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AAXfermodesGM Class Reference
Inheritance diagram for AAXfermodesGM:
skiagm::GM

Public Member Functions

 AAXfermodesGM ()
 
- Public Member Functions inherited from skiagm::GM
 GM (SkColor backgroundColor=SK_ColorWHITE)
 
virtual ~GM ()
 
void setMode (Mode mode)
 
Mode getMode () const
 
DrawResult gpuSetup (SkCanvas *, SkString *errorMsg, GraphiteTestContext *=nullptr)
 
void gpuTeardown ()
 
void onceBeforeDraw ()
 
DrawResult draw (SkCanvas *canvas)
 
DrawResult draw (SkCanvas *, SkString *errorMsg)
 
void drawBackground (SkCanvas *)
 
DrawResult drawContent (SkCanvas *canvas)
 
DrawResult drawContent (SkCanvas *, SkString *errorMsg)
 
virtual SkISize getISize ()=0
 
virtual SkString getName () const =0
 
virtual bool runAsBench () const
 
SkScalar width ()
 
SkScalar height ()
 
SkColor getBGColor () const
 
void setBGColor (SkColor)
 
void drawSizeBounds (SkCanvas *, SkColor)
 
bool animate (double)
 
virtual bool onChar (SkUnichar)
 
bool getControls (SkMetaData *controls)
 
void setControls (const SkMetaData &controls)
 
virtual void modifyGrContextOptions (GrContextOptions *)
 
virtual void modifyGraphiteContextOptions (skgpu::graphite::ContextOptions *) const
 
virtual bool isBazelOnly () const
 
virtual std::map< std::string, std::string > getGoldKeys () const
 

Protected Types

enum  DrawingPass { kCheckerboard_Pass , kBackground_Pass , kShape_Pass }
 

Protected Member Functions

SkString getName () const override
 
SkISize getISize () override
 
void onOnceBeforeDraw () override
 
void draw_pass (SkCanvas *canvas, DrawingPass drawingPass)
 
void onDraw (SkCanvas *canvas) override
 
void drawModeName (SkCanvas *canvas, SkBlendMode mode)
 
void setupShapePaint (SkCanvas *canvas, SkColor color, SkBlendMode mode, SkPaint *paint)
 
void drawShape (SkCanvas *canvas, Shape shape, const SkPaint &paint, SkBlendMode mode)
 
- Protected Member Functions inherited from skiagm::GM
virtual DrawResult onGpuSetup (SkCanvas *, SkString *, GraphiteTestContext *)
 
virtual void onGpuTeardown ()
 
virtual void onOnceBeforeDraw ()
 
virtual DrawResult onDraw (SkCanvas *, SkString *errorMsg)
 
virtual void onDraw (SkCanvas *)
 
virtual bool onAnimate (double)
 
virtual bool onGetControls (SkMetaData *)
 
virtual void onSetControls (const SkMetaData &)
 
GraphiteTestContext * graphiteTestContext () const
 

Additional Inherited Members

- Public Types inherited from skiagm::GM
enum  Mode { kGM_Mode , kSample_Mode , kBench_Mode }
 
using DrawResult = skiagm::DrawResult
 
using GraphiteTestContext = skiatest::graphite::GraphiteTestContext
 
- Static Public Attributes inherited from skiagm::GM
static constexpr char kErrorMsg_DrawSkippedGpuOnly []
 

Detailed Description

Verifies AA works properly on all Xfermodes, including arithmetic, with both opaque and unknown src colors.

Definition at line 56 of file aaxfermodes.cpp.

Member Enumeration Documentation

◆ DrawingPass

enum AAXfermodesGM::DrawingPass
protected
Enumerator
kCheckerboard_Pass 
kBackground_Pass 
kShape_Pass 

Definition at line 61 of file aaxfermodes.cpp.

61 {
62 kCheckerboard_Pass,
63 kBackground_Pass,
64 kShape_Pass
65 };

Constructor & Destructor Documentation

◆ AAXfermodesGM()

AAXfermodesGM::AAXfermodesGM ( )
inline

Definition at line 58 of file aaxfermodes.cpp.

58{}

Member Function Documentation

◆ draw_pass()

void AAXfermodesGM::draw_pass ( SkCanvas *  canvas,
DrawingPass  drawingPass 
)
inlineprotected

Definition at line 102 of file aaxfermodes.cpp.

