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reported by clang static analyzer
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Avoids warnings on 64bit builds.
Use regular unsigned since that's what gallium expects, but use a
typedef to facilitate possible changes in the future.
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The core reference counting code is centralized in p_refcnt.h.
This has some consequences related to struct pipe_buffer:
* The screen member of struct pipe_buffer must be initialized, or
pipe_buffer_reference() will crash trying to destroy a buffer with reference
count 0. u_simple_screen takes care of this, but I may have missed some of
the drivers not using it.
* Except for rare exceptions deep in winsys code, buffers must always be
allocated via pipe_buffer_create() or via screen->*buffer_create() rather
than via winsys->*buffer_create().
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The debug functions depend on several util function for os abstractions, and
these depend on debug functions, so a seperate module is not possible.
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A variation of malloc buffers which get transferred to real graphics memory
when there is an attempt to validate them.
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This reverts commit 17849eafaacfbb2124d86f561a91b707317d3b31.
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A variation of malloc buffers which get transferred to real graphics memory
when there is an attempt to validate them.
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