13837 – [GLSL] glean/glsl1 fail: gl_FrontFacing var (1)

Bug 13837 - [GLSL] glean/glsl1 fail: gl_FrontFacing var (1)

Summary: [GLSL] glean/glsl1 fail: gl_FrontFacing var (1)

Status:	VERIFIED FIXED

Alias:	None

Product:	Mesa
Classification:	Unclassified
Component:	Drivers/DRI/i965 (show other bugs)
Version:	git
Hardware:	All Linux (All)

Importance:	high normal
Assignee:	Zou Nan hai
QA Contact:

URL:
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2007-12-28 00:22 UTC by Gordon Jin
Modified:	2009-08-24 12:28 UTC (History)
CC List:	3 users (show)

See Also:
i915 platform:
i915 features:

Attachments
implement gl_FrontFacing for 965 (1.96 KB, patch) 2008-01-31 20:59 UTC, Eric Anholt	Details \| Splinter Review
View All

Description Gordon Jin 2007-12-28 00:22:05 UTC

System Environment:
--------------------------
Platform: Q965
Arch: 32-bit
Xf86_video_intel:		d9df93578b74785c08ba860b4c9aa23b0c89c91c
Drm:		b9417f41418321d5081547a3a3386dcccae7541f
Mesa:		aac2d99dc316c069faa46dd43ff034155754c6b3
Kernel:		2.6.23
Glean:		Tip of CVS

Bug detailed description:
--------------------------
glean/glsl1 have 3 fails with the latest mesa master. This bug report is targeted for the 1st failure:
FAILURE:
  Shader test: gl_FrontFacing var (1)
  Expected color: 0.5, 0.5, 0.5, 0.5
  Observed color: 0, 0, 0, 0

this happens whether or not INTEL_NO_TTM set.


Reproduce steps:
----------------
run glean case glsl by:
./glean -r ResultDir -t glsl1

Comment 1 Eric Anholt 2008-01-16 13:57:43 UTC

I'm failing to reproduce this one with mesa master on my 965.

Comment 2 Colin.Joe 2008-01-20 19:04:47 UTC

this bug can be produced on latest mesa master .

Comment 3 Eric Anholt 2008-01-31 20:59:24 UTC

Created attachment 14065 [details] [review]
implement gl_FrontFacing for 965

This was my test patch to try to get gl_FrontFacing to work.  While it gets the test to pass, it breaks fogging for reasons I can't understand.

Comment 4 Zou Nan hai 2008-02-13 17:39:22 UTC

Thanks Eric, 
writemask is not working in align_1 mode, that is why fog is broken.
Fixed in mesa commit 08fd2488b011db78ebf7eafbf6ea61d5444ffe7c

Comment 5 Colin.Joe 2008-02-20 00:06:12 UTC

this bug has been fixed .

Comment 6 Adam Jackson 2009-08-24 12:28:59 UTC

Mass version move, cvs -> git

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