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/SkBlurTypes.h"
11 #include "include/core/SkCanvas.h"
12 #include "include/core/SkColor.h"
13 #include "include/core/SkFont.h"
14 #include "include/core/SkImage.h"
15 #include "include/core/SkImageInfo.h"
16 #include "include/core/SkMaskFilter.h"
17 #include "include/core/SkMatrix.h"
18 #include "include/core/SkPaint.h"
19 #include "include/core/SkPoint.h"
20 #include "include/core/SkRect.h"
21 #include "include/core/SkRefCnt.h"
22 #include "include/core/SkScalar.h"
23 #include "include/core/SkShader.h"
24 #include "include/core/SkSize.h"
25 #include "include/core/SkString.h"
26 #include "include/core/SkSurface.h"
27 #include "include/core/SkTileMode.h"
28 #include "include/core/SkTypeface.h"
29 #include "include/core/SkTypes.h"
30 #include "include/effects/SkGradientShader.h"
31 #include "include/gpu/ganesh/GrDirectContext.h"
32 #include "src/base/SkMathPriv.h"
33 #include "src/core/SkBlurMask.h"
34 #include "tools/GpuToolUtils.h"
35 #include "tools/ToolUtils.h"
36 #include "tools/fonts/FontToolUtils.h"
37
make_chessbm(int w,int h)38 static SkBitmap make_chessbm(int w, int h) {
39 SkBitmap bm;
40 bm.allocN32Pixels(w, h);
41
42 for (int y = 0; y < bm.height(); y++) {
43 uint32_t* p = bm.getAddr32(0, y);
44 for (int x = 0; x < bm.width(); x++) {
45 p[x] = ((x + y) & 1) ? SK_ColorWHITE : SK_ColorBLACK;
46 }
47 }
48 bm.setImmutable();
49 return bm;
50 }
51
52 // Creates a bitmap and a matching image.
makebm(SkCanvas * origCanvas,SkBitmap * resultBM,int w,int h)53 static sk_sp<SkImage> makebm(SkCanvas* origCanvas, SkBitmap* resultBM, int w, int h) {
54 SkImageInfo info = SkImageInfo::MakeN32Premul(w, h);
55
56 auto surface(ToolUtils::makeSurface(origCanvas, info));
57 SkCanvas* canvas = surface->getCanvas();
58
59 canvas->clear(SK_ColorTRANSPARENT);
60
61 SkScalar wScalar = SkIntToScalar(w);
62 SkScalar hScalar = SkIntToScalar(h);
63
64 SkPoint pt = { wScalar / 2, hScalar / 2 };
65
66 SkScalar radius = 4 * std::max(wScalar, hScalar);
67
68 SkColor colors[] = { SK_ColorRED, SK_ColorYELLOW,
69 SK_ColorGREEN, SK_ColorMAGENTA,
70 SK_ColorBLUE, SK_ColorCYAN,
71 SK_ColorRED};
72
73 SkScalar pos[] = {0,
74 SK_Scalar1 / 6,
75 2 * SK_Scalar1 / 6,
76 3 * SK_Scalar1 / 6,
77 4 * SK_Scalar1 / 6,
78 5 * SK_Scalar1 / 6,
79 SK_Scalar1};
80
81 SkPaint paint;
82 SkRect rect = SkRect::MakeWH(wScalar, hScalar);
83 SkMatrix mat = SkMatrix::I();
84 for (int i = 0; i < 4; ++i) {
85 paint.setShader(SkGradientShader::MakeRadial(
86 pt, radius,
87 colors, pos,
88 std::size(colors),
89 SkTileMode::kRepeat,
90 0, &mat));
91 canvas->drawRect(rect, paint);
92 rect.inset(wScalar / 8, hScalar / 8);
93 mat.postScale(SK_Scalar1 / 4, SK_Scalar1 / 4);
94 }
95
96 auto image = surface->makeImageSnapshot();
97
98 SkBitmap tempBM;
99
100 image->asLegacyBitmap(&tempBM);
101
102 // Let backends know we won't change this, so they don't have to deep copy it defensively.
