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Unified Diff: src/core/SkPaint.cpp

Issue 158913005: Merge tomhudson and mtklein SkPaint shrinking approaches. (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Don't unref typeface. Created 6 years, 10 months ago
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Index: src/core/SkPaint.cpp
diff --git a/src/core/SkPaint.cpp b/src/core/SkPaint.cpp
index c3f217cefc60e5501e08a88755b5f537dbcb956c..9191ce00673d78eb39b429e0a0448b4f349a2de7 100644
--- a/src/core/SkPaint.cpp
+++ b/src/core/SkPaint.cpp
@@ -35,6 +35,26 @@
#include "SkTypeface.h"
#include "SkXfermode.h"
+enum {
+ kColor_DirtyBit = 1 << 0,
+ kBitfields_DirtyBit = 1 << 1,
+ kTextSize_DirtyBit = 1 << 2,
+ kTextScaleX_DirtyBit = 1 << 3,
+ kTextSkewX_DirtyBit = 1 << 4,
+ kStrokeWidth_DirtyBit = 1 << 5,
+ kStrokeMiter_DirtyBit = 1 << 6,
+ kPathEffect_DirtyBit = 1 << 7,
+ kShader_DirtyBit = 1 << 8,
+ kXfermode_DirtyBit = 1 << 9,
+ kMaskFilter_DirtyBit = 1 << 10,
+ kColorFilter_DirtyBit = 1 << 11,
+ kRasterizer_DirtyBit = 1 << 12,
+ kLooper_DirtyBit = 1 << 13,
+ kImageFilter_DirtyBit = 1 << 14,
+ kTypeface_DirtyBit = 1 << 15,
+ kAnnotation_DirtyBit = 1 << 16,
+ kPaintOptionsAndroid_DirtyBit = 1 << 17,
+};
// define this to get a printf for out-of-range parameter in setters
// e.g. setTextSize(-1)
@@ -55,8 +75,8 @@ SkPaint::SkPaint() {
sk_bzero(this, sizeof(*this));
#if 0 // not needed with the bzero call above
- fTypeface = NULL;
- fTextSkewX = 0;
+ fTypeface = NULL;
+ fTextSkewX = 0;
fPathEffect = NULL;
fShader = NULL;
fXfermode = NULL;
@@ -66,7 +86,8 @@ SkPaint::SkPaint() {
fLooper = NULL;
fImageFilter = NULL;
fAnnotation = NULL;
- fWidth = 0;
+ fWidth = 0;
+ fDirtyBits = 0;
#endif
fTextSize = SkPaintDefaults_TextSize;
@@ -198,6 +219,7 @@ void SkPaint::setPaintOptionsAndroid(const SkPaintOptionsAndroid& options) {
if (options != fPaintOptionsAndroid) {
fPaintOptionsAndroid = options;
GEN_ID_INC;
+ fDirtyBits |= kPaintOptionsAndroid_DirtyBit;
}
}
#endif
@@ -228,11 +250,13 @@ void SkPaint::setFilterLevel(FilterLevel level) {
void SkPaint::setHinting(Hinting hintingLevel) {
GEN_ID_INC_EVAL((unsigned) hintingLevel != fHinting);
fHinting = hintingLevel;
+ fDirtyBits |= kBitfields_DirtyBit;
}
void SkPaint::setFlags(uint32_t flags) {
GEN_ID_INC_EVAL(fFlags != flags);
fFlags = flags;
+ fDirtyBits |= kBitfields_DirtyBit;
}
void SkPaint::setAntiAlias(bool doAA) {
@@ -287,6 +311,7 @@ void SkPaint::setStyle(Style style) {
if ((unsigned)style < kStyleCount) {
GEN_ID_INC_EVAL((unsigned)style != fStyle);
fStyle = style;
+ fDirtyBits |= kBitfields_DirtyBit;
} else {
#ifdef SK_REPORT_API_RANGE_CHECK
SkDebugf("SkPaint::setStyle(%d) out of range\n", style);
@@ -297,6 +322,7 @@ void SkPaint::setStyle(Style style) {
void SkPaint::setColor(SkColor color) {
