622836 - [OSX] ray tracing demo causes OS level GL corruption, hangs / locks machine

Status: RESOLVED WORKSFORME

(Core :: Graphics: CanvasWebGL, defect)

Description

[Mike Beltzner [:beltzner, not reading bugmail]]

The demo at http://www.lewpen.com/articles/3d-graphics/webgl/realtime-raytracer/raytracer-008-bumpy-textures/ reliably causes my 3-year old 13" MacBook to lock up and hang with corruption at what seems to be the OS level. I made a video of the symptom:

http://www.youtube.com/watch?v=tj-Qep9COoQ

Here's my graphics driver information from about:support

Adapter Description  0x22600,0x20400
Vendor ID            0000
Device ID            0000
Adapter RAM
Adapter Drivers
Driver Version
Driver Date
Direct2D Enabled     false
DirectWrite Enabled  false
WebGL Renderer       NVIDIA Corporation -- NVIDIA GeForce 9400M OpenGL Engine -- 2.1 NVIDIA-1.6.24GPU 
Accelerated Windows  1/1 OpenGL

Comment 1

[Dan Mills [:thunder]]

The bug does not show up on my new MacBook Air. Here's my graphics card info:

WebGL Renderer       NVIDIA Corporation -- NVIDIA GeForce 320M OpenGL Engine -- 2.1 NVIDIA-1.6.24

(the rest of the graphics section on about:support is identical to Beltzner's)

Comment 2

[Dave Townsend [:mossop]]

WFM with:

Adapter Description  0x22600,0x20400
Vendor ID            0000
Device ID            0000
Adapter RAM
Adapter Drivers
Driver Version
Driver Date
Direct2D Enabled     false
DirectWrite Enabled  false
WebGL Renderer       NVIDIA Corporation -- NVIDIA GeForce 9400M OpenGL Engine -- 2.1 NVIDIA-1.6.24GPU
Accelerated Windows  1/1 OpenGL

Comment 3

[Dave Townsend [:mossop]]

Note that I have an ~1 year old 13" MBP

Comment 4

[Dan Mills [:thunder]]

Cc Brian, his ~1yo MBP does fail.

Comment 5

[Brian Brennan]

Fails for me.

My about:support doesn't have a WebGL Renderer line and the rest is identical to Beltzner's. Here's the information from System Profiler:

  Chipset Model:	NVIDIA GeForce 9400M
  Type:	GPU
  Bus:	PCI
  VRAM (Total):	256 MB
  Vendor:	NVIDIA (0x10de)
  Device ID:	0x0863
  Revision ID:	0x00b1
  ROM Revision:	3448

Comment 6

[Benoit Jacob [:bjacob] (mostly away)]

Attachment: patch dumping shader sources

just some instrumentation to help understand this bug

Comment 7

[Benoit Jacob [:bjacob] (mostly away)]

Attachment: shader sources passed to compileShader()

This is all the shaders that are passed to compileShader() in this demo.

Next step, in a rational world, would be to bisect them.

Comment 8

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

Note that you're looking at the shader sources pre-ANGLE translation; I think you want to look at both pre and post.  There shouldn't be much difference for these shaders, but you never know.

Comment 9

[Benoit Jacob [:bjacob] (mostly away)]

(In reply to comment #8)
> Note that you're looking at the shader sources pre-ANGLE translation; I think
> you want to look at both pre and post.  There shouldn't be much difference for
> these shaders, but you never know.

Mike confirmed that the problem persisted with webgl.shader_validator=false. But yes, someone bisecting this should keep that pref set to false.

Comment 10

[Joe Drew (not getting mail)]

Can someone tell me whether Chrome suffers the same issues?

Comment 11

[Brian Brennan]

(In reply to comment #10)
> Can someone tell me whether Chrome suffers the same issues?

I just tested on Chrome 10.0.612.3 dev, it suffers the same issue.

Comment 12

[Joe Drew (not getting mail)]

Thanks, Brian! I'm going to report this bug to Apple.

This can't block, because there doesn't seem to be much we can do about it (it's an OS bug).

Comment 13

[Brian Brennan]

Attachment: System Profiler dump

Here's a dump from my system profiler.

Comment 15

[Benoit Jacob [:bjacob] (mostly away)]

What Mac OS versions are we talking about here? Can anyone reproduce this issue on 10.6 ?

Comment 16

[Joe Drew (not getting mail)]

This happens on 10.6, yeah. It's a known bug in OS X.

Comment 18

[Kelsey Gilbert [:jgilbert]]

WFM, but can I get confirmation if this is still a problem on the affected systems?

Comment 19

[Kelsey Gilbert [:jgilbert]]

After a year and half of no comments, I'm marking this WFM.
Please reopen if this reproduces for you.