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4c27ca4700
Previous patch doesn't set the offset to zero for GLESv2 path. Now fix it. This patch also fix a minor problem in pixmap uploading preparation. If the revert is not REVERT_NORMAL, then we don't need to prepare a fbo for it. As current mesa i965 gles2 driver doesn't support to set a A8 texture as a fbo target, we must fix this problem. As some A1/A8 picture need to be uploaded, this is the only place a A8 texture may be attached to a fbo. This patch also enable the shader gradient for GLESv2. The reason we disable it before is that some glsl linker doesn't support link different objects which have cross reference. Now we don't have that problem. Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>
X Server
The X server accepts requests from client applications to create windows,
which are (normally rectangular) "virtual screens" that the client program
can draw into.
Windows are then composed on the actual screen by the X server
(or by a separate composite manager) as directed by the window manager,
which usually communicates with the user via graphical controls such as buttons
and draggable titlebars and borders.
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