GEN_ID_INC_EVAL(color != fColor);
fColor = color;
+ fDirtyBits |= kColor_DirtyBit;
}
void SkPaint::setAlpha(U8CPU a) {
@@ -312,6 +338,7 @@ void SkPaint::setStrokeWidth(SkScalar width) {
if (width >= 0) {
GEN_ID_INC_EVAL(width != fWidth);
fWidth = width;
+ fDirtyBits |= kStrokeWidth_DirtyBit;
} else {
#ifdef SK_REPORT_API_RANGE_CHECK
SkDebugf("SkPaint::setStrokeWidth() called with negative value\n");
@@ -323,6 +350,7 @@ void SkPaint::setStrokeMiter(SkScalar limit) {
if (limit >= 0) {
GEN_ID_INC_EVAL(limit != fMiterLimit);
fMiterLimit = limit;
+ fDirtyBits |= kStrokeMiter_DirtyBit;
} else {
#ifdef SK_REPORT_API_RANGE_CHECK
SkDebugf("SkPaint::setStrokeMiter() called with negative value\n");
@@ -334,6 +362,7 @@ void SkPaint::setStrokeCap(Cap ct) {
if ((unsigned)ct < kCapCount) {
GEN_ID_INC_EVAL((unsigned)ct != fCapType);
fCapType = SkToU8(ct);
+ fDirtyBits |= kBitfields_DirtyBit;
} else {
#ifdef SK_REPORT_API_RANGE_CHECK
SkDebugf("SkPaint::setStrokeCap(%d) out of range\n", ct);
@@ -345,6 +374,7 @@ void SkPaint::setStrokeJoin(Join jt) {
if ((unsigned)jt < kJoinCount) {
GEN_ID_INC_EVAL((unsigned)jt != fJoinType);
fJoinType = SkToU8(jt);
+ fDirtyBits |= kBitfields_DirtyBit;
} else {
#ifdef SK_REPORT_API_RANGE_CHECK
SkDebugf("SkPaint::setStrokeJoin(%d) out of range\n", jt);
@@ -358,6 +388,7 @@ void SkPaint::setTextAlign(Align align) {
if ((unsigned)align < kAlignCount) {
GEN_ID_INC_EVAL((unsigned)align != fTextAlign);
fTextAlign = SkToU8(align);
+ fDirtyBits |= kBitfields_DirtyBit;
} else {
#ifdef SK_REPORT_API_RANGE_CHECK
SkDebugf("SkPaint::setTextAlign(%d) out of range\n", align);
@@ -369,6 +400,7 @@ void SkPaint::setTextSize(SkScalar ts) {
if (ts >= 0) {
GEN_ID_INC_EVAL(ts != fTextSize);
fTextSize = ts;
+ fDirtyBits |= kTextSize_DirtyBit;
} else {
#ifdef SK_REPORT_API_RANGE_CHECK
SkDebugf("SkPaint::setTextSize() called with negative value\n");
@@ -379,17 +411,20 @@ void SkPaint::setTextSize(SkScalar ts) {
void SkPaint::setTextScaleX(SkScalar scaleX) {
GEN_ID_INC_EVAL(scaleX != fTextScaleX);
fTextScaleX = scaleX;
+ fDirtyBits |= kTextScaleX_DirtyBit;
}
void SkPaint::setTextSkewX(SkScalar skewX) {
GEN_ID_INC_EVAL(skewX != fTextSkewX);
fTextSkewX = skewX;
+ fDirtyBits |= kTextSkewX_DirtyBit;
}
void SkPaint::setTextEncoding(TextEncoding encoding) {
if ((unsigned)encoding <= kGlyphID_TextEncoding) {
GEN_ID_INC_EVAL((unsigned)encoding != fTextEncoding);
fTextEncoding = encoding;
+ fDirtyBits |= kBitfields_DirtyBit;
} else {
#ifdef SK_REPORT_API_RANGE_CHECK
SkDebugf("SkPaint::setTextEncoding(%d) out of range\n", encoding);
@@ -399,33 +434,43 @@ void SkPaint::setTextEncoding(TextEncoding encoding) {
///////////////////////////////////////////////////////////////////////////////
+// Returns dst with the given bitmask enabled or disabled, depending on value.
