vl_vertex_buffers.h revision 794cde3f5ef59cf603be284fbc8de33d2cda7d2c 
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 <pipe/p_state.h>
31#include <pipe/p_video_state.h>
32#include "vl_types.h"
33
34/* vertex buffers act as a todo list
35 * uploading all the usefull informations to video ram
36 * so a vertex shader can work with them
37 */
38
39/* inputs to the vertex shaders */
40enum VS_INPUT
41{
42   VS_I_RECT,
43   VS_I_VPOS,
44   VS_I_EB,
45   VS_I_FLAGS,
46   VS_I_MV0_TOP,
47   VS_I_MV0_BOTTOM,
48   VS_I_MV1_TOP,
49   VS_I_MV1_BOTTOM,
50
51   NUM_VS_INPUTS
52};
53
54struct vl_vertex_buffer
55{
56   unsigned size;
57   unsigned num_not_empty;
58   unsigned num_empty;
59   struct pipe_resource *resource;
60   struct pipe_transfer *transfer;
61   struct vl_vertex_stream *start;
62   struct vl_vertex_stream *end;
63};
64
65struct pipe_vertex_buffer vl_vb_upload_quads(struct pipe_context *pipe,
66                                             unsigned blocks_x, unsigned blocks_y);
67
68void *vl_vb_get_elems_state(struct pipe_context *pipe, int component);
69
70struct pipe_vertex_buffer vl_vb_init(struct vl_vertex_buffer *buffer,
71                                     struct pipe_context *pipe,
72                                     unsigned max_blocks);
73
74void vl_vb_map(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
75
76void vl_vb_add_block(struct vl_vertex_buffer *buffer, struct pipe_mpeg12_macroblock *mb,
77                     const unsigned (*empty_block_mask)[3][2][2]);
78
79void vl_vb_unmap(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
80
81void vl_vb_restart(struct vl_vertex_buffer *buffer,
82                   unsigned *not_empty_start_instance, unsigned *not_empty_num_instances,
83                   unsigned *empty_start_instance, unsigned *empty_num_instances);
84
85void vl_vb_cleanup(struct vl_vertex_buffer *buffer);
86
87#endif
88