http://bugs.freedesktop.org/show_bug.cgi?id=10483
Summary: Alpha value is not effective in double buffer mode
Product: Mesa
Version: CVS
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: Mesa core
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
CC: [EMAIL PROTECTED], [EMAIL PROTECTED]
version
=======
Mesa master, cset e608d92c5b42d192772066194531db8bfaff86ce
Description
===========
Under double buffer mode, glReadPixels() cannot get the right alpha value after
the object was draw with specified RGBA values (by glColor()). R/G/B value is
right respectively.
In fact, the alpha value achieved is the value that is used to clear the color
buffer (glClearColor()).
Misc
====
under single buffer mode, this bug doesn't happen.
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