102 {
103 SkRect clipRect =
104 { -kShapeSize*11/16, -kShapeSize*11/16, kShapeSize*11/16, kShapeSize*11/16 };
105
106 canvas->save();
107 if (kCheckerboard_Pass == drawingPass) {
108 canvas->translate(kMargin, kMargin);
109 }
110 canvas->translate(0, kTitleSpacing);
111
112 for (size_t xfermodeSet = 0; xfermodeSet < 2; xfermodeSet++) {
113 size_t firstMode = ((size_t)SkBlendMode::kLastCoeffMode + 1) * xfermodeSet;
114 canvas->save();
115
116 if (kShape_Pass == drawingPass) {
117 SkTextUtils::DrawString(canvas, "Src Unknown",
118 kLabelSpacing + kShapeTypeSpacing * 1.5f + kShapeSpacing / 2,
119 kSubtitleSpacing / 2 + fLabelFont.getSize() / 3, fLabelFont, SkPaint(),
120 SkTextUtils::kCenter_Align);
121 SkTextUtils::DrawString(canvas, "Src Opaque",
122 kLabelSpacing + kShapeTypeSpacing * 1.5f + kShapeSpacing / 2 +
123 kPaintSpacing, kSubtitleSpacing / 2 + fLabelFont.getSize() / 3,
124 fLabelFont, SkPaint(), SkTextUtils::kCenter_Align);
125 }
126
127 canvas->translate(0, kSubtitleSpacing + kShapeSpacing/2);
128
129 for (size_t m = 0; m <= (size_t)SkBlendMode::kLastCoeffMode; m++) {
130 if (firstMode + m > (size_t)SkBlendMode::kLastMode) {
131 break;
132 }
133 SkBlendMode mode = static_cast<SkBlendMode>(firstMode + m);
134 canvas->save();
135
136 if (kShape_Pass == drawingPass) {
137 this->drawModeName(canvas, mode);
138 }
139 canvas->translate(kLabelSpacing + kShapeSpacing/2, 0);
140
141 for (size_t colorIdx = 0; colorIdx < std::size(kShapeColors); colorIdx++) {
142 SkPaint paint;
143 this->setupShapePaint(canvas, kShapeColors[colorIdx], mode, &paint);
144 SkASSERT(colorIdx == 0 || 255 == paint.getAlpha());
145 canvas->save();
146
147 for (size_t shapeIdx = 0; shapeIdx <= kLast_Shape; shapeIdx++) {
148 if (kShape_Pass != drawingPass) {
149 canvas->save();
150 canvas->clipRect(clipRect);
151 if (kCheckerboard_Pass == drawingPass) {
152 ToolUtils::draw_checkerboard(canvas, 0xffffffff, 0xffc6c3c6, 10);
153 } else {
154 SkASSERT(kBackground_Pass == drawingPass);
155 canvas->drawColor(kBGColor, SkBlendMode::kSrc);
156 }
157 canvas->restore();
158 } else {
159 this->drawShape(canvas, static_cast<Shape>(shapeIdx), paint, mode);
160 }
161 canvas->translate(kShapeTypeSpacing, 0);
162 }
163
164 canvas->restore();
165 canvas->translate(kPaintSpacing, 0);
166 }
167
168 canvas->restore();
169 canvas->translate(0, kShapeSpacing);
170 }
171
172 canvas->restore();
173 canvas->translate(kXfermodeTypeSpacing, 0);
174 }
175
176 canvas->restore();
177 }
SkASSERT
#define SkASSERT(cond)
Definition: SkAssert.h:116
SkBlendMode
SkBlendMode
Definition: SkBlendMode.h:38
SkBlendMode::kLastCoeffMode
@ kLastCoeffMode
last porter duff blend mode
SkBlendMode::kLastMode
@ kLastMode
last valid value
kShapeColors
constexpr SkColor kShapeColors[2]
Definition: aaxfermodes.cpp:38
kShapeSpacing
constexpr int kShapeSpacing
Definition: aaxfermodes.cpp:27
kXfermodeTypeSpacing
constexpr int kXfermodeTypeSpacing
Definition: aaxfermodes.cpp:32
Shape
Shape
Definition: aaxfermodes.cpp:43
kLast_Shape
@ kLast_Shape
Definition: aaxfermodes.cpp:49
kTitleSpacing
constexpr int kTitleSpacing
Definition: aaxfermodes.cpp:33
kShapeSize
constexpr int kShapeSize
