1 /*
2 * Copyright 2011 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 "gm/gm.h"
9 #include "include/core/SkBitmap.h"
10 #include "include/core/SkCanvas.h"
11 #include "include/core/SkColor.h"
12 #include "include/core/SkFilterQuality.h"
13 #include "include/core/SkFont.h"
14 #include "include/core/SkImageInfo.h"
15 #include "include/core/SkPaint.h"
16 #include "include/core/SkPoint.h"
17 #include "include/core/SkRect.h"
18 #include "include/core/SkRefCnt.h"
19 #include "include/core/SkScalar.h"
20 #include "include/core/SkShader.h"
21 #include "include/core/SkSize.h"
22 #include "include/core/SkString.h"
23 #include "include/core/SkTileMode.h"
24 #include "include/core/SkTypeface.h"
25 #include "include/core/SkTypes.h"
26 #include "include/effects/SkGradientShader.h"
27 #include "include/utils/SkTextUtils.h"
28 #include "tools/ToolUtils.h"
29
makebm(SkBitmap * bm,SkColorType ct,int w,int h)30 static void makebm(SkBitmap* bm, SkColorType ct, int w, int h) {
31 bm->allocPixels(SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType));
32 bm->eraseColor(SK_ColorTRANSPARENT);
33
34 SkCanvas canvas(*bm);
35 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} };
36 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
37 SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
38 SkPaint paint;
39
40 paint.setDither(true);
41 paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos,
42 SK_ARRAY_COUNT(colors), SkTileMode::kClamp));
43 canvas.drawPaint(paint);
44 }
45
setup(SkPaint * paint,const SkBitmap & bm,SkFilterQuality filter_level,SkTileMode tmx,SkTileMode tmy)46 static void setup(SkPaint* paint, const SkBitmap& bm, SkFilterQuality filter_level,
47 SkTileMode tmx, SkTileMode tmy) {
48 paint->setShader(bm.makeShader(tmx, tmy));
49 paint->setFilterQuality(filter_level);
50 }
51
52 constexpr SkColorType gColorTypes[] = {
53 kN32_SkColorType,
54 kRGB_565_SkColorType,
55 };
56
57 class ScaledTilingGM : public skiagm::GM {
58 public:
ScaledTilingGM(bool powerOfTwoSize)59 ScaledTilingGM(bool powerOfTwoSize)
60 : fPowerOfTwoSize(powerOfTwoSize) {
61 }
62
63 SkBitmap fTexture[SK_ARRAY_COUNT(gColorTypes)];
64
65 protected:
66 enum {
67 kPOTSize = 4,
68 kNPOTSize = 3,
69 };
70
onShortName()71 SkString onShortName() override {
72 SkString name("scaled_tilemodes");
73 if (!fPowerOfTwoSize) {
74 name.append("_npot");
75 }
76 return name;
77 }
78
onISize()79 SkISize onISize() override { return SkISize::Make(880, 760); }
80
onOnceBeforeDraw()81 void onOnceBeforeDraw() override {
82 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize;
83 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) {
84 makebm(&fTexture[i], gColorTypes[i], size, size);
85 }
86 }
87
onDraw(SkCanvas * canvas)88 void onDraw(SkCanvas* canvas) override {
89 SkPaint textPaint;
90 SkFont font(ToolUtils::create_portable_typeface(), 12);
91
92 float scale = 32.f/kPOTSize;
93
94 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize;
95
96 SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) };
97
98 const char* gColorTypeNames[] = { "8888" , "565", "4444" };
99
100 constexpr SkFilterQuality gFilterQualitys[] =
101 { kNone_SkFilterQuality,
102 kLow_SkFilterQuality,
103 kMedium_SkFilterQuality,
104 kHigh_SkFilterQuality };
105 const char* gFilterNames[] = { "None", "Low", "Medium", "High" };
106
107 constexpr SkTileMode gModes[] = {
108 SkTileMode::kClamp, SkTileMode::kRepeat, SkTileMode::kMirror };
109 const char* gModeNames[] = { "C", "R", "M" };
110
111 SkScalar y = SkIntToScalar(24);
112 SkScalar x = SkIntToScalar(10)/scale;
113
114 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
115 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
116 SkString str;
117 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]);
118
119 SkTextUtils::DrawString(canvas, str.c_str(), scale*(x + r.width()/2), y, font, SkPaint(),
120 SkTextUtils::kCenter_Align);
121
122 x += r.width() * 4 / 3;
123 }
124 }
125
126 y = SkIntToScalar(40) / scale;
127
128 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) {
129 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilterQualitys); j++) {
130 x = SkIntToScalar(10)/scale;
131 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
132 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
133 SkPaint paint;
134 #if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue
135 // on SGX where resizing NPOT textures to POT textures exhibits a driver bug.
