Bug 99796 - vkUpdateDescriptorSets causes SIGSEGV
Summary: vkUpdateDescriptorSets causes SIGSEGV
Status: RESOLVED NOTOURBUG
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/Vulkan/intel (show other bugs)
Version: 17.0
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Intel 3D Bugs Mailing List
QA Contact: Intel 3D Bugs Mailing List
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-02-13 14:35 UTC by Michael Watzko
Modified: 2017-02-18 06:32 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Attachments
vulkaninfo (75.07 KB, text/plain)
2017-02-13 14:35 UTC, Michael Watzko
Details

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Description Michael Watzko 2017-02-13 14:35:46 UTC
Created attachment 129554 [details]
vulkaninfo

I know this is going to be special...

I am writting a little LWJGL Vulkan 2D application which basically draws few
textures - nothing complex. It works fine on my nvidia machine, but on my
laptop with Intel Ivy Bridge this does not work.

The first call of vkUpdateDescriptorSets (1 Texture, 1 Uniform buffer,
1 Vertex Buffer) I get the following SIGSEGV:


Stack: [0x00007ff64afa7000,0x00007ff64b0a8000],  sp=0x00007ff64b0a6108,  free space=1020k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C  [libvulkan_intel.so+0x1b4fb2]
C  [libvulkan_intel.so+0x33a72]
j  org.lwjgl.system.JNI.callPPPV(JJIJIJ)V+0
j  org.lwjgl.vulkan.VK10.nvkUpdateDescriptorSets(Lorg/lwjgl/vulkan/VkDevice;IJIJ)V+38
j  org.lwjgl.vulkan.VK10.vkUpdateDescriptorSets(Lorg/lwjgl/vulkan/VkDevice;Lorg/lwjgl/vulkan/VkWriteDescriptorSe

I already tried to debug it with gdb but without compiled DEBUG flag this does not help that much:

Thread 2 "java" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f002cad1700 (LWP 10011)]
0x00007effcdf69fb2 in ?? () from /usr/lib/x86_64-linux-gnu/libvulkan_intel.so



I am also unable to compile the latest mesa-17.0.0-rc1:

./configure: line 23152: require_dri_shared_libs_and_glapi: command not found
checking for GLPROTO... yes
configure: error: Direct rendering requires libdrm >= 2.4.66



But having one installed:

$ apt-cache policy libdrm-intel1
libdrm-intel1:
  Installiert:           2.4.74+git1611291830.dae413~gd~x
  Installationskandidat: 2.4.74+git1611291830.dae413~gd~x
  Versionstabelle:
 *** 2.4.74+git1611291830.dae413~gd~x 100


I am thankful for any kind of advice / help.



$ cat /etc/apt/sources.list.d/paulo-miguel-dias-pkppa-xenial.list 
deb http://ppa.launchpad.net/paulo-miguel-dias/pkppa/ubuntu xenial main
deb-src http://ppa.launchpad.net/paulo-miguel-dias/pkppa/ubuntu xenial main

Linux mwpc56 4.8.0-30-generic #32~16.04.1-Ubuntu SMP Fri Dec 2 03:43:51 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

$ glxinfo | grep -i version
server glx version string: 1.4
client glx version string: 1.4
GLX version: 1.4
    Version: 17.0.0
    Max core profile version: 3.3
    Max compat profile version: 3.0
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.0
OpenGL core profile version string: 3.3 (Core Profile) Mesa 17.0.0-rc3 - padoka PPA
OpenGL core profile shading language version string: 3.30
OpenGL version string: 3.0 Mesa 17.0.0-rc3 - padoka PPA
OpenGL shading language version string: 1.30
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 17.0.0-rc3 - padoka PPA
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
Comment 1 Jason Ekstrand 2017-02-13 19:08:35 UTC
MW,

Unfortunately, that's not really enough info for me to get a good idea of what's going on.  I've got a couple of guesses:

 1) Something doesn't match between your layout and the descriptors you're writing.

 2) The sampler in an image+sampler combination either doesn't exist or is invalid.

 3) ou're using immutable samplers but something is wrong with layouts.

In any case, you should be running with the Vulkan validation layers and making sure you get no warnings from them.  They *should* catch all of the above.  If that doesn't work, we'll need a better backtrace.

If you installed the debug info for the mesa vulkan package (they appear to be available in your PPA), you should be able to get a real backtrace.  Another option would be to build mesa from source.  It's not terribly hard to do.
Comment 2 Michael Watzko 2017-02-13 20:44:40 UTC
Thanks,

with the additional package 'libgl1-mesa-glx-dbg' I know get a lot more information in gdb:


Thread 2 "java" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f67f4fee700 (LWP 19914)]
isl_gen7_buffer_fill_state_s (state=0x3000, info=0x7f67f4fed2a0) at ./genxml/gen7_pack.h:1274
1274	./genxml/gen7_pack.h: Datei oder Verzeichnis nicht gefunden. (File not found)

(gdb) backtrace
#0  isl_gen7_buffer_fill_state_s (state=0x3000, info=0x7f67f4fed2a0) at ./genxml/gen7_pack.h:1274
#1  0x00007f67cef7f348 in anv_fill_buffer_surface_state (device=0x7f67d4ff8000, state=..., format=<optimized out>, offset=<optimized out>, 
    range=<optimized out>, stride=1) at ../../../../../src/intel/vulkan/anv_device.c:1966
#2  0x00007f67cef7ca72 in anv_UpdateDescriptorSets (_device=0x7f67d4ff8000, descriptorWriteCount=<optimized out>, pDescriptorWrites=<optimized out>, 
    descriptorCopyCount=0, pDescriptorCopies=0x0) at ../../../../../src/intel/vulkan/anv_descriptor_set.c:673




I am using validation layers, they are working, since they already helped
me a few times - but on the desktop on nvidia.