Definition: aaxfermodes.cpp:26
kSubtitleSpacing
constexpr int kSubtitleSpacing
Definition: aaxfermodes.cpp:34
kShapeTypeSpacing
constexpr int kShapeTypeSpacing
Definition: aaxfermodes.cpp:28
kPaintSpacing
constexpr int kPaintSpacing
Definition: aaxfermodes.cpp:29
kLabelSpacing
constexpr int kLabelSpacing
Definition: aaxfermodes.cpp:30
kMargin
constexpr int kMargin
Definition: aaxfermodes.cpp:31
kBGColor
constexpr SkColor kBGColor
Definition: aaxfermodes.cpp:36
AAXfermodesGM::drawShape
void drawShape(SkCanvas *canvas, Shape shape, const SkPaint &paint, SkBlendMode mode)
Definition: aaxfermodes.cpp:238
AAXfermodesGM::setupShapePaint
void setupShapePaint(SkCanvas *canvas, SkColor color, SkBlendMode mode, SkPaint *paint)
Definition: aaxfermodes.cpp:209
AAXfermodesGM::drawModeName
void drawModeName(SkCanvas *canvas, SkBlendMode mode)
Definition: aaxfermodes.cpp:202
SkCanvas::clipRect
void clipRect(const SkRect &rect, SkClipOp op, bool doAntiAlias)
Definition: SkCanvas.cpp:1361
SkCanvas::restore
void restore()
Definition: SkCanvas.cpp:461
SkCanvas::translate
void translate(SkScalar dx, SkScalar dy)
Definition: SkCanvas.cpp:1278
SkCanvas::drawColor
void drawColor(SkColor color, SkBlendMode mode=SkBlendMode::kSrcOver)
Definition: SkCanvas.h:1182
SkCanvas::save
int save()
Definition: SkCanvas.cpp:447
SkFont::getSize
SkScalar getSize() const
Definition: SkFont.h:217
SkTextUtils::DrawString
static void DrawString(SkCanvas *canvas, const char text[], SkScalar x, SkScalar y, const SkFont &font, const SkPaint &paint, Align align=kLeft_Align)
Definition: SkTextUtils.h:34
paint
const Paint & paint
Definition: color_source.cc:38
SkRecords::clipRect
clipRect(r.rect, r.opAA.op(), r.opAA.aa())) template<> void Draw
Definition: SkRecordDraw.cpp:125
ToolUtils::draw_checkerboard
void draw_checkerboard(SkCanvas *canvas, SkColor c1, SkColor c2, int size)
Definition: ToolUtils.cpp:174
dart_profiler_symbols.m
m
Definition: dart_profiler_symbols.py:64
flutter::mode
it will be possible to load the file into Perfetto s trace viewer disable asset Prevents usage of any non test fonts unless they were explicitly Loaded via prefetched default font Indicates whether the embedding started a prefetch of the default font manager before creating the engine run In non interactive mode
Definition: switches.h:228
flutter::size
it will be possible to load the file into Perfetto s trace viewer disable asset Prevents usage of any non test fonts unless they were explicitly Loaded via prefetched default font Indicates whether the embedding started a prefetch of the default font manager before creating the engine run In non interactive keep the shell running after the Dart script has completed enable serial On low power devices with low core running concurrent GC tasks on threads can cause them to contend with the UI thread which could potentially lead to jank This option turns off all concurrent GC activities domain network JSON encoded network policy per domain This overrides the DisallowInsecureConnections switch Embedder can specify whether to allow or disallow insecure connections at a domain level old gen heap size
Definition: switches.h:259