136 if (!fPowerOfTwoSize) {
137 makebm(&fTexture[i], gColorTypes[i], size, size);
138 }
139 #endif
140 setup(&paint, fTexture[i], gFilterQualitys[j], gModes[kx], gModes[ky]);
141 paint.setDither(true);
142
143 canvas->save();
144 canvas->scale(scale,scale);
145 canvas->translate(x, y);
146 canvas->drawRect(r, paint);
147 canvas->restore();
148
149 x += r.width() * 4 / 3;
150 }
151 }
152 canvas->drawString(SkStringPrintf("%s, %s", gColorTypeNames[i], gFilterNames[j]),
153 scale * x, scale * (y + r.height() * 2 / 3), font, textPaint);
154
155 y += r.height() * 4 / 3;
156 }
157 }
158 }
159
160 private:
161 bool fPowerOfTwoSize;
162 using INHERITED = skiagm::GM;
163 };
164
165 constexpr int gWidth = 32;
166 constexpr int gHeight = 32;
167
make_bm(SkTileMode tx,SkTileMode ty)168 static sk_sp<SkShader> make_bm(SkTileMode tx, SkTileMode ty) {
169 SkBitmap bm;
170 makebm(&bm, kN32_SkColorType, gWidth, gHeight);
171 return bm.makeShader(tx, ty);
172 }
173
make_grad(SkTileMode tx,SkTileMode ty)174 static sk_sp<SkShader> make_grad(SkTileMode tx, SkTileMode ty) {
175 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} };
176 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 };
177 SkScalar rad = SkIntToScalar(gWidth)/2;
178 SkColor colors[] = {0xFFFF0000, ToolUtils::color_to_565(0xFF0044FF)};
179
180 int index = (int)ty;
181 switch (index % 3) {
182 case 0:
183 return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors), tx);
184 case 1:
185 return SkGradientShader::MakeRadial(center, rad, colors, nullptr, SK_ARRAY_COUNT(colors), tx);
186 case 2:
187 return SkGradientShader::MakeSweep(center.fX, center.fY, colors, nullptr, SK_ARRAY_COUNT(colors));
188 }
189
190 return nullptr;
191 }
192
193 typedef sk_sp<SkShader> (*ShaderProc)(SkTileMode, SkTileMode);
194
195 class ScaledTiling2GM : public skiagm::GM {
196 ShaderProc fProc;
197 const char* fName;
198 public:
ScaledTiling2GM(ShaderProc proc,const char name[])199 ScaledTiling2GM(ShaderProc proc, const char name[]) : fProc(proc), fName(name) {}
200
201 private:
onShortName()202 SkString onShortName() override { return SkString(fName); }
203
onISize()204 SkISize onISize() override { return SkISize::Make(650, 610); }
205
onDraw(SkCanvas * canvas)206 void onDraw(SkCanvas* canvas) override {
207 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2);
208
209 const SkScalar w = SkIntToScalar(gWidth);
210 const SkScalar h = SkIntToScalar(gHeight);
211 SkRect r = { -w, -h, w*2, h*2 };
212
213 constexpr SkTileMode gModes[] = {
214 SkTileMode::kClamp, SkTileMode::kRepeat, SkTileMode::kMirror
215 };
216 const char* gModeNames[] = {
217 "Clamp", "Repeat", "Mirror"
218 };
219
220 SkScalar y = SkIntToScalar(24);
221 SkScalar x = SkIntToScalar(66);
222
223 SkFont font(ToolUtils::create_portable_typeface());
224
225 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
226 SkString str(gModeNames[kx]);
227 SkTextUtils::DrawString(canvas, str.c_str(), x + r.width()/2, y, font, SkPaint(),
228 SkTextUtils::kCenter_Align);
229 x += r.width() * 4 / 3;
230 }
231
232 y += SkIntToScalar(16) + h;
233
234 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
235 x = SkIntToScalar(16) + w;
236
237 SkString str(gModeNames[ky]);
238 SkTextUtils::DrawString(canvas, str.c_str(), x, y + h/2, font, SkPaint(), SkTextUtils::kRight_Align);
239
240 x += SkIntToScalar(50);
241 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
242 SkPaint paint;
243 paint.setShader(fProc(gModes[kx], gModes[ky]));
244
245 canvas->save();
246 canvas->translate(x, y);
247 canvas->drawRect(r, paint);
248 canvas->restore();
249
250 x += r.width() * 4 / 3;
251 }
252 y += r.height() * 4 / 3;
253 }
254 }
255 };
256
257 //////////////////////////////////////////////////////////////////////////////
258
259 DEF_GM( return new ScaledTilingGM(true); )
260 DEF_GM( return new ScaledTilingGM(false); )
261 DEF_GM( return new ScaledTiling2GM(make_bm, "scaled_tilemode_bitmap"); )
262 DEF_GM( return new ScaledTiling2GM(make_grad, "scaled_tilemode_gradient"); )
263