Thats the reason I guess its something with mesa since it runs perfectly on
the desktop. But nonetheless thanks for giving me tips to check for.



Stepped through once:

(gdb) b anv_UpdateDescriptorSets
Haltepunkt 1 at 0x7fb5d05e8700: file ../../../../../src/intel/vulkan/anv_descriptor_set.c, line 573.
(gdb) continue
Continuing.
[Thread 0x7fb5a3bfe700 (LWP 25151) exited]
[Switching to Thread 0x7fb60f25d700 (LWP 25055)]

Thread 2 "java" hit Breakpoint 1, anv_UpdateDescriptorSets (_device=0x7fb5d25f8000, descriptorWriteCount=1, pDescriptorWrites=0x7fb6083a30e8, descriptorCopyCount=0, pDescriptorCopies=0x0)
    at ../../../../../src/intel/vulkan/anv_descriptor_set.c:573
573	../../../../../src/intel/vulkan/anv_descriptor_set.c: Datei oder Verzeichnis nicht gefunden.
(gdb) step
576	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
573	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) backtrace
#0  anv_UpdateDescriptorSets (_device=0x7fb5d25f8000, descriptorWriteCount=1, pDescriptorWrites=0x7fb6083a30e8, descriptorCopyCount=0, pDescriptorCopies=0x0)
    at ../../../../../src/intel/vulkan/anv_descriptor_set.c:573
#1  0x00007fb5f87d9ca4 in ?? ()
#2  0x00007fb600000000 in ?? ()
#3  0x0000000000000000 in ?? ()
(gdb) step
576	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
582	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
578	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
580	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
578	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
582	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
583	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
581	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
583	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
587	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
649	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
655	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
649	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
655	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
656	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
651	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
656	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
651	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
656	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
651	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
656	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
659	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
anv_isl_format_for_descriptor_type (type=VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER) at ../../../../../src/intel/vulkan/anv_cmd_buffer.c:564
564	../../../../../src/intel/vulkan/anv_cmd_buffer.c: Datei oder Verzeichnis nicht gefunden.
(gdb) backtrace
#0  anv_isl_format_for_descriptor_type (type=VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER) at ../../../../../src/intel/vulkan/anv_cmd_buffer.c:564
#1  0x00007fb5d05e8ad6 in anv_UpdateDescriptorSets (_device=0x7fb5d25f8000, descriptorWriteCount=<optimized out>, pDescriptorWrites=<optimized out>, descriptorCopyCount=0, 
    pDescriptorCopies=0x0) at ../../../../../src/intel/vulkan/anv_descriptor_set.c:659
#2  0x00007fb5f87d9ca4 in ?? ()
#3  0x00007fb600000000 in ?? ()
#4  0x0000000000000000 in ?? ()
(gdb) step
565	in ../../../../../src/intel/vulkan/anv_cmd_buffer.c
(gdb) step
564	in ../../../../../src/intel/vulkan/anv_cmd_buffer.c
(gdb) step
565	in ../../../../../src/intel/vulkan/anv_cmd_buffer.c
(gdb) step
568	in ../../../../../src/intel/vulkan/anv_cmd_buffer.c
(gdb) step
577	in ../../../../../src/intel/vulkan/anv_cmd_buffer.c
(gdb) step
anv_UpdateDescriptorSets (_device=0x7fb5d25f8000, descriptorWriteCount=<optimized out>, pDescriptorWrites=<optimized out>, descriptorCopyCount=0, pDescriptorCopies=0x0)
    at ../../../../../src/intel/vulkan/anv_descriptor_set.c:660
660	../../../../../src/intel/vulkan/anv_descriptor_set.c: Datei oder Verzeichnis nicht gefunden.
(gdb) backtrace
#0  anv_UpdateDescriptorSets (_device=0x7fb5d25f8000, descriptorWriteCount=<optimized out>, pDescriptorWrites=<optimized out>, descriptorCopyCount=0, pDescriptorCopies=0x0)
    at ../../../../../src/intel/vulkan/anv_descriptor_set.c:660
#1  0x00007fb5f87d9ca4 in ?? ()
#2  0x00007fb600000000 in ?? ()
#3  0x0000000000000000 in ?? ()
(gdb) step
661	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
658	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
660	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
661	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
660	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
661	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
667	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
661	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
667	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) backtrace
#0  anv_UpdateDescriptorSets (_device=0x7fb5d25f8000, descriptorWriteCount=<optimized out>, pDescriptorWrites=<optimized out>, descriptorCopyCount=0, pDescriptorCopies=0x0)
    at ../../../../../src/intel/vulkan/anv_descriptor_set.c:667
#1  0x00007fb5f87d9ca4 in ?? ()
#2  0x00007fb600000000 in ?? ()
#3  0x0000000000000000 in ?? ()
(gdb) step
668	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
667	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
671	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
673	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
649	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) stepi
673	in ../../../../../src/intel/vulkan/anv_descriptor_set.c
(gdb) step
anv_fill_buffer_surface_state (device=0x7fb5d25f8000, state=..., format=ISL_FORMAT_R32G32B32A32_FLOAT, offset=0, range=8, stride=1) at ../../../../../src/intel/vulkan/anv_device.c:1966
1966	../../../../../src/intel/vulkan/anv_device.c: Datei oder Verzeichnis nicht gefunden.
(gdb) backtrace
#0  anv_fill_buffer_surface_state (device=0x7fb5d25f8000, state=..., format=ISL_FORMAT_R32G32B32A32_FLOAT, offset=0, range=8, stride=1)
    at ../../../../../src/intel/vulkan/anv_device.c:1966
#1  0x00007fb5d05e8a72 in anv_UpdateDescriptorSets (_device=0x7fb5d25f8000, descriptorWriteCount=<optimized out>, pDescriptorWrites=<optimized out>, descriptorCopyCount=0, 
    pDescriptorCopies=0x0) at ../../../../../src/intel/vulkan/anv_descriptor_set.c:673
#2  0x00007fb5f87d9ca4 in ?? ()
#3  0x00007fb600000000 in ?? ()
#4  0x0000000000000000 in ?? ()
(gdb) step
1965	in ../../../../../src/intel/vulkan/anv_device.c
(gdb) step
1966	in ../../../../../src/intel/vulkan/anv_device.c
(gdb) step
1965	in ../../../../../src/intel/vulkan/anv_device.c
(gdb) step
1966	in ../../../../../src/intel/vulkan/anv_device.c
(gdb) step
1965	in ../../../../../src/intel/vulkan/anv_device.c
(gdb) step
1966	in ../../../../../src/intel/vulkan/anv_device.c
(gdb) step
isl_buffer_fill_state_s (dev=0x7fb5d25f80a0, state=0x3000, info=0x7fb60f25c2a0) at ../../../../src/intel/isl/isl.c:1568
1568	../../../../src/intel/isl/isl.c: Datei oder Verzeichnis nicht gefunden.
(gdb) step
1569	in ../../../../src/intel/isl/isl.c
(gdb) step
1568	in ../../../../src/intel/isl/isl.c
(gdb) step
1569	in ../../../../src/intel/isl/isl.c
(gdb) step
1589	in ../../../../src/intel/isl/isl.c
(gdb) step
1569	in ../../../../src/intel/isl/isl.c
(gdb) step
1579	in ../../../../src/intel/isl/isl.c
(gdb) step
1582	in ../../../../src/intel/isl/isl.c
(gdb) step
isl_gen7_buffer_fill_state_s (state=0x3000, info=0x7fb60f25c2a0) at ../../../../src/intel/isl/isl_surface_state.c:623
623	../../../../src/intel/isl/isl_surface_state.c: Datei oder Verzeichnis nicht gefunden.
(gdb) step
624	in ../../../../src/intel/isl/isl_surface_state.c
(gdb) step
658	in ../../../../src/intel/isl/isl_surface_state.c
(gdb) step
685	in ../../../../src/intel/isl/isl_surface_state.c
(gdb) step
623	in ../../../../src/intel/isl/isl_surface_state.c
(gdb) step
698	in ../../../../src/intel/isl/isl_surface_state.c
(gdb) step
658	in ../../../../src/intel/isl/isl_surface_state.c
(gdb) step
1259	./genxml/gen7_pack.h: Datei oder Verzeichnis nicht gefunden.
(gdb) step
624	../../../../src/intel/isl/isl_surface_state.c: Datei oder Verzeichnis nicht gefunden.
(gdb) step
687	in ../../../../src/intel/isl/isl_surface_state.c
(gdb) step
1280	./genxml/gen7_pack.h: Datei oder Verzeichnis nicht gefunden.
(gdb) step
1274	in ./genxml/gen7_pack.h
(gdb) step

