http://bugs.freedesktop.org/show_bug.cgi?id=11742





------- Comment #2 from [EMAIL PROTECTED]  2007-07-26 20:15 PST -------
Created an attachment (id=10898)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=10898&action=view)
a patch to fix this bug

The i965 driver translates MESA_FORMAT_Z16(mesa internal format, used for depth
texture) to L16_UNORM, so the alpha channel keeps constant after running the
texture instruction in PS. This patch uses I16_UNORM instead, so that the alpha
channel can be changed by the texture instruction. 


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