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/**************************************************************************
*
* Copyright 2007-2009 VMware, Inc.
* 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.
*
**************************************************************************/
/**
* @file
* Software rasterizer winsys.
*/
#ifndef SW_WINSYS_H
#define SW_WINSYS_H
#include "pipe/p_compiler.h" /* for boolean */
#include "pipe/p_format.h"
#ifdef __cplusplus
extern "C" {
#endif
struct winsys_handle;
struct pipe_screen;
struct pipe_context;
struct pipe_resource;
struct pipe_box;
/**
* Opaque pointer.
*/
struct sw_displaytarget;
/**
* This is the interface that sw expects any window system
* hosting it to implement.
*
* sw is for the most part a self sufficient driver. The only thing it
* does not know is how to display a surface.
*/
struct sw_winsys
{
void
(*destroy)( struct sw_winsys *ws );
boolean
(*is_displaytarget_format_supported)( struct sw_winsys *ws,
unsigned tex_usage,
enum pipe_format format );
/**
* Allocate storage for a render target.
*
* Often surfaces which are meant to be blitted to the front screen (i.e.,
* display targets) must be allocated with special characteristics, memory
* pools, or obtained directly from the windowing system.
*
* This callback is invoked by the pipe_screen when creating a texture marked
* with the PIPE_BIND_DISPLAY_TARGET flag to get the underlying
* storage.
*/
struct sw_displaytarget *
(*displaytarget_create)( struct sw_winsys *ws,
unsigned tex_usage,
enum pipe_format format,
unsigned width, unsigned height,
unsigned alignment,
unsigned *stride );
/**
* Used to implement texture_from_handle.
*/
struct sw_displaytarget *
(*displaytarget_from_handle)( struct sw_winsys *ws,
const struct pipe_resource *templat,
struct winsys_handle *whandle,
unsigned *stride );
/**
* Used to implement texture_get_handle.
*/
boolean
(*displaytarget_get_handle)( struct sw_winsys *ws,
struct sw_displaytarget *dt,
struct winsys_handle *whandle );
/**
* \param flags bitmask of PIPE_TRANSFER_x flags
*/
void *
(*displaytarget_map)( struct sw_winsys *ws,
struct sw_displaytarget *dt,
unsigned flags );
void
(*displaytarget_unmap)( struct sw_winsys *ws,
struct sw_displaytarget *dt );
/**
* @sa pipe_screen:flush_frontbuffer.
*
* This call will likely become asynchronous eventually.
*/
void
(*displaytarget_display)( struct sw_winsys *ws,
struct sw_displaytarget *dt,
void *context_private,
struct pipe_box *box );
void
(*displaytarget_destroy)( struct sw_winsys *ws,
struct sw_displaytarget *dt );
};
#ifdef __cplusplus
}
#endif
#endif /* SW_WINSYS_H */
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