Thread 2 "java" received signal SIGSEGV, Segmentation fault.
isl_gen7_buffer_fill_state_s (state=0x3000, info=0x7fb60f25c2a0) at ./genxml/gen7_pack.h:1274
1274	in ./genxml/gen7_pack.h
(gdb) backtrace
#0  isl_gen7_buffer_fill_state_s (state=0x3000, info=0x7fb60f25c2a0) at ./genxml/gen7_pack.h:1274
#1  0x00007fb5d05eb348 in anv_fill_buffer_surface_state (device=0x7fb5d25f8000, state=..., format=<optimized out>, offset=<optimized out>, range=<optimized out>, stride=1)
    at ../../../../../src/intel/vulkan/anv_device.c:1966
#2  0x00007fb5d05e8a72 in anv_UpdateDescriptorSets (_device=0x7fb5d25f8000, descriptorWriteCount=<optimized out>, pDescriptorWrites=<optimized out>, descriptorCopyCount=0, 
    pDescriptorCopies=0x0) at ../../../../../src/intel/vulkan/anv_descriptor_set.c:673
#3  0x00007fb5f87d9ca4 in ?? ()
#4  0x00007fb600000000 in ?? ()
#5  0x0000000000000000 in ?? ()



Interesting to debug another ones program with gdb and git web view xD
Comment 3 Michael Watzko 2017-02-13 22:22:14 UTC
Just noticed

"../../../../../src/intel/vulkan/anv_image.c:203: FINISHME: Implement gen7 HiZ"

Release notes of meas 17 list "HiZ and performance improvements", seems I'll
need to test with mesa 17 as soon as it is available in the padoka ppa
Comment 4 Michael Watzko 2017-02-13 22:23:04 UTC
As well as


WARNING: 140609672133195, code 0: /usr/lib/i386-linux-gnu/libvulkan_radeon.so: falsche ELF-Klasse: ELFCLASS32
WARNING: 140609672133195, code 0: /usr/lib/i386-linux-gnu/libvulkan_intel.so: falsche ELF-Klasse: ELFCLASS32

