1 /*
2 * Copyright 2015 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 "sk_tool_utils.h"
9
10 #include "SkCanvas.h"
11 #include "SkPaint.h"
12 #include "SkPoint.h"
13 #include "SkTextBlob.h"
14 #include "SkFontMgr.h"
15 #include "SkGraphics.h"
16 #include "SkSurface.h"
17 #include "SkTypeface.h"
18 #include "../src/fonts/SkRandomScalerContext.h"
19
20 #ifdef SK_BUILD_FOR_WIN
21 #include "SkTypeface_win.h"
22 #endif
23
24 #include "Test.h"
25
26 #if SK_SUPPORT_GPU
27 #include "GrContext.h"
28 #include "GrTest.h"
29
30 struct TextBlobWrapper {
31 // This class assumes it 'owns' the textblob it wraps, and thus does not need to take a ref
TextBlobWrapperTextBlobWrapper32 explicit TextBlobWrapper(const SkTextBlob* blob) : fBlob(blob) {}
TextBlobWrapperTextBlobWrapper33 TextBlobWrapper(const TextBlobWrapper& blob) : fBlob(SkRef(blob.fBlob.get())) {}
34
35 SkAutoTUnref<const SkTextBlob> fBlob;
36 };
37
draw(SkCanvas * canvas,int redraw,const SkTArray<TextBlobWrapper> & blobs)38 static void draw(SkCanvas* canvas, int redraw, const SkTArray<TextBlobWrapper>& blobs) {
39 int yOffset = 0;
40 for (int r = 0; r < redraw; r++) {
41 for (int i = 0; i < blobs.count(); i++) {
42 const SkTextBlob* blob = blobs[i].fBlob.get();
43 const SkRect& bounds = blob->bounds();
44 yOffset += SkScalarCeilToInt(bounds.height());
45 SkPaint paint;
46 canvas->drawTextBlob(blob, 0, SkIntToScalar(yOffset), paint);
47 }
48 }
49 }
50
51 static const int kWidth = 1024;
52 static const int kHeight = 768;
53
54 // This test hammers the GPU textblobcache and font atlas
text_blob_cache_inner(skiatest::Reporter * reporter,GrContext * context,int maxTotalText,int maxGlyphID,int maxFamilies,bool normal,bool stressTest)55 static void text_blob_cache_inner(skiatest::Reporter* reporter, GrContext* context,
56 int maxTotalText, int maxGlyphID, int maxFamilies, bool normal,
57 bool stressTest) {
58 // setup surface
59 uint32_t flags = 0;
60 SkSurfaceProps props(flags, SkSurfaceProps::kLegacyFontHost_InitType);
61
62 // configure our context for maximum stressing of cache and atlas
63 if (stressTest) {
64 GrTest::SetupAlwaysEvictAtlas(context);
65 context->setTextBlobCacheLimit_ForTesting(0);
66 }
67
68 SkImageInfo info = SkImageInfo::Make(kWidth, kHeight, kN32_SkColorType, kPremul_SkAlphaType);
69 SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTarget(context, SkBudgeted::kNo, info,
70 0, &props));
71 REPORTER_ASSERT(reporter, surface);
72 if (!surface) {
73 return;
74 }
75
76 SkCanvas* canvas = surface->getCanvas();
77
78 SkAutoTUnref<SkFontMgr> fm(SkFontMgr::RefDefault());
79
80 int count = SkMin32(fm->countFamilies(), maxFamilies);
81
82 // make a ton of text
83 SkAutoTArray<uint16_t> text(maxTotalText);
84 for (int i = 0; i < maxTotalText; i++) {
85 text[i] = i % maxGlyphID;
86 }
87
88 // generate textblobs
89 SkTArray<TextBlobWrapper> blobs;
90 for (int i = 0; i < count; i++) {
91 SkPaint paint;
