1/**************************************************************************
2 *
3 * Copyright 2011 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
28#ifndef vl_zscan_h
29#define vl_zscan_h
30
31#include "pipe/p_compiler.h"
32#include "pipe/p_state.h"
33
34/*
35 * shader based zscan and quantification
36 * expect usage of vl_vertex_buffers as a todo list
37 */
38struct vl_zscan
39{
40   struct pipe_context *pipe;
41
42   unsigned buffer_width;
43   unsigned buffer_height;
44
45   unsigned num_channels;
46
47   unsigned blocks_per_line;
48   unsigned blocks_total;
49
50   void *rs_state;
51   void *blend;
52
53   void *samplers[3];
54
55   void *vs, *fs;
56};
57
58struct vl_zscan_buffer
59{
60   struct pipe_viewport_state viewport;
61   struct pipe_framebuffer_state fb_state;
62
63   struct pipe_sampler_view *src, *layout, *quant;
64   struct pipe_surface *dst;
65};
66
67extern const int vl_zscan_linear[];
68extern const int vl_zscan_normal[];
69extern const int vl_zscan_alternate[];
70
71struct pipe_sampler_view *
72vl_zscan_layout(struct pipe_context *pipe, const int layout[64], unsigned blocks_per_line);
73
74bool
75vl_zscan_init(struct vl_zscan *zscan, struct pipe_context *pipe,
76              unsigned buffer_width, unsigned buffer_height,
77              unsigned blocks_per_line, unsigned blocks_total,
78              unsigned num_channels);
79
80void
81vl_zscan_cleanup(struct vl_zscan *zscan);
82
83bool
84vl_zscan_init_buffer(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
85                     struct pipe_sampler_view *src, struct pipe_surface *dst);
86
87void
88vl_zscan_cleanup_buffer(struct vl_zscan_buffer *buffer);
89
90void
91vl_zscan_set_layout(struct vl_zscan_buffer *buffer, struct pipe_sampler_view *layout);
92
93void
94vl_zscan_upload_quant(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
95                      const uint8_t matrix[64], bool intra);
96
97void
98vl_zscan_render(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer, unsigned num_instances);
99
100#endif
101