tilemodes_scaled.cpp revision 33d2055e594177b27360f84e0631b26d74a55a9b 
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// effects
17#include "SkGradientShader.h"
18#include "SkBlurDrawLooper.h"
19
20static void makebm(SkBitmap* bm, SkColorType ct, int w, int h) {
21    bm->allocPixels(SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType));
22    bm->eraseColor(SK_ColorTRANSPARENT);
23
24    SkCanvas    canvas(*bm);
25    SkPoint     pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} };
26    SkColor     colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
27    SkScalar    pos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
28    SkPaint     paint;
29
30    paint.setDither(true);
31    paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos,
32                SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode));
33    canvas.drawPaint(paint);
34}
35
36static void setup(SkPaint* paint, const SkBitmap& bm, SkFilterQuality filter_level,
37                  SkShader::TileMode tmx, SkShader::TileMode tmy) {
38    paint->setShader(SkShader::MakeBitmapShader(bm, tmx, tmy));
39    paint->setFilterQuality(filter_level);
40}
41
42constexpr SkColorType gColorTypes[] = {
43    kN32_SkColorType,
44    kRGB_565_SkColorType,
45};
46
47class ScaledTilingGM : public skiagm::GM {
48public:
49    ScaledTilingGM(bool powerOfTwoSize)
50            : fPowerOfTwoSize(powerOfTwoSize) {
51    }
52
53    SkBitmap    fTexture[SK_ARRAY_COUNT(gColorTypes)];
54
55protected:
56    enum {
57        kPOTSize = 4,
58        kNPOTSize = 3,
59    };
60
61    SkString onShortName() override {
62        SkString name("scaled_tilemodes");
63        if (!fPowerOfTwoSize) {
64            name.append("_npot");
65        }
66        return name;
67    }
68
69    SkISize onISize() override { return SkISize::Make(880, 760); }
70
71    void onOnceBeforeDraw() override {
72        int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize;
73        for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) {
74            makebm(&fTexture[i], gColorTypes[i], size, size);
75        }
76    }
77
78    void onDraw(SkCanvas* canvas) override {
79        float scale = 32.f/kPOTSize;
80
81        int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize;
82
83        SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) };
84
85        const char* gColorTypeNames[] = { "8888" , "565", "4444" };
86
87        constexpr SkFilterQuality gFilterQualitys[] =
88            { kNone_SkFilterQuality,
89              kLow_SkFilterQuality,
90              kMedium_SkFilterQuality,
91              kHigh_SkFilterQuality };
92        const char* gFilterNames[] = { "None", "Low", "Medium", "High" };
93
94        constexpr SkShader::TileMode gModes[] = {
95            SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode };
96        const char* gModeNames[] = { "C", "R", "M" };
97
98        SkScalar y = SkIntToScalar(24);
99        SkScalar x = SkIntToScalar(10)/scale;
100
101        for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
102            for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
103                SkPaint p;
104                SkString str;
105                p.setAntiAlias(true);
106                sk_tool_utils::set_portable_typeface(&p);
107                str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]);
108
109                p.setTextAlign(SkPaint::kCenter_Align);
110                canvas->drawText(str.c_str(), str.size(), scale*(x + r.width()/2), y, p);
111
112                x += r.width() * 4 / 3;
113            }
114        }
115
116        y = SkIntToScalar(40) / scale;
117
118        for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) {
119            for (size_t j = 0; j < SK_ARRAY_COUNT(gFilterQualitys); j++) {
120                x = SkIntToScalar(10)/scale;
121                for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
122                    for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
123                        SkPaint paint;
124#if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue
125      // on SGX where resizing NPOT textures to POT textures exhibits a driver bug.
