1/**************************************************************************
2 *
3 * Copyright 2010 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#include "sp_context.h"
29#include "sp_state.h"
30#include "sp_texture.h"
31
32#include "util/u_format.h"
33#include "util/u_memory.h"
34#include "draw/draw_context.h"
35#include "pipebuffer/pb_buffer.h"
36
37static struct pipe_stream_output_target *
38softpipe_create_so_target(struct pipe_context *pipe,
39                          struct pipe_resource *buffer,
40                          unsigned buffer_offset,
41                          unsigned buffer_size)
42{
43   struct draw_so_target *t;
44
45   t = CALLOC_STRUCT(draw_so_target);
46   t->target.context = pipe;
47   t->target.reference.count = 1;
48   pipe_resource_reference(&t->target.buffer, buffer);
49   t->target.buffer_offset = buffer_offset;
50   t->target.buffer_size = buffer_size;
51   return &t->target;
52}
53
54static void
55softpipe_so_target_destroy(struct pipe_context *pipe,
56                           struct pipe_stream_output_target *target)
57{
58   pipe_resource_reference(&target->buffer, NULL);
59   FREE(target);
60}
61
62static void
63softpipe_set_so_targets(struct pipe_context *pipe,
64                        unsigned num_targets,
65                        struct pipe_stream_output_target **targets,
66                        unsigned append_bitmask)
67{
68   struct softpipe_context *softpipe = softpipe_context(pipe);
69   int i;
70
71   for (i = 0; i < num_targets; i++) {
72      pipe_so_target_reference((struct pipe_stream_output_target **)&softpipe->so_targets[i], targets[i]);
73   }
74
75   for (; i < softpipe->num_so_targets; i++) {
76      pipe_so_target_reference((struct pipe_stream_output_target **)&softpipe->so_targets[i], NULL);
77   }
78
79   softpipe->num_so_targets = num_targets;
80}
81
82void
83softpipe_init_streamout_funcs(struct pipe_context *pipe)
84{
85   pipe->create_stream_output_target = softpipe_create_so_target;
86   pipe->stream_output_target_destroy = softpipe_so_target_destroy;
87   pipe->set_stream_output_targets = softpipe_set_so_targets;
88}
89
90