[Bug 97069] Radeon r600 glamor corruptions on ARM64

[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Product|xorg                        |Mesa
          Component|Driver/Radeon               |Drivers/Gallium/radeonsi
           Assignee|xorg-driver-ati@lists.x.org |dri-devel@lists.freedesktop
                   |                            |.org
         QA Contact|xorg-team@lists.x.org       |dri-devel@lists.freedesktop
                   |                            |.org
            Version|unspecified                 |11.2

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[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Drivers/Gallium/radeonsi    |Drivers/Gallium/r600

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[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

--- Comment #6 from Michel Dänzer <michel@daenzer.net> ---
Does R600_DEBUG=nowc instead of
MESA_EXTENSION_OVERRIDE="-GL_ARB_buffer_storage" help as well?

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[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

--- Comment #7 from Clemens Eisserer <linuxhippy@gmail.com> ---
With nowc set the corruptions are still there, unfortunately.
I'll give mesa 12.0.1 a try, the kernel version used is unfortunately fixed.

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[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

--- Comment #8 from Clemens Eisserer <linuxhippy@gmail.com> ---
Mesa 12.0.1 exhibits the same behaviour.
Quite interesting that the core profile version is reported as "0.0" and OpenGL
is limited to 2.1. 

As debian put the libraries into /usr/lib/aarch64-linux-gnu/ I had to configure
it with:

/configure --with-gallium-drivers=r600,radeonsi,nouveau
--with-dri-drivers=swrast --enable-gallium-llvm --with-egl-platforms=drm 
--prefix=/usr --exec-prefix=/usr/lib/aarch64-linux-gnu
--libdir=/usr/lib/aarch64-linux-gnu/

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[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

--- Comment #9 from Clemens Eisserer <linuxhippy@gmail.com> ---
Created attachment 125335
  --> https://bugs.freedesktop.org/attachment.cgi?id=125335&action=edit
xorg.log of patched xserver with self-compiled mesa-12.0.1

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[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

--- Comment #10 from Clemens Eisserer <linuxhippy@gmail.com> ---
Created attachment 125336
  --> https://bugs.freedesktop.org/attachment.cgi?id=125336&action=edit
glxinfo of self-compiled mesa-12 (reporting core-profile version 0.0)

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[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

--- Comment #11 from Nicolai Hähnle <nhaehnle@gmail.com> ---
You have to run Mesa configure with --enable-texture-float (blame the lawyers).

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[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

--- Comment #12 from Clemens Eisserer <linuxhippy@gmail.com> ---
Thanks, with float textures it now correctly reports OpenGL-3.3

However more ugly things are going on.

When running the PBO texture upload benchmark at available at
http://www.songho.ca/opengl/gl_pbo.html, I get tons of the following messages:

radeon: Failed to allocate a buffer:
radeon:    size      : 4194304 bytes
radeon:    alignment : 4096 bytes
radeon:    domains   : 2
radeon:    flags     : 4
radeon: Failed to allocate a buffer:
radeon:    size      : 4194304 bytes
radeon:    alignment : 4096 bytes
radeon:    domains   : 2
radeon:    flags     : 4
EE r600_texture.c:1346 r600_texture_transfer_map - failed to create temporary
texture to hold untiled copy


later on, when I try to resize the benchmark window, Xorg segfaults:

