1 /*---------------------------------------------------------------------------*
2   Project:  Horizon
3   File:     gr_LookUpTable.cpp
4 
5   Copyright (C)2009-2012 Nintendo Co., Ltd.  All rights reserved.
6 
7   These coded instructions, statements, and computer programs contain
8   proprietary information of Nintendo of America Inc. and/or Nintendo
9   Company Ltd., and are protected by Federal copyright law.  They may
10   not be disclosed to third parties or copied or duplicated in any form,
11   in whole or in part, without the prior written consent of Nintendo.
12 
13   $Rev: 46347 $
14  *---------------------------------------------------------------------------*/
15 
16 #include <nn/gr/CTR/gr_LookUpTable.h>
17 
18 namespace nn
19 {
20     namespace gr
21     {
22         namespace CTR
23         {
24 
SetTable(const f32 table[LOOKUP_TABLE_ELEMENT_NUM],const f32 lastDiffValue,const bool isInputAbs)25             void LookUpTable::SetTable( const f32 table[ LOOKUP_TABLE_ELEMENT_NUM ],
26                                         const f32 lastDiffValue,
27                                         const bool isInputAbs )
28             {
29                 // When the input value is [0.0, 1.0]
30                 if ( isInputAbs )
31                 {
32                     SetAbsTable( table, lastDiffValue );
33                 }
34                 // When the input value is [-1.0, 1.0]
35                 else
36                 {
37                     SetNotAbsTable( table, lastDiffValue );
38                 }
39             }
40 
SetAbsTable(const f32 table[LOOKUP_TABLE_ELEMENT_NUM],const f32 lastDiffValue)41             void LookUpTable::SetAbsTable( const f32 table[ LOOKUP_TABLE_ELEMENT_NUM ],
42                                            const f32 lastDiffValue )
43             {
44                 bit32* command = m_TableCommand;
45 
46                 // When the input value is [0.0, 1.0]
47 
48                 int i = 0;
49                 *command++ = Float32ToUnsignedFix12( table[ i ] ) |
50                              Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
51                 *command++ = PICA_CMD_HEADER_BURST( PICA_REG_FRAG_LIGHT_LUT_DATA0, 256 );
52 
53                 for ( ++i; i < 0xff; ++i )
54                 {
55                     *command++ = Float32ToUnsignedFix12( table[ i ] ) |
56                                  Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
57                 }
58 
59                 // Final difference value
60                 *command++ = Float32ToUnsignedFix12( table[ i ] ) |
61                              Float32ToFix12( lastDiffValue ) << 12;
62                 *command++ = 0;
63             }
64 
SetNotAbsTable(const f32 table[LOOKUP_TABLE_ELEMENT_NUM],const f32 lastDiffValue)65             void LookUpTable::SetNotAbsTable( const f32 table[ LOOKUP_TABLE_ELEMENT_NUM ],
66                                               const f32 lastDiffValue )
67             {
68                 bit32* command = m_TableCommand;
69 
70                 // When the input value is [0.0, 1.0]
71 
72                 const u32 LOOKUP_TABLE_HALF_ELEMENT_NUM = LOOKUP_TABLE_ELEMENT_NUM / 2;
73 
74                 u32 i      = LOOKUP_TABLE_HALF_ELEMENT_NUM;
75 
76                 *command++ = Float32ToUnsignedFix12( table[ i ] ) |
77                              Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
78                 *command++ = PICA_CMD_HEADER_BURST( PICA_REG_FRAG_LIGHT_LUT_DATA0, 256 );
79 
80                 for ( ++i; i < 0xff; ++i )
81                 {
82                     *command++ = Float32ToUnsignedFix12( table[ i ] ) |
83                                  Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
84                 }
85 
86                 // Final difference value
87                 *command++ = Float32ToUnsignedFix12( table[ i ] ) |
88                              Float32ToFix12( lastDiffValue ) << 12;
89 
90                 // When the input value is [-1.0, 0.0]
91 
92                 i = 0;
93 
94                 *command++ = Float32ToUnsignedFix12( table[ i ] ) |
95                              Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
96 
97                 for ( ++i; i < 0x80; ++i )
98                 {
99                     *command++ = Float32ToUnsignedFix12( table[ i ] ) |
100                                  Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
101                 }
102                 *command++ = 0;
103             }
104 
105         } // namespace CTR
106     } // namespace gr
107 } // namespace nn
108