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/SkImage.h"
15 #include "include/core/SkImageInfo.h"
16 #include "include/core/SkPaint.h"
17 #include "include/core/SkPoint.h"
18 #include "include/core/SkRect.h"
19 #include "include/core/SkRefCnt.h"
20 #include "include/core/SkScalar.h"
21 #include "include/core/SkShader.h"
22 #include "include/core/SkSize.h"
23 #include "include/core/SkString.h"
24 #include "include/core/SkTileMode.h"
25 #include "include/core/SkTypeface.h"
26 #include "include/core/SkTypes.h"
27 #include "include/effects/SkGradientShader.h"
28 #include "include/utils/SkTextUtils.h"
29 #include "tools/Resources.h"
30 #include "tools/ToolUtils.h"
31
32 #include <functional>
33
makebm(SkBitmap * bm,SkColorType ct,int w,int h)34 static void makebm(SkBitmap* bm, SkColorType ct, int w, int h) {
35 bm->allocPixels(SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType));
36 bm->eraseColor(SK_ColorTRANSPARENT);
37
38 SkCanvas canvas(*bm);
39 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} };
40 SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
41 SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
42 SkPaint paint;
43
44 paint.setDither(true);
45 paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos, SK_ARRAY_COUNT(colors),
46 SkTileMode::kClamp));
47 canvas.drawPaint(paint);
48 }
49
setup(SkPaint * paint,const SkBitmap & bm,bool filter,SkTileMode tmx,SkTileMode tmy)50 static void setup(SkPaint* paint, const SkBitmap& bm, bool filter,
51 SkTileMode tmx, SkTileMode tmy) {
52 paint->setShader(bm.makeShader(tmx, tmy));
53 paint->setFilterQuality(filter ? kLow_SkFilterQuality : kNone_SkFilterQuality);
54 }
55
56 constexpr SkColorType gColorTypes[] = {
57 kN32_SkColorType,
58 kRGB_565_SkColorType,
59 };
60
61 class TilingGM : public skiagm::GM {
62 public:
TilingGM(bool powerOfTwoSize)63 TilingGM(bool powerOfTwoSize)
64 : fPowerOfTwoSize(powerOfTwoSize) {
65 }
66
67 SkBitmap fTexture[SK_ARRAY_COUNT(gColorTypes)];
68
69 protected:
70
71 enum {
72 kPOTSize = 32,
73 kNPOTSize = 21,
74 };
75
onShortName()76 SkString onShortName() override {
77 SkString name("tilemodes");
78 if (!fPowerOfTwoSize) {
79 name.append("_npot");
80 }
81 return name;
82 }
83
onISize()84 SkISize onISize() override { return SkISize::Make(880, 560); }
85
onOnceBeforeDraw()86 void onOnceBeforeDraw() override {
87 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize;
88 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) {
89 makebm(&fTexture[i], gColorTypes[i], size, size);
90 }
91 }
92
onDraw(SkCanvas * canvas)93 void onDraw(SkCanvas* canvas) override {
94 SkPaint textPaint;
95 SkFont font(ToolUtils::create_portable_typeface(), 12);
96
97 int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize;
98
99 SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) };
100
101 const char* gConfigNames[] = { "8888", "565", "4444" };
102
103 constexpr bool gFilters[] = { false, true };
104 static const char* gFilterNames[] = { "point", "bilinear" };
105
106 constexpr SkTileMode gModes[] = {
107 SkTileMode::kClamp, SkTileMode::kRepeat, SkTileMode::kMirror };
108 static const char* gModeNames[] = { "C", "R", "M" };
109
110 SkScalar y = SkIntToScalar(24);
111 SkScalar x = SkIntToScalar(10);
112
113 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
114 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
115 SkPaint p;
116 p.setDither(true);
117 SkString str;
118 SkFont font(ToolUtils::create_portable_typeface());
119 str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]);
120
121 SkTextUtils::DrawString(canvas, str.c_str(), x + r.width()/2, y, font, p,
122 SkTextUtils::kCenter_Align);
123
124 x += r.width() * 4 / 3;
125 }
126 }
127
128 y += SkIntToScalar(16);
129
130 for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) {
131 for (size_t j = 0; j < SK_ARRAY_COUNT(gFilters); j++) {
132 x = SkIntToScalar(10);
133 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
134 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
135 SkPaint paint;
136 #if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue
137 // on SGX where resizing NPOT textures to POT textures exhibits a driver bug.
