1 #ifndef _TCUTEXVERIFIERUTIL_HPP
2 #define _TCUTEXVERIFIERUTIL_HPP
3 /*-------------------------------------------------------------------------
4 * drawElements Quality Program Tester Core
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 Internal utilities shared between TexLookup and TexCompare verifiers.
24 *//*--------------------------------------------------------------------*/
25
26 #include "tcuDefs.hpp"
27 #include "tcuTexture.hpp"
28
29 namespace tcu
30 {
31 namespace TexVerifierUtil
32 {
33
34 // Error bound utilities
35
36 float computeFloatingPointError (const float value, const int numAccurateBits);
37 float computeFixedPointError (const int numAccurateBits);
38 float computeColorBitsError (const int bits, const int numAccurateBits);
39
40 template<int Size>
computeFloatingPointError(const Vector<float,Size> & value,const Vector<deInt32,Size> & numAccurateBits)41 inline Vector<float, Size> computeFloatingPointError (const Vector<float, Size>& value, const Vector<deInt32, Size>& numAccurateBits)
42 {
43 Vector<float, Size> res;
44 for (int ndx = 0; ndx < Size; ndx++)
45 res[ndx] = computeFloatingPointError(value[ndx], numAccurateBits[ndx]);
46 return res;
47 }
48
49 template<int Size>
computeFixedPointError(const Vector<deInt32,Size> & numAccurateBits)50 inline Vector<float, Size> computeFixedPointError (const Vector<deInt32, Size>& numAccurateBits)
51 {
52 Vector<float, Size> res;
53 for (int ndx = 0; ndx < Size; ndx++)
54 res[ndx] = computeFixedPointError(numAccurateBits[ndx]);
55 return res;
56 }
57
58 template<int Size>
computeColorBitsError(const Vector<deInt32,Size> & bits,const Vector<deInt32,Size> & numAccurateBits)59 inline Vector<float, Size> computeColorBitsError(const Vector<deInt32, Size>& bits, const Vector<deInt32, Size>& numAccurateBits)
60 {
61 Vector<float, Size> res;
62 for (int ndx = 0; ndx < Size; ndx++)
63 res[ndx] = computeColorBitsError(bits[ndx], numAccurateBits[ndx]);
64 return res;
65 }
66
67 // Sampler introspection
68
isNearestMipmapFilter(const Sampler::FilterMode mode)69 inline bool isNearestMipmapFilter(const Sampler::FilterMode mode)
70 {
71 return mode == Sampler::NEAREST_MIPMAP_NEAREST || mode == Sampler::LINEAR_MIPMAP_NEAREST || mode == Sampler::CUBIC_MIPMAP_NEAREST;
72 }
73
isLinearMipmapFilter(const Sampler::FilterMode mode)74 inline bool isLinearMipmapFilter(const Sampler::FilterMode mode)
75 {
76 return mode == Sampler::NEAREST_MIPMAP_LINEAR || mode == Sampler::LINEAR_MIPMAP_LINEAR || mode == Sampler::CUBIC_MIPMAP_LINEAR;
77 }
78
isMipmapFilter(const Sampler::FilterMode mode)79 inline bool isMipmapFilter(const Sampler::FilterMode mode)
80 {
81 return isNearestMipmapFilter(mode) || isLinearMipmapFilter(mode);
82 }
83
isNearestFilter(const Sampler::FilterMode mode)84 inline bool isNearestFilter(const Sampler::FilterMode mode)
85 {
86 return mode == Sampler::NEAREST || mode == Sampler::NEAREST_MIPMAP_NEAREST || mode == Sampler::NEAREST_MIPMAP_LINEAR;
87 }
88
isLinearFilter(const Sampler::FilterMode mode)89 inline bool isLinearFilter(const Sampler::FilterMode mode)
90 {
91 return mode == Sampler::LINEAR || mode == Sampler::LINEAR_MIPMAP_NEAREST || mode == Sampler::LINEAR_MIPMAP_LINEAR;
92 }
93
isCubicFilter(const Sampler::FilterMode mode)94 inline bool isCubicFilter(const Sampler::FilterMode mode)
95 {
96 return mode == Sampler::CUBIC || mode == Sampler::CUBIC_MIPMAP_NEAREST || mode == Sampler::CUBIC_MIPMAP_LINEAR;
97 }
98
getLevelFilter(const Sampler::FilterMode mode)99 inline Sampler::FilterMode getLevelFilter(const Sampler::FilterMode mode)
100 {
101 if (isNearestFilter(mode))
102 return Sampler::NEAREST;
103 if (isLinearFilter(mode))
104 return Sampler::LINEAR;
105 return Sampler::CUBIC;
106 }
107
isWrapModeSupported(const Sampler::WrapMode mode)108 inline bool isWrapModeSupported (const Sampler::WrapMode mode)
109 {
110 return mode != Sampler::MIRRORED_REPEAT_CL && mode != Sampler::REPEAT_CL;
111 }
112
113 // Misc utilities
114
115 Vec2 computeNonNormalizedCoordBounds (const bool normalizedCoords, const int dim, const float coord, const int coordBits, const int uvBits);
116 void getPossibleCubeFaces (const Vec3& coord, const IVec3& bits, CubeFace* faces, int& numFaces);
117
118 Sampler getUnnormalizedCoordSampler (const Sampler& sampler);
119 int wrap (Sampler::WrapMode mode, int c, int size);
120
121 } // TexVerifierUtil
122 } // tcu
123
124 #endif // _TCUTEXVERIFIERUTIL_HPP
125