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 #include "util/u_inlines.h"
24 #include "virgl_context.h"
25 #include "virgl_resource.h"
26 #include "virgl_screen.h"
27
virgl_res_needs_flush_wait(struct virgl_context * vctx,struct virgl_resource * res,unsigned usage)28 bool virgl_res_needs_flush_wait(struct virgl_context *vctx,
29 struct virgl_resource *res,
30 unsigned usage)
31 {
32 struct virgl_screen *vs = virgl_screen(vctx->base.screen);
33
34 if ((!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) && vs->vws->res_is_referenced(vs->vws, vctx->cbuf, res->hw_res)) {
35 return true;
36 }
37 return false;
38 }
39
virgl_res_needs_readback(struct virgl_context * vctx,struct virgl_resource * res,unsigned usage)40 bool virgl_res_needs_readback(struct virgl_context *vctx,
41 struct virgl_resource *res,
42 unsigned usage)
43 {
44 bool readback = true;
45 if (res->clean)
46 readback = false;
47 else if (usage & PIPE_TRANSFER_DISCARD_RANGE)
48 readback = false;
49 else if ((usage & (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT)) ==
50 (PIPE_TRANSFER_WRITE | PIPE_TRANSFER_FLUSH_EXPLICIT))
51 readback = false;
52 return readback;
53 }
54
virgl_resource_create(struct pipe_screen * screen,const struct pipe_resource * templ)55 static struct pipe_resource *virgl_resource_create(struct pipe_screen *screen,
56 const struct pipe_resource *templ)
57 {
58 struct virgl_screen *vs = virgl_screen(screen);
59 if (templ->target == PIPE_BUFFER)
60 return virgl_buffer_create(vs, templ);
61 else
62 return virgl_texture_create(vs, templ);
63 }
64
virgl_resource_from_handle(struct pipe_screen * screen,const struct pipe_resource * templ,struct winsys_handle * whandle,unsigned usage)65 static struct pipe_resource *virgl_resource_from_handle(struct pipe_screen *screen,
66 const struct pipe_resource *templ,
67 struct winsys_handle *whandle,
68 unsigned usage)
69 {
70 struct virgl_screen *vs = virgl_screen(screen);
71 if (templ->target == PIPE_BUFFER)
72 return NULL;
73 else
74 return virgl_texture_from_handle(vs, templ, whandle);
75 }
76
virgl_init_screen_resource_functions(struct pipe_screen * screen)77 void virgl_init_screen_resource_functions(struct pipe_screen *screen)
78 {
79 screen->resource_create = virgl_resource_create;
80 screen->resource_from_handle = virgl_resource_from_handle;
81 screen->resource_get_handle = u_resource_get_handle_vtbl;
82 screen->resource_destroy = u_resource_destroy_vtbl;
83 }
84
virgl_buffer_subdata(struct pipe_context * pipe,struct pipe_resource * resource,unsigned usage,unsigned offset,unsigned size,const void * data)85 static void virgl_buffer_subdata(struct pipe_context *pipe,
86 struct pipe_resource *resource,
87 unsigned usage, unsigned offset,
88 unsigned size, const void *data)
89 {
90 struct pipe_box box;
91
92 if (offset == 0 && size == resource->width0)
93 usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
94 else
95 usage |= PIPE_TRANSFER_DISCARD_RANGE;
96
97 u_box_1d(offset, size, &box);
98 virgl_transfer_inline_write(pipe, resource, 0, usage, &box, data, 0, 0);
99 }
100
virgl_init_context_resource_functions(struct pipe_context * ctx)101 void virgl_init_context_resource_functions(struct pipe_context *ctx)
102 {
103 ctx->transfer_map = u_transfer_map_vtbl;
104 ctx->transfer_flush_region = u_transfer_flush_region_vtbl;
105 ctx->transfer_unmap = u_transfer_unmap_vtbl;
106 ctx->buffer_subdata = virgl_buffer_subdata;
107 ctx->texture_subdata = u_default_texture_subdata;
108 }
109