1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
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:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
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
24 **********************************************************/
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 "tgsi/tgsi_parse.h"
32 #include "svga_screen.h"
33 #include "svga_resource_buffer.h"
34 #include "svga_context.h"
37 static void svga_set_vertex_buffers(struct pipe_context *pipe,
39 const struct pipe_vertex_buffer *buffers)
41 struct svga_context *svga = svga_context(pipe);
43 boolean any_user_buffer = FALSE;
45 /* Check for no change */
46 if (count == svga->curr.num_vertex_buffers &&
47 memcmp(svga->curr.vb, buffers, count * sizeof buffers[0]) == 0)
50 /* Adjust refcounts */
51 for (i = 0; i < count; i++) {
52 pipe_resource_reference(&svga->curr.vb[i].buffer, buffers[i].buffer);
53 if (svga_buffer_is_user_buffer(buffers[i].buffer))
54 any_user_buffer = TRUE;
57 for ( ; i < svga->curr.num_vertex_buffers; i++)
58 pipe_resource_reference(&svga->curr.vb[i].buffer, NULL);
60 /* Copy remaining data */
61 memcpy(svga->curr.vb, buffers, count * sizeof buffers[0]);
62 svga->curr.num_vertex_buffers = count;
63 svga->curr.any_user_vertex_buffers = any_user_buffer;
65 svga->dirty |= SVGA_NEW_VBUFFER;
70 svga_create_vertex_elements_state(struct pipe_context *pipe,
72 const struct pipe_vertex_element *attribs)
74 struct svga_velems_state *velems;
75 assert(count <= PIPE_MAX_ATTRIBS);
76 velems = (struct svga_velems_state *) MALLOC(sizeof(struct svga_velems_state));
78 velems->count = count;
79 memcpy(velems->velem, attribs, sizeof(*attribs) * count);
84 static void svga_bind_vertex_elements_state(struct pipe_context *pipe,
87 struct svga_context *svga = svga_context(pipe);
88 struct svga_velems_state *svga_velems = (struct svga_velems_state *) velems;
90 svga->curr.velems = svga_velems;
91 svga->dirty |= SVGA_NEW_VELEMENT;
94 static void svga_delete_vertex_elements_state(struct pipe_context *pipe,
100 void svga_cleanup_vertex_state( struct svga_context *svga )
104 for (i = 0 ; i < svga->curr.num_vertex_buffers; i++)
105 pipe_resource_reference(&svga->curr.vb[i].buffer, NULL);
109 void svga_init_vertex_functions( struct svga_context *svga )
111 svga->pipe.set_vertex_buffers = svga_set_vertex_buffers;
112 svga->pipe.create_vertex_elements_state = svga_create_vertex_elements_state;
113 svga->pipe.bind_vertex_elements_state = svga_bind_vertex_elements_state;
114 svga->pipe.delete_vertex_elements_state = svga_delete_vertex_elements_state;