

Can anyone please advise on the cause and potential solution, or what the best way is in order to carry out further investigation on this issue?

Best regards,

Yufeng

Re: Slow loading of OpenGL ES Vivante Library on iMX6 Board with Android

Bio_TICFSL — Tue, 16 Feb 2016 15:51:34 GMT

Hi Yufeng,

In general you can debug your kernel by enabling debug output or adding printk's Did you turn on DEBUG flag in GPU driver kernel side? It may help.

Links that might help:

http://jas-hacks.blogspot.co.uk/2013/10/imx6-ubuntu-1304-debugging-gpu.html

Hope this helps

Re: Slow loading of OpenGL ES Vivante Library on iMX6 Board with Android

yufengzhang — Sun, 06 Mar 2016 10:25:54 GMT

Hi,

Thank you for the your help.

In general you can debug your kernel by enabling debug output or adding printk's Did you turn on DEBUG flag in GPU driver kernel side? It may help.

Can you shed some more light on how to turn on the DEBUG flag in the GPU driver at the kernel side?

Best regards,

Yufeng

Re: Slow loading of OpenGL ES Vivante Library on iMX6 Board with Android

yufengzhang — Thu, 10 Mar 2016 14:42:11 GMT

I have a suspicion that something weird may have happened during the function symbol resolving during the loading stage of the opengl libraries:

See /frameworks/native/opengl/libs/EGL/Loader.cpp (http://androidxref.com/4.4.2_r2/xref/frameworks/native/opengl/libs/EGL/Loader.cpp#261)

362    void* dso = dlopen(driver_absolute_path, RTLD_NOW | RTLD_LOCAL);
363    if (dso == 0) {
364        const char* err = dlerror();
365        ALOGE("load_driver(%s): %s", driver_absolute_path, err?err:"unknown");
366        return 0;
367    }
368
369    ALOGD("loaded %s", driver_absolute_path);
370
371    if (mask & EGL) {
372        getProcAddress = (getProcAddressType)dlsym(dso, "eglGetProcAddress");
373
374        ALOGE_IF(!getProcAddress,
375                "can't find eglGetProcAddress() in %s", driver_absolute_path);
376
377        egl_t* egl = &cnx->egl;
378        __eglMustCastToProperFunctionPointerType* curr =
379            (__eglMustCastToProperFunctionPointerType*)egl;
380        char const * const * api = egl_names;
381        while (*api) {
382            char const * name = *api;
383            __eglMustCastToProperFunctionPointerType f =
384                (__eglMustCastToProperFunctionPointerType)dlsym(dso, name);
385            if (f == NULL) {
386                // couldn't find the entry-point, use eglGetProcAddress()
387                f = getProcAddress(name);
388                if (f == NULL) {
389                    f = (__eglMustCastToProperFunctionPointerType)0;
390                }
391            }
392            *curr++ = f;
393            api++;
394        }
395    }

Any thought?

Is there a way to get the latest VIVANTE vendor opengl libraries for android_kk4.4.2_1.0.0-ga on i.MX6 Quad board?

Thanks,

Yufeng

Re: Slow loading of OpenGL ES Vivante Library on iMX6 Board with Android

yufengzhang — Mon, 14 Mar 2016 17:43:59 GMT

Using the Android DDMS tool, it looks like /frameworks/base/opengl/java/com/google/android/gles_jni/EGLImpl.java: eglGetDisplay() takes more than 3 seconds to finish. Really?!

I probably need to insert some instrument code in /frameworks/native/opengl/libs/EGL/Loader.cpp

Re: Slow loading of OpenGL ES Vivante Library on iMX6 Board with Android

yufengzhang — Wed, 16 Mar 2016 18:59:28 GMT

OK. Instrumented the loading of /libEGL_VIVANTE.so and the symbol resolving.

Looks like that the first time eglGetProcAddress() is called, it took more than 3 seconds to finish!!!!

Anyone has any suggestion? So weird!

