Mali OpenGLES3 emulator installation on Ubuntu

Hello everybody! It's my first post here . (Hope I've posted in the correct section...)

I'm on Ubuntu 14.04 (64 bit), and I'm trying to use the Mali OpenGLES3 emulator version 1.4.0.

I already got the Mesa libs (libEGL.so and libGLESv2.so) installed on my system (via Synaptic) and they work as expected.

Because of that, I did NOT install the Mali libraries: instead, I downloaded the tgz package.

To be able to override the Mesa libraries, I've tried all the possible approaches (rpath,LD_LIBRARY_PATH and LD_PRELOAD),

and the only one that seemed to work was the LD_PRELOAD way through a script like the following (all the .so files are in the same folder as 'appCube'):

#!/bin/bash

export MY_FOLDER=`dirname $0`

export LD_PRELOAD=$MY_FOLDER/libMaliEmulator.so.1.4.0:$MY_FOLDER/libcompiler_manager.so:$MY_FOLDER/liblog4cplus.so.1.1.2:$MY_FOLDER/libEGL.so.1.4.0:$MY_FOLDER/libGLESv2.so.2.0.0:$LD_PRELOAD

$MY_FOLDER/appCube

The problem is that as an output I get these errors (and the program quits):

FATAL - EGL: (initialize 104) GLX returned Error base : a9, Event Base : 68

FATAL - EGL: GLX supports the following extensions: GLX_EXT_visual_info GLX_EXT_visual_rating GLX_SGIX_fbconfig GLX_SGIX_pbuffer GLX_SGI_video_sync GLX_SGI_swap_control GLX_EXT_swap_control GLX_EXT_swap_control_tear GLX_EXT_texture_from_pixmap GLX_EXT_buffer_age GLX_ARB_create_context GLX_ARB_create_context_profile GLX_EXT_create_context_es_profile GLX_EXT_create_context_es2_profile GLX_ARB_create_context_robustness GLX_ARB_multisample GLX_NV_float_buffer GLX_ARB_fbconfig_float GLX_EXT_framebuffer_sRGB GLX_NV_multisample_coverage GLX_ARB_get_proc_address

FATAL - GLES: (checkMissingVersions 824) Couldn't find symbol 'glGetQueryObjecti64v' in 'libGL.so' (required for version of GL)!

FATAL - GLES: (checkMissingExtensions 836) Couldn't find symbol 'glFramebufferTexture2DMultisampleEXT' in 'libGL.so' (required for extension of GL)!

FATAL - GLES: (checkMissingExtensions 836) Couldn't find symbol 'glGetInternalformativ' in 'libGL.so' (required for extension of GL)!

FATAL - GLES: (checkMissingVersions 824) Couldn't find symbol 'glQueryCounter' in 'libGL.so' (required for version of GL)!

FATAL - GLES: (checkMissingVersions 824) Couldn't find symbol 'glGetQueryObjectui64v' in 'libGL.so' (required for version of GL)!

GL renderer: [NULL]

GL vendor:[NULL]

GL version: [NULL]

GL shading language version: [NULL]

GL API Version: [0.0]

FATAL - GLES: (configureDepthStencilAttachments 242) Will use GL_DEPTH_COMPONENT24 for system FBO's depth+stencil attachment

FATAL - GLES: (configureColorAttachment 294) Using GL_RGB8 for color attachment

FATAL - GLES: (recreateSystemFBO 1027) An invalid framebuffer object was created!

FATAL - GLES: (init_context_data_from_within_active_context 105) Could not initialize system FBO!

GL_VENDOR ARM Ltd                (*)

GL_VERSION OpenGL ES 2.0        (*)

glGetError() = 1281 (0x00000501) at line 63

(*) These output lines are cause by these two lines I've added to the code:

fprintf(stderr,"GL_VENDOR %s\n",(char*)glGetString(GL_VENDOR));

fprintf(stderr,"GL_VERSION %s\n",(char*)glGetString(GL_VERSION));

When I run the program without this script, I get the following output (and the program works as expected using the Mesa implementation):

libEGL warning: DRI2: failed to authenticate

GL_VENDOR VMware, Inc.                        (*)

GL_VERSION OpenGL ES 3.0 Mesa 10.1.3        (*)    [Mesa seems to provide an ES 3.0 context whenever is supported...]

XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"

      after 298 requests (210 known processed) with 0 events remaining.

P.S. My graphic card is an (old) NVidia GT 120, and it's working with the default proprietary driver (331.38).

Maybe the Mali emulator does not support it (However it should support OpenGL 3.3.0).

P.S.2: When trying to force a OpenGLES3 context the output is similiar to the one posted above, with the additional line:    

FATAL - GLES: (initializeGLFunctionProxy 689) At least one GL33 function is unavailable - potential crash ahead.

P.S.3: The Mali OpenGLES Emulator manual states that I should add to my script the line:

export MALI_EMULATOR_COMPILER_MANAGER_PATH=/MyFullPath/Mali_OpenGL_ES_Emulator-1.4.0-Linux-64bit/share/mali-compiler-manager/

However this does not seem to change the output in any way (even if I append libMali-T600_r4p0-00rel0.so to LD_PRELOAD).

Any help is welcome. Thank you in advance .