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
111
112
113
114
115
116
117
118
119
120
121
122
|
/*
* Copyright 2015 The Etc2Comp Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "EtcBlock4x4Encoding_RGB8.h"
namespace Etc
{
class Block4x4EncodingBits_R11;
// ################################################################################
// Block4x4Encoding_R11
// ################################################################################
class Block4x4Encoding_R11 : public Block4x4Encoding_RGB8
{
public:
Block4x4Encoding_R11(void);
virtual ~Block4x4Encoding_R11(void);
virtual void InitFromSource(Block4x4 *a_pblockParent,
ColorFloatRGBA *a_pafrgbaSource,
unsigned char *a_paucEncodingBits, ErrorMetric a_errormetric);
virtual void InitFromEncodingBits(Block4x4 *a_pblockParent,
unsigned char *a_paucEncodingBits,
ColorFloatRGBA *a_pafrgbaSource,
ErrorMetric a_errormetric);
virtual void PerformIteration(float a_fEffort);
virtual void SetEncodingBits(void);
inline float GetRedBase(void) const
{
return m_fRedBase;
}
inline float GetRedMultiplier(void) const
{
return m_fRedMultiplier;
}
inline int GetRedTableIndex(void) const
{
return m_uiRedModifierTableIndex;
}
inline const unsigned int * GetRedSelectors(void) const
{
return m_auiRedSelectors;
}
protected:
static const unsigned int MODIFIER_TABLE_ENTRYS = 16;
static const unsigned int SELECTOR_BITS = 3;
static const unsigned int SELECTORS = 1 << SELECTOR_BITS;
static float s_aafModifierTable[MODIFIER_TABLE_ENTRYS][SELECTORS];
void CalculateR11(unsigned int a_uiSelectorsUsed,
float a_fBaseRadius, float a_fMultiplierRadius);
inline float DecodePixelRed(float a_fBase, float a_fMultiplier,
unsigned int a_uiTableIndex, unsigned int a_uiSelector)
{
float fMultiplier = a_fMultiplier;
if (fMultiplier <= 0.0f)
{
fMultiplier = 1.0f / 8.0f;
}
float fPixelRed = a_fBase * 8 + 4 +
8 * fMultiplier*s_aafModifierTable[a_uiTableIndex][a_uiSelector]*255;
fPixelRed /= 2047.0f;
if (fPixelRed < 0.0f)
{
fPixelRed = 0.0f;
}
else if (fPixelRed > 1.0f)
{
fPixelRed = 1.0f;
}
return fPixelRed;
}
Block4x4EncodingBits_R11 *m_pencodingbitsR11;
float m_fRedBase;
float m_fRedMultiplier;
float m_fRedBlockError;
unsigned int m_uiRedModifierTableIndex;
unsigned int m_auiRedSelectors[PIXELS];
};
// ----------------------------------------------------------------------------------------------------
//
} // namespace Etc
|