1 /*
2 * Copyright 2014 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 "RecordTestUtils.h"
9 #include "SkBitmap.h"
10 #include "SkImageInfo.h"
11 #include "SkRecord.h"
12 #include "SkRecords.h"
13 #include "SkShader.h"
14 #include "Test.h"
15
16
17 // Sums the area of any DrawRect command it sees.
18 class AreaSummer {
19 public:
AreaSummer()20 AreaSummer() : fArea(0) {}
21
operator ()(const T &)22 template <typename T> void operator()(const T&) { }
23
operator ()(const SkRecords::DrawRect & draw)24 void operator()(const SkRecords::DrawRect& draw) {
25 fArea += (int)(draw.rect.width() * draw.rect.height());
26 }
27
area() const28 int area() const { return fArea; }
29
apply(const SkRecord & record)30 void apply(const SkRecord& record) {
31 for (int i = 0; i < record.count(); i++) {
32 record.visit<void>(i, *this);
33 }
34 }
35
36 private:
37 int fArea;
38 };
39
40 // Scales out the bottom-right corner of any DrawRect command it sees by 2x.
41 struct Stretch {
operator ()Stretch42 template <typename T> void operator()(T*) {}
operator ()Stretch43 void operator()(SkRecords::DrawRect* draw) {
44 draw->rect.fRight *= 2;
45 draw->rect.fBottom *= 2;
46 }
47
applyStretch48 void apply(SkRecord* record) {
49 for (int i = 0; i < record->count(); i++) {
50 record->mutate<void>(i, *this);
51 }
52 }
53 };
54
55 #define APPEND(record, type, ...) new (record.append<type>()) type{__VA_ARGS__}
56
57 // Basic tests for the low-level SkRecord code.
DEF_TEST(Record,r)58 DEF_TEST(Record, r) {
59 SkRecord record;
60
61 // Add a simple DrawRect command.
62 SkRect rect = SkRect::MakeWH(10, 10);
63 SkPaint paint;
64 APPEND(record, SkRecords::DrawRect, paint, rect);
65
66 // Its area should be 100.
67 AreaSummer summer;
68 summer.apply(record);
69 REPORTER_ASSERT(r, summer.area() == 100);
70
71 // Scale 2x.
72 Stretch stretch;
73 stretch.apply(&record);
74
75 // Now its area should be 100 + 400.
76 summer.apply(record);
77 REPORTER_ASSERT(r, summer.area() == 500);
78 }
79
DEF_TEST(Record_defrag,r)80 DEF_TEST(Record_defrag, r) {
81 SkRecord record;
82 APPEND(record, SkRecords::Save);
83 APPEND(record, SkRecords::ClipRect);
84 APPEND(record, SkRecords::NoOp);
85 APPEND(record, SkRecords::DrawRect);
86 APPEND(record, SkRecords::NoOp);
87 APPEND(record, SkRecords::NoOp);
88 APPEND(record, SkRecords::Restore);
89 REPORTER_ASSERT(r, record.count() == 7);
90
91 record.defrag();
92 REPORTER_ASSERT(r, record.count() == 4);
93 assert_type<SkRecords::Save >(r, record, 0);
94 assert_type<SkRecords::ClipRect>(r, record, 1);
95 assert_type<SkRecords::DrawRect>(r, record, 2);
96 assert_type<SkRecords::Restore >(r, record, 3);
97 }
98
99 #undef APPEND
100
101 template <typename T>
is_aligned(const T * p)102 static bool is_aligned(const T* p) {
103 return (((uintptr_t)p) & (sizeof(T) - 1)) == 0;
104 }
105
DEF_TEST(Record_Alignment,r)106 DEF_TEST(Record_Alignment, r) {
107 SkRecord record;
108 REPORTER_ASSERT(r, is_aligned(record.alloc<uint8_t>()));
109 REPORTER_ASSERT(r, is_aligned(record.alloc<uint16_t>()));
110 REPORTER_ASSERT(r, is_aligned(record.alloc<uint32_t>()));
111 REPORTER_ASSERT(r, is_aligned(record.alloc<void*>()));
112
113 // It's not clear if we care that 8-byte values are aligned on 32-bit machines.
114 if (sizeof(void*) == 8) {
115 REPORTER_ASSERT(r, is_aligned(record.alloc<double>()));
116 REPORTER_ASSERT(r, is_aligned(record.alloc<uint64_t>()));
117 }
118 }
119
120