vl_vertex_buffers.h revision 1482b9a7f39ec8875fcd4137c35b3cb9ac0c0934 
1/**************************************************************************
2 *
3 * Copyright 2010 Christian König
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 TUNGSTEN GRAPHICS 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#ifndef vl_vertex_buffers_h
28#define vl_vertex_buffers_h
29
30#include <assert.h>
31#include <pipe/p_state.h>
32#include "vl_types.h"
33
34struct vl_vertex_buffer
35{
36   unsigned num_verts;
37   unsigned num_elements;
38   struct pipe_resource *resource;
39   struct pipe_transfer *transfer;
40   float *vectors;
41};
42
43struct pipe_vertex_buffer vl_vb_upload_quads(struct pipe_context *pipe, unsigned max_blocks);
44
45struct pipe_vertex_element vl_vb_get_quad_vertex_element();
46
47unsigned vl_vb_element_helper(struct pipe_vertex_element* elements, unsigned num_elements,
48                              unsigned vertex_buffer_index);
49
50struct pipe_vertex_buffer vl_vb_init(struct vl_vertex_buffer *buffer,
51                                     struct pipe_context *pipe,
52                                     unsigned max_blocks, unsigned num_elements,
53                                     unsigned stride);
54
55void vl_vb_map(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
56
57static inline void
58vl_vb_add_block(struct vl_vertex_buffer *buffer, float *elements)
59{
60   float *pos;
61   unsigned i;
62
63   assert(buffer);
64
65   for(i = 0; i < 4; ++i) {
66      pos = buffer->vectors + buffer->num_verts * buffer->num_elements;
67      memcpy(pos, elements, sizeof(float) * buffer->num_elements);
68      buffer->num_verts++;
69   }
70}
71
72void vl_vb_unmap(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
73
74unsigned vl_vb_restart(struct vl_vertex_buffer *buffer);
75
76void vl_vb_cleanup(struct vl_vertex_buffer *buffer);
77
78#endif
79