http://bugs.freedesktop.org/show_bug.cgi?id=14165
Summary: [i965] glClear() is not working well with glColorMask()
Product: Mesa
Version: unspecified
Platform: Other
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/i965
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
CC: [email protected]
Created an attachment (id=13828)
--> (http://bugs.freedesktop.org/attachment.cgi?id=13828)
test case
System Environment:
--------------------------
--Platform: Q965 & GM965
--Architecture(32-bit,64-bit,compatiblity): 32bit
kernel:
2.6.23
drm
commit c6f175cbea1dba3fc26426243acc55b89b8a8064
mesa
commit 02d5ba849197e19843dad164239b51f18fb16faf
xf86_video_intel
commit 633dbd28218fd8a746c1735fd44a14f35bd07faa
Bug detailed description:
--------------------------
this issue doesn't happen in software rendering mode.
this issue doesn't happen on i915
specify color mask as (GL_TRUE, GL_FALSE, GL_FALSE, GL_FALSE)
and specify clear color as (1.0, 0.0, 0.0, 0.0)
then clear window with glClear(GL_COLOR_BUFFER_BIT);
but nothing drawn
Reproduce steps:
----------------
1. start X
2. compile and run attached test case
Current result:
----------------
nothing drawn
Expected result:
----------------
should clear window with red color.
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