138 if (!fPowerOfTwoSize) {
139 makebm(&fTexture[i], gColorTypes[i], size, size);
140 }
141 #endif
142 setup(&paint, fTexture[i], gFilters[j], gModes[kx], gModes[ky]);
143 paint.setDither(true);
144
145 canvas->save();
146 canvas->translate(x, y);
147 canvas->drawRect(r, paint);
148 canvas->restore();
149
150 x += r.width() * 4 / 3;
151 }
152 }
153 canvas->drawString(SkStringPrintf("%s, %s", gConfigNames[i], gFilterNames[j]),
154 x, y + r.height() * 2 / 3, font, textPaint);
155
156 y += r.height() * 4 / 3;
157 }
158 }
159 }
160
161 private:
162 bool fPowerOfTwoSize;
163 typedef skiagm::GM INHERITED;
164 };
165 DEF_GM( return new TilingGM(true); )
166 DEF_GM( return new TilingGM(false); )
167
168 constexpr int gWidth = 32;
169 constexpr int gHeight = 32;
170
make_bm(SkTileMode tx,SkTileMode ty)171 static sk_sp<SkShader> make_bm(SkTileMode tx, SkTileMode ty) {
172 SkBitmap bm;
173 makebm(&bm, kN32_SkColorType, gWidth, gHeight);
174 return bm.makeShader(tx, ty);
175 }
176
make_grad(SkTileMode tx,SkTileMode ty)177 static sk_sp<SkShader> make_grad(SkTileMode tx, SkTileMode ty) {
178 SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} };
179 SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 };
180 SkScalar rad = SkIntToScalar(gWidth)/2;
181 SkColor colors[] = {0xFFFF0000, ToolUtils::color_to_565(0xFF0044FF)};
182
183 int index = (int)ty;
184 switch (index % 3) {
185 case 0:
186 return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors), tx);
187 case 1:
188 return SkGradientShader::MakeRadial(center, rad, colors, nullptr, SK_ARRAY_COUNT(colors), tx);
189 case 2:
190 return SkGradientShader::MakeSweep(center.fX, center.fY, colors, nullptr,
191 SK_ARRAY_COUNT(colors), tx, 135, 225, 0, nullptr);
192 }
193 return nullptr;
194 }
195
196 typedef sk_sp<SkShader> (*ShaderProc)(SkTileMode, SkTileMode);
197
198 class Tiling2GM : public skiagm::GM {
199 ShaderProc fProc;
200 const char* fName;
201
202 public:
Tiling2GM(ShaderProc proc,const char name[])203 Tiling2GM(ShaderProc proc, const char name[]) : fProc(proc), fName(name) {}
204
205 private:
onShortName()206 SkString onShortName() override { return SkString(fName); }
207
onISize()208 SkISize onISize() override { return SkISize::Make(650, 610); }
209
onDraw(SkCanvas * canvas)210 void onDraw(SkCanvas* canvas) override {
211 canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2);
212
213 const SkScalar w = SkIntToScalar(gWidth);
214 const SkScalar h = SkIntToScalar(gHeight);
215 SkRect r = { -w, -h, w*2, h*2 };
216
217 constexpr SkTileMode gModes[] = {
218 SkTileMode::kClamp, SkTileMode::kRepeat, SkTileMode::kMirror
219 };
220 const char* gModeNames[] = {
221 "Clamp", "Repeat", "Mirror"
222 };
223
224 SkScalar y = SkIntToScalar(24);
225 SkScalar x = SkIntToScalar(66);
226
227 SkFont font(ToolUtils::create_portable_typeface());
228
229 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
230 SkString str(gModeNames[kx]);
231 SkTextUtils::DrawString(canvas, str.c_str(), x + r.width()/2, y, font, SkPaint(),
232 SkTextUtils::kCenter_Align);
233 x += r.width() * 4 / 3;
234 }
235
236 y += SkIntToScalar(16) + h;
237
238 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
239 x = SkIntToScalar(16) + w;
240
241 SkString str(gModeNames[ky]);
