Bug 60541

Summary:	[r300g, bisected] Some piglit NV_conditional_render tests fails
Product:	Mesa	Reporter:	Pavel Ondračka <pavel.ondracka>
Component:	Drivers/Gallium/r300	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED WONTFIX	QA Contact:
Severity:	normal
Priority:	medium	CC:	maraeo
Version:	git	Keywords:	regression
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Pavel Ondračka 2013-02-09 13:34:29 UTC

Faling tests are: 
nv_conditional_render-bitmap
nv_conditional_render-clear
nv_conditional_render-copypixels
nv_conditional_render-dlist
nv_conditional_render-drawpixels
nv_conditional_render-vertex_array

./bin/nv_conditional_render-bitmap -auto
r300: DRM version: 2.24.0, Name: ATI RV530, ID: 0x71c5, GB: 1, Z: 2
r300: GART size: 509 MB, VRAM size: 256 MB
r300: AA compression RAM: YES, Z compression RAM: YES, HiZ RAM: YES
Probe at (0,0)
  Expected: 0.000000 1.000000 0.000000 0.000000
  Observed: 0.498039 0.498039 0.498039 0.498039
PIGLIT: {'result': 'fail' }

First bad commit:
commit 62cba629c09aaf236b2750785b899934b531b17a
Author: Marek Olšák <maraeo@gmail.com>
Date:   Sun Dec 2 04:40:36 2012 +0100

    Revert "r300g: fix occlusion queries when depth test is disabled or zbuffer 
    
    It broke Hyper-Z terribly.

GPU:RV530
Mesa: 0e2f26d5ea26febd16173aa8bbf7427b090e320f
Kernel: 3.7.3-101.fc17.i686
Libdrm: 20c5607b57da113ca1a29caaa5a52eaf83808dff

Comment 1 Marek Olšák 2013-02-10 00:37:56 UTC

This won't be fixed. The commit which broke the tests fixes HyperZ and everybody wants HyperZ.

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