It says "wrong elf-class"
Comment 5 Michael Watzko 2017-02-14 15:26:37 UTC
Turns out, I actually screwed up with the validation layers and close to nothing was logged, so the errors is:

ERROR: [139684814067950] Code 937 : vkUpdateDescriptorsSets() failed write update validation for Descriptor Set 0x38 with error: Attempting write update to descriptor set 0x38 binding #0 with type VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER but update type is VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER. For more information refer to Vulkan Spec Section '13.2.4. Descriptor Set Updates' which states 'descriptorType must match the type of dstBinding within dstSet' (https://www.khronos.org/registry/vulkan/specs/1.0-extensions/xhtml/vkspec.html#VkWriteDescriptorSet)

Which is quite bizarre since it works on nvidia - but I'll look into it.

Thanks for your help so far :)
Comment 6 Jason Ekstrand 2017-02-14 20:26:48 UTC
(In reply to MW from comment #5)
> Turns out, I actually screwed up with the validation layers and close to
> nothing was logged, so the errors is:
> 
> ERROR: [139684814067950] Code 937 : vkUpdateDescriptorsSets() failed write
> update validation for Descriptor Set 0x38 with error: Attempting write
> update to descriptor set 0x38 binding #0 with type
> VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER but update type is
> VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER. For more information refer to Vulkan Spec
> Section '13.2.4. Descriptor Set Updates' which states 'descriptorType must
> match the type of dstBinding within dstSet'
> (https://www.khronos.org/registry/vulkan/specs/1.0-extensions/xhtml/vkspec.
> html#VkWriteDescriptorSet)

That sounds very much like the kind of thing that would cause a segfault on our driver.

> Which is quite bizarre since it works on nvidia - but I'll look into it.

They implement descriptor sets differently.
Comment 7 Michael Watzko 2017-02-14 20:32:44 UTC
I got a (In reply to Jason Ekstrand from comment #6)
> (In reply to MW from comment #5)
> > Turns out, I actually screwed up with the validation layers and close to
> > nothing was logged, so the errors is:
> > 
> > ERROR: [139684814067950] Code 937 : vkUpdateDescriptorsSets() failed write
> > update validation for Descriptor Set 0x38 with error: Attempting write
> > update to descriptor set 0x38 binding #0 with type
> > VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER but update type is
> > VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER. For more information refer to Vulkan Spec
> > Section '13.2.4. Descriptor Set Updates' which states 'descriptorType must
> > match the type of dstBinding within dstSet'
> > (https://www.khronos.org/registry/vulkan/specs/1.0-extensions/xhtml/vkspec.
> > html#VkWriteDescriptorSet)
> 
> That sounds very much like the kind of thing that would cause a segfault on
> our driver.
> 
> > Which is quite bizarre since it works on nvidia - but I'll look into it.
> 
> They implement descriptor sets differently.

Since you are there, I got a "new" issue. Seems to be a shader compiler failure?
"Fehler beim lesen der Variable": "Error while reading the variable"

