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 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.
25 *
26 **************************************************************************/
27
28 #include "lp_context.h"
29 #include "lp_state.h"
30 #include "lp_texture.h"
31
32 #include "util/u_memory.h"
33 #include "draw/draw_context.h"
34
35
36 static void *
llvmpipe_create_stream_output_state(struct pipe_context * pipe,const struct pipe_stream_output_info * templ)37 llvmpipe_create_stream_output_state(struct pipe_context *pipe,
38 const struct pipe_stream_output_info *templ)
39 {
40 struct lp_so_state *so;
41 so = (struct lp_so_state *) CALLOC_STRUCT(lp_so_state);
42
43 if (so) {
44 so->base.num_outputs = templ->num_outputs;
45 memcpy(so->base.stride, templ->stride, sizeof(templ->stride));
46 memcpy(so->base.output, templ->output,
47 templ->num_outputs * sizeof(templ->output[0]));
48 }
49 return so;
50 }
51
52 static void
llvmpipe_bind_stream_output_state(struct pipe_context * pipe,void * so)53 llvmpipe_bind_stream_output_state(struct pipe_context *pipe,
54 void *so)
55 {
56 struct llvmpipe_context *lp = llvmpipe_context(pipe);
57 struct lp_so_state *lp_so = (struct lp_so_state *) so;
58
59 lp->so = lp_so;
60
61 lp->dirty |= LP_NEW_SO;
62
63 if (lp_so)
64 draw_set_so_state(lp->draw, &lp_so->base);
65 }
66
67 static void
llvmpipe_delete_stream_output_state(struct pipe_context * pipe,void * so)68 llvmpipe_delete_stream_output_state(struct pipe_context *pipe, void *so)
69 {
70 FREE( so );
71 }
72
73 static void
llvmpipe_set_stream_output_buffers(struct pipe_context * pipe,struct pipe_resource ** buffers,int * offsets,int num_buffers)74 llvmpipe_set_stream_output_buffers(struct pipe_context *pipe,
75 struct pipe_resource **buffers,
76 int *offsets,
77 int num_buffers)
78 {
79 struct llvmpipe_context *lp = llvmpipe_context(pipe);
80 int i;
81 void *map_buffers[PIPE_MAX_SO_BUFFERS];
82
83 assert(num_buffers <= PIPE_MAX_SO_BUFFERS);
84 if (num_buffers > PIPE_MAX_SO_BUFFERS)
85 num_buffers = PIPE_MAX_SO_BUFFERS;
86
87 lp->dirty |= LP_NEW_SO_BUFFERS;
88
89 for (i = 0; i < num_buffers; ++i) {
90 void *mapped;
91 struct llvmpipe_resource *res = llvmpipe_resource(buffers[i]);
92
93 if (!res) {
94 /* the whole call is invalid, bail out */
95 lp->so_target.num_buffers = 0;
96 draw_set_mapped_so_buffers(lp->draw, 0, 0);
97 return;
98 }
99
100 lp->so_target.buffer[i] = res;
101 lp->so_target.offset[i] = offsets[i];
102 lp->so_target.so_count[i] = 0;
103
104 mapped = res->data;
105 if (offsets[i] >= 0)
106 map_buffers[i] = ((char*)mapped) + offsets[i];
107 else {
108 /* this is a buffer append */
109 assert(!"appending not implemented");
110 map_buffers[i] = mapped;
111 }
112 }
113 lp->so_target.num_buffers = num_buffers;
114
115 draw_set_mapped_so_buffers(lp->draw, map_buffers, num_buffers);
116 }
117
118 void
llvmpipe_init_so_funcs(struct llvmpipe_context * llvmpipe)119 llvmpipe_init_so_funcs(struct llvmpipe_context *llvmpipe)
120 {
121 #if 0
122 llvmpipe->pipe.create_stream_output_state =
123 llvmpipe_create_stream_output_state;
124 llvmpipe->pipe.bind_stream_output_state =
125 llvmpipe_bind_stream_output_state;
126 llvmpipe->pipe.delete_stream_output_state =
127 llvmpipe_delete_stream_output_state;
128
129 llvmpipe->pipe.set_stream_output_buffers =
130 llvmpipe_set_stream_output_buffers;
131 #else
132 (void) llvmpipe_create_stream_output_state;
133 (void) llvmpipe_bind_stream_output_state;
134 (void) llvmpipe_delete_stream_output_state;
135 (void) llvmpipe_set_stream_output_buffers;
136 #endif
137 }
138