1 /*---------------------------------------------------------------------------*
2   Project:  Horizon
3   File:     gr_LookUpTable.cpp
4 
5   Copyright (C)2010 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: 33406 $
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, 128 );
52 
53                 for ( ++i; i < 0x80; ++i )
54                 {
55                     *command++ = Float32ToUnsignedFix12( table[ i ] ) |
56                                  Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
57                 }
58                 *command++ = 0;
59 
60                 *command++ = Float32ToUnsignedFix12( table[ i ] )|
61                              Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
62                 *command++ = PICA_CMD_HEADER_BURST( PICA_REG_FRAG_LIGHT_LUT_DATA0, 128 );
63 
64                 for ( ++i; i < 0xff; ++i )
65                 {
66                     *command++ = Float32ToUnsignedFix12( table[ i ] ) |
67                                  Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
68                 }
69 
70                 // Final difference value
71                 *command++ = Float32ToUnsignedFix12( table[ i ] ) |
72                              Float32ToFix12( lastDiffValue ) << 12;
73                 *command++ = 0;
74             }
75 
SetNotAbsTable(const f32 table[LOOKUP_TABLE_ELEMENT_NUM],const f32 lastDiffValue)76             void LookUpTable::SetNotAbsTable( const f32 table[ LOOKUP_TABLE_ELEMENT_NUM ],
77                                               const f32 lastDiffValue )
78             {
79                 bit32* command = m_TableCommand;
80 
81                 // When the input value is [0.0, 1.0]
82 
83                 const u32 LOOKUP_TABLE_HALF_ELEMENT_NUM = LOOKUP_TABLE_ELEMENT_NUM / 2;
84 
85                 u32 i      = LOOKUP_TABLE_HALF_ELEMENT_NUM;
86 
87                 *command++ = Float32ToUnsignedFix12( table[ i ] ) |
88                              Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
89                 *command++ = PICA_CMD_HEADER_BURST( PICA_REG_FRAG_LIGHT_LUT_DATA0, 128 );
90 
91                 for ( ++i; i < 0xff; ++i )
92                 {
93                     *command++ = Float32ToUnsignedFix12( table[ i ] ) |
94                                  Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
95                 }
96 
97                 // Final difference value
98                 *command++ = Float32ToUnsignedFix12( table[ i ] ) |
99                              Float32ToFix12( lastDiffValue ) << 12;
100                 *command++ = 0;
101 
102 
103                 // When the input value is [-1.0, 0.0]
104 
105                 i = 0;
106 
107                 *command++ = Float32ToUnsignedFix12( table[ i ] ) |
108                              Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
109                 *command++ = PICA_CMD_HEADER_BURST( PICA_REG_FRAG_LIGHT_LUT_DATA0, 128 );
110 
111                 for ( ++i; i < 0x80; ++i )
112                 {
113                     *command++ = Float32ToUnsignedFix12( table[ i ] ) |
114                                  Float32ToFix12( table[ i + 1 ] - table[ i ] ) << 12;
115                 }
116                 *command++ = 0;
117             }
118 
119         } // namespace CTR
120     } // namespace gr
121 } // namespace nn
122