◆ drawModeName()

void AAXfermodesGM::drawModeName ( SkCanvas *  canvas,
SkBlendMode  mode 
)
inlineprotected

Definition at line 202 of file aaxfermodes.cpp.

202 {
203 const char* modeName = SkBlendMode_Name(mode);
204 SkTextUtils::DrawString(canvas, modeName, kLabelSpacing - kShapeSize / 4,
205 fLabelFont.getSize() / 4, fLabelFont, SkPaint(),
206 SkTextUtils::kRight_Align);
207 }
SkBlendMode_Name
SK_API const char * SkBlendMode_Name(SkBlendMode blendMode)
Definition: SkBlendMode.cpp:167

◆ drawShape()

void AAXfermodesGM::drawShape ( SkCanvas *  canvas,
Shape  shape,
const SkPaint &  paint,
SkBlendMode  mode 
)
inlineprotected

Definition at line 238 of file aaxfermodes.cpp.

238 {
239 SkASSERT(mode <= SkBlendMode::kLastMode);
240 SkPaint shapePaint(paint);
241 shapePaint.setAntiAlias(kSquare_Shape != shape);
242 shapePaint.setBlendMode(mode);
243
244 switch (shape) {
245 case kSquare_Shape:
246 canvas->drawRect({ -kShapeSize/2, -kShapeSize/2, kShapeSize/2, kShapeSize/2 },
247 shapePaint);
248 break;
249
250 case kDiamond_Shape:
251 canvas->save();
252 canvas->rotate(45);
253 canvas->drawRect({ -kShapeSize/2, -kShapeSize/2, kShapeSize/2, kShapeSize/2 },
254 shapePaint);
255 canvas->restore();
256 break;
257
258 case kOval_Shape:
259 canvas->save();
260 canvas->rotate(static_cast<SkScalar>((511 * (int)mode + 257) % 360));
261 canvas->drawPath(fOval, shapePaint);
262 canvas->restore();
263 break;
264
265 case kConcave_Shape:
266 canvas->drawPath(fConcave, shapePaint);
267 break;
268
269 default:
270 SK_ABORT("Invalid shape.");
271 }
272 }
SK_ABORT
#define SK_ABORT(message,...)
Definition: SkAssert.h:70
kSquare_Shape
@ kSquare_Shape
Definition: aaxfermodes.cpp:44
kOval_Shape
@ kOval_Shape
Definition: aaxfermodes.cpp:46
kConcave_Shape
@ kConcave_Shape
Definition: aaxfermodes.cpp:47
kDiamond_Shape
@ kDiamond_Shape
Definition: aaxfermodes.cpp:45
SkCanvas::drawRect
void drawRect(const SkRect &rect, const SkPaint &paint)
Definition: SkCanvas.cpp:1673
SkCanvas::rotate
void rotate(SkScalar degrees)
Definition: SkCanvas.cpp:1300
SkCanvas::drawPath
void drawPath(const SkPath &path, const SkPaint &paint)
Definition: SkCanvas.cpp:1747
SkScalar
float SkScalar
Definition: extension.cpp:12

◆ getISize()

SkISize AAXfermodesGM::getISize ( )
inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 69 of file aaxfermodes.cpp.

69 {
70 return SkISize::Make(2 * kMargin + 2 * kXfermodeTypeSpacing -
71 (kXfermodeTypeSpacing - (kLabelSpacing + 2 * kPaintSpacing)),
72 2 * kMargin + kTitleSpacing + kSubtitleSpacing +
73 (1 + (int)SkBlendMode::kLastCoeffMode) * kShapeSpacing);
74 }
SkISize::Make
static constexpr SkISize Make(int32_t w, int32_t h)
Definition: SkSize.h:20

◆ getName()

SkString AAXfermodesGM::getName ( ) const
inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 67 of file aaxfermodes.cpp.

67{ return SkString("aaxfermodes"); }

◆ onDraw()

void AAXfermodesGM::onDraw ( SkCanvas *  canvas)
inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 179 of file aaxfermodes.cpp.

179 {
180 draw_pass(canvas, kCheckerboard_Pass);
181 canvas->saveLayer(nullptr, nullptr);
182
183 canvas->translate(kMargin, kMargin);
184 draw_pass(canvas, kBackground_Pass);
185
186 SkFont titleFont(fLabelFont);
187 titleFont.setSize(9 * titleFont.getSize() / 8);
188 titleFont.setEmbolden(true);
189 SkTextUtils::DrawString(canvas, "Porter Duff",
190 kLabelSpacing + 4 * kShapeTypeSpacing,
191 kTitleSpacing / 2 + titleFont.getSize() / 3, titleFont, SkPaint(),
192 SkTextUtils::kCenter_Align);
193 SkTextUtils::DrawString(canvas, "Advanced",
194 kXfermodeTypeSpacing + kLabelSpacing + 4 * kShapeTypeSpacing,
195 kTitleSpacing / 2 + titleFont.getSize() / 3, titleFont, SkPaint(),
196 SkTextUtils::kCenter_Align);
197
198 draw_pass(canvas, kShape_Pass);
199 canvas->restore();
200 }
AAXfermodesGM::draw_pass
void draw_pass(SkCanvas *canvas, DrawingPass drawingPass)
Definition: aaxfermodes.cpp:102
SkCanvas::saveLayer
int saveLayer(const SkRect *bounds, const SkPaint *paint)
Definition: SkCanvas.cpp:496
SkFont
Definition: SkFont.h:35

◆ onOnceBeforeDraw()

void AAXfermodesGM::onOnceBeforeDraw ( )
inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 76 of file aaxfermodes.cpp.

