vl_vertex_buffers.h revision 57018734023b41ef84f5be560c12dce6ae5f1c58 
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   float *buffer;
39};
40
41struct pipe_vertex_buffer vl_vb_upload_quads(struct pipe_context *pipe, unsigned max_blocks);
42
43bool vl_vb_init(struct vl_vertex_buffer *buffer, unsigned max_blocks, unsigned num_elements);
44
45static inline void
46vl_vb_add_block(struct vl_vertex_buffer *buffer, float *elements)
47{
48   float *pos;
49   unsigned i;
50
51   assert(buffer);
52
53   for(i = 0; i < 4; ++i) {
54      pos = buffer->buffer + buffer->num_verts * buffer->num_elements;
55      memcpy(pos, elements, sizeof(float) * buffer->num_elements);
56      buffer->num_verts++;
57   }
58}
59
60unsigned vl_vb_upload(struct vl_vertex_buffer *buffer, void *dst);
61
62void vl_vb_cleanup(struct vl_vertex_buffer *buffer);
63
64#endif
65