[Bug 82920] Invalid read during geometry program build

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82920

Glenn Kennard  changed:

   What|Removed |Added

  Component|Drivers/Gallium/r600|glsl-compiler
   Assignee|dri-devel at lists.freedesktop |idr at freedesktop.org
   |.org|
 QA Contact||intel-3d-bugs at lists.freedes
   ||ktop.org

--- Comment #4 from Glenn Kennard  ---
Testing "fixed_mc" with a debug-enabled mesa build I get:

Mesa: User error: GL_INVALID_ENUM in glGetString(GL_EXTENSIONS)
- this is from GLFW as far as i can tell, its trying to get the extension
string using the old method which is not supported in a >= 3.3 core context.
Otherwise unrelated to this bug though.

valgrind:
==30990== Invalid read of size 8
==30990==at 0x9F90847: ast_interface_block::hir(exec_list*,
_mesa_glsl_parse_state*) (ast_to_hir.cpp:5688)
==30990==by 0x9F875FC: _mesa_ast_to_hir(exec_list*,
_mesa_glsl_parse_state*) (ast_to_hir.cpp:100)
==30990==by 0x9FDB07A: _mesa_glsl_compile_shader
(glsl_parser_extras.cpp:1462)
==30990==by 0x9EB843D: compile_shader (shaderapi.c:849)
==30990==by 0x9EBA1AD: _mesa_create_shader_program (shaderapi.c:1830)
==30990==by 0x9EBA7C7: _mesa_CreateShaderProgramv (shaderapi.c:1919)
==30990==by 0x6C29EED: shared_dispatch_stub_892 (glapi_mapi_tmp.h:20555)
==30990==by 0x404B0D: main (in /recording/download/20140803/mc/mc)

and a number of further errors in that function, then later the gallium state
tracker throws an assertion:
../../src/mesa/state_tracker/st_glsl_to_tgsi.cpp:2104:visit: Assertion
`var->data.location != -1' failed.

In release mode this check drops through and the r600 tgsi translator rejects
it with:
EE ../../../../../../src/gallium/drivers/r600/r600_shader.c:353
tgsi_is_supported - unsupported src 0 (dimension 1)
and replaces the shader with a no-op dummy shader to not crash.


Basically the gallium driver layer is getting bad data out from the GLSL
compiler.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-- next part --
An HTML attachment was scrubbed...
URL: 

[Bug 82920] Invalid read during geometry program build

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82920

--- Comment #3 from pavol at klacansky.com ---
I tested modified version and it still crashes

-- 
You are receiving this mail because:
You are the assignee for the bug.
-- next part --
An HTML attachment was scrubbed...
URL: 

[Bug 82920] Invalid read during geometry program build

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82920

Alex Deucher  changed:

   What|Removed |Added

 Attachment #105095|text/plain  |application/x-gzip
  mime type||

-- 
You are receiving this mail because:
You are the assignee for the bug.
-- next part --
An HTML attachment was scrubbed...
URL: 

[Bug 82920] Invalid read during geometry program build

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82920

--- Comment #2 from pavol at klacansky.com ---
I have tested new version on nvidia driver and test it on mesa when I get home.
In original version there was a bug where UBOs were not binded (I am not sure
if KHR_debug should report this).

-- 
You are receiving this mail because:
You are the assignee for the bug.
-- next part --
An HTML attachment was scrubbed...
URL: 

[Bug 82920] Invalid read during geometry program build

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82920

--- Comment #1 from pavol at klacansky.com ---
Created attachment 105095
  --> https://bugs.freedesktop.org/attachment.cgi?id=105095=edit
fixed mc

-- 
You are receiving this mail because:
You are the assignee for the bug.
-- next part --
An HTML attachment was scrubbed...
URL: 

[Bug 82920] Invalid read during geometry program build

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82920

pavol at klacansky.com changed:

   What|Removed |Added

   Hardware|Other   |x86-64 (AMD64)
 OS|All |Linux (All)

-- 
You are receiving this mail because:
You are the assignee for the bug.
-- next part --
An HTML attachment was scrubbed...
URL: