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/**************************************************************************
*
* Copyright 2006 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 <keithw-at-tungstengraphics-dot-com>
*/
#include <stdlib.h>
#include <xf86drm.h>
#include "dri_bufpool.h"
#include "dri_bufmgr.h"
#include "intel_context.h"
#include "intel_pipe.h"
#include "pipe/softpipe/sp_winsys.h"
struct intel_softpipe_winsys {
struct softpipe_winsys sws;
struct intel_context *intel;
};
/* Turn the softpipe opaque buffer pointer into a dri_bufmgr opaque
* buffer pointer...
*/
static inline struct _DriBufferObject *
dri_bo( struct pipe_buffer_handle *bo )
{
return (struct _DriBufferObject *)bo;
}
static inline struct pipe_buffer_handle *
pipe_bo( struct _DriBufferObject *bo )
{
return (struct pipe_buffer_handle *)bo;
}
/* Turn a softpipe winsys into an intel/softpipe winsys:
*/
static inline struct intel_softpipe_winsys *
intel_softpipe_winsys( struct softpipe_winsys *sws )
{
return (struct intel_softpipe_winsys *)sws;
}
/* Most callbacks map direcly onto dri_bufmgr operations:
*/
static void *intel_buffer_map(struct softpipe_winsys *sws,
struct pipe_buffer_handle *buf )
{
return driBOMap( dri_bo(buf),
DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE, 0 );
}
static void intel_buffer_unmap(struct softpipe_winsys *sws,
struct pipe_buffer_handle *buf)
{
driBOUnmap( dri_bo(buf) );
}
static struct pipe_buffer_handle *
intel_buffer_reference(struct softpipe_winsys *sws,
struct pipe_buffer_handle *buf)
{
return pipe_bo( driBOReference( dri_bo(buf) ) );
}
static void intel_buffer_unreference(struct softpipe_winsys *sws,
struct pipe_buffer_handle **buf)
{
if (*buf) {
driBOUnReference( dri_bo(*buf) );
*buf = NULL;
}
}
/* Grabs the hardware lock!
*/
static void intel_buffer_data(struct softpipe_winsys *sws,
struct pipe_buffer_handle *buf,
unsigned size, const void *data )
{
struct intel_context *intel = intel_softpipe_winsys(sws)->intel;
LOCK_HARDWARE( intel );
driBOData( dri_bo(buf), size, data, 0 );
UNLOCK_HARDWARE( intel );
}
static void intel_buffer_subdata(struct softpipe_winsys *sws,
struct pipe_buffer_handle *buf,
unsigned long offset,
unsigned long size,
const void *data)
{
driBOSubData( dri_bo(buf), offset, size, data );
}
static void intel_buffer_get_subdata(struct softpipe_winsys *sws,
struct pipe_buffer_handle *buf,
unsigned long offset,
unsigned long size,
void *data)
{
driBOGetSubData( dri_bo(buf), offset, size, data );
}
/* Softpipe has no concept of pools. We choose the tex/region pool
* for all buffers.
*/
static struct pipe_buffer_handle *
intel_create_buffer(struct softpipe_winsys *sws,
unsigned alignment)
{
struct intel_context *intel = intel_softpipe_winsys(sws)->intel;
struct _DriBufferObject *buffer;
LOCK_HARDWARE( intel );
driGenBuffers( intel->intelScreen->regionPool,
"softpipe buffer", 1, &buffer, alignment, 0, 0 );
UNLOCK_HARDWARE( intel );
return pipe_bo(buffer);
}
struct pipe_context *
intel_create_softpipe( struct intel_context *intel )
{
struct intel_softpipe_winsys *isws = CALLOC_STRUCT( intel_softpipe_winsys );
/* Fill in this struct with callbacks that softpipe will need to
* communicate with the window system, buffer manager, etc.
*
* Softpipe would be happy with a malloc based memory manager, but
* the SwapBuffers implementation in this winsys driver requires
* that rendering be done to an appropriate _DriBufferObject.
*/
isws->sws.create_buffer = intel_create_buffer;
isws->sws.buffer_map = intel_buffer_map;
isws->sws.buffer_unmap = intel_buffer_unmap;
isws->sws.buffer_reference = intel_buffer_reference;
isws->sws.buffer_unreference = intel_buffer_unreference;
isws->sws.buffer_data = intel_buffer_data;
isws->sws.buffer_subdata = intel_buffer_subdata;
isws->sws.buffer_get_subdata = intel_buffer_get_subdata;
isws->intel = intel;
/* Create the softpipe context:
*/
return softpipe_create( &isws->sws );
}
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