1 /*
2 * Copyright 2018 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 // GM to stress TextBlob regeneration and the GPU font cache
9 // It's not necessary to run this with CPU configs
10 //
11 // The point here is to draw a set of text that will fit in one Plot, and then some large
12 // text. After a flush we draw the first set of text again with a slightly different color,
13 // and then enough new large text to spill the entire atlas. What *should* happen is that
14 // the Plot with the first set of text will not get overwritten by the new large text.
15
16 #include "gm/gm.h"
17 #include "include/core/SkCanvas.h"
18 #include "include/core/SkColor.h"
19 #include "include/core/SkFont.h"
20 #include "include/core/SkFontMgr.h"
21 #include "include/core/SkFontStyle.h"
22 #include "include/core/SkFontTypes.h"
23 #include "include/core/SkPaint.h"
24 #include "include/core/SkRefCnt.h"
25 #include "include/core/SkScalar.h"
26 #include "include/core/SkSize.h"
27 #include "include/core/SkString.h"
28 #include "include/core/SkTextBlob.h"
29 #include "include/core/SkTypeface.h"
30 #include "include/core/SkTypes.h"
31 #include "include/gpu/GrContextOptions.h"
32 #include "include/gpu/GrDirectContext.h"
33 #include "include/gpu/GrRecordingContext.h"
34 #include "include/private/GrTypesPriv.h"
35 #include "include/private/SkTemplates.h"
36 #include "src/gpu/GrDirectContextPriv.h"
37 #include "tools/ToolUtils.h"
38
39 class GrRenderTargetContext;
40
make_blob(const SkString & text,const SkFont & font)41 static sk_sp<SkTextBlob> make_blob(const SkString& text, const SkFont& font) {
42 size_t len = text.size();
43 SkAutoTArray<SkScalar> pos(len);
44 SkAutoTArray<SkGlyphID> glyphs(len);
45
46 font.textToGlyphs(text.c_str(), len, SkTextEncoding::kUTF8, glyphs.get(), len);
47 font.getXPos(glyphs.get(), len, pos.get());
48 return SkTextBlob::MakeFromPosTextH(text.c_str(), len, pos.get(), 0, font);
49 }
50
51 class FontRegenGM : public skiagm::GpuGM {
52
modifyGrContextOptions(GrContextOptions * options)53 void modifyGrContextOptions(GrContextOptions* options) override {
54 options->fGlyphCacheTextureMaximumBytes = 0;
55 options->fAllowMultipleGlyphCacheTextures = GrContextOptions::Enable::kNo;
56 }
57
onShortName()58 SkString onShortName() override { return SkString("fontregen"); }
59
onISize()60 SkISize onISize() override { return {kSize, kSize}; }
61
onOnceBeforeDraw()62 void onOnceBeforeDraw() override {
63 this->setBGColor(SK_ColorLTGRAY);
64
65 auto tf = ToolUtils::create_portable_typeface("sans-serif", SkFontStyle::Normal());
66
67 static const SkString kTexts[] = {
68 SkString("abcdefghijklmnopqrstuvwxyz"),
69 SkString("ABCDEFGHI"),
70 SkString("NOPQRSTUV")
71 };
72
73 SkFont font;
74 font.setEdging(SkFont::Edging::kAntiAlias);
75 font.setSubpixel(false);
76 font.setSize(80);
77 font.setTypeface(tf);
78
79 fBlobs[0] = make_blob(kTexts[0], font);
80 font.setSize(162);
81 fBlobs[1] = make_blob(kTexts[1], font);
82 fBlobs[2] = make_blob(kTexts[2], font);
83 }
84
onDraw(GrRecordingContext * context,GrRenderTargetContext *,SkCanvas * canvas)85 void onDraw(GrRecordingContext* context, GrRenderTargetContext*, SkCanvas* canvas) override {
86 auto direct = context->asDirectContext();
87 if (!direct) {
88 return;
89 }
90
91 SkPaint paint;
92 paint.setColor(SK_ColorBLACK);
93 canvas->drawTextBlob(fBlobs[0], 10, 80, paint);
94 canvas->drawTextBlob(fBlobs[1], 10, 225, paint);
95 direct->flushAndSubmit();
96
97 paint.setColor(0xFF010101);
98 canvas->drawTextBlob(fBlobs[0], 10, 305, paint);
99 canvas->drawTextBlob(fBlobs[2], 10, 465, paint);
100
101 // Debugging tool for GPU.
102 static const bool kShowAtlas = false;
103 if (kShowAtlas) {
104 auto img = direct->priv().testingOnly_getFontAtlasImage(kA8_GrMaskFormat);
105 canvas->drawImage(img, 200, 0);
106 }
107 }
108
109 private:
110 static constexpr int kSize = 512;
111
112 sk_sp<SkTextBlob> fBlobs[3];
113 using INHERITED = GM;
114 };
115
116 //////////////////////////////////////////////////////////////////////////////
117
118 DEF_GM(return new FontRegenGM())
119
120 ///////////////////////////////////////////////////////////////////////////////
121
122 class BadAppleGM : public skiagm::GpuGM {
123
onShortName()124 SkString onShortName() override { return SkString("badapple"); }
125
onISize()126 SkISize onISize() override { return {kSize, kSize}; }
127
onOnceBeforeDraw()128 void onOnceBeforeDraw() override {
129 this->setBGColor(SK_ColorWHITE);
130 auto fm = SkFontMgr::RefDefault();
131
132 static const SkString kTexts[] = {
133 SkString("Meet"),
134 SkString("iPad Pro"),
135 };
136
137 SkFont font;
138 font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
139 font.setSubpixel(true);
140 font.setSize(256);
141
142 fBlobs[0] = make_blob(kTexts[0], font);
143 fBlobs[1] = make_blob(kTexts[1], font);
144 }
145
onDraw(GrRecordingContext * context,GrRenderTargetContext *,SkCanvas * canvas)146 void onDraw(GrRecordingContext* context, GrRenderTargetContext*, SkCanvas* canvas) override {
147 SkPaint paint;
148 paint.setColor(0xFF111111);
149 canvas->drawTextBlob(fBlobs[0], 10, 260, paint);
150 canvas->drawTextBlob(fBlobs[1], 10, 500, paint);
151 }
152
153 private:
154 static constexpr int kSize = 512;
155
156 sk_sp<SkTextBlob> fBlobs[3];
157 using INHERITED = GM;
158 };
159
160 //////////////////////////////////////////////////////////////////////////////
161
162 DEF_GM(return new BadAppleGM())
163