Thread 2 "java" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fa2472b3700 (LWP 23119)]
0x00007fa21d4a2b31 in brw::vec4_visitor::nir_emit_intrinsic (this=<optimized out>, instr=<optimized out>)
    at ../../../../../../../src/mesa/drivers/dri/i965/brw_vec4_nir.cpp:462
462	../../../../../../../src/mesa/drivers/dri/i965/brw_vec4_nir.cpp: Datei oder Verzeichnis nicht gefunden.
(gdb) backtrace
#0  0x00007fa21d4a2b31 in brw::vec4_visitor::nir_emit_intrinsic (this=<optimized out>, instr=<optimized out>)
    at ../../../../../../../src/mesa/drivers/dri/i965/brw_vec4_nir.cpp:462
#1  0x00007fa21d499be8 in brw::vec4_visitor::nir_emit_block (this=<optimized out>, block=<optimized out>)
    at ../../../../../../../src/mesa/drivers/dri/i965/brw_vec4_nir.cpp:215
#2  0x00007fa21d499b76 in brw::vec4_visitor::nir_emit_cf_list (this=<optimized out>, list=<optimized out>)
    at ../../../../../../../src/mesa/drivers/dri/i965/brw_vec4_nir.cpp:170
#3  0x00007fa21d499af8 in brw::vec4_visitor::nir_emit_impl (this=<optimized out>, impl=<optimized out>)
    at ../../../../../../../src/mesa/drivers/dri/i965/brw_vec4_nir.cpp:152
#4  0x00007fa21d499586 in brw::vec4_visitor::emit_nir_code (this=<optimized out>) at ../../../../../../../src/mesa/drivers/dri/i965/brw_vec4_nir.cpp:47
#5  0x00007fa21d489930 in brw::vec4_visitor::run (this=<optimized out>) at ../../../../../../../src/mesa/drivers/dri/i965/brw_vec4.cpp:2552
#6  0x00007fa21d489ba0 in brw_compile_vs (compiler=<optimized out>, log_data=<optimized out>, mem_ctx=<optimized out>, key=<optimized out>, 
    prog_data=<optimized out>, src_shader=<optimized out>, 
    clip_planes=<Fehler beim Lesen der Variable: Could not find the frame base for "brw_compile_vs(brw_compiler const*, void*, void*, brw_vs_prog_key const*, brw_vs_prog_data*, nir_shader const*, gl_clip_plane*, bool, int, unsigned int*, char**)".>, 
    use_legacy_snorm_formula=<Fehler beim Lesen der Variable: Could not find the frame base for "brw_compile_vs(brw_compiler const*, void*, void*, brw_vs_prog_key const*, brw_vs_prog_data*, nir_shader const*, gl_clip_plane*, bool, int, unsigned int*, char**)".>, 
    shader_time_index=<Fehler beim Lesen der Variable: Could not find the frame base for "brw_compile_vs(brw_compiler const*, void*, void*, brw_vs_prog_key const*, brw_vs_prog_data*, nir_shader const*, gl_clip_plane*, bool, int, unsigned int*, char**)".>, 
    final_assembly_size=<Fehler beim Lesen der Variable: Could not find the frame base for "brw_compile_vs(brw_compiler const*, void*, void*, brw_vs_prog_key const*, brw_vs_prog_data*, nir_shader const*, gl_clip_plane*, bool, int, unsigned int*, char**)".>, 
    error_str=<Fehler beim Lesen der Variable: Could not find the frame base for "brw_compile_vs(brw_compiler const*, void*, void*, brw_vs_prog_key const*, brw_vs_prog_data*, nir_shader const*, gl_clip_plane*, bool, int, unsigned int*, char**)".>) at ../../../../../../../src/mesa/drivers/dri/i965/brw_vec4.cpp:2835
#7  0x00007fa21d3e392e in anv_pipeline_compile_vs (pipeline=0x7fa21f364000, cache=0x7fa21f23f040, module=<optimized out>, entrypoint=<optimized out>, 
    spec_info=<optimized out>, info=<optimized out>) at ../../../../../src/intel/vulkan/anv_pipeline.c:484
#8  0x00007fa21d3e4b0a in anv_pipeline_init (pipeline=0x7fa21f364000, device=0x7fa21f3f9000, cache=<optimized out>, pCreateInfo=0x7fa240799b48, 
    alloc=0x7fa21f3f9008) at ../../../../../src/intel/vulkan/anv_pipeline.c:1216
#9  0x00007fa21d579c5b in gen7_CreateGraphicsPipelines (_device=0x7fa21f3f9000, pipelineCache=0x7fa21f23f040, count=1, pCreateInfos=<optimized out>, 
    pAllocator=0x0, pPipelines=0x7fa240362ce0) at ../../../../../src/intel/vulkan/genX_pipeline.c:1465
#10 0x00007fa209b95e0a in unique_objects::CreateGraphicsPipelines(VkDevice_T*, VkPipelineCache_T*, unsigned int, VkGraphicsPipelineCreateInfo const*, VkAllocationCallbacks const*, VkPipeline_T**) () from /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_unique_objects.so
#11 0x00007fa208f85e9c in core_validation::CreateGraphicsPipelines(VkDevice_T*, VkPipelineCache_T*, unsigned int, VkGraphicsPipelineCreateInfo const*, VkAllocationCallbacks const*, VkPipeline_T**) () from /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_core_validation.so
#12 0x00007fa208864a29 in object_tracker::CreateGraphicsPipelines(VkDevice_T*, VkPipelineCache_T*, unsigned int, VkGraphicsPipelineCreateInfo const*, VkAllocationCallbacks const*, VkPipeline_T**) () from /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_object_tracker.so
#13 0x00007fa2085006ed in parameter_validation::CreateGraphicsPipelines(VkDevice_T*, VkPipelineCache_T*, unsigned int, VkGraphicsPipelineCreateInfo const*, VkAllocationCallbacks const*, VkPipeline_T**) () from /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_parameter_validation.so
#14 0x00007fa208202c0e in threading::CreateGraphicsPipelines(VkDevice_T*, VkPipelineCache_T*, unsigned int, VkGraphicsPipelineCreateInfo const*, VkAllocationCallbacks const*, VkPipeline_T**) () from /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_threading.so


Since it states "brw_compile_vs", the vertex shader looks like that:

#version 450
#extension GL_ARB_separate_shader_objects : enable

layout(binding = 1) uniform UniformBufferObject {
    float surfaceWidth;
    float surfaceHeight;
//    float scale;
} ubo;

layout(push_constant) uniform PushConstants {
    int flagsPos;
    int flagsPass;
    float postOffsetX;
    float postOffsetY;
    mat4 modelView;
    vec4 color;
} push;

layout(location = 0)    in vec3     in_Position;
layout(location = 1)    in vec2     in_TextureCrd;

layout(location = 0   ) out vec2    pass_TextureCrd;
layout(location = 1000) out vec4    pass_Color;

const int FLAG_POS_ABS          = 0x1;
const int FLAG_PASS_TXT         = 0x1;
const int FLAG_PASS_CLR         = 0x2;
const int FLAG_PASS_PUSH_CLR    = 0x4;

void main(void) {
    vec4 pos = push.modelView * vec4(in_Position, 1.0f);

    gl_Position.z = pos.z;

    // [0;width] to [-1;1] and [0;height] to [-1;1]
    if ((push.flagsPos & FLAG_POS_ABS) != 0) {
        gl_Position.x = pos.x / (.5f * ubo.surfaceWidth ) + push.postOffsetX;
	    gl_Position.y = pos.y / (.5f * ubo.surfaceHeight) + push.postOffsetY;

    } else {
        gl_Position.x = pos.x + push.postOffsetX;
	    gl_Position.y = pos.y + push.postOffsetY;
    }



    // parameters to pass along
    pass_TextureCrd = in_TextureCrd;
    pass_Color      = push.color;
}

