Bug 13614

Summary:	[i915] glBitmap works incorrectly after glDrawPixels() call
Product:	Mesa	Reporter:	Shuang He <shuang.he>
Component:	Drivers/DRI/i915	Assignee:	haihao <haihao.xiang>
Status:	VERIFIED FIXED	QA Contact:
Severity:	normal
Priority:	medium	CC:	dri-devel, haihao.xiang
Version:	unspecified
Hardware:	Other
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:
Attachments:	test case xorg conf

Description Shuang He 2007-12-11 23:35:36 UTC

System Environment:
--------------------------
--Platform: FC6
--Xf86_video_intel:6f92200db39a790c95c1fac64baf0bd41a70e481 
--Mesa:e2ca788ae700aae75bf8d024c1374c38cc5574f9 
--DRM:f1a99ddc14ebca303f20b6c23bd289fc887243ae
--Kernel:2.6.22

Bug detailed description:
--------------------------
This issue doesn't happen in software rendering mode.
And, q965 doesn't have this issue.

glBitmap is affected by a glDrawPixels call before it.
Pls try the attached test case

Reproduce steps:
----------------
start X
compile and run the attached test case


Current result:
----------------
after drawpixel, read out pixels: (0, 0) = (0.000000, 0.000000, 0.000000)
after glBitmap, read out pixels: (0, 0) = (0.027451, 0.027451, 0.027451), should be (1.000000, 1.000000, 1.000000)


Expected result:
----------------
glBitmap should work correctly

Comment 1 Shuang He 2007-12-11 23:40:26 UTC

Created attachment 13054 [details]
test case

This test case simply render a 8x8 area by calling glDrawPixels
then clear color buffer, and render a 8x1 bitmap by calling glBitmap with color (1, 1, 1, 1) 
but it turns out, the color is incorrect.

Comment 2 Shuang He 2007-12-11 23:41:43 UTC

Created attachment 13055 [details]
xorg conf

Comment 3 haihao 2007-12-26 18:41:22 UTC

fixed in mesa aac2d99dc316c069faa46dd43ff034155754c6b3

Comment 4 Shuang He 2008-01-04 01:29:08 UTC

Haihao, thanks

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