138 lines
4.3 KiB
C
138 lines
4.3 KiB
C
/*
|
|
* Copyright 2009 VMware, Inc.
|
|
* Copyright 2019 Collabora Ltd.
|
|
*
|
|
* 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
|
|
* on 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
|
|
* THE AUTHOR(S) AND/OR THEIR 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_defines.h"
|
|
#include "util/u_inlines.h"
|
|
#include "pipe/p_context.h"
|
|
#include "util/u_memory.h"
|
|
#include "util/u_math.h"
|
|
|
|
#include "virgl_staging_mgr.h"
|
|
#include "virgl_resource.h"
|
|
|
|
static bool
|
|
virgl_staging_alloc_buffer(struct virgl_staging_mgr *staging, unsigned min_size)
|
|
{
|
|
struct virgl_winsys *vws = staging->vws;
|
|
unsigned size;
|
|
|
|
/* Release the old buffer, if present:
|
|
*/
|
|
vws->resource_reference(vws, &staging->hw_res, NULL);
|
|
|
|
/* Allocate a new one:
|
|
*/
|
|
size = align(MAX2(staging->default_size, min_size), 4096);
|
|
|
|
staging->hw_res = vws->resource_create(vws,
|
|
PIPE_BUFFER,
|
|
NULL,
|
|
PIPE_FORMAT_R8_UNORM,
|
|
VIRGL_BIND_STAGING,
|
|
size, /* width */
|
|
1, /* height */
|
|
1, /* depth */
|
|
1, /* array_size */
|
|
0, /* last_level */
|
|
0, /* nr_samples */
|
|
0, /* flags */
|
|
size); /* size */
|
|
if (staging->hw_res == NULL)
|
|
return false;
|
|
|
|
staging->map = vws->resource_map(vws, staging->hw_res);
|
|
if (staging->map == NULL) {
|
|
vws->resource_reference(vws, &staging->hw_res, NULL);
|
|
return false;
|
|
}
|
|
|
|
staging->offset = 0;
|
|
staging->size = size;
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
virgl_staging_init(struct virgl_staging_mgr *staging, struct pipe_context *pipe,
|
|
unsigned default_size)
|
|
{
|
|
memset(staging, 0, sizeof(*staging));
|
|
|
|
staging->vws = virgl_screen(pipe->screen)->vws;
|
|
staging->default_size = default_size;
|
|
}
|
|
|
|
void
|
|
virgl_staging_destroy(struct virgl_staging_mgr *staging)
|
|
{
|
|
struct virgl_winsys *vws = staging->vws;
|
|
vws->resource_reference(vws, &staging->hw_res, NULL);
|
|
}
|
|
|
|
bool
|
|
virgl_staging_alloc(struct virgl_staging_mgr *staging,
|
|
unsigned size,
|
|
unsigned alignment,
|
|
unsigned *out_offset,
|
|
struct virgl_hw_res **outbuf,
|
|
void **ptr)
|
|
{
|
|
struct virgl_winsys *vws = staging->vws;
|
|
unsigned offset = align(staging->offset, alignment);
|
|
|
|
assert(out_offset);
|
|
assert(outbuf);
|
|
assert(ptr);
|
|
assert(size);
|
|
|
|
/* Make sure we have enough space in the staging buffer
|
|
* for the sub-allocation.
|
|
*/
|
|
if (offset + size > staging->size) {
|
|
if (unlikely(!virgl_staging_alloc_buffer(staging, size))) {
|
|
*out_offset = ~0;
|
|
vws->resource_reference(vws, outbuf, NULL);
|
|
*ptr = NULL;
|
|
return false;
|
|
}
|
|
|
|
offset = 0;
|
|
}
|
|
|
|
assert(staging->size);
|
|
assert(staging->hw_res);
|
|
assert(staging->map);
|
|
assert(offset < staging->size);
|
|
assert(offset + size <= staging->size);
|
|
|
|
/* Emit the return values: */
|
|
*ptr = staging->map + offset;
|
|
vws->resource_reference(vws, outbuf, staging->hw_res);
|
|
*out_offset = offset;
|
|
|
|
staging->offset = offset + size;
|
|
|
|
return true;
|
|
}
|