1 /*
2 * Copyright 2010 Red Hat Inc.
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 * Authors: Dave Airlie <airlied@redhat.com>
24 */
25
26 #include "r600_pipe.h"
27 #include "util/u_index_modify.h"
28 #include "util/u_upload_mgr.h"
29
30
r600_translate_index_buffer(struct r600_context * r600,struct pipe_index_buffer * ib,unsigned count)31 void r600_translate_index_buffer(struct r600_context *r600,
32 struct pipe_index_buffer *ib,
33 unsigned count)
34 {
35 struct pipe_resource *out_buffer = NULL;
36 unsigned out_offset;
37 void *ptr;
38
39 switch (ib->index_size) {
40 case 1:
41 u_upload_alloc(r600->uploader, 0, count * 2,
42 &out_offset, &out_buffer, &ptr);
43
44 util_shorten_ubyte_elts_to_userptr(
45 &r600->context, ib, 0, ib->offset, count, ptr);
46
47 pipe_resource_reference(&ib->buffer, NULL);
48 ib->buffer = out_buffer;
49 ib->offset = out_offset;
50 ib->index_size = 2;
51 break;
52 }
53 }
54