1/*
2 * Copyright 2014, 2015 Red Hat.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24#include "util/u_inlines.h"
25#include "util/u_memory.h"
26#include "virgl_context.h"
27#include "virgl_encode.h"
28#include "virgl_resource.h"
29#include "virgl_screen.h"
30
31void virgl_buffer_transfer_unmap(struct pipe_context *ctx,
32                                 struct pipe_transfer *transfer)
33{
34   struct virgl_context *vctx = virgl_context(ctx);
35   struct virgl_transfer *trans = virgl_transfer(transfer);
36   bool persistent_coherent = trans->base.usage & (PIPE_MAP_PERSISTENT |
37                                                   PIPE_MAP_COHERENT);
38
39   if ((trans->base.usage & PIPE_MAP_WRITE) && !persistent_coherent) {
40      if (transfer->usage & PIPE_MAP_FLUSH_EXPLICIT) {
41         if (trans->range.end <= trans->range.start) {
42            virgl_resource_destroy_transfer(vctx, trans);
43            return;
44         }
45
46         transfer->box.x += trans->range.start;
47         transfer->box.width = trans->range.end - trans->range.start;
48         trans->offset = transfer->box.x;
49      }
50
51      if (trans->copy_src_hw_res && trans->direction == VIRGL_TRANSFER_TO_HOST) {
52         virgl_encode_copy_transfer(vctx, trans);
53         virgl_resource_destroy_transfer(vctx, trans);
54      } else if (trans->copy_src_hw_res && trans->direction == VIRGL_TRANSFER_FROM_HOST) {
55         // if it is readback, then we have already encoded transfer
56         virgl_resource_destroy_transfer(vctx, trans);
57      } else {
58         virgl_transfer_queue_unmap(&vctx->queue, trans);
59      }
60   } else
61      virgl_resource_destroy_transfer(vctx, trans);
62}
63
64void virgl_buffer_transfer_flush_region(struct pipe_context *ctx,
65                                        struct pipe_transfer *transfer,
66                                        const struct pipe_box *box)
67{
68   struct virgl_transfer *trans = virgl_transfer(transfer);
69
70   /*
71    * FIXME: This is not optimal.  For example,
72    *
73    * glMapBufferRange(.., 0, 100, GL_MAP_FLUSH_EXPLICIT_BIT)
74    * glFlushMappedBufferRange(.., 25, 30)
75    * glFlushMappedBufferRange(.., 65, 70)
76    *
77    * We'll end up flushing 25 --> 70.
78    */
79   util_range_add(transfer->resource, &trans->range, box->x, box->x + box->width);
80}
81
82void virgl_buffer_init(struct virgl_resource *res)
83{
84}
85