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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
* 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 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
* THE COPYRIGHT HOLDERS, AUTHORS 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.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell
* Brian Paul
*/
//#include "glxheader.h"
//#include "xmesaP.h"
#include "pipe/p_winsys.h"
#include "pipe/p_inlines.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "i965simple/brw_winsys.h"
#include "xlib_brw_aub.h"
#include "xlib_brw.h"
#define XBCWS_BATCHBUFFER_SIZE 1024
/* The backend to the brw driver (ie struct brw_winsys) is actually a
* per-context entity.
*/
struct xlib_brw_context_winsys {
struct brw_winsys brw_context_winsys; /**< batch buffer funcs */
struct aub_context *aub;
struct pipe_winsys *pipe_winsys;
unsigned batch_data[XBCWS_BATCHBUFFER_SIZE];
unsigned batch_nr;
unsigned batch_size;
unsigned batch_alloc;
};
/* Turn a brw_winsys into an xlib_brw_context_winsys:
*/
static inline struct xlib_brw_context_winsys *
xlib_brw_context_winsys( struct brw_winsys *sws )
{
return (struct xlib_brw_context_winsys *)sws;
}
/* Simple batchbuffer interface:
*/
static unsigned *xbcws_batch_start( struct brw_winsys *sws,
unsigned dwords,
unsigned relocs )
{
struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
if (xbcws->batch_size < xbcws->batch_nr + dwords)
return NULL;
xbcws->batch_alloc = xbcws->batch_nr + dwords;
return (void *)1; /* not a valid pointer! */
}
static void xbcws_batch_dword( struct brw_winsys *sws,
unsigned dword )
{
struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
assert(xbcws->batch_nr < xbcws->batch_alloc);
xbcws->batch_data[xbcws->batch_nr++] = dword;
}
static void xbcws_batch_reloc( struct brw_winsys *sws,
struct pipe_buffer *buf,
unsigned access_flags,
unsigned delta )
{
struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
assert(xbcws->batch_nr < xbcws->batch_alloc);
xbcws->batch_data[xbcws->batch_nr++] =
( xlib_brw_get_buffer_offset( NULL, buf, access_flags ) +
delta );
}
static void xbcws_batch_end( struct brw_winsys *sws )
{
struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
assert(xbcws->batch_nr <= xbcws->batch_alloc);
xbcws->batch_alloc = 0;
}
static void xbcws_batch_flush( struct brw_winsys *sws,
struct pipe_fence_handle **fence )
{
struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
assert(xbcws->batch_nr <= xbcws->batch_size);
if (xbcws->batch_nr) {
xlib_brw_commands_aub( xbcws->pipe_winsys,
xbcws->batch_data,
xbcws->batch_nr );
}
xbcws->batch_nr = 0;
}
/* Really a per-device function, just pass through:
*/
static unsigned xbcws_get_buffer_offset( struct brw_winsys *sws,
struct pipe_buffer *buf,
unsigned access_flags )
{
struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
return xlib_brw_get_buffer_offset( xbcws->pipe_winsys,
buf,
access_flags );
}
/* Really a per-device function, just pass through:
*/
static void xbcws_buffer_subdata_typed( struct brw_winsys *sws,
struct pipe_buffer *buf,
unsigned long offset,
unsigned long size,
const void *data,
unsigned data_type )
{
struct xlib_brw_context_winsys *xbcws = xlib_brw_context_winsys(sws);
xlib_brw_buffer_subdata_typed( xbcws->pipe_winsys,
buf,
offset,
size,
data,
data_type );
}
/**
* Create i965 hardware rendering context, but plugged into a
* dump-to-aubfile backend.
*/
struct pipe_context *
xlib_create_brw_context( struct pipe_screen *screen,
void *unused )
{
struct xlib_brw_context_winsys *xbcws = CALLOC_STRUCT( xlib_brw_context_winsys );
/* Fill in this struct with callbacks that i965simple will need to
* communicate with the window system, buffer manager, etc.
*/
xbcws->brw_context_winsys.batch_start = xbcws_batch_start;
xbcws->brw_context_winsys.batch_dword = xbcws_batch_dword;
xbcws->brw_context_winsys.batch_reloc = xbcws_batch_reloc;
xbcws->brw_context_winsys.batch_end = xbcws_batch_end;
xbcws->brw_context_winsys.batch_flush = xbcws_batch_flush;
xbcws->brw_context_winsys.buffer_subdata_typed = xbcws_buffer_subdata_typed;
xbcws->brw_context_winsys.get_buffer_offset = xbcws_get_buffer_offset;
xbcws->pipe_winsys = screen->winsys; /* redundant */
xbcws->batch_size = XBCWS_BATCHBUFFER_SIZE;
/* Create the i965simple context:
*/
#ifdef GALLIUM_CELL
return NULL;
#else
return brw_create( screen,
&xbcws->brw_context_winsys,
0 );
#endif
}
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