242 SkTextUtils::DrawString(canvas, str.c_str(), x, y + h/2, font, SkPaint(),
243 SkTextUtils::kRight_Align);
244
245 x += SkIntToScalar(50);
246 for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
247 SkPaint paint;
248 paint.setShader(fProc(gModes[kx], gModes[ky]));
249
250 canvas->save();
251 canvas->translate(x, y);
252 canvas->drawRect(r, paint);
253 canvas->restore();
254
255 x += r.width() * 4 / 3;
256 }
257 y += r.height() * 4 / 3;
258 }
259 }
260 };
261
262 DEF_GM( return new Tiling2GM(make_bm, "tilemode_bitmap"); )
263 DEF_GM( return new Tiling2GM(make_grad, "tilemode_gradient"); )
264
265 ////////////////////
266
267 DEF_SIMPLE_GM(tilemode_decal, canvas, 720, 1100) {
268 auto img = GetResourceAsImage("images/mandrill_128.png");
269 SkPaint bgpaint;
270 bgpaint.setColor(SK_ColorYELLOW);
271
272 SkRect r = { -20, -20, img->width() + 20.0f, img->height() + 20.0f };
273 canvas->translate(45, 45);
274
275 std::function<void(SkPaint*, SkTileMode, SkTileMode)> shader_procs[] = {
__anon27c05da90202() 276 [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) {
277 // Test no filtering with decal mode
278 paint->setShader(img->makeShader(tx, ty));
279 paint->setFilterQuality(kNone_SkFilterQuality);
280 },
__anon27c05da90302() 281 [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) {
282 // Test bilerp approximation for decal mode (or clamp to border HW)
283 paint->setShader(img->makeShader(tx, ty));
284 paint->setFilterQuality(kLow_SkFilterQuality);
285 },
__anon27c05da90402() 286 [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) {
287 // Test bicubic filter with decal mode
288 paint->setShader(img->makeShader(tx, ty));
289 paint->setFilterQuality(kHigh_SkFilterQuality);
290 },
__anon27c05da90502() 291 [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) {
292 SkColor colors[] = { SK_ColorRED, SK_ColorBLUE };
293 const SkPoint pts[] = {{ 0, 0 }, {img->width()*1.0f, img->height()*1.0f }};
294 const SkScalar* pos = nullptr;
295 const int count = SK_ARRAY_COUNT(colors);
296 paint->setShader(SkGradientShader::MakeLinear(pts, colors, pos, count, tx));
297 },
__anon27c05da90602() 298 [img](SkPaint* paint, SkTileMode tx, SkTileMode ty) {
299 SkColor colors[] = { SK_ColorRED, SK_ColorBLUE };
300 const SkScalar* pos = nullptr;
301 const int count = SK_ARRAY_COUNT(colors);
302 paint->setShader(SkGradientShader::MakeRadial({ img->width()*0.5f, img->width()*0.5f },
303 img->width()*0.5f, colors, pos, count, tx));
304 },
305 };
306
307 const struct XY {
308 SkTileMode fX;
309 SkTileMode fY;
310 } pairs[] = {
311 { SkTileMode::kClamp, SkTileMode::kClamp },
312 { SkTileMode::kClamp, SkTileMode::kDecal },
313 { SkTileMode::kDecal, SkTileMode::kClamp },
314 { SkTileMode::kDecal, SkTileMode::kDecal },
315 };
316 for (const auto& p : pairs) {
317 SkPaint paint;
318 canvas->save();
319 for (const auto& proc : shader_procs) {
320 canvas->save();
321 // Apply a slight rotation to highlight the differences between filtered and unfiltered
322 // decal edges
323 canvas->rotate(4);
324 canvas->drawRect(r, bgpaint);
325 proc(&paint, p.fX, p.fY);
326 canvas->drawRect(r, paint);
327 canvas->restore();
328 canvas->translate(0, r.height() + 20);
329 }
330 canvas->restore();
331 canvas->translate(r.width() + 10, 0);
332 }
333 }
334
335