103 tempBM.setImmutable();
104 *resultBM = tempBM;
105
106 return image;
107 }
108
bitmapproc(SkCanvas * canvas,sk_sp<SkImage> image,const SkBitmap &,const SkIRect & srcR,const SkRect & dstR,const SkSamplingOptions & sampling,const SkPaint * paint)109 static void bitmapproc(SkCanvas* canvas, sk_sp<SkImage> image,
110 const SkBitmap&, const SkIRect& srcR,
111 const SkRect& dstR, const SkSamplingOptions& sampling,
112 const SkPaint* paint) {
113 canvas->drawImageRect(image, SkRect::Make(srcR), dstR, sampling, paint,
114 SkCanvas::kStrict_SrcRectConstraint);
115 }
116
bitmapsubsetproc(SkCanvas * canvas,sk_sp<SkImage> image,const SkBitmap & bm,const SkIRect & srcR,const SkRect & dstR,const SkSamplingOptions & sampling,const SkPaint * paint)117 static void bitmapsubsetproc(SkCanvas* canvas, sk_sp<SkImage> image,
118 const SkBitmap& bm, const SkIRect& srcR,
119 const SkRect& dstR, const SkSamplingOptions& sampling,
120 const SkPaint* paint) {
121 if (!bm.bounds().contains(srcR)) {
122 bitmapproc(canvas, std::move(image), bm, srcR, dstR, sampling, paint);
123 return;
124 }
125
126 SkBitmap subset;
127 if (bm.extractSubset(&subset, srcR)) {
128 sk_sp<SkImage> subsetImg = ToolUtils::MakeTextureImage(canvas, subset.asImage());
129 canvas->drawImageRect(subsetImg, dstR, sampling, paint);
130 }
131 }
132
imageproc(SkCanvas * canvas,sk_sp<SkImage> image,const SkBitmap &,const SkIRect & srcR,const SkRect & dstR,const SkSamplingOptions & sampling,const SkPaint * paint)133 static void imageproc(SkCanvas* canvas, sk_sp<SkImage> image, const SkBitmap&, const SkIRect& srcR,
134 const SkRect& dstR, const SkSamplingOptions& sampling, const SkPaint* paint) {
135 sk_sp<SkImage> tmp = ToolUtils::MakeTextureImage(canvas, std::move(image));
136 canvas->drawImageRect(tmp, SkRect::Make(srcR), dstR, sampling, paint,
137 SkCanvas::kStrict_SrcRectConstraint);
138 }
139
imagesubsetproc(SkCanvas * canvas,sk_sp<SkImage> image,const SkBitmap & bm,const SkIRect & srcR,const SkRect & dstR,const SkSamplingOptions & sampling,const SkPaint * paint)140 static void imagesubsetproc(SkCanvas* canvas, sk_sp<SkImage> image, const SkBitmap& bm,
141 const SkIRect& srcR, const SkRect& dstR,
142 const SkSamplingOptions& sampling, const SkPaint* paint) {
143 SkASSERT_RELEASE(image);
144 if (!image->bounds().contains(srcR)) {
145 imageproc(canvas, std::move(image), bm, srcR, dstR, sampling, paint);
146 return;
147 }
148
149 auto direct = GrAsDirectContext(canvas->recordingContext());
150 if (sk_sp<SkImage> subset = image->makeSubset(direct, srcR)) {
151 canvas->drawImageRect(subset, dstR, sampling, paint);
152 return;
153 }
154 #if defined(SK_GRAPHITE)
155 if (sk_sp<SkImage> subset = image->makeSubset(canvas->recorder(), srcR, {})) {
156 canvas->drawImageRect(subset, dstR, sampling, paint);
157 }
158 #endif
159 }
160
161 typedef void DrawRectRectProc(SkCanvas*, sk_sp<SkImage>, const SkBitmap&,
162 const SkIRect& srcR, const SkRect& dstR,
163 const SkSamplingOptions&, const SkPaint*);
164
165 constexpr int gSize = 1024;
166 constexpr int gBmpSize = 2048;
167
168 class DrawBitmapRectGM : public skiagm::GM {
169 public:
DrawBitmapRectGM(DrawRectRectProc proc,const char suffix[])170 DrawBitmapRectGM(DrawRectRectProc proc, const char suffix[]) : fProc(proc) {
171 fName.set("drawbitmaprect");
172 if (suffix) {
173 fName.append(suffix);
174 }
175 }
176
177 DrawRectRectProc* fProc;
178 SkBitmap fLargeBitmap;
179 sk_sp<SkImage> fImage;
180 SkString fName;
181