I am about to test it with a simpler shader, but desktop ~ laptop sync is
slow atm :/
Comment 8 Michael Watzko 2017-02-14 20:43:41 UTC
I forgot to mention, I switched the ppa for a more recent version:

17.1.0-devel - padoka PPA

deb http://ppa.launchpad.net/paulo-miguel-dias/mesa/ubuntu xenial main
deb-src http://ppa.launchpad.net/paulo-miguel-dias/mesa/ubuntu xenial main
Comment 9 Michael Watzko 2017-02-14 21:05:51 UTC
In case that helps you, the current output including the validation debug lines (info+warning+error) 



 available extension: VK_KHR_surface
 available extension: VK_KHR_xcb_surface
 available extension: VK_KHR_xlib_surface
 available extension: VK_KHR_get_physical_device_properties2
 available extension: VK_EXT_debug_report
added debug extension: VK_EXT_debug_report
ext flipped: VK_KHR_surface
ext flipped: VK_KHR_xlib_surface
ext flipped: VK_EXT_debug_report
----------------
Engine name:    vulkan2d
Engine version: 0
Vulkan API min: 4194304
----------------
App short name: HelloVulkan
App long name:  Vulkan Hello World
App version:    0
----------------
 + required instance layers: VK_LAYER_LUNARG_standard_validation
 + required instance layers: VK_LAYER_LUNARG_core_validation
 + required instance layers: VK_LAYER_LUNARG_image
 + required instance layers: VK_LAYER_LUNARG_object_tracker
 + required instance layers: VK_LAYER_LUNARG_parameter_validation
 + required instance layers: VK_LAYER_LUNARG_swapchain
 + required instance layers: VK_LAYER_GOOGLE_threading
 + required instance layers: VK_LAYER_GOOGLE_unique_objects
 + required instance layers: VK_LAYER_LUNARG_object_tracker
 + required instance layers: VK_LAYER_LUNARG_core_validation
 + required instance extension: VK_KHR_surface
 + required instance extension: VK_KHR_xlib_surface
 + required instance extension: VK_EXT_debug_report

Going to request vkCreateInstance

?? unknown debug flag:16: 139921312660043, code 0: Searching the following paths for manifest files: /share/home/michael/projects/java.vulkan/vulkan_layers

?? unknown debug flag:16: 139921312660043, code 0: Searching the following paths for manifest files: //etc/vulkan/implicit_layer.d:/usr/share/vulkan/implicit_layer.d

?? unknown debug flag:16: 139921312660043, code 0: Searching the following paths for manifest files: /share/home/michael/.local/share/vulkan/implicit_layer.d

INFO: [139921312660043] Code 0 : Found manifest file /share/home/michael/projects/java.vulkan/vulkan_layers/VkLayer_swapchain.json, version "1.0.0"
INFO: [139921312660043] Code 0 : Found manifest file /share/home/michael/projects/java.vulkan/vulkan_layers/VkLayer_image.json, version "1.0.0"
INFO: [139921312660043] Code 0 : Found manifest file /share/home/michael/projects/java.vulkan/vulkan_layers/VkLayer_parameter_validation.json, version "1.0.0"
INFO: [139921312660043] Code 0 : Found manifest file /share/home/michael/projects/java.vulkan/vulkan_layers/VkLayer_threading.json, version "1.0.0"
INFO: [139921312660043] Code 0 : Found manifest file /share/home/michael/projects/java.vulkan/vulkan_layers/VkLayer_unique_objects.json, version "1.0.0"
INFO: [139921312660043] Code 0 : Found manifest file /share/home/michael/projects/java.vulkan/vulkan_layers/VkLayer_core_validation.json, version "1.0.0"
INFO: [139921312660043] Code 0 : Found manifest file /share/home/michael/projects/java.vulkan/vulkan_layers/VkLayer_object_tracker.json, version "1.0.0"
INFO: [139921312660043] Code 0 : Found manifest file /share/home/michael/.local/share/vulkan/implicit_layer.d/steamoverlay_i386.json, version "1.0.0"
INFO: [139921312660043] Code 0 : Found manifest file /share/home/michael/.local/share/vulkan/implicit_layer.d/steamoverlay_x86_64.json, version "1.0.0"
INFO: [139921312660043] Code 0 : Found meta layer VK_LAYER_LUNARG_standard_validation, replacing with actual layer group
?? unknown debug flag:16: 139921312660043, code 0: Searching the following paths for manifest files: //etc/vulkan/icd.d:/usr/share/vulkan/icd.d

?? unknown debug flag:16: 139921312660043, code 0: Searching the following paths for manifest files: /share/home/michael/.local/share/vulkan/icd.d

INFO: [139921312660043] Code 0 : Found manifest file //etc/vulkan/icd.d/radeon_icd.i686.json, version "1.0.0"
?? unknown debug flag:16: 139921312660043, code 0: Searching for ICD drivers named /usr/lib/i386-linux-gnu/libvulkan_radeon.so default dir 

WARNING: [139921312660043] Code 0 : /usr/lib/i386-linux-gnu/libvulkan_radeon.so: falsche ELF-Klasse: ELFCLASS32
INFO: [139921312660043] Code 0 : Found manifest file //etc/vulkan/icd.d/intel_icd.i686.json, version "1.0.0"
?? unknown debug flag:16: 139921312660043, code 0: Searching for ICD drivers named /usr/lib/i386-linux-gnu/libvulkan_intel.so default dir 