76 {
77 fLabelFont.setTypeface(ToolUtils::DefaultPortableTypeface());
78 fLabelFont.setSize(5 * kShapeSize/8);
79 fLabelFont.setSubpixel(true);
80
81 constexpr SkScalar radius = -1.4f * kShapeSize/2;
82 SkPoint pts[4] = {
83 {-radius, 0},
84 {0, -1.33f * radius},
85 {radius, 0},
86 {0, 1.33f * radius}
87 };
88 fOval = SkPathBuilder().moveTo(pts[0])
89 .quadTo(pts[1], pts[2])
90 .quadTo(pts[3], pts[0])
91 .detach();
92
93 fConcave = SkPathBuilder().moveTo(-radius, 0)
94 .quadTo(0, 0, 0, -radius)
95 .quadTo(0, 0, radius, 0)
96 .quadTo(0, 0, 0, radius)
97 .quadTo(0, 0, -radius, 0)
98 .close()
99 .detach();
100 }
SkFont::setSubpixel
void setSubpixel(bool subpixel)
Definition: SkFont.cpp:109
SkFont::setTypeface
void setTypeface(sk_sp< SkTypeface > tf)
Definition: SkFont.cpp:90
SkFont::setSize
void setSize(SkScalar textSize)
Definition: SkFont.cpp:129
SkPathBuilder::close
SkPathBuilder & close()
Definition: SkPathBuilder.cpp:155
SkPathBuilder::moveTo
SkPathBuilder & moveTo(SkPoint pt)
Definition: SkPathBuilder.cpp:95
SkPathBuilder::quadTo
SkPathBuilder & quadTo(SkPoint pt1, SkPoint pt2)
Definition: SkPathBuilder.cpp:117
ToolUtils::DefaultPortableTypeface
sk_sp< SkTypeface > DefaultPortableTypeface()
Definition: FontToolUtils.cpp:195

◆ setupShapePaint()

void AAXfermodesGM::setupShapePaint ( SkCanvas *  canvas,
SkColor  color,
SkBlendMode  mode,
SkPaint *  paint 
)
inlineprotected

Definition at line 209 of file aaxfermodes.cpp.

209 {
210 paint->setColor(color);
211
212 if (mode == SkBlendMode::kPlus) {
213 // Check for overflow, otherwise we might get confusing AA artifacts.
214 int maxSum = std::max(std::max(SkColorGetA(kBGColor) + SkColorGetA(color),
215 SkColorGetR(kBGColor) + SkColorGetR(color)),
216 std::max(SkColorGetG(kBGColor) + SkColorGetG(color),
217 SkColorGetB(kBGColor) + SkColorGetB(color)));
218
219 if (maxSum > 255) {
220 SkPaint dimPaint;
221 dimPaint.setAntiAlias(false);
222 dimPaint.setBlendMode(SkBlendMode::kDstIn);
223 if (255 != paint->getAlpha()) {
224 // Dim the src and dst colors.
225 dimPaint.setARGB(255 * 255 / maxSum, 0, 0, 0);
226 paint->setAlpha(255 * paint->getAlpha() / maxSum);
227 } else {
228 // Just clear the dst, we need to preserve the paint's opacity.
229 dimPaint.setARGB(0, 0, 0, 0);
230 }
231 canvas->drawRect({ -kShapeSpacing/2, -kShapeSpacing/2,
232 kShapeSpacing/2 + 3 * kShapeTypeSpacing, kShapeSpacing/2 },
233 dimPaint);
234 }
235 }
236 }
SkBlendMode::kPlus
@ kPlus
r = min(s + d, 1)
SkBlendMode::kDstIn
@ kDstIn
r = d * sa
SkColorGetR
#define SkColorGetR(color)
Definition: SkColor.h:65
SkColorGetG
#define SkColorGetG(color)
Definition: SkColor.h:69
SkColorGetA
#define SkColorGetA(color)
Definition: SkColor.h:61
SkColorGetB
#define SkColorGetB(color)
Definition: SkColor.h:73
SkPaint::setAntiAlias
void setAntiAlias(bool aa)
Definition: SkPaint.h:170
SkPaint::setARGB
void setARGB(U8CPU a, U8CPU r, U8CPU g, U8CPU b)
Definition: SkPaint.cpp:134
SkPaint::setBlendMode
void setBlendMode(SkBlendMode mode)
Definition: SkPaint.cpp:151
color
DlColor color
Definition: dl_golden_blur_unittests.cc:23
max
static float max(float r, float g, float b)
Definition: hsl.cpp:49
The documentation for this class was generated from the following file:
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