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- /**************************************************************************
- *
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-
-#ifndef P_WINSYS_H
-#define P_WINSYS_H
-
-
-#include "p_format.h"
-
-/**
- * \file
- * This is the interface that Gallium3D requires any window system
- * hosting it to implement. This is the only include file in Gallium3D
- * which is public.
- */
-
-
-/** Opaque type */
-struct pipe_fence_handle;
-
-struct pipe_surface;
-
-
-/**
- * Gallium3D drivers are (meant to be!) independent of both GL and the
- * window system. The window system provides a buffer manager and a
- * set of additional hooks for things like command buffer submission,
- * etc.
- *
- * There clearly has to be some agreement between the window system
- * driver and the hardware driver about the format of command buffers,
- * etc.
- */
-struct pipe_winsys
-{
- /** Returns name of this winsys interface */
- const char *(*get_name)( struct pipe_winsys *sws );
-
- /**
- * Do any special operations to ensure frontbuffer contents are
- * displayed, eg copy fake frontbuffer.
- */
- void (*flush_frontbuffer)( struct pipe_winsys *sws,
- struct pipe_surface *surf,
- void *context_private );
-
- /** Debug output */
- void (*printf)( struct pipe_winsys *sws,
- const char *, ... );
-
-
- /** allocate a new surface (no context dependency) */
- struct pipe_surface *(*surface_alloc)(struct pipe_winsys *ws);
-
- /**
- * Allocate storage for a pipe_surface.
- * Returns 0 if succeeds.
- */
- int (*surface_alloc_storage)(struct pipe_winsys *ws,
- struct pipe_surface *surf,
- unsigned width, unsigned height,
- enum pipe_format format,
- unsigned flags);
-
- void (*surface_release)(struct pipe_winsys *ws, struct pipe_surface **s);
-
-
- /**
- * Buffer management. Buffer attributes are mostly fixed over its lifetime.
- *
- * Remember that gallium gets to choose the interface it needs, and the
- * window systems must then implement that interface (rather than the
- * other way around...).
- *
- * usage is a bitmask of PIPE_BUFFER_USAGE_PIXEL/VERTEX/INDEX/CONSTANT. This
- * usage argument is only an optimization hint, not a guarantee, therefore
- * proper behavior must be observed in all circumstances.
- */
- struct pipe_buffer *(*buffer_create)( struct pipe_winsys *sws,
- unsigned alignment,
- unsigned usage,
- unsigned size );
-
- /** Create a buffer that wraps user-space data */
- struct pipe_buffer *(*user_buffer_create)(struct pipe_winsys *sws,
- void *ptr,
- unsigned bytes);
-
- /**
- * Map the entire data store of a buffer object into the client's address.
- * flags is bitmask of PIPE_BUFFER_USAGE_CPU_READ/WRITE flags.
- */
- void *(*buffer_map)( struct pipe_winsys *sws,
- struct pipe_buffer *buf,
- unsigned usage );
-
- void (*buffer_unmap)( struct pipe_winsys *sws,
- struct pipe_buffer *buf );
-
- void (*buffer_destroy)( struct pipe_winsys *sws,
- struct pipe_buffer *buf );
-
-
- /** Set ptr = fence, with reference counting */
- void (*fence_reference)( struct pipe_winsys *sws,
- struct pipe_fence_handle **ptr,
- struct pipe_fence_handle *fence );
-
- /**
- * Checks whether the fence has been signalled.
- *
- * The meaning of flag is pipe-driver specific.
- *
- * Returns zero if it has.
- */
- int (*fence_signalled)( struct pipe_winsys *sws,
- struct pipe_fence_handle *fence,
- unsigned flag );
-
- /**
- * Wait for the fence to finish.
- *
- * The meaning of flag is pipe-driver specific.
- *
- * Returns zero on success.
- */
- int (*fence_finish)( struct pipe_winsys *sws,
- struct pipe_fence_handle *fence,
- unsigned flag );
-
-
-};
-
-
-
-#endif /* P_WINSYS_H */