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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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move it to pipe/internal/p_winsys_screen.h and start converting
the state trackers to the screen usage
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Also, rename p_tile.[ch] to u_tile.[ch]
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The cell driver still uses an internal CELL_FLUSH_WAIT flag, in the long run
proper fencing should be implemented for it.
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These functions are now per-screen, not per-context.
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These are now per-screen functions, not per-context.
State tracker updated, code in drivers and p_context.h disabled.
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Called whenever texture data is changed (glTexImage, glTexSubImage,
glCopyTexSubImage, etc).
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This is in a separate commit to ensure renames are properly preserved.
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