Bug 12176 - 1D depth texture with GL_LUMINANCE mode is incorrect
Summary: 1D depth texture with GL_LUMINANCE mode is incorrect
Status: VERIFIED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i915 (show other bugs)
Version: git
Hardware: Other Linux (All)
: medium normal
Assignee: haihao
QA Contact:
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Depends on:
Blocks:
 
Reported: 2007-08-26 23:58 UTC by Shuang He
Modified: 2009-08-24 12:27 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

Attachments
test case (3.33 KB, application/octet-stream)
2007-08-26 23:59 UTC, Shuang He 		Details
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Description Shuang He 2007-08-26 23:58:06 UTC 
on 945G(64bit), 915GV(64bit), 945GM(32bit), 
1D depth texture, with GL_LUMINANCE mode is not correct.
according to the OpenGL spec, when compare mode is set to GL_LEQUAL
r = 1.0, when R <= Dt
r = 0.0, when R > Dt

and then r is treated as luminance component. so it can only be 
(0.0, 0.0, 0.0), or (1.0, 1.0, 1.0)
for RGB components.
And, this work well in non-dri mode.
Comment 1 Shuang He 2007-08-26 23:59:42 UTC 
Created attachment 11288 [details]
test case
Comment 2 Zou Nan hai 2008-03-25 23:07:27 UTC 
Fixed in mesa
Comment 3 Shuang He 2008-03-27 23:04:22 UTC 
with git tip mesa, this issue still exists:

[root@x-945gm mycase]# ./fdo_12176
(15, 30) = (0.250980, 0.250980, 0.250980, 1.000000), should be (0.000000, 0.000000, 0.000000, 1.000000)
(45, 30) = (0.501961, 0.501961, 0.501961, 1.000000), should be (1.000000, 1.000000, 1.000000, 1.000000)
Comment 4 Michael Fu 2008-07-03 19:26:00 UTC 
haihao, would you please double check nanhai's patch? thanks.
Comment 5 haihao 2008-07-08 22:26:49 UTC 
fixed in mesa 75e4db18049f3284197c9a8deabd9dd74aa7920e
Comment 6 Shuang He 2008-10-12 19:06:34 UTC 
verified
Comment 7 Adam Jackson 2009-08-24 12:27:53 UTC 
Mass version move, cvs -> git

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