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/**************************************************************************
*
* Copyright 2009, VMware, Inc.
* All Rights Reserved.
* Copyright 2010 George Sapountzis <gsapountzis@gmail.com>
*
* 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 VMWARE 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.
*
**************************************************************************/
#include "pipe/p_compiler.h"
#include "pipe/p_format.h"
#include "util/u_inlines.h"
#include "util/u_format.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "state_tracker/sw_winsys.h"
#include "dri_sw_winsys.h"
struct dri_sw_displaytarget
{
enum pipe_format format;
unsigned width;
unsigned height;
unsigned stride;
unsigned map_flags;
void *data;
void *mapped;
const void *front_private;
};
struct dri_sw_winsys
{
struct sw_winsys base;
struct drisw_loader_funcs *lf;
};
static inline struct dri_sw_displaytarget *
dri_sw_displaytarget( struct sw_displaytarget *dt )
{
return (struct dri_sw_displaytarget *)dt;
}
static inline struct dri_sw_winsys *
dri_sw_winsys( struct sw_winsys *ws )
{
return (struct dri_sw_winsys *)ws;
}
static boolean
dri_sw_is_displaytarget_format_supported( struct sw_winsys *ws,
unsigned tex_usage,
enum pipe_format format )
{
/* TODO: check visuals or other sensible thing here */
return TRUE;
}
static struct sw_displaytarget *
dri_sw_displaytarget_create(struct sw_winsys *winsys,
unsigned tex_usage,
enum pipe_format format,
unsigned width, unsigned height,
unsigned alignment,
const void *front_private,
unsigned *stride)
{
struct dri_sw_displaytarget *dri_sw_dt;
unsigned nblocksy, size, format_stride;
dri_sw_dt = CALLOC_STRUCT(dri_sw_displaytarget);
if(!dri_sw_dt)
goto no_dt;
dri_sw_dt->format = format;
dri_sw_dt->width = width;
dri_sw_dt->height = height;
dri_sw_dt->front_private = front_private;
format_stride = util_format_get_stride(format, width);
dri_sw_dt->stride = align(format_stride, alignment);
nblocksy = util_format_get_nblocksy(format, height);
size = dri_sw_dt->stride * nblocksy;
dri_sw_dt->data = align_malloc(size, alignment);
if(!dri_sw_dt->data)
goto no_data;
*stride = dri_sw_dt->stride;
return (struct sw_displaytarget *)dri_sw_dt;
no_data:
FREE(dri_sw_dt);
no_dt:
return NULL;
}
static void
dri_sw_displaytarget_destroy(struct sw_winsys *ws,
struct sw_displaytarget *dt)
{
struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
FREE(dri_sw_dt->data);
FREE(dri_sw_dt);
}
static void *
dri_sw_displaytarget_map(struct sw_winsys *ws,
struct sw_displaytarget *dt,
unsigned flags)
{
struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
dri_sw_dt->mapped = dri_sw_dt->data;
if (dri_sw_dt->front_private && (flags & PIPE_TRANSFER_READ)) {
struct dri_sw_winsys *dri_sw_ws = dri_sw_winsys(ws);
dri_sw_ws->lf->get_image((void *)dri_sw_dt->front_private, 0, 0, dri_sw_dt->width, dri_sw_dt->height, dri_sw_dt->stride, dri_sw_dt->data);
}
dri_sw_dt->map_flags = flags;
return dri_sw_dt->mapped;
}
static void
dri_sw_displaytarget_unmap(struct sw_winsys *ws,
struct sw_displaytarget *dt)
{
struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
if (dri_sw_dt->front_private && (dri_sw_dt->map_flags & PIPE_TRANSFER_WRITE)) {
struct dri_sw_winsys *dri_sw_ws = dri_sw_winsys(ws);
dri_sw_ws->lf->put_image2((void *)dri_sw_dt->front_private, dri_sw_dt->data, 0, 0, dri_sw_dt->width, dri_sw_dt->height, dri_sw_dt->stride);
}
dri_sw_dt->map_flags = 0;
dri_sw_dt->mapped = NULL;
}
static struct sw_displaytarget *
dri_sw_displaytarget_from_handle(struct sw_winsys *winsys,
const struct pipe_resource *templ,
struct winsys_handle *whandle,
unsigned *stride)
{
assert(0);
return NULL;
}
static boolean
dri_sw_displaytarget_get_handle(struct sw_winsys *winsys,
struct sw_displaytarget *dt,
struct winsys_handle *whandle)
{
assert(0);
return FALSE;
}
static void
dri_sw_displaytarget_display(struct sw_winsys *ws,
struct sw_displaytarget *dt,
void *context_private,
struct pipe_box *box)
{
struct dri_sw_winsys *dri_sw_ws = dri_sw_winsys(ws);
struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
struct dri_drawable *dri_drawable = (struct dri_drawable *)context_private;
unsigned width, height;
unsigned blsize = util_format_get_blocksize(dri_sw_dt->format);
/* Set the width to 'stride / cpp'.
*
* PutImage correctly clips to the width of the dst drawable.
*/
width = dri_sw_dt->stride / blsize;
height = dri_sw_dt->height;
if (box) {
void *data;
data = dri_sw_dt->data + (dri_sw_dt->stride * box->y) + box->x * blsize;
dri_sw_ws->lf->put_image2(dri_drawable, data,
box->x, box->y, box->width, box->height, dri_sw_dt->stride);
} else {
dri_sw_ws->lf->put_image(dri_drawable, dri_sw_dt->data, width, height);
}
}
static void
dri_destroy_sw_winsys(struct sw_winsys *winsys)
{
FREE(winsys);
}
struct sw_winsys *
dri_create_sw_winsys(struct drisw_loader_funcs *lf)
{
struct dri_sw_winsys *ws;
ws = CALLOC_STRUCT(dri_sw_winsys);
if (!ws)
return NULL;
ws->lf = lf;
ws->base.destroy = dri_destroy_sw_winsys;
ws->base.is_displaytarget_format_supported = dri_sw_is_displaytarget_format_supported;
/* screen texture functions */
ws->base.displaytarget_create = dri_sw_displaytarget_create;
ws->base.displaytarget_destroy = dri_sw_displaytarget_destroy;
ws->base.displaytarget_from_handle = dri_sw_displaytarget_from_handle;
ws->base.displaytarget_get_handle = dri_sw_displaytarget_get_handle;
/* texture functions */
ws->base.displaytarget_map = dri_sw_displaytarget_map;
ws->base.displaytarget_unmap = dri_sw_displaytarget_unmap;
ws->base.displaytarget_display = dri_sw_displaytarget_display;
return &ws->base;
}
/* vim: set sw=3 ts=8 sts=3 expandtab: */
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