1 /**************************************************************************
3 * Copyright 2010 VMware, Inc.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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 VMWARE 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.
26 **************************************************************************/
28 #include "lp_context.h"
30 #include "lp_texture.h"
32 #include "util/u_memory.h"
33 #include "draw/draw_context.h"
35 static struct pipe_stream_output_target *
36 llvmpipe_create_so_target(struct pipe_context *pipe,
37 struct pipe_resource *buffer,
38 unsigned buffer_offset,
41 struct draw_so_target *t;
43 t = CALLOC_STRUCT(draw_so_target);
47 t->target.context = pipe;
48 t->target.reference.count = 1;
49 pipe_resource_reference(&t->target.buffer, buffer);
50 t->target.buffer_offset = buffer_offset;
51 t->target.buffer_size = buffer_size;
56 llvmpipe_so_target_destroy(struct pipe_context *pipe,
57 struct pipe_stream_output_target *target)
59 pipe_resource_reference(&target->buffer, NULL);
64 llvmpipe_set_so_targets(struct pipe_context *pipe,
66 struct pipe_stream_output_target **targets,
67 unsigned append_bitmask)
69 struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
71 for (i = 0; i < num_targets; i++) {
72 pipe_so_target_reference((struct pipe_stream_output_target **)&llvmpipe->so_targets[i], targets[i]);
73 /* if we're not appending then lets reset the internal
74 data of our so target */
75 if (!(append_bitmask & (1 << i)) && llvmpipe->so_targets[i]) {
76 llvmpipe->so_targets[i]->internal_offset = 0;
77 llvmpipe->so_targets[i]->emitted_vertices = 0;
81 for (; i < llvmpipe->num_so_targets; i++) {
82 pipe_so_target_reference((struct pipe_stream_output_target **)&llvmpipe->so_targets[i], NULL);
84 llvmpipe->num_so_targets = num_targets;
88 llvmpipe_init_so_funcs(struct llvmpipe_context *pipe)
90 pipe->pipe.create_stream_output_target = llvmpipe_create_so_target;
91 pipe->pipe.stream_output_target_destroy = llvmpipe_so_target_destroy;
92 pipe->pipe.set_stream_output_targets = llvmpipe_set_so_targets;