01-02 00:04:22.880 3528 3528 D libEGL : loaded /system/lib/egl/libEGL_VIVANTE.so
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglGetDisplay
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglInitialize
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglTerminate
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglGetConfigs
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglChooseConfig
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglGetConfigAttrib
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglCreateWindowSurface
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglCreatePixmapSurface
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglCreatePbufferSurface
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglDestroySurface
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglQuerySurface
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglCreateContext
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglDestroyContext
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglMakeCurrent
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglGetCurrentContext
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglGetCurrentSurface
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglGetCurrentDisplay
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglQueryContext
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglWaitGL
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglWaitNative
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglSwapBuffers
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglCopyBuffers
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglGetError
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglQueryString
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglGetProcAddress
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglSurfaceAttrib
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglBindTexImage
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglReleaseTexImage
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglSwapInterval
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglBindAPI
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglQueryAPI
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglWaitClient
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglReleaseThread
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglCreatePbufferFromClientBuffer
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglLockSurfaceKHR
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglUnlockSurfaceKHR
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglCreateImageKHR
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglDestroyImageKHR
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglCreateSyncKHR
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglDestroySyncKHR
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglClientWaitSyncKHR
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglSignalSyncKHR
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglGetSyncAttribKHR
01-02 00:04:22.880 3528 3528 D libEGL :    ----
01-02 00:04:22.880 3528 3528 D libEGL :    Process eglWaitSyncKHR
01-02 00:04:22.880 3528 3528 D libEGL :      Call getProcAddress
01-02 00:04:26.170 3528 3528 D libEGL :    ----
01-02 00:04:26.170 3528 3528 D libEGL :    Process eglSetSwapRectangleANDROID
01-02 00:04:26.170 3528 3528 D libEGL :    ----
01-02 00:04:26.170 3528 3528 D libEGL :    Process eglGetRenderBufferANDROID
01-02 00:04:26.170 3528 3528 D libEGL :      Call getProcAddress
01-02 00:04:26.170 3528 3528 D libEGL :    ----
01-02 00:04:26.170 3528 3528 D libEGL :    Process eglDupNativeFenceFDANDROID
01-02 00:04:26.170 3528 3528 D libEGL :      Call getProcAddress
01-02 00:04:26.170 3528 3528 D libEGL :    ----
01-02 00:04:26.170 3528 3528 D libEGL :    Process eglGetSystemTimeFrequencyNV
01-02 00:04:26.170 3528 3528 D libEGL :      Call getProcAddress
01-02 00:04:26.170 3528 3528 D libEGL :    ----
01-02 00:04:26.170 3528 3528 D libEGL :    Process eglGetSystemTimeNV
01-02 00:04:26.170 3528 3528 D libEGL :      Call getProcAddress
01-02 00:04:26.170 3528 3528 D libEGL :    ----
01-02 00:04:26.170 3528 3528 D libEGL :    Process eglHibernateProcessIMG
01-02 00:04:26.170 3528 3528 D libEGL :      Call getProcAddress
01-02 00:04:26.170 3528 3528 D libEGL :    ----
01-02 00:04:26.170 3528 3528 D libEGL :    Process eglAwakenProcessIMG
01-02 00:04:26.170 3528 3528 D libEGL :      Call getProcAddress
01-02 00:04:26.170 3528 3528 D libEGL :    ----
01-02 00:04:26.170 3528 3528 D libEGL : #### finish resolving /system/lib/egl/libEGL_VIVANTE.so
01-02 00:04:26.170 3528 3528 D libEGL : loaded /system/lib/egl/libGLESv1_CM_VIVANTE.so
01-02 00:04:26.240 3528 3528 D libEGL : #### finish resolving /system/lib/egl/libGLESv1_CM_VIVANTE.so
01-02 00:04:26.240 3528 3528 D libEGL : loaded /system/lib/egl/libGLESv2_VIVANTE.so
01-02 00:04:26.300 3528 3528 D libEGL : #### finish resolving /system/lib/egl/libGLESv2_VIVANTE.so

Re: Slow loading of OpenGL ES Vivante Library on iMX6 Board with Android

liulibo — Thu, 17 Nov 2016 10:08:13 GMT

Hi, Yu feng,

I met the same problem。Did you solve it ? Can you communicate with me。qq/weixin:76273091

Re: Slow loading of OpenGL ES Vivante Library on iMX6 Board with Android

yufengzhang — Mon, 30 Jan 2017 16:44:52 GMT

Hi Libo,

Apologize for the late response, the issue was finally resolved by my client who received an updated drop of the OpenGL libraries from Freescale. Clearly, this is an issue in the graphics drivers. Our internal investigation also found out that this problem does not occur in the Android 5.1 BSP.

Hope this help.

Best regards,

Yufeng

Re: Slow loading of OpenGL ES Vivante Library on iMX6 Board with Android

liulibo — Mon, 06 Feb 2017 06:05:39 GMT

Hi Yufeng

Thank you for your response.Could you please send OpenGL libraries to me(Email:llb1119@163.com),thank you very much.

Re: Slow loading of OpenGL ES Vivante Library on iMX6 Board with Android

yufengzhang — Mon, 06 Feb 2017 12:27:55 GMT

I'm afraid that you will have to contact NXP/Freescale for those OpenGL libraries. I don't have them and even if I had, I would not be allowed to distribute them.