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SkRasterPipelineOptsTest.cpp
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1/*
2 * Copyright 2022 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "src/core/SkOpts.h"
9#include "tests/Test.h"
10
11#include <algorithm>
12#include <array>
13#include <cstddef>
14
15#define SK_OPTS_NS RPOptsTest
16
17#if defined(__clang__)
18#pragma clang diagnostic push
19#pragma clang diagnostic ignored "-Wunused-function"
20#elif defined(__GNUC__)
21#pragma GCC diagnostic push
22#pragma GCC diagnostic ignored "-Wunused-function"
23#pragma GCC diagnostic ignored "-Wunused-variable"
24#endif
25
27
28#if defined(__clang__)
29#pragma clang diagnostic pop
30#elif defined(__GNUC__)
31#pragma GCC diagnostic pop
32#endif
33
34constexpr auto F_ = SK_OPTS_NS::F_;
37
38template <size_t N>
39static std::array<int32_t, N> make_masks(int bits) {
40 // Make an array of masks that correspond to the bit pattern of `bits`.
41 std::array<int32_t, N> masks;
42 for (size_t idx = 0; idx < N; ++idx) {
43 masks[idx] = (bits & 1) ? ~0 : 0;
44 bits >>= 1;
45 }
46 SkASSERT(!bits);
47 return masks;
48}
49
50DEF_TEST(SkRasterPipelineOpts_Any, r) {
51 static constexpr size_t N = sizeof(I32) / sizeof(int32_t);
52
53 for (int value = 0; value < (1 << N); ++value) {
54 // Load masks corresponding to the bit-pattern of `value` into lanes of `i`.
55 std::array<int32_t, N> masks = make_masks<N>(value);
56 I32 i = sk_unaligned_load<I32>(masks.data());
57
58 // Verify that the raster pipeline any() matches expectations.
59 REPORTER_ASSERT(r, SK_OPTS_NS::any(i) == std::any_of(masks.begin(), masks.end(),
60 [](int32_t m) { return m != 0; }));
61 }
62}
63
64DEF_TEST(SkRasterPipelineOpts_All, r) {
65 static constexpr size_t N = sizeof(I32) / sizeof(int32_t);
66
67 for (int value = 0; value < (1 << N); ++value) {
68 // Load masks corresponding to the bit-pattern of `value` into lanes of `i`.
69 std::array<int32_t, N> masks = make_masks<N>(value);
70 I32 i = sk_unaligned_load<I32>(masks.data());
71
72 // Verify that the raster pipeline all() matches expectations.
73 REPORTER_ASSERT(r, SK_OPTS_NS::all(i) == std::all_of(masks.begin(), masks.end(),
74 [](int32_t m) { return m != 0; }));
75 }
76}
77
78DEF_TEST(SkRasterPipelineOpts_Sin, r) {
79 constexpr float Pi = SK_ScalarPI;
80 constexpr float kTolerance = 0.000875f;
81 for (float rad = -5*Pi; rad <= 5*Pi; rad += 0.1f) {
83 F expected = F_(std::sin(rad));
84 F delta = SK_OPTS_NS::abs_(expected - result);
85
87 }
88}
89
90DEF_TEST(SkRasterPipelineOpts_Cos, r) {
91 constexpr float Pi = SK_ScalarPI;
92 constexpr float kTolerance = 0.000875f;
93 for (float rad = -5*Pi; rad <= 5*Pi; rad += 0.1f) {
95 F expected = F_(std::cos(rad));
96 F delta = SK_OPTS_NS::abs_(expected - result);
97
99 }
100}
101
102DEF_TEST(SkRasterPipelineOpts_Tan, r) {
103 // Our tangent diverges more as we get near infinities (x near +- Pi/2),
104 // so we bring in the domain a little.
105 constexpr float Pi = SK_ScalarPI;
106 constexpr float kEpsilon = 0.16f;
107 constexpr float kTolerance = 0.00175f;
108
109 // Test against various multiples of Pi, to check our periodicity
110 for (float period : {0.0f, -3*Pi, 3*Pi}) {
111 for (float rad = -Pi/2 + kEpsilon; rad <= Pi/2 - kEpsilon; rad += 0.01f) {
112 F result = SK_OPTS_NS::tan_(F_(rad + period));
113 F expected = F_(std::tan(rad));
114 F delta = SK_OPTS_NS::abs_(expected - result);
115
117 }
118 }
119}
120
121DEF_TEST(SkRasterPipelineOpts_Asin, r) {
122 constexpr float kTolerance = 0.00175f;
123 for (float x = -1; x <= 1; x += 1.0f/64) {
125 F expected = F_(asinf(x));
126 F delta = SK_OPTS_NS::abs_(expected - result);
127
129 }
130}
131
132DEF_TEST(SkRasterPipelineOpts_Acos, r) {
133 constexpr float kTolerance = 0.00175f;
134 for (float x = -1; x <= 1; x += 1.0f/64) {
136 F expected = F_(acosf(x));
137 F delta = SK_OPTS_NS::abs_(expected - result);
138
140 }
141}
142
143DEF_TEST(SkRasterPipelineOpts_Atan, r) {
144 constexpr float kTolerance = 0.00175f;
145 for (float x = -10.0f; x <= 10.0f; x += 0.1f) {
147 F expected = F_(atanf(x));
148 F delta = SK_OPTS_NS::abs_(expected - result);
149
151 }
152}
153
154DEF_TEST(SkRasterPipelineOpts_Atan2, r) {
155 constexpr float kTolerance = 0.00175f;
156 for (float y = -3.0f; y <= 3.0f; y += 0.1f) {
157 for (float x = -3.0f; x <= 3.0f; x += 0.1f) {
159 F expected = F_(std::atan2(y, x));
160 F delta = SK_OPTS_NS::abs_(expected - result);
161
163 }
164 }
165}
166
167DEF_TEST(SkRasterPipelineOpts_Log2, r) {
168 constexpr float kTolerance = 0.001f;
169 for (float value : {0.25f, 0.5f, 1.0f, 2.0f, 4.0f, 8.0f}) {
171 F expected = F_(std::log2(value));
172 F delta = SK_OPTS_NS::abs_(expected - result);
173
175 }
176}
177
178DEF_TEST(SkRasterPipelineOpts_Pow2, r) {
179 constexpr float kTolerance = 0.001f;
180 for (float value : {-80, -5, -2, -1, 0, 1, 2, 3, 5}) {
182 F expected = F_(std::pow(2.0, value));
183 F delta = SK_OPTS_NS::abs_(expected - result);
184
186 }
187
189 REPORTER_ASSERT(r, SK_OPTS_NS::all(result == INFINITY));
190}
static constexpr float kTolerance
Definition: GrQuadUtils.cpp:29
#define SkASSERT(cond)
Definition: SkAssert.h:116
static constexpr double kEpsilon
DEF_TEST(SkRasterPipelineOpts_Any, r)
static std::array< int32_t, N > make_masks(int bits)
SK_OPTS_NS::I32 I32
constexpr auto F_
#define SK_ScalarPI
Definition: SkScalar.h:21
#define REPORTER_ASSERT(r, cond,...)
Definition: Test.h:286
V< int32_t > I32
Definition: Transform_inl.h:15
#define N
Definition: beziers.cpp:19
uint8_t value
GAsyncResult * result
double y
double x
SI bool all(I32 c)
SI F atan2_(F y0, F x0)
SI constexpr F F_(float x)
SI bool any(I32 c)
Definition: SkMD5.cpp:120