1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 **********************************************************/
25
26 #include "util/u_inlines.h"
27 #include "pipe/p_defines.h"
28 #include "util/u_math.h"
29 #include "util/u_memory.h"
30 #include "util/u_transfer.h"
31 #include "tgsi/tgsi_parse.h"
32
33 #include "svga_screen.h"
34 #include "svga_resource_buffer.h"
35 #include "svga_context.h"
36
37
svga_set_vertex_buffers(struct pipe_context * pipe,unsigned count,const struct pipe_vertex_buffer * buffers)38 static void svga_set_vertex_buffers(struct pipe_context *pipe,
39 unsigned count,
40 const struct pipe_vertex_buffer *buffers)
41 {
42 struct svga_context *svga = svga_context(pipe);
43 unsigned i;
44 boolean any_user_buffer = FALSE;
45
46 /* Check for no change */
47 if (count == svga->curr.num_vertex_buffers &&
48 memcmp(svga->curr.vb, buffers, count * sizeof buffers[0]) == 0)
49 return;
50
51 /* Adjust refcounts */
52 for (i = 0; i < count; i++) {
53 pipe_resource_reference(&svga->curr.vb[i].buffer, buffers[i].buffer);
54 if (svga_buffer_is_user_buffer(buffers[i].buffer))
55 any_user_buffer = TRUE;
56 }
57
58 for ( ; i < svga->curr.num_vertex_buffers; i++)
59 pipe_resource_reference(&svga->curr.vb[i].buffer, NULL);
60
61 /* Copy remaining data */
62 memcpy(svga->curr.vb, buffers, count * sizeof buffers[0]);
63 svga->curr.num_vertex_buffers = count;
64 svga->curr.any_user_vertex_buffers = any_user_buffer;
65
66 svga->dirty |= SVGA_NEW_VBUFFER;
67 }
68
69
svga_set_index_buffer(struct pipe_context * pipe,const struct pipe_index_buffer * ib)70 static void svga_set_index_buffer(struct pipe_context *pipe,
71 const struct pipe_index_buffer *ib)
72 {
73 struct svga_context *svga = svga_context(pipe);
74
75 if (ib) {
76 pipe_resource_reference(&svga->curr.ib.buffer, ib->buffer);
77 memcpy(&svga->curr.ib, ib, sizeof(svga->curr.ib));
78 }
79 else {
80 pipe_resource_reference(&svga->curr.ib.buffer, NULL);
81 memset(&svga->curr.ib, 0, sizeof(svga->curr.ib));
82 }
83
84 /* TODO make this more like a state */
85 }
86
87
88 static void *
svga_create_vertex_elements_state(struct pipe_context * pipe,unsigned count,const struct pipe_vertex_element * attribs)89 svga_create_vertex_elements_state(struct pipe_context *pipe,
90 unsigned count,
91 const struct pipe_vertex_element *attribs)
92 {
93 struct svga_velems_state *velems;
94 assert(count <= PIPE_MAX_ATTRIBS);
95 velems = (struct svga_velems_state *) MALLOC(sizeof(struct svga_velems_state));
96 if (velems) {
97 velems->count = count;
98 memcpy(velems->velem, attribs, sizeof(*attribs) * count);
99 }
100 return velems;
101 }
102
svga_bind_vertex_elements_state(struct pipe_context * pipe,void * velems)103 static void svga_bind_vertex_elements_state(struct pipe_context *pipe,
104 void *velems)
105 {
106 struct svga_context *svga = svga_context(pipe);
107 struct svga_velems_state *svga_velems = (struct svga_velems_state *) velems;
108
109 svga->curr.velems = svga_velems;
110 svga->dirty |= SVGA_NEW_VELEMENT;
111 }
112
svga_delete_vertex_elements_state(struct pipe_context * pipe,void * velems)113 static void svga_delete_vertex_elements_state(struct pipe_context *pipe,
114 void *velems)
115 {
116 FREE(velems);
117 }
118
svga_cleanup_vertex_state(struct svga_context * svga)119 void svga_cleanup_vertex_state( struct svga_context *svga )
120 {
121 unsigned i;
122
123 for (i = 0 ; i < svga->curr.num_vertex_buffers; i++)
124 pipe_resource_reference(&svga->curr.vb[i].buffer, NULL);
125 }
126
127
svga_init_vertex_functions(struct svga_context * svga)128 void svga_init_vertex_functions( struct svga_context *svga )
129 {
130 svga->pipe.set_vertex_buffers = svga_set_vertex_buffers;
131 svga->pipe.set_index_buffer = svga_set_index_buffer;
132 svga->pipe.create_vertex_elements_state = svga_create_vertex_elements_state;
133 svga->pipe.bind_vertex_elements_state = svga_bind_vertex_elements_state;
134 svga->pipe.delete_vertex_elements_state = svga_delete_vertex_elements_state;
135 }
136
137
138