Merge branch 'mesa_7_7_branch'
[mesa.git] / src / gallium / drivers / svga / svga_pipe_vertex.c
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 "pipe/p_inlines.h"
27 #include "pipe/p_defines.h"
28 #include "util/u_math.h"
29 #include "util/u_memory.h"
30 #include "tgsi/tgsi_parse.h"
31
32 #include "svga_screen.h"
33 #include "svga_screen_buffer.h"
34 #include "svga_context.h"
35 #include "svga_state.h"
36 #include "svga_winsys.h"
37
38 #include "svga_hw_reg.h"
39
40
41 static void svga_set_vertex_buffers(struct pipe_context *pipe,
42 unsigned count,
43 const struct pipe_vertex_buffer *buffers)
44 {
45 struct svga_context *svga = svga_context(pipe);
46 unsigned i;
47 boolean any_user_buffer = FALSE;
48
49 /* Check for no change */
50 if (count == svga->curr.num_vertex_buffers &&
51 memcmp(svga->curr.vb, buffers, count * sizeof buffers[0]) == 0)
52 return;
53
54 /* Adjust refcounts */
55 for (i = 0; i < count; i++) {
56 pipe_buffer_reference(&svga->curr.vb[i].buffer, buffers[i].buffer);
57 if (svga_buffer(buffers[i].buffer)->user)
58 any_user_buffer = TRUE;
59 }
60
61 for ( ; i < svga->curr.num_vertex_buffers; i++)
62 pipe_buffer_reference(&svga->curr.vb[i].buffer, NULL);
63
64 /* Copy remaining data */
65 memcpy(svga->curr.vb, buffers, count * sizeof buffers[0]);
66 svga->curr.num_vertex_buffers = count;
67 svga->curr.any_user_vertex_buffers = any_user_buffer;
68
69 svga->dirty |= SVGA_NEW_VBUFFER;
70 }
71
72 static void svga_set_vertex_elements(struct pipe_context *pipe,
73 unsigned count,
74 const struct pipe_vertex_element *elements)
75 {
76 struct svga_context *svga = svga_context(pipe);
77 unsigned i;
78
79 for (i = 0; i < count; i++)
80 svga->curr.ve[i] = elements[i];
81
82 svga->curr.num_vertex_elements = count;
83 svga->dirty |= SVGA_NEW_VELEMENT;
84 }
85
86
87 void svga_cleanup_vertex_state( struct svga_context *svga )
88 {
89 unsigned i;
90
91 for (i = 0 ; i < svga->curr.num_vertex_buffers; i++)
92 pipe_buffer_reference(&svga->curr.vb[i].buffer, NULL);
93 }
94
95
96 void svga_init_vertex_functions( struct svga_context *svga )
97 {
98 svga->pipe.set_vertex_buffers = svga_set_vertex_buffers;
99 svga->pipe.set_vertex_elements = svga_set_vertex_elements;
100 }
101
102