1 #ifndef _RRGENERICVECTOR_HPP
2 #define _RRGENERICVECTOR_HPP
3 /*-------------------------------------------------------------------------
4 * drawElements Quality Program Reference Renderer
5 * -----------------------------------------------
6 *
7 * Copyright 2014 The Android Open Source Project
8 *
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 *
21 *//*!
22 * \file
23 * \brief Generic vetor
24 *//*--------------------------------------------------------------------*/
25
26 #include "rrDefs.hpp"
27 #include "tcuVector.hpp"
28
29 namespace rr
30 {
31
32 enum GenericVecType
33 {
34 GENERICVECTYPE_FLOAT = 0,
35 GENERICVECTYPE_UINT32,
36 GENERICVECTYPE_INT32,
37
38 GENERICVECTYPE_LAST
39 };
40
41 /*--------------------------------------------------------------------*//*!
42 * \brief Generic vertex attrib
43 *
44 * Generic vertex attributes hold 4 32-bit scalar values that can be accessed
45 * as floating-point or integer values.
46 *
47 * Aliasing rules must be adhered when accessing data (ie. writing as float
48 * and reading as int has undefined result).
49 *//*--------------------------------------------------------------------*/
50 class GenericVec4
51 {
52 private:
53 union
54 {
55 uint32_t uData[4];
56 int32_t iData[4];
57 float fData[4];
58 } v;
59
60 public:
GenericVec4(void)61 inline GenericVec4(void)
62 {
63 v.iData[0] = 0;
64 v.iData[1] = 0;
65 v.iData[2] = 0;
66 v.iData[3] = 0;
67 }
68
69 template <typename ScalarType>
GenericVec4(const tcu::Vector<ScalarType,4> & value)70 explicit GenericVec4(const tcu::Vector<ScalarType, 4> &value)
71 {
72 *this = value;
73 }
74
GenericVec4(const GenericVec4 & other)75 inline GenericVec4(const GenericVec4 &other)
76 {
77 v.iData[0] = other.v.iData[0];
78 v.iData[1] = other.v.iData[1];
79 v.iData[2] = other.v.iData[2];
80 v.iData[3] = other.v.iData[3];
81 }
82
operator =(const GenericVec4 & value)83 GenericVec4 &operator=(const GenericVec4 &value)
84 {
85 v.iData[0] = value.v.iData[0];
86 v.iData[1] = value.v.iData[1];
87 v.iData[2] = value.v.iData[2];
88 v.iData[3] = value.v.iData[3];
89 return *this;
90 }
91
92 template <typename ScalarType>
operator =(const tcu::Vector<ScalarType,4> & value)93 GenericVec4 &operator=(const tcu::Vector<ScalarType, 4> &value)
94 {
95 getAccess<ScalarType>()[0] = value[0];
96 getAccess<ScalarType>()[1] = value[1];
97 getAccess<ScalarType>()[2] = value[2];
98 getAccess<ScalarType>()[3] = value[3];
99 return *this;
100 }
101
102 template <typename ScalarType>
get(void) const103 inline tcu::Vector<ScalarType, 4> get(void) const
104 {
105 return tcu::Vector<ScalarType, 4>(getAccess<ScalarType>()[0], getAccess<ScalarType>()[1],
106 getAccess<ScalarType>()[2], getAccess<ScalarType>()[3]);
107 }
108
109 template <typename ScalarType>
110 inline ScalarType *getAccess();
111
112 template <typename ScalarType>
113 inline const ScalarType *getAccess() const;
114 } DE_WARN_UNUSED_TYPE;
115
116 template <>
getAccess()117 inline float *GenericVec4::getAccess<float>()
118 {
119 return v.fData;
120 }
121
122 template <>
getAccess() const123 inline const float *GenericVec4::getAccess<float>() const
124 {
125 return v.fData;
126 }
127
128 template <>
getAccess()129 inline uint32_t *GenericVec4::getAccess<uint32_t>()
130 {
131 return v.uData;
132 }
133
134 template <>
getAccess() const135 inline const uint32_t *GenericVec4::getAccess<uint32_t>() const
136 {
137 return v.uData;
138 }
139
140 template <>
getAccess()141 inline int32_t *GenericVec4::getAccess<int32_t>()
142 {
143 return v.iData;
144 }
145
146 template <>
getAccess() const147 inline const int32_t *GenericVec4::getAccess<int32_t>() const
148 {
149 return v.iData;
150 }
151
152 } // namespace rr
153
154 #endif // _RRGENERICVECTOR_HPP
155