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 deUint32 uData[4];
56 deInt32 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
operator =(const GenericVec4 & value)75 GenericVec4& operator= (const GenericVec4& value)
76 {
77 v.iData[0] = value.v.iData[0];
78 v.iData[1] = value.v.iData[1];
79 v.iData[2] = value.v.iData[2];
80 v.iData[3] = value.v.iData[3];
81 return *this;
82 }
83
84 template<typename ScalarType>
operator =(const tcu::Vector<ScalarType,4> & value)85 GenericVec4& operator= (const tcu::Vector<ScalarType, 4>& value)
86 {
87 getAccess<ScalarType>()[0] = value[0];
88 getAccess<ScalarType>()[1] = value[1];
89 getAccess<ScalarType>()[2] = value[2];
90 getAccess<ScalarType>()[3] = value[3];
91 return *this;
92 }
93
94 template<typename ScalarType>
get(void) const95 inline tcu::Vector<ScalarType, 4> get (void) const
96 {
97 return tcu::Vector<ScalarType, 4>(
98 getAccess<ScalarType>()[0],
99 getAccess<ScalarType>()[1],
100 getAccess<ScalarType>()[2],
101 getAccess<ScalarType>()[3]);
102 }
103
104 template<typename ScalarType>
105 inline ScalarType* getAccess ();
106
107 template<typename ScalarType>
108 inline const ScalarType* getAccess () const;
109 } DE_WARN_UNUSED_TYPE;
110
111 template<>
getAccess()112 inline float* GenericVec4::getAccess<float> ()
113 {
114 return v.fData;
115 }
116
117 template<>
getAccess() const118 inline const float* GenericVec4::getAccess<float> () const
119 {
120 return v.fData;
121 }
122
123 template<>
getAccess()124 inline deUint32* GenericVec4::getAccess<deUint32> ()
125 {
126 return v.uData;
127 }
128
129 template<>
getAccess() const130 inline const deUint32* GenericVec4::getAccess<deUint32> () const
131 {
132 return v.uData;
133 }
134
135 template<>
getAccess()136 inline deInt32* GenericVec4::getAccess<deInt32> ()
137 {
138 return v.iData;
139 }
140
141 template<>
getAccess() const142 inline const deInt32* GenericVec4::getAccess<deInt32> () const
143 {
144 return v.iData;
145 }
146
147 } // rr
148
149 #endif // _RRGENERICVECTOR_HPP
150