1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkCanvas.h"
#include "SkBlurMaskFilter.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
namespace skiagm {
extern GrContext* GetGr();
};
#endif
// Create a black&white checked texture with a 1-pixel red ring
// around the outside edge
static void make_red_ringed_bitmap(SkBitmap* result, int width, int height) {
SkASSERT(0 == width % 2 && 0 == width % 2);
result->setConfig(SkBitmap::kARGB_8888_Config, width, height);
result->allocPixels();
SkAutoLockPixels lock(*result);
SkPMColor* scanline = result->getAddr32(0, 0);
for (int x = 0; x < width; ++x) {
scanline[x] = SK_ColorRED;
}
for (int y = 1; y < height/2; ++y) {
scanline = result->getAddr32(0, y);
scanline[0] = SK_ColorRED;
for (int x = 1; x < width/2; ++x) {
scanline[x] = SK_ColorBLACK;
}
for (int x = width/2; x < width-1; ++x) {
scanline[x] = SK_ColorWHITE;
}
scanline[width-1] = SK_ColorRED;
}
for (int y = height/2; y < height-1; ++y) {
scanline = result->getAddr32(0, y);
scanline[0] = SK_ColorRED;
for (int x = 1; x < width/2; ++x) {
scanline[x] = SK_ColorWHITE;
}
for (int x = width/2; x < width-1; ++x) {
scanline[x] = SK_ColorBLACK;
}
scanline[width-1] = SK_ColorRED;
}
scanline = result->getAddr32(0, height-1);
for (int x = 0; x < width; ++x) {
scanline[x] = SK_ColorRED;
}
result->setIsOpaque(true);
result->setImmutable();
}
// This GM exercises the drawBitmapRectToRect "bleed" flag
class BleedGM : public skiagm::GM {
public:
BleedGM() {}
protected:
virtual SkString onShortName() SK_OVERRIDE {
return SkString("bleed");
}
virtual SkISize onISize() SK_OVERRIDE {
return SkISize::Make(kWidth, kHeight);
}
virtual void onOnceBeforeDraw() SK_OVERRIDE {
make_red_ringed_bitmap(&fBitmapSmall, kSmallTextureSize, kSmallTextureSize);
// To exercise the GPU's tiling path we need a texture
// too big for the GPU to handle in one go
make_red_ringed_bitmap(&fBitmapBig, 2*kMaxTextureSize, 2*kMaxTextureSize);
}
// Draw only the center of the small bitmap
void drawCase1(SkCanvas* canvas, int transX, int transY,
SkCanvas::DrawBitmapRectFlags flags, bool filter) {
SkRect src = SkRect::MakeXYWH(1, 1,
kSmallTextureSize-2,
kSmallTextureSize-2);
SkRect dst = SkRect::MakeXYWH(0, 0, SkIntToScalar(kBlockSize), SkIntToScalar(kBlockSize));
SkPaint paint;
paint.setFilterBitmap(filter);
canvas->save();
canvas->translate(SkIntToScalar(transX), SkIntToScalar(transY));
canvas->drawBitmapRectToRect(fBitmapSmall, &src, dst, &paint, flags);
canvas->restore();
}
// Draw almost all of the large bitmap
void drawCase2(SkCanvas* canvas, int transX, int transY,
SkCanvas::DrawBitmapRectFlags flags, bool filter) {
SkRect src = SkRect::MakeXYWH(1, 1,
SkIntToScalar(fBitmapBig.width()-2),
SkIntToScalar(fBitmapBig.height()-2));
SkRect dst = SkRect::MakeXYWH(0, 0, SkIntToScalar(kBlockSize), SkIntToScalar(kBlockSize));
SkPaint paint;
paint.setFilterBitmap(filter);
canvas->save();
canvas->translate(SkIntToScalar(transX), SkIntToScalar(transY));
canvas->drawBitmapRectToRect(fBitmapBig, &src, dst, &paint, flags);
canvas->restore();
}
// Draw ~1/4 of the large bitmap
void drawCase3(SkCanvas* canvas, int transX, int transY,
SkCanvas::DrawBitmapRectFlags flags, bool filter) {
SkRect src = SkRect::MakeXYWH(1, 1,
SkIntToScalar(fBitmapBig.width()/2-1),
SkIntToScalar(fBitmapBig.height()/2-1));
SkRect dst = SkRect::MakeXYWH(0, 0, SkIntToScalar(kBlockSize), SkIntToScalar(kBlockSize));
SkPaint paint;
paint.setFilterBitmap(filter);
canvas->save();
canvas->translate(SkIntToScalar(transX), SkIntToScalar(transY));
canvas->drawBitmapRectToRect(fBitmapBig, &src, dst, &paint, flags);
