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/*
* Copyright 2014, 2015 Red Hat.
*
* 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 "util/u_format.h"
#include "util/u_inlines.h"
#include "virgl_context.h"
#include "virgl_resource.h"
#include "virgl_screen.h"
bool virgl_res_needs_flush_wait(struct virgl_context *vctx,
struct virgl_resource *res,
unsigned usage)
{
struct virgl_screen *vs = virgl_screen(vctx->base.screen);
if ((!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) && vs->vws->res_is_referenced(vs->vws, vctx->cbuf, res->hw_res)) {
return true;
}
return false;
}
bool virgl_res_needs_readback(struct virgl_context *vctx,
struct virgl_resource *res,
unsigned usage)
{
bool readback = true;
if (res->clean)
readback = false;
else if (usage & PIPE_TRANSFER_DISCARD_RANGE)
readback = false;
else if ((usage & (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT)) ==
(PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT))
readback = false;
return readback;
}
static struct pipe_resource *virgl_resource_create(struct pipe_screen *screen,
const struct pipe_resource *templ)
{
struct virgl_screen *vs = virgl_screen(screen);
if (templ->target == PIPE_BUFFER)
return virgl_buffer_create(vs, templ);
else
return virgl_texture_create(vs, templ);
}
static struct pipe_resource *virgl_resource_from_handle(struct pipe_screen *screen,
const struct pipe_resource *templ,
struct winsys_handle *whandle,
unsigned usage)
{
struct virgl_screen *vs = virgl_screen(screen);
if (templ->target == PIPE_BUFFER)
return NULL;
else
return virgl_texture_from_handle(vs, templ, whandle);
}
void virgl_init_screen_resource_functions(struct pipe_screen *screen)
{
screen->resource_create = virgl_resource_create;
screen->resource_from_handle = virgl_resource_from_handle;
screen->resource_get_handle = u_resource_get_handle_vtbl;
screen->resource_destroy = u_resource_destroy_vtbl;
}
static void virgl_buffer_subdata(struct pipe_context *pipe,
struct pipe_resource *resource,
unsigned usage, unsigned offset,
unsigned size, const void *data)
{
struct pipe_box box;
if (offset == 0 && size == resource->width0)
usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
else
usage |= PIPE_TRANSFER_DISCARD_RANGE;
u_box_1d(offset, size, &box);
if (size >= (VIRGL_MAX_CMDBUF_DWORDS * 4))
u_default_buffer_subdata(pipe, resource, usage, offset, size, data);
else
virgl_transfer_inline_write(pipe, resource, 0, usage, &box, data, 0, 0);
}
void virgl_init_context_resource_functions(struct pipe_context *ctx)
{
ctx->transfer_map = u_transfer_map_vtbl;
ctx->transfer_flush_region = u_transfer_flush_region_vtbl;
ctx->transfer_unmap = u_transfer_unmap_vtbl;
ctx->buffer_subdata = virgl_buffer_subdata;
ctx->texture_subdata = u_default_texture_subdata;
}
void virgl_resource_layout(struct pipe_resource *pt,
struct virgl_resource_metadata *metadata)
{
unsigned level;
unsigned width = pt->width0;
unsigned height = pt->height0;
unsigned depth = pt->depth0;
unsigned buffer_size = 0;
for (level = 0; level <= pt->last_level; level++) {
unsigned slices;
if (pt->target == PIPE_TEXTURE_CUBE)
slices = 6;
else if (pt->target == PIPE_TEXTURE_3D)
slices = depth;
else
slices = pt->array_size;
metadata->stride[level] = util_format_get_stride(pt->format, width);
metadata->level_offset[level] = buffer_size;
buffer_size += (util_format_get_nblocksy(pt->format, height) *
slices * metadata->stride[level]);
width = u_minify(width, 1);
height = u_minify(height, 1);
depth = u_minify(depth, 1);
}
if (pt->nr_samples <= 1)
metadata->total_size = buffer_size;
else /* don't create guest backing store for MSAA */
metadata->total_size = 0;
}
unsigned virgl_resource_offset(struct pipe_resource *pres,
struct virgl_resource_metadata *metadata,
unsigned level, unsigned layer)
{
const unsigned hgt = u_minify(pres->height0, level);
const unsigned nblocksy = util_format_get_nblocksy(pres->format, hgt);
unsigned offset = metadata->level_offset[level];
if (pres->target == PIPE_TEXTURE_CUBE ||
pres->target == PIPE_TEXTURE_CUBE_ARRAY ||
pres->target == PIPE_TEXTURE_3D ||
pres->target == PIPE_TEXTURE_2D_ARRAY) {
offset += layer * nblocksy * metadata->stride[level];
}
else if (pres->target == PIPE_TEXTURE_1D_ARRAY) {
offset += layer * metadata->stride[level];
}
else {
assert(layer == 0);
}
return offset;
}
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