When running the BGFX examplesDebug this assert is thrown. This assert is also being thrown in our game (Smith and Winston) across various Linux distributions/Mesa combinations reported by users:

Reported gfx cards are: R380, RX540

My Setup is:

dazza@dazbuntu:~/work/bgfx/bgfx/examples/runtime$ uname -a
Linux dazbuntu 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

dazza@dazbuntu:~/work/bgfx/bgfx/examples/runtime$ glxinfo -B
name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: X.Org (0x1002)
    Device: AMD Radeon (TM) R9 380 Series (TONGA, DRM 3.23.0, 4.15.0-45-generic, LLVM 7.0.1) (0x6939)
    Version: 19.1.0
    Accelerated: yes
    Video memory: 4096MB
    Unified memory: no
    Preferred profile: core (0x1)
    Max core profile version: 4.5
    Max compat profile version: 4.5
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
Memory info (GL_ATI_meminfo):
    VBO free memory - total: 4006 MB, largest block: 4006 MB
    VBO free aux. memory - total: 4074 MB, largest block: 4074 MB
    Texture free memory - total: 4006 MB, largest block: 4006 MB
    Texture free aux. memory - total: 4074 MB, largest block: 4074 MB
    Renderbuffer free memory - total: 4006 MB, largest block: 4006 MB
    Renderbuffer free aux. memory - total: 4074 MB, largest block: 4074 MB
Memory info (GL_NVX_gpu_memory_info):
    Dedicated video memory: 4096 MB
    Total available memory: 8192 MB
    Currently available dedicated video memory: 4006 MB
OpenGL vendor string: X.Org
OpenGL renderer string: AMD Radeon (TM) R9 380 Series (TONGA, DRM 3.23.0, 4.15.0-45-generic, LLVM 7.0.1)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 19.1.0-devel (git-eb13211 2019-02-23 bionic-oibaf-ppa)
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 4.5 (Compatibility Profile) Mesa 19.1.0-devel (git-eb13211 2019-02-23 bionic-oibaf-ppa)
OpenGL shading language version string: 4.50
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile

OpenGL ES profile version string: OpenGL ES 3.2 Mesa 19.1.0-devel (git-eb13211 2019-02-23 bionic-oibaf-ppa)
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20






Stack trace is:

#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007ffff670e801 in __GI_abort () at abort.c:79
#2  0x00007ffff66fe39a in __assert_fail_base (fmt=0x7ffff68857d8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", 
    assertion=assertion@entry=0x7fffcef5e720 "!util_format_has_stencil(desc)", 
    file=file@entry=0x7fffcef5e338 "../src/gallium/auxiliary/util/u_blitter.c", line=line@entry=2062, 
    function=function@entry=0x7fffcef5f300 "util_blitter_generate_mipmap") at assert.c:92
#3  0x00007ffff66fe412 in __GI___assert_fail (assertion=0x7fffcef5e720 "!util_format_has_stencil(desc)", 
    file=0x7fffcef5e338 "../src/gallium/auxiliary/util/u_blitter.c", line=2062, function=0x7fffcef5f300 "util_blitter_generate_mipmap")
    at assert.c:101
#4  0x00007fffceb593af in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007fffce4afd9c in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#6  0x00007fffceb61d56 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#7  0x00007fffceb5f4f7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#8  0x00007fffceb60406 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#9  0x00007fffceb6080e in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#10 0x00007fffce8e5fb0 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#11 0x00007fffce8e673c in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#12 0x00007fffce7e06d9 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#13 0x00007fffce7e179f in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#14 0x00005555557bb469 in bgfx::gl::TimerQueryGL::update (this=0x7ffff7ec7930) at ../../../src/renderer_gl.h:1484
#15 0x00005555557bb3ac in bgfx::gl::TimerQueryGL::end (this=0x7ffff7ec7930, _idx=0) at ../../../src/renderer_gl.h:1467
#16 0x00005555557b4f2f in bgfx::gl::RendererContextGL::submit (this=0x7ffff7e42010, _render=0x7fffd65a02c0, _clearQuad=..., 
    _textVideoMemBlitter=...) at ../../../src/renderer_gl.cpp:7443
#17 0x0000555555778c00 in bgfx::Context::renderFrame (this=0x7fffd4ca2040, _msecs=5000) at ../../../src/bgfx.cpp:2294
#18 0x0000555555775072 in bgfx::renderFrame (_msecs=-1) at ../../../src/bgfx.cpp:1396
#19 0x0000555555790dab in bgfx::Context::renderThread () at ../../../src/bgfx_p.h:2823
#20 0x00005555558967b8 in bx::Thread::entry (this=0x7fffd4ca2240) at ../../../../bx/src/thread.cpp:311
#21 0x000055555589628c in bx::ThreadInternal::threadFunc (_arg=0x7fffd4ca2240) at ../../../../bx/src/thread.cpp:93
#22 0x00007ffff71ed6db in start_thread (arg=0x7fffdd240700) at pthread_create.c:463
#23 0x00007ffff67ef88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95




Steps to recreate:

* download and BGFX, BImg and BX (follow the instructions to build here: https://bkaradzic.github.io/bgfx/build.html)
* gdb ../../.build/linux64_gcc/bin/examplesDebug
* enter run


see the stack trace as above.

thanks.