canvas->restore();
}
// Draw the center of the small bitmap with a mask filter
void drawCase4(SkCanvas* canvas, int transX, int transY,
SkCanvas::DrawBitmapRectFlags flags, bool filter) {
SkRect src = SkRect::MakeXYWH(1, 1,
kSmallTextureSize-2,
kSmallTextureSize-2);
SkRect dst = SkRect::MakeXYWH(0, 0, SkIntToScalar(kBlockSize), SkIntToScalar(kBlockSize));
SkPaint paint;
paint.setFilterBitmap(filter);
SkMaskFilter* mf = SkBlurMaskFilter::Create(SkIntToScalar(3),
SkBlurMaskFilter::kNormal_BlurStyle);
paint.setMaskFilter(mf)->unref();
canvas->save();
canvas->translate(SkIntToScalar(transX), SkIntToScalar(transY));
canvas->drawBitmapRectToRect(fBitmapSmall, &src, dst, &paint, flags);
canvas->restore();
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
canvas->clear(SK_ColorGRAY);
// First draw a column with no bleeding, tiling, or filtering
this->drawCase1(canvas, kCol0X, kRow0Y, SkCanvas::kNone_DrawBitmapRectFlag, false);
this->drawCase2(canvas, kCol0X, kRow1Y, SkCanvas::kNone_DrawBitmapRectFlag, false);
this->drawCase3(canvas, kCol0X, kRow2Y, SkCanvas::kNone_DrawBitmapRectFlag, false);
this->drawCase4(canvas, kCol0X, kRow3Y, SkCanvas::kNone_DrawBitmapRectFlag, false);
// Then draw a column with no bleeding or tiling but with filtering
this->drawCase1(canvas, kCol1X, kRow0Y, SkCanvas::kNone_DrawBitmapRectFlag, true);
this->drawCase2(canvas, kCol1X, kRow1Y, SkCanvas::kNone_DrawBitmapRectFlag, true);
this->drawCase3(canvas, kCol1X, kRow2Y, SkCanvas::kNone_DrawBitmapRectFlag, true);
this->drawCase4(canvas, kCol1X, kRow3Y, SkCanvas::kNone_DrawBitmapRectFlag, true);
#if SK_SUPPORT_GPU
GrContext* ctx = skiagm::GetGr();
int oldMaxTextureSize = 0;
if (NULL != ctx) {
// shrink the max texture size so all our textures can be reasonably sized
oldMaxTextureSize = ctx->getMaxTextureSize();
ctx->setMaxTextureSizeOverride(kMaxTextureSize);
}
#endif
// Then draw a column with no bleeding but with tiling and filtering
this->drawCase1(canvas, kCol2X, kRow0Y, SkCanvas::kNone_DrawBitmapRectFlag, true);
this->drawCase2(canvas, kCol2X, kRow1Y, SkCanvas::kNone_DrawBitmapRectFlag, true);
this->drawCase3(canvas, kCol2X, kRow2Y, SkCanvas::kNone_DrawBitmapRectFlag, true);
this->drawCase4(canvas, kCol2X, kRow3Y, SkCanvas::kNone_DrawBitmapRectFlag, true);
// Finally draw a column with all three (bleeding, tiling, and filtering)
this->drawCase1(canvas, kCol3X, kRow0Y, SkCanvas::kBleed_DrawBitmapRectFlag, true);
this->drawCase2(canvas, kCol3X, kRow1Y, SkCanvas::kBleed_DrawBitmapRectFlag, true);
this->drawCase3(canvas, kCol3X, kRow2Y, SkCanvas::kBleed_DrawBitmapRectFlag, true);
this->drawCase4(canvas, kCol3X, kRow3Y, SkCanvas::kBleed_DrawBitmapRectFlag, true);
#if SK_SUPPORT_GPU
if (NULL != ctx) {
ctx->setMaxTextureSizeOverride(oldMaxTextureSize);
}
#endif
}
private:
static const int kBlockSize = 90;
static const int kBlockSpacing = 10;
static const int kCol0X = kBlockSpacing;
static const int kCol1X = 2*kBlockSpacing + kBlockSize;
static const int kCol2X = 3*kBlockSpacing + 2*kBlockSize;
static const int kCol3X = 4*kBlockSpacing + 3*kBlockSize;
static const int kWidth = 5*kBlockSpacing + 4*kBlockSize;
static const int kRow0Y = kBlockSpacing;
static const int kRow1Y = 2*kBlockSpacing + kBlockSize;
static const int kRow2Y = 3*kBlockSpacing + 2*kBlockSize;
static const int kRow3Y = 4*kBlockSpacing + 3*kBlockSize;
static const int kHeight = 5*kBlockSpacing + 4*kBlockSize;
static const int kSmallTextureSize = 4;
static const int kMaxTextureSize = 32;
SkBitmap fBitmapSmall;
SkBitmap fBitmapBig;
typedef GM INHERITED;
};
DEF_GM( return new BleedGM(); )
|
