Bug 102516

Summary:	regression on glsl shaders on BE architecture mesa-17.2.0-rc6
Product:	Mesa	Reporter:	intermediadc <intermediadc>
Component:	glsl-compiler	Assignee:	mesa-dev
Status:	RESOLVED FIXED	QA Contact:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity:	normal
Priority:	medium
Version:	git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description intermediadc@hotmail.com 2017-09-02 08:49:01 UTC

when i run software that need shaders on mesa-17.2.0-rc6 
i have black windows with this comments:

Qemu:
./qemu-system-ppc64 -m 1024 -cpu G4 -display sdl,gl=on -M mac99
qemu_gl_create_compile_shader: compile vertex error
0:4(9): error: syntax error, unexpected $end, expecting ',' or ';'

qemu_gl_create_compile_shader: compile fragment error
0:4(19): error: syntax error, unexpected $end, expecting ',' or ';'



This is with Darkplace quake:
(line offset for any above warnings/errors: 50)
GLSL shader glsl/default.glsl depth/shadow failed!  some features may not work properly.
vertex shader compile log:
0:91(17): error: syntax error, unexpected $end, expecting ';'

Hope will help build

Comment 1 intermediadc@hotmail.com 2017-09-07 10:01:08 UTC

Tested on 17.2 offical and same issue 
this come on Mame

 mame -w
../../../../../src/osd/modules/opengl/gl_shader_tool.cpp:358: GL Error: object 0x1 compilation failed
../../../../../src/osd/modules/opengl/gl_shader_tool.cpp:358 glInfoLog: 0:2(6): error: syntax error, unexpected $end, expecting ',' or ';'

failed to process shader: <
void main()
{
   gl_TexCoord[0]  = gl_TextureMatrix[0] * gl_MultiTexCoord0;
   gl_Position     = ftransform();
}

Comment 2 Emil Velikov 2017-09-08 11:09:01 UTC

Shader shown seems fine. Can you bisect mesa to track the offending commit?

Comment 3 intermediadc@hotmail.com 2017-09-08 11:18:16 UTC

hi emil i can try but im not the best to this things .
if you gave me an hand step by step i can try. for sure the issue come after rc4 that was for sure the last i was build and was working ok on my system

Comment 4 Eero Tamminen 2017-09-08 13:22:14 UTC

If you have a working Apitrace trace, ezBench could be used to automatically bisect which Mesa commits cause changes in rendering i.e. regresses it.

ezBench is here:
  https://cgit.freedesktop.org/ezbench

You need to set up "user_parameters.sh" file so that ezBench can build Mesa & run it with Apitrace, and have a folder with the apitrace trace file used for render validation + a file which tells which frame in the trace is used for comparison.

README tells how to setup & use ezBench.  I will add some documentation on how to do the Apitrace validation (to the example parameter file).

Comment 5 intermediadc@hotmail.com 2017-10-10 06:57:40 UTC

Hi Emil and Aero,
the issue is fixed i had been tested with last mesa git.
but new one come if i build with radeonsi, amdgpu and with an ld error.
i will open a new bug report.

thanks
Luigi

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