1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
/*
* Copyright 2011, Blender Foundation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "device.h"
#include "scene.h"
#include "tables.h"
#include "util_debug.h"
CCL_NAMESPACE_BEGIN
/* Lookup Tables */
LookupTables::LookupTables()
{
need_update = true;
}
LookupTables::~LookupTables()
{
assert(lookup_tables.size() == 0);
}
void LookupTables::device_update(Device *device, DeviceScene *dscene)
{
if(!need_update)
return;
device->tex_alloc("__lookup_table", dscene->lookup_table);
need_update = false;
}
void LookupTables::device_free(Device *device, DeviceScene *dscene)
{
device->tex_free(dscene->lookup_table);
dscene->lookup_table.clear();
}
static size_t round_up_to_multiple(size_t size, size_t chunk)
{
return ((size + chunk - 1)/chunk) * chunk;
}
size_t LookupTables::add_table(DeviceScene *dscene, vector<float>& data)
{
assert(data.size() > 0);
need_update = true;
Table new_table;
new_table.offset = 0;
new_table.size = round_up_to_multiple(data.size(), TABLE_CHUNK_SIZE);
/* find space to put lookup table */
list<Table>::iterator table;
for(table = lookup_tables.begin(); table != lookup_tables.end(); table++) {
if(new_table.offset + new_table.size <= table->offset) {
lookup_tables.insert(table, new_table);
break;
}
else
new_table.offset = table->offset + table->size;
}
if(table == lookup_tables.end()) {
/* add at the end */
lookup_tables.push_back(new_table);
dscene->lookup_table.resize(new_table.offset + new_table.size);
}
/* copy table data and return offset */
dscene->lookup_table.copy_at(&data[0], new_table.offset, data.size());
return new_table.offset;
}
void LookupTables::remove_table(size_t offset)
{
need_update = true;
list<Table>::iterator table;
for(table = lookup_tables.begin(); table != lookup_tables.end(); table++) {
if(table->offset == offset) {
lookup_tables.erase(table);
return;
}
}
assert(table != lookup_tables.end());
}
CCL_NAMESPACE_END
|
