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 #include "gm.h"
8 #include "sk_tool_utils.h"
9 #include "SkColorFilter.h"
10 #include "SkMaskFilter.h"
11 #include "SkPath.h"
12 #include "SkRegion.h"
13 #include "SkShader.h"
14 #include "SkUtils.h"
15
16
17 // effects
18 #include "SkGradientShader.h"
19 #include "SkBlurDrawLooper.h"
20
makebm(SkBitmap * bm,SkColorType ct,int w,int h)21 static void makebm(SkBitmap* bm, SkColorType ct, int w, int h) {
22 bm->allocPixels(SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType));
23 bm->eraseColor(SK_ColorTRANSPARENT);
24
25 SkCanvas canvas(*bm);
26 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} };
27 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
28 SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
29 SkPaint paint;
30
31 paint.setDither(true);
32 paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos, SK_ARRAY_COUNT(colors),
33 SkShader::kClamp_TileMode));
34 canvas.drawPaint(paint);
35 }
36
setup(SkPaint * paint,const SkBitmap & bm,bool filter,SkShader::TileMode tmx,SkShader::TileMode tmy)37 static void setup(SkPaint* paint, const SkBitmap& bm, bool filter,
38 SkShader::TileMode tmx, SkShader::TileMode tmy) {
39 paint->setShader(SkShader::MakeBitmapShader(bm, tmx, tmy));
40 paint->setFilterQuality(filter ? kLow_SkFilterQuality : kNone_SkFilterQuality);
41 }
42
43 constexpr SkColorType gColorTypes[] = {
44 kN32_SkColorType,
45 kRGB_565_SkColorType,
46 };
47
48 class TilingGM : public skiagm::GM {
49 public:
TilingGM(bool powerOfTwoSize)50 TilingGM(bool powerOfTwoSize)
51 : fPowerOfTwoSize(powerOfTwoSize) {
52 }
53
54 SkBitmap fTexture[SK_ARRAY_COUNT(gColorTypes)];
55
56 protected:
57
58 enum {
59 kPOTSize = 32,
60 kNPOTSize = 21,
61 };
62
onShortName()63 SkString onShortName() override {
64 SkString name("tilemodes");
65 if (!fPowerOfTwoSize) {
66 name.append("_npot");
67 }
68 return name;
69 }
70
onISize()71 SkISize onISize() override { return SkISize::Make(880, 560); }
72
onOnceBeforeDraw()73 void onOnceBeforeDraw() override {
74 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize;
75 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) {
76 makebm(&fTexture[i], gColorTypes[i], size, size);
77 }
78 }
79
onDraw(SkCanvas * canvas)80 void onDraw(SkCanvas* canvas) override {
81
82 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize;
83
84 SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) };
85
86 const char* gConfigNames[] = { "8888", "565", "4444" };
87
88 constexpr bool gFilters[] = { false, true };
89 static const char* gFilterNames[] = { "point", "bilinear" };
90
91 constexpr SkShader::TileMode gModes[] = {
92 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode };
93 static const char* gModeNames[] = { "C", "R", "M" };
94
95 SkScalar y = SkIntToScalar(24);
96 SkScalar x = SkIntToScalar(10);
97
98 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
99 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
100 SkPaint p;
101 SkString str;
102 p.setAntiAlias(true);
103 sk_tool_utils::set_portable_typeface(&p);
104 p.setDither(true);
105 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]);
106
107 p.setTextAlign(SkPaint::kCenter_Align);
108 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p);
109
110 x += r.width() * 4 / 3;
111 }
112 }
113
114 y += SkIntToScalar(16);
115
116 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) {
117 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilters); j++) {
118 x = SkIntToScalar(10);
119 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
120 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
121 SkPaint paint;
122 #if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue
123 // on SGX where resizing NPOT textures to POT textures exhibits a driver bug.
