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
virgl_buffer_transfer_unmap(struct pipe_context * ctx,struct pipe_transfer * transfer)31 static void 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) {
52 virgl_encode_copy_transfer(vctx, trans);
53 virgl_resource_destroy_transfer(vctx, trans);
54 } else {
55 virgl_transfer_queue_unmap(&vctx->queue, trans);
56 }
57 } else
58 virgl_resource_destroy_transfer(vctx, trans);
59 }
60
virgl_buffer_transfer_flush_region(struct pipe_context * ctx,struct pipe_transfer * transfer,const struct pipe_box * box)61 static void virgl_buffer_transfer_flush_region(struct pipe_context *ctx,
62 struct pipe_transfer *transfer,
63 const struct pipe_box *box)
64 {
65 struct virgl_transfer *trans = virgl_transfer(transfer);
66
67 /*
68 * FIXME: This is not optimal. For example,
69 *
70 * glMapBufferRange(.., 0, 100, GL_MAP_FLUSH_EXPLICIT_BIT)
71 * glFlushMappedBufferRange(.., 25, 30)
72 * glFlushMappedBufferRange(.., 65, 70)
73 *
74 * We'll end up flushing 25 --> 70.
75 */
76 util_range_add(transfer->resource, &trans->range, box->x, box->x + box->width);
77 }
78
79 static const struct u_resource_vtbl virgl_buffer_vtbl =
80 {
81 u_default_resource_get_handle, /* get_handle */
82 virgl_resource_destroy, /* resource_destroy */
83 virgl_resource_transfer_map, /* transfer_map */
84 virgl_buffer_transfer_flush_region, /* transfer_flush_region */
85 virgl_buffer_transfer_unmap, /* transfer_unmap */
86 };
87
virgl_buffer_init(struct virgl_resource * res)88 void virgl_buffer_init(struct virgl_resource *res)
89 {
90 res->u.vtbl = &virgl_buffer_vtbl;
91 }
92