92 paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
93 paint.setTextSize(48); // draw big glyphs to really stress the atlas
94
95 SkString familyName;
96 fm->getFamilyName(i, &familyName);
97 SkAutoTUnref<SkFontStyleSet> set(fm->createStyleSet(i));
98 for (int j = 0; j < set->count(); ++j) {
99 SkFontStyle fs;
100 set->getStyle(j, &fs, nullptr);
101
102 // We use a typeface which randomy returns unexpected mask formats to fuzz
103 SkAutoTUnref<SkTypeface> orig(set->createTypeface(j));
104 if (normal) {
105 paint.setTypeface(orig);
106 } else {
107 SkAutoTUnref<SkTypeface> typeface(new SkRandomTypeface(orig, paint, true));
108 paint.setTypeface(typeface);
109 }
110
111 SkTextBlobBuilder builder;
112 for (int aa = 0; aa < 2; aa++) {
113 for (int subpixel = 0; subpixel < 2; subpixel++) {
114 for (int lcd = 0; lcd < 2; lcd++) {
115 paint.setAntiAlias(SkToBool(aa));
116 paint.setSubpixelText(SkToBool(subpixel));
117 paint.setLCDRenderText(SkToBool(lcd));
118 if (!SkToBool(lcd)) {
119 paint.setTextSize(160);
120 }
121 const SkTextBlobBuilder::RunBuffer& run = builder.allocRun(paint,
122 maxTotalText,
123 0, 0,
124 nullptr);
125 memcpy(run.glyphs, text.get(), maxTotalText * sizeof(uint16_t));
126 }
127 }
128 }
129 blobs.emplace_back(builder.build());
130 }
131 }
132
133 // create surface where LCD is impossible
134 info = SkImageInfo::MakeN32Premul(kWidth, kHeight);
135 SkSurfaceProps propsNoLCD(0, kUnknown_SkPixelGeometry);
136 SkAutoTUnref<SkSurface> surfaceNoLCD(canvas->newSurface(info, &propsNoLCD));
137 REPORTER_ASSERT(reporter, surface);
138 if (!surface) {
139 return;
140 }
141
142 SkCanvas* canvasNoLCD = surfaceNoLCD->getCanvas();
143
144 // test redraw
145 draw(canvas, 2, blobs);
146 draw(canvasNoLCD, 2, blobs);
147
148 // test draw after free
149 context->freeGpuResources();
150 draw(canvas, 1, blobs);
151
152 context->freeGpuResources();
153 draw(canvasNoLCD, 1, blobs);
154
155 // test draw after abandon
156 context->abandonContext();
157 draw(canvas, 1, blobs);
158 }
159
DEF_GPUTEST_FOR_NULL_CONTEXT(TextBlobCache,reporter,context)160 DEF_GPUTEST_FOR_NULL_CONTEXT(TextBlobCache, reporter, context) {
161 text_blob_cache_inner(reporter, context, 1024, 256, 30, true, false);
162 }
163
DEF_GPUTEST_FOR_NULL_CONTEXT(TextBlobStressCache,reporter,context)164 DEF_GPUTEST_FOR_NULL_CONTEXT(TextBlobStressCache, reporter, context) {
165 text_blob_cache_inner(reporter, context, 256, 256, 10, true, true);
166 }
167
DEF_GPUTEST_FOR_NULL_CONTEXT(TextBlobAbnormal,reporter,context)168 DEF_GPUTEST_FOR_NULL_CONTEXT(TextBlobAbnormal, reporter, context) {
169 text_blob_cache_inner(reporter, context, 256, 256, 10, false, false);
170 }
171
DEF_GPUTEST_FOR_NULL_CONTEXT(TextBlobStressAbnormal,reporter,context)172 DEF_GPUTEST_FOR_NULL_CONTEXT(TextBlobStressAbnormal, reporter, context) {
173 text_blob_cache_inner(reporter, context, 256, 256, 10, false, true);
174 }
175 #endif
176