124 if (!fPowerOfTwoSize) {
125 makebm(&fTexture[i], gColorTypes[i], size, size);
126 }
127 #endif
128 setup(&paint, fTexture[i], gFilters[j], gModes[kx], gModes[ky]);
129 paint.setDither(true);
130
131 canvas->save();
132 canvas->translate(x, y);
133 canvas->drawRect(r, paint);
134 canvas->restore();
135
136 x += r.width() * 4 / 3;
137 }
138 }
139 {
140 SkPaint p;
141 SkString str;
142 p.setAntiAlias(true);
143 sk_tool_utils::set_portable_typeface(&p);
144 str.printf("%s, %s", gConfigNames[i], gFilterNames[j]);
145 canvas->drawText(str.c_str(), str.size(), x, y + r.height() * 2 / 3, p);
146 }
147
148 y += r.height() * 4 / 3;
149 }
150 }
151 }
152
153 private:
154 bool fPowerOfTwoSize;
155 typedef skiagm::GM INHERITED;
156 };
157
158 constexpr int gWidth = 32;
159 constexpr int gHeight = 32;
160
make_bm(SkShader::TileMode tx,SkShader::TileMode ty)161 static sk_sp<SkShader> make_bm(SkShader::TileMode tx, SkShader::TileMode ty) {
162 SkBitmap bm;
163 makebm(&bm, kN32_SkColorType, gWidth, gHeight);
164 return SkShader::MakeBitmapShader(bm, tx, ty);
165 }
166
make_grad(SkShader::TileMode tx,SkShader::TileMode ty)167 static sk_sp<SkShader> make_grad(SkShader::TileMode tx, SkShader::TileMode ty) {
168 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} };
169 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 };
170 SkScalar rad = SkIntToScalar(gWidth)/2;
171 SkColor colors[] = { 0xFFFF0000, sk_tool_utils::color_to_565(0xFF0044FF) };
172
173 int index = (int)ty;
174 switch (index % 3) {
175 case 0:
176 return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors), tx);
177 case 1:
178 return SkGradientShader::MakeRadial(center, rad, colors, nullptr, SK_ARRAY_COUNT(colors), tx);
179 case 2:
180 return SkGradientShader::MakeSweep(center.fX, center.fY, colors, nullptr, SK_ARRAY_COUNT(colors));
181 }
182 return nullptr;
183 }
184
185 typedef sk_sp<SkShader> (*ShaderProc)(SkShader::TileMode, SkShader::TileMode);
186
187 class Tiling2GM : public skiagm::GM {
188 ShaderProc fProc;
189 SkString fName;
190 public:
Tiling2GM(ShaderProc proc,const char name[])191 Tiling2GM(ShaderProc proc, const char name[]) : fProc(proc) {
192 fName.printf("tilemode_%s", name);
193 }
194
195 protected:
196
onShortName()197 SkString onShortName() override {
198 return fName;
199 }
200
onISize()201 SkISize onISize() override { return SkISize::Make(650, 610); }
202
onDraw(SkCanvas * canvas)203 void onDraw(SkCanvas* canvas) override {
204 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2);
205
206 const SkScalar w = SkIntToScalar(gWidth);
207 const SkScalar h = SkIntToScalar(gHeight);
208 SkRect r = { -w, -h, w*2, h*2 };
209
210 constexpr SkShader::TileMode gModes[] = {
211 SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode
212 };
213 const char* gModeNames[] = {
214 "Clamp", "Repeat", "Mirror"
215 };
216
217 SkScalar y = SkIntToScalar(24);
218 SkScalar x = SkIntToScalar(66);
219
220 SkPaint p;
221 p.setAntiAlias(true);
222 sk_tool_utils::set_portable_typeface(&p);
223 p.setTextAlign(SkPaint::kCenter_Align);
224
225 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
226 SkString str(gModeNames[kx]);
227 canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p);
228 x += r.width() * 4 / 3;
229 }
230
231 y += SkIntToScalar(16) + h;
232 p.setTextAlign(SkPaint::kRight_Align);
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 canvas->drawText(str.c_str(), str.size(), x, y + h/2, p);
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 private:
257 typedef skiagm::GM INHERITED;
258 };
259
260 //////////////////////////////////////////////////////////////////////////////
261
262 DEF_GM( return new TilingGM(true); )
263 DEF_GM( return new TilingGM(false); )
264 DEF_GM( return new Tiling2GM(make_bm, "bitmap"); )
265 DEF_GM( return new Tiling2GM(make_grad, "gradient"); )
266