182 protected:
getName() const183 SkString getName() const override { return fName; }
184
getISize()185 SkISize getISize() override { return SkISize::Make(gSize, gSize); }
186
onDraw(SkCanvas * canvas,SkString * errorMsg)187 DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
188 if (!fImage || !fImage->isValid(canvas->recordingContext())) {
189 fImage = ToolUtils::MakeTextureImage(canvas,
190 makebm(canvas, &fLargeBitmap, gBmpSize, gBmpSize));
191 if (!fImage) {
192 *errorMsg = "Image creation failed";
193 return DrawResult::kSkip;
194 }
195 }
196
197 SkRect dstRect = { 0, 0, SkIntToScalar(64), SkIntToScalar(64)};
198 const int kMaxSrcRectSize = 1 << (SkNextLog2(gBmpSize) + 2);
199
200 const int kPadX = 30;
201 const int kPadY = 40;
202 SkPaint alphaPaint;
203 alphaPaint.setAlphaf(0.125f);
204 canvas->drawImageRect(fImage, SkRect::MakeIWH(gSize, gSize), SkSamplingOptions(),
205 &alphaPaint);
206 canvas->translate(SK_Scalar1 * kPadX / 2,
207 SK_Scalar1 * kPadY / 2);
208 SkPaint blackPaint;
209 SkScalar titleHeight = SK_Scalar1 * 24;
210 blackPaint.setColor(SK_ColorBLACK);
211 blackPaint.setAntiAlias(true);
212
213 SkFont font(ToolUtils::DefaultPortableTypeface(), titleHeight);
214
215 SkString title;
216 title.printf("Bitmap size: %d x %d", gBmpSize, gBmpSize);
217 canvas->drawString(title, 0, titleHeight, font, blackPaint);
218
219 canvas->translate(0, SK_Scalar1 * kPadY / 2 + titleHeight);
220 int rowCount = 0;
221 canvas->save();
222 for (int w = 1; w <= kMaxSrcRectSize; w *= 4) {
223 for (int h = 1; h <= kMaxSrcRectSize; h *= 4) {
224
225 SkIRect srcRect = SkIRect::MakeXYWH((gBmpSize - w) / 2, (gBmpSize - h) / 2, w, h);
226 fProc(canvas, fImage, fLargeBitmap, srcRect, dstRect, SkSamplingOptions(),
227 nullptr);
228
229 SkString label;
230 label.appendf("%d x %d", w, h);
231 blackPaint.setAntiAlias(true);
232 blackPaint.setStyle(SkPaint::kFill_Style);
233 font.setSize(SK_Scalar1 * 10);
234 SkScalar baseline = dstRect.height() + font.getSize() + SK_Scalar1 * 3;
235 canvas->drawString(label, 0, baseline, font, blackPaint);
236 blackPaint.setStyle(SkPaint::kStroke_Style);
237 blackPaint.setStrokeWidth(SK_Scalar1);
238 blackPaint.setAntiAlias(false);
239 canvas->drawRect(dstRect, blackPaint);
240
241 canvas->translate(dstRect.width() + SK_Scalar1 * kPadX, 0);
242 ++rowCount;
243 if ((dstRect.width() + kPadX) * rowCount > gSize) {
244 canvas->restore();
245 canvas->translate(0, dstRect.height() + SK_Scalar1 * kPadY);
246 canvas->save();
247 rowCount = 0;
248 }
249 }
250 }
251
252 {
253 // test the following code path:
254 // SkGpuDevice::drawPath() -> SkGpuDevice::drawWithMaskFilter()
255 SkIRect srcRect;
256 SkPaint maskPaint;
257 SkBitmap bm = make_chessbm(5, 5);
258 sk_sp<SkImage> img = ToolUtils::MakeTextureImage(canvas, bm.asImage());
259
260 srcRect.setXYWH(1, 1, 3, 3);
261 maskPaint.setMaskFilter(SkMaskFilter::MakeBlur(
262 kNormal_SkBlurStyle,
263 SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5))));
264
265 fProc(canvas, img, bm, srcRect, dstRect,
266 SkSamplingOptions(SkFilterMode::kLinear), &maskPaint);
267 }
268
269 return DrawResult::kOk;
270 }
271
272 private:
273 using INHERITED = skiagm::GM;
274 };
275
276 DEF_GM( return new DrawBitmapRectGM(bitmapproc , nullptr); )
277 DEF_GM( return new DrawBitmapRectGM(bitmapsubsetproc, "-subset"); )
278 DEF_GM( return new DrawBitmapRectGM(imageproc , "-imagerect"); )
279 DEF_GM( return new DrawBitmapRectGM(imagesubsetproc , "-imagerect-subset"); )
280