126                        if (!fPowerOfTwoSize) {
127                            makebm(&fTexture[i], gColorTypes[i], size, size);
128                        }
129#endif
130                        setup(&paint, fTexture[i], gFilterQualitys[j], gModes[kx], gModes[ky]);
131                        paint.setDither(true);
132
133                        canvas->save();
134                        canvas->scale(scale,scale);
135                        canvas->translate(x, y);
136                        canvas->drawRect(r, paint);
137                        canvas->restore();
138
139                        x += r.width() * 4 / 3;
140                    }
141                }
142                {
143                    SkPaint p;
144                    SkString str;
145                    p.setAntiAlias(true);
146                    sk_tool_utils::set_portable_typeface(&p);
147                    str.printf("%s, %s", gColorTypeNames[i], gFilterNames[j]);
148                    canvas->drawText(str.c_str(), str.size(), scale*x, scale*(y + r.height() * 2 / 3), p);
149                }
150
151                y += r.height() * 4 / 3;
152            }
153        }
154    }
155
156private:
157    bool fPowerOfTwoSize;
158    typedef skiagm::GM INHERITED;
159};
160
161constexpr int gWidth = 32;
162constexpr int gHeight = 32;
163
164static sk_sp<SkShader> make_bm(SkShader::TileMode tx, SkShader::TileMode ty) {
165    SkBitmap bm;
166    makebm(&bm, kN32_SkColorType, gWidth, gHeight);
167    return SkShader::MakeBitmapShader(bm, tx, ty);
168}
169
170static sk_sp<SkShader> make_grad(SkShader::TileMode tx, SkShader::TileMode ty) {
171    SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} };
172    SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 };
173    SkScalar rad = SkIntToScalar(gWidth)/2;
174    SkColor colors[] = { 0xFFFF0000, sk_tool_utils::color_to_565(0xFF0044FF) };
175
176    int index = (int)ty;
177    switch (index % 3) {
178        case 0:
179            return SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors), tx);
180        case 1:
181            return SkGradientShader::MakeRadial(center, rad, colors, nullptr, SK_ARRAY_COUNT(colors), tx);
182        case 2:
183            return SkGradientShader::MakeSweep(center.fX, center.fY, colors, nullptr, SK_ARRAY_COUNT(colors));
184    }
185
186    return nullptr;
187}
188
189typedef sk_sp<SkShader> (*ShaderProc)(SkShader::TileMode, SkShader::TileMode);
190
191class ScaledTiling2GM : public skiagm::GM {
192    ShaderProc fProc;
193    SkString   fName;
194public:
195    ScaledTiling2GM(ShaderProc proc, const char name[]) : fProc(proc) {
196        fName.printf("scaled_tilemode_%s", name);
197    }
198
199protected:
200
201    SkString onShortName() override {
202        return fName;
203    }
204
205    SkISize onISize() override { return SkISize::Make(650, 610); }
206
207    void onDraw(SkCanvas* canvas) override {
208        canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2);
209
210        const SkScalar w = SkIntToScalar(gWidth);
211        const SkScalar h = SkIntToScalar(gHeight);
212        SkRect r = { -w, -h, w*2, h*2 };
213
214        constexpr SkShader::TileMode gModes[] = {
215            SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode
216        };
217        const char* gModeNames[] = {
218            "Clamp", "Repeat", "Mirror"
219        };
220
221        SkScalar y = SkIntToScalar(24);
222        SkScalar x = SkIntToScalar(66);
223
224        SkPaint p;
225        p.setAntiAlias(true);
226        sk_tool_utils::set_portable_typeface(&p);
227        p.setTextAlign(SkPaint::kCenter_Align);
228
229        for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
230            SkString str(gModeNames[kx]);
231            canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p);
232            x += r.width() * 4 / 3;
233        }
234
235        y += SkIntToScalar(16) + h;
236        p.setTextAlign(SkPaint::kRight_Align);
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            canvas->drawText(str.c_str(), str.size(), x, y + h/2, p);
243
244            x += SkIntToScalar(50);
245            for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
246                SkPaint paint;
247                paint.setShader(fProc(gModes[kx], gModes[ky]));
248
249                canvas->save();
250                canvas->translate(x, y);
251                canvas->drawRect(r, paint);
252                canvas->restore();
253
254                x += r.width() * 4 / 3;
255            }
256            y += r.height() * 4 / 3;
257        }
258    }
259
260private:
261    typedef skiagm::GM INHERITED;
262};
263
264//////////////////////////////////////////////////////////////////////////////
265
266DEF_GM( return new ScaledTilingGM(true); )
267DEF_GM( return new ScaledTilingGM(false); )
268DEF_GM( return new ScaledTiling2GM(make_bm, "bitmap"); )
269DEF_GM( return new ScaledTiling2GM(make_grad, "gradient"); )
270