Thread 1 "Xorg" received signal SIGSEGV, Segmentation fault.
0x0000ffffb6d59348 in evergreen_emit_constant_buffers (rctx=0xaaaaaad5cbe0,
state=0xaaaaaad5dba8, buffer_id_base=<optimized out>,
    reg_alu_constbuf_size=<optimized out>, reg_alu_const_cache=<optimized out>,
pkt_flags=<optimized out>) at evergreen_state.c:1877
1877                    va = rbuffer->gpu_address + cb->buffer_offset;
(gdb) bt
#0  0x0000ffffb6d59348 in evergreen_emit_constant_buffers (rctx=0xaaaaaad5cbe0,
state=0xaaaaaad5dba8, buffer_id_base=<optimized out>,
    reg_alu_constbuf_size=<optimized out>, reg_alu_const_cache=<optimized out>,
pkt_flags=<optimized out>) at evergreen_state.c:1877
#1  0x0000ffffb6d86ab0 in r600_emit_atom (atom=0xaaaaaad5dba8,
rctx=0xaaaaaad5cbe0) at r600_pipe.h:549
#2  r600_draw_vbo (ctx=0xaaaaaad5cbe0, dinfo=<optimized out>) at
r600_state_common.c:1794
#3  0x0000ffffb6be30f0 in u_vbuf_draw_vbo (mgr=0xaaaaaadb1b60, info=<optimized
out>) at util/u_vbuf.c:1163
#4  0x0000ffffb6a4e104 in st_draw_vbo (ctx=0xffffb3647010, prims=<optimized
out>, nr_prims=1, ib=0x0, index_bounds_valid=<optimized out>, min_index=0,
    max_index=0, tfb_vertcount=0x0, stream=0, indirect=0x0) at
state_tracker/st_draw.c:251
#5  0x0000ffffb6a17b04 in vbo_draw_arrays (ctx=0xffffb3647010, mode=5, start=0,
count=4, numInstances=1, baseInstance=0) at vbo/vbo_exec_array.c:503
#6  0x0000ffffb7290154 in glamor_poly_fill_rect_gl (prect=<optimized out>,
nrect=1, gc=0xaaaaab8415cc, drawable=0xaaaaab833fc0)
    at ../../glamor/glamor_rects.c:128
#7  glamor_poly_fill_rect (drawable=0xaaaaab833fc0, gc=0xaaaaab8415cc, nrect=1,
prect=<optimized out>) at ../../glamor/glamor_rects.c:163
#8  0x0000aaaaaabeccdc in damagePolyFillRect (pDrawable=0xaaaaab833fc0,
pGC=0xaaaaab817ea0, nRects=1, pRects=<optimized out>)
    at ../../../miext/damage/damage.c:1194
#9  0x0000aaaaaaafe180 in ProcPolyFillRectangle (client=0xaaaaaacd1dc0) at
../../dix/dispatch.c:1883
#10 0x0000aaaaaab01d4c in Dispatch () at ../../dix/dispatch.c:430
#11 0x0000aaaaaab05c20 in dix_main (argc=1, argv=0xfffffffffc58,
envp=<optimized out>) at ../../dix/main.c:300
#12 0x0000ffffb7a9c8a4 in __libc_start_main (main=0x0, argc=0, argv=0x0,
init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>,
    stack_end=<optimized out>) at libc-start.c:291
#13 0x0000aaaaaaaefba8 in _start ()

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[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

--- Comment #13 from Clemens Eisserer <linuxhippy@gmail.com> ---
ok, there seem to be problems with TTM or  DRM - running the same benchmark on
nouveau also leads to an abort caused by issues with buffer allocation:

[  236.977333] [TTM] nouveau 0000:01:00.0: Unable to get page 0
[  236.982990] [TTM] nouveau 0000:01:00.0: Failed to fill cached pool (r:-12)!

Impressive, despite those low-level issues, both r600 as well as nouveau can
run sauerbraten and glamor.

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[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

--- Comment #14 from Clemens Eisserer <linuxhippy@gmail.com> ---
I was able to track the TTM issues down to a very small coherent dma memory
pool setting (4MB). With the kernel options "coherent_pool=128M cma=256M" all
the code stressing texture up-/download works fine at expected performance.

I'll give it a try next week to see whether this also fixes the issues with
GL_ARB_buffer_storage.

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[Bug 97069] Radeon r600 glamor corruptions on ARM64

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https://bugs.freedesktop.org/show_bug.cgi?id=97069

GitLab Migration User <gitlab-migration@fdo.invalid> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #15 from GitLab Migration User <gitlab-migration@fdo.invalid> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/591.

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