WARNING: [139921312660043] Code 0 : /usr/lib/i386-linux-gnu/libvulkan_intel.so: falsche ELF-Klasse: ELFCLASS32
INFO: [139921312660043] Code 0 : Found manifest file //etc/vulkan/icd.d/intel_icd.x86_64.json, version "1.0.0"
?? unknown debug flag:16: 139921312660043, code 0: Searching for ICD drivers named /usr/lib/x86_64-linux-gnu/libvulkan_intel.so default dir 

INFO: [139921312660043] Code 0 : Found manifest file //etc/vulkan/icd.d/radeon_icd.x86_64.json, version "1.0.0"
?? unknown debug flag:16: 139921312660043, code 0: Searching for ICD drivers named /usr/lib/x86_64-linux-gnu/libvulkan_radeon.so default dir 

?? unknown debug flag:16: 139921312660043, code 0: Build ICD instance extension list
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_surface (/usr/lib/x86_64-linux-gnu/libvulkan_intel.so) version 0.0.25
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_xcb_surface (/usr/lib/x86_64-linux-gnu/libvulkan_intel.so) version 0.0.6
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_xlib_surface (/usr/lib/x86_64-linux-gnu/libvulkan_intel.so) version 0.0.6
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_get_physical_device_properties2 (/usr/lib/x86_64-linux-gnu/libvulkan_intel.so) version 0.0.1
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_surface (/usr/lib/x86_64-linux-gnu/libvulkan_radeon.so) version 0.0.25
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_xcb_surface (/usr/lib/x86_64-linux-gnu/libvulkan_radeon.so) version 0.0.6
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_xlib_surface (/usr/lib/x86_64-linux-gnu/libvulkan_radeon.so) version 0.0.6
?? unknown debug flag:16: 139921312660043, code 0: Chain: instance: Loading layer library /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_unique_objects.so
INFO: [139921312660043] Code 0 : Insert instance layer VK_LAYER_GOOGLE_unique_objects (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_unique_objects.so)
?? unknown debug flag:16: 139921312660043, code 0: Chain: instance: Loading layer library /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_swapchain.so
INFO: [139921312660043] Code 0 : Insert instance layer VK_LAYER_LUNARG_swapchain (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_swapchain.so)
?? unknown debug flag:16: 139921312660043, code 0: Chain: instance: Loading layer library /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_core_validation.so
INFO: [139921312660043] Code 0 : Insert instance layer VK_LAYER_LUNARG_core_validation (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_core_validation.so)
?? unknown debug flag:16: 139921312660043, code 0: Chain: instance: Loading layer library /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_image.so
INFO: [139921312660043] Code 0 : Insert instance layer VK_LAYER_LUNARG_image (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_image.so)
?? unknown debug flag:16: 139921312660043, code 0: Chain: instance: Loading layer library /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_object_tracker.so
INFO: [139921312660043] Code 0 : Insert instance layer VK_LAYER_LUNARG_object_tracker (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_object_tracker.so)
?? unknown debug flag:16: 139921312660043, code 0: Chain: instance: Loading layer library /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_parameter_validation.so
INFO: [139921312660043] Code 0 : Insert instance layer VK_LAYER_LUNARG_parameter_validation (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_parameter_validation.so)
?? unknown debug flag:16: 139921312660043, code 0: Chain: instance: Loading layer library /share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_threading.so
INFO: [139921312660043] Code 0 : Insert instance layer VK_LAYER_GOOGLE_threading (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_threading.so)
?? unknown debug flag:16: 139921312660043, code 0: Build ICD instance extension list
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_surface (/usr/lib/x86_64-linux-gnu/libvulkan_intel.so) version 0.0.25
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_xcb_surface (/usr/lib/x86_64-linux-gnu/libvulkan_intel.so) version 0.0.6
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_xlib_surface (/usr/lib/x86_64-linux-gnu/libvulkan_intel.so) version 0.0.6
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_get_physical_device_properties2 (/usr/lib/x86_64-linux-gnu/libvulkan_intel.so) version 0.0.1
?? unknown debug flag:16: 139921312660043, code 0: Build ICD instance extension list
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_surface (/usr/lib/x86_64-linux-gnu/libvulkan_radeon.so) version 0.0.25
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_xcb_surface (/usr/lib/x86_64-linux-gnu/libvulkan_radeon.so) version 0.0.6
?? unknown debug flag:16: 139921312660043, code 0: Instance Extension: VK_KHR_xlib_surface (/usr/lib/x86_64-linux-gnu/libvulkan_radeon.so) version 0.0.6
?? unknown debug flag:16: 139920593888188, code 1: Added callback
?? unknown debug flag:16: 139920591357559, code 1: Added callback
?? unknown debug flag:16: 139920451543119, code 1: Added callback
?? unknown debug flag:16: 139920591357559, code 1: Added callback
WARNING: Ivy Bridge Vulkan support is incomplete
Available VkPhysicalDevice: Intel(R) Ivybridge Mobile
 ensure: VK_KHR_swapchain
INFO: [139920573865728] Code 0 : OBJ[0x2] : CREATE Debug Report object 0x7f421c67f5d0
INFO: [139920573865728] Code 0 : OBJ[0x3] : CREATE SurfaceKHR object 0x1
INFO: [139921312660043] Code 0 : Insert device layer VK_LAYER_GOOGLE_unique_objects (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_unique_objects.so)
INFO: [139921312660043] Code 0 : Insert device layer VK_LAYER_LUNARG_swapchain (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_swapchain.so)
INFO: [139921312660043] Code 0 : Insert device layer VK_LAYER_LUNARG_core_validation (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_core_validation.so)
INFO: [139921312660043] Code 0 : Insert device layer VK_LAYER_LUNARG_image (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_image.so)
INFO: [139921312660043] Code 0 : Insert device layer VK_LAYER_LUNARG_object_tracker (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_object_tracker.so)
INFO: [139921312660043] Code 0 : Insert device layer VK_LAYER_LUNARG_parameter_validation (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_parameter_validation.so)
INFO: [139921312660043] Code 0 : Insert device layer VK_LAYER_GOOGLE_threading (/share/home/michael/projects/java.vulkan/vulkan_layers/./libVkLayer_threading.so)
INFO: [139920573865728] Code 0 : OBJ[0x4] : CREATE Device object 0x7f41f9df9000
INFO: [139920573865728] Code 0 : OBJ[0x5] : CREATE Queue object 0x7f41f9df97e0
INFO: [139920573865728] Code 0 : OBJ[0x6] : CREATE Command Pool object 0x2
INFO: [139920573865728] Code 0 : OBJ[0x7] : CREATE VK_DEBUG_REPORT_OBJECT_TYPE_COMMAND_BUFFER_EXT object 0x7f41f9d30000
INFO: [139920573865728] Code 0 : OBJ[0x8] : CREATE SwapchainKHR object 0x3
INFO: [139920573865728] Code 0 : OBJ[0x9] : CREATE SwapchainImage object 0x4
INFO: [139920573865728] Code 0 : OBJ[0xa] : CREATE SwapchainImage object 0x5
INFO: [139920573865728] Code 0 : OBJ[0xb] : CREATE SwapchainImage object 0x6
INFO: [139920573865728] Code 0 : OBJ[0xc] : CREATE Image View object 0x7
INFO: [139920573865728] Code 0 : OBJ[0xd] : CREATE Image View object 0x8
INFO: [139920573865728] Code 0 : OBJ[0xe] : CREATE Image View object 0x9
../../../../../src/intel/vulkan/anv_image.c:203: FINISHME: Implement gen7 HiZ
INFO: [139920573865728] Code 0 : OBJ[0xf] : CREATE Image object 0xa
INFO: [139920573865728] Code 0 : OBJ[0x10] : CREATE Device Memory object 0xb
INFO: [139920573865728] Code 0 : OBJ[0x11] : CREATE VK_DEBUG_REPORT_OBJECT_TYPE_COMMAND_BUFFER_EXT object 0x7f41f9d31800
INFO: [139920573865728] Code 0 : OBJ[0x12] : CREATE Image View object 0xc
INFO: [139920573865728] Code 0 : OBJ[0x13] : CREATE Render Pass object 0xd
INFO: [139920573865728] Code 0 : OBJ[0x14] : CREATE Buffer object 0xe
INFO: [139920573865728] Code 0 : OBJ[0x15] : CREATE Device Memory object 0xf
INFO: [139920573865728] Code 0 : OBJ[0x16] : CREATE Descriptor Set Layout object 0x10
INFO: [139920573865728] Code 0 : OBJ[0x17] : CREATE Pipeline Layout object 0x11
INFO: [139920582343844] Code 26 : Created Descriptor Pool 0x12
INFO: [139920573865728] Code 0 : OBJ[0x18] : CREATE Descriptor Pool object 0x12
INFO: [139920573865728] Code 0 : OBJ[0x19] : CREATE Shader Module object 0x13
INFO: [139920573865728] Code 0 : OBJ[0x1a] : CREATE Shader Module object 0x14
INFO: [139920573865728] Code 0 : OBJ[0x1b] : CREATE Pipeline Cache object 0x15
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007f41cfc84b31, pid=3316, tid=0x00007f4225de0700
#
# JRE version: Java(TM) SE Runtime Environment (8.0_121-b13) (build 1.8.0_121-b13)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.121-b13 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C  [libvulkan_intel.so+0x100b31]
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /share/home/michael/projects/java.vulkan/hs_err_pid3316.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

