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 "Test.h"
9
10 #include "SkBitmap.h"
11 #include "SkImageInfo.h"
12 #include "SkShader.h"
13 #include "SkRecord.h"
14 #include "SkRecords.h"
15
16 // Sums the area of any DrawRect command it sees.
17 class AreaSummer {
18 public:
AreaSummer()19 AreaSummer() : fArea(0) {}
20
operator ()(const T &)21 template <typename T> void operator()(const T&) { }
22
operator ()(const SkRecords::DrawRect & draw)23 void operator()(const SkRecords::DrawRect& draw) {
24 fArea += (int)(draw.rect.width() * draw.rect.height());
25 }
26
area() const27 int area() const { return fArea; }
28
apply(const SkRecord & record)29 void apply(const SkRecord& record) {
30 for (unsigned i = 0; i < record.count(); i++) {
31 record.visit<void>(i, *this);
32 }
33 }
34
35 private:
36 int fArea;
37 };
38
39 // Scales out the bottom-right corner of any DrawRect command it sees by 2x.
40 struct Stretch {
operator ()Stretch41 template <typename T> void operator()(T*) {}
operator ()Stretch42 void operator()(SkRecords::DrawRect* draw) {
43 draw->rect.fRight *= 2;
44 draw->rect.fBottom *= 2;
45 }
46
applyStretch47 void apply(SkRecord* record) {
48 for (unsigned i = 0; i < record->count(); i++) {
49 record->mutate<void>(i, *this);
50 }
51 }
52 };
53
54 #define APPEND(record, type, ...) SkNEW_PLACEMENT_ARGS(record.append<type>(), type, (__VA_ARGS__))
55
56 // Basic tests for the low-level SkRecord code.
DEF_TEST(Record,r)57 DEF_TEST(Record, r) {
58 SkRecord record;
59
60 // Add a simple DrawRect command.
61 SkRect rect = SkRect::MakeWH(10, 10);
62 SkPaint paint;
63 APPEND(record, SkRecords::DrawRect, paint, rect);
64
65 // Its area should be 100.
66 AreaSummer summer;
67 summer.apply(record);
68 REPORTER_ASSERT(r, summer.area() == 100);
69
70 // Scale 2x.
71 Stretch stretch;
72 stretch.apply(&record);
73
74 // Now its area should be 100 + 400.
75 summer.apply(record);
76 REPORTER_ASSERT(r, summer.area() == 500);
77 }
78
79 #undef APPEND
80
81 template <typename T>
is_aligned(const T * p)82 static bool is_aligned(const T* p) {
83 return (((uintptr_t)p) & (sizeof(T) - 1)) == 0;
84 }
85
DEF_TEST(Record_Alignment,r)86 DEF_TEST(Record_Alignment, r) {
87 SkRecord record;
88 REPORTER_ASSERT(r, is_aligned(record.alloc<uint8_t>()));
89 REPORTER_ASSERT(r, is_aligned(record.alloc<uint16_t>()));
90 REPORTER_ASSERT(r, is_aligned(record.alloc<uint32_t>()));
91 REPORTER_ASSERT(r, is_aligned(record.alloc<void*>()));
92
93 // It's not clear if we care that 8-byte values are aligned on 32-bit machines.
94 if (sizeof(void*) == 8) {
95 REPORTER_ASSERT(r, is_aligned(record.alloc<double>()));
96 REPORTER_ASSERT(r, is_aligned(record.alloc<uint64_t>()));
97 }
98 }
99
100