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1 /**************************************************************************
2  *
3  * Copyright 2007 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 /* Authors:  Keith Whitwell <keithw@vmware.com>
29  */
30 
31 
32 #include "lp_context.h"
33 #include "lp_state.h"
34 
35 #include "draw/draw_context.h"
36 #include "util/u_helpers.h"
37 #include "util/u_inlines.h"
38 #include "util/u_transfer.h"
39 
40 
41 static void *
llvmpipe_create_vertex_elements_state(struct pipe_context * pipe,unsigned count,const struct pipe_vertex_element * attribs)42 llvmpipe_create_vertex_elements_state(struct pipe_context *pipe,
43                                       unsigned count,
44                                       const struct pipe_vertex_element *attribs)
45 {
46    struct lp_velems_state *velems;
47    assert(count <= PIPE_MAX_ATTRIBS);
48    velems = (struct lp_velems_state *) MALLOC(sizeof(struct lp_velems_state));
49    if (velems) {
50       velems->count = count;
51       memcpy(velems->velem, attribs, sizeof(*attribs) * count);
52    }
53    return velems;
54 }
55 
56 static void
llvmpipe_bind_vertex_elements_state(struct pipe_context * pipe,void * velems)57 llvmpipe_bind_vertex_elements_state(struct pipe_context *pipe,
58                                     void *velems)
59 {
60    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
61    struct lp_velems_state *lp_velems = (struct lp_velems_state *) velems;
62 
63    llvmpipe->velems = lp_velems;
64 
65    llvmpipe->dirty |= LP_NEW_VERTEX;
66 
67    if (velems)
68       draw_set_vertex_elements(llvmpipe->draw, lp_velems->count, lp_velems->velem);
69 }
70 
71 static void
llvmpipe_delete_vertex_elements_state(struct pipe_context * pipe,void * velems)72 llvmpipe_delete_vertex_elements_state(struct pipe_context *pipe, void *velems)
73 {
74    FREE( velems );
75 }
76 
77 static void
llvmpipe_set_vertex_buffers(struct pipe_context * pipe,unsigned start_slot,unsigned count,const struct pipe_vertex_buffer * buffers)78 llvmpipe_set_vertex_buffers(struct pipe_context *pipe,
79                             unsigned start_slot, unsigned count,
80                             const struct pipe_vertex_buffer *buffers)
81 {
82    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
83 
84    assert(count <= PIPE_MAX_ATTRIBS);
85 
86    util_set_vertex_buffers_count(llvmpipe->vertex_buffer,
87                                  &llvmpipe->num_vertex_buffers,
88                                  buffers, start_slot, count);
89 
90    llvmpipe->dirty |= LP_NEW_VERTEX;
91 
92    draw_set_vertex_buffers(llvmpipe->draw, start_slot, count, buffers);
93 }
94 
95 
96 static void
llvmpipe_set_index_buffer(struct pipe_context * pipe,const struct pipe_index_buffer * ib)97 llvmpipe_set_index_buffer(struct pipe_context *pipe,
98                           const struct pipe_index_buffer *ib)
99 {
100    struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe);
101 
102    if (ib)
103       memcpy(&llvmpipe->index_buffer, ib, sizeof(llvmpipe->index_buffer));
104    else
105       memset(&llvmpipe->index_buffer, 0, sizeof(llvmpipe->index_buffer));
106 }
107 
108 void
llvmpipe_init_vertex_funcs(struct llvmpipe_context * llvmpipe)109 llvmpipe_init_vertex_funcs(struct llvmpipe_context *llvmpipe)
110 {
111    llvmpipe->pipe.create_vertex_elements_state = llvmpipe_create_vertex_elements_state;
112    llvmpipe->pipe.bind_vertex_elements_state = llvmpipe_bind_vertex_elements_state;
113    llvmpipe->pipe.delete_vertex_elements_state = llvmpipe_delete_vertex_elements_state;
114 
115    llvmpipe->pipe.set_vertex_buffers = llvmpipe_set_vertex_buffers;
116    llvmpipe->pipe.set_index_buffer = llvmpipe_set_index_buffer;
117 }
118