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
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>(
106 getAccess<ScalarType>()[0],
107 getAccess<ScalarType>()[1],
108 getAccess<ScalarType>()[2],
109 getAccess<ScalarType>()[3]);
110 }
111
112 template<typename ScalarType>
113 inline ScalarType* getAccess ();
114
115 template<typename ScalarType>
116 inline const ScalarType* getAccess () const;
117 } DE_WARN_UNUSED_TYPE;
118
119 template<>
getAccess()120 inline float* GenericVec4::getAccess<float> ()
121 {
122 return v.fData;
123 }
124
125 template<>
getAccess() const126 inline const float* GenericVec4::getAccess<float> () const
127 {
128 return v.fData;
129 }
130
131 template<>
getAccess()132 inline deUint32* GenericVec4::getAccess<deUint32> ()
133 {
134 return v.uData;
135 }
136
137 template<>
getAccess() const138 inline const deUint32* GenericVec4::getAccess<deUint32> () const
139 {
140 return v.uData;
141 }
142
143 template<>
getAccess()144 inline deInt32* GenericVec4::getAccess<deInt32> ()
145 {
146 return v.iData;
147 }
148
149 template<>
getAccess() const150 inline const deInt32* GenericVec4::getAccess<deInt32> () const
151 {
152 return v.iData;
153 }
154
155 } // rr
156
157 #endif // _RRGENERICVECTOR_HPP
158