+inline static uint32_t set_mask(uint32_t dst, uint32_t bitmask, bool value) {
+ return value ? (dst | bitmask) : (dst & ~bitmask);
+}
+
SkTypeface* SkPaint::setTypeface(SkTypeface* font) {
SkRefCnt_SafeAssign(fTypeface, font);
GEN_ID_INC;
+ fDirtyBits = set_mask(fDirtyBits, kTypeface_DirtyBit, font != NULL);
return font;
}
SkRasterizer* SkPaint::setRasterizer(SkRasterizer* r) {
SkRefCnt_SafeAssign(fRasterizer, r);
GEN_ID_INC;
+ fDirtyBits = set_mask(fDirtyBits, kRasterizer_DirtyBit, r != NULL);
return r;
}
SkDrawLooper* SkPaint::setLooper(SkDrawLooper* looper) {
SkRefCnt_SafeAssign(fLooper, looper);
GEN_ID_INC;
+ fDirtyBits = set_mask(fDirtyBits, kLooper_DirtyBit, looper != NULL);
return looper;
}
SkImageFilter* SkPaint::setImageFilter(SkImageFilter* imageFilter) {
SkRefCnt_SafeAssign(fImageFilter, imageFilter);
GEN_ID_INC;
+ fDirtyBits = set_mask(fDirtyBits, kImageFilter_DirtyBit, imageFilter != NULL);
return imageFilter;
}
SkAnnotation* SkPaint::setAnnotation(SkAnnotation* annotation) {
SkRefCnt_SafeAssign(fAnnotation, annotation);
GEN_ID_INC;
+ fDirtyBits = set_mask(fDirtyBits, kAnnotation_DirtyBit, annotation != NULL);
return annotation;
}
@@ -2149,18 +2194,21 @@ void SkPaint::unflatten(SkReadBuffer& buffer) {
SkShader* SkPaint::setShader(SkShader* shader) {
GEN_ID_INC_EVAL(shader != fShader);
SkRefCnt_SafeAssign(fShader, shader);
+ fDirtyBits = set_mask(fDirtyBits, kShader_DirtyBit, shader != NULL);
return shader;
}
SkColorFilter* SkPaint::setColorFilter(SkColorFilter* filter) {
GEN_ID_INC_EVAL(filter != fColorFilter);
SkRefCnt_SafeAssign(fColorFilter, filter);
+ fDirtyBits = set_mask(fDirtyBits, kColorFilter_DirtyBit, filter != NULL);
return filter;
}
SkXfermode* SkPaint::setXfermode(SkXfermode* mode) {
GEN_ID_INC_EVAL(mode != fXfermode);
SkRefCnt_SafeAssign(fXfermode, mode);
+ fDirtyBits = set_mask(fDirtyBits, kXfermode_DirtyBit, mode != NULL);
return mode;
}
@@ -2168,18 +2216,21 @@ SkXfermode* SkPaint::setXfermodeMode(SkXfermode::Mode mode) {
SkSafeUnref(fXfermode);
fXfermode = SkXfermode::Create(mode);
GEN_ID_INC;
+ fDirtyBits = set_mask(fDirtyBits, kXfermode_DirtyBit, fXfermode != NULL);
return fXfermode;
}
SkPathEffect* SkPaint::setPathEffect(SkPathEffect* effect) {
GEN_ID_INC_EVAL(effect != fPathEffect);
SkRefCnt_SafeAssign(fPathEffect, effect);
+ fDirtyBits = set_mask(fDirtyBits, kPathEffect_DirtyBit, effect != NULL);
return effect;
}
SkMaskFilter* SkPaint::setMaskFilter(SkMaskFilter* filter) {
GEN_ID_INC_EVAL(filter != fMaskFilter);
SkRefCnt_SafeAssign(fMaskFilter, filter);
+ fDirtyBits = set_mask(fDirtyBits, kMaskFilter_DirtyBit, filter != NULL);
return filter;
}
@@ -2550,3 +2601,97 @@ bool SkPaint::nothingToDraw() const {
}
return false;
}
+
+void SkPaint::setBitfields(uint32_t bitfields) {
+ fBitfields = bitfields;
+ fDirtyBits |= kBitfields_DirtyBit;
+}
+
+inline static unsigned popcount(uint8_t x) {
+ // As in Hacker's delight, adapted for just 8 bits.