Process finished with exit code 134 (interrupted by signal 6: SIGABRT)
Comment 10 Michael Watzko 2017-02-15 00:00:13 UTC
I nailed it down. Its about the vertex shader.

With another spirv shader code my little aplication started working on the intel machine (well, with wrong results, but no sigsegvs' or what so ever).

I copied the shader code from here: https://github.com/LWJGL/lwjgl3/blob/master/modules/core/src/test/java/org/lwjgl/demo/vulkan/HelloVulkan.java
 (see vertShaderCode and fragShaderCode).

Since I don't know the source code of it, I started to simplify mine. And as soon
as I removed "pass_Color = push.color;" it worked. With it, given SIGSEGV.
Comment 11 Michael Watzko 2017-02-15 00:27:26 UTC
Well, setting the location from 1000 to 1 also fixes it (of course that includes updating the location in the fragment shader).

Well... it could have nearly worked yesterday, since I just changed it for a bigger refactoring :/

Is there anywhere by definition written that location needs to be ascending without leaving one empty in between?

...

Just had a look at vulkaninfo... whooops. So they need to be lower than max
but not only in sum less than max?

$ vulkaninfo | grep -i attri
WARNING: Ivy Bridge Vulkan support is incomplete
		maxVertexInputAttributes                = 31
Comment 12 Michael Watzko 2017-02-15 00:29:58 UTC
BTW: nvidia says max 32, but still works

Sorry for that spam *feels guilty* ^_^;
Comment 13 Jason Ekstrand 2017-02-18 06:32:54 UTC
I'm going to close this for now.  Feel free to re-open if you find an actual bug.


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