+ x = (x & 0x55) + ((x >> 1) & 0x55); // a b c d w x y z -> a+b c+d w+x y+z
+ x = (x & 0x33) + ((x >> 2) & 0x33); // a+b c+d w+x y+z -> a+b+c+d w+x+y+z
+ x = (x & 0x0F) + ((x >> 4) & 0x0F); // a+b+c+d w+x+y+z -> a+b+c+d+w+x+y+z
+ return x;
+}
+
+void SkPaint::FlatteningTraits::Flatten(SkWriteBuffer& buffer, const SkPaint& paint) {
+ const uint32_t dirty = paint.fDirtyBits;
+
+ // Each of the low 7 dirty bits corresponds to a 4-byte flat value, plus one for the dirty bits.
+ const size_t flatBytes = 4 * (popcount(dirty & 127) + 1);
+ SkASSERT(flatBytes <= 32);
+ uint32_t* u32 = buffer.reserve(flatBytes);
+ *u32++ = dirty;
+ if (dirty == 0) {
+ return;
+ }
+
+#define F(dst, field) if (dirty & k##field##_DirtyBit) *dst++ = paint.get##field()
+ F(u32, Color);
+ F(u32, Bitfields);
+ SkScalar* f32 = reinterpret_cast<SkScalar*>(u32);
+ F(f32, TextSize);
+ F(f32, TextScaleX);
+ F(f32, TextSkewX);
+ F(f32, StrokeWidth);
+ F(f32, StrokeMiter);
+#undef F
+#define F(field) if (dirty & k##field##_DirtyBit) buffer.writeFlattenable(paint.get##field())
+ F(PathEffect);
+ F(Shader);
+ F(Xfermode);
+ F(MaskFilter);
+ F(ColorFilter);
+ F(Rasterizer);
+ F(Looper);
+ F(ImageFilter);
+#undef F
+ if (dirty & kTypeface_DirtyBit) buffer.writeTypeface(paint.getTypeface());
+ if (dirty & kAnnotation_DirtyBit) paint.getAnnotation()->writeToBuffer(buffer);
+#ifdef SK_BUILD_FOR_ANDROID
+ if (dirty & kPaintOptionsAndroid_DirtyBit) paint.getPaintOptionsAndroid().flatten(buffer);
+#endif
+}
+
+void SkPaint::FlatteningTraits::Unflatten(SkReadBuffer& buffer, SkPaint* paint) {
+ const uint32_t dirty = buffer.readUInt();
+ if (dirty == 0) {
+ return;
+ }
+#define F(field, reader) if (dirty & k##field##_DirtyBit) paint->set##field(buffer.reader())
+// Same function, except it unrefs the object newly set on the paint:
+#define F_UNREF(field, reader) \
+ if (dirty & k##field##_DirtyBit) \
+ paint->set##field(buffer.reader())->unref()
+
+ F(Color, readUInt);
+ F(Bitfields, readUInt);
+ F(TextSize, readScalar);
+ F(TextScaleX, readScalar);
+ F(TextSkewX, readScalar);
+ F(StrokeWidth, readScalar);
+ F(StrokeMiter, readScalar);
+ F_UNREF(PathEffect, readPathEffect);
+ F_UNREF(Shader, readShader);
+ F_UNREF(Xfermode, readXfermode);
+ F_UNREF(MaskFilter, readMaskFilter);
+ F_UNREF(ColorFilter, readColorFilter);
+ F_UNREF(Rasterizer, readRasterizer);
+ F_UNREF(Looper, readDrawLooper);
+ F_UNREF(ImageFilter, readImageFilter);
+ F(Typeface, readTypeface);
+#undef F
+#undef F_UNREF
+ if (dirty & kAnnotation_DirtyBit) {
+ paint->setAnnotation(SkNEW_ARGS(SkAnnotation, (buffer)))->unref();
+ }
+#ifdef SK_BUILD_FOR_ANDROID
+ if (dirty & kPaintOptionsAndroid_DirtyBit) {
+ SkPaintOptionsAndroid options;
+ options.unflatten(buffer);
+ paint->setPaintOptionsAndroid(options);
+ }
+#endif
+ SkASSERT(dirty == paint->fDirtyBits);
+}
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