mozilla
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moz-skia
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moz-skia/bench/GradientBench.cpp

286 строки
9.3 KiB
C++
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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBenchmark.h"
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkColorPriv.h"
#include "SkGradientShader.h"
#include "SkPaint.h"
#include "SkShader.h"
#include "SkString.h"
#include "SkUnitMapper.h"
struct GradData {
int fCount;
const SkColor* fColors;
const SkScalar* fPos;
};
static const SkColor gColors[] = {
SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorWHITE, SK_ColorBLACK
};
static const SkScalar gPos0[] = { 0, SK_Scalar1 };
static const SkScalar gPos1[] = { SK_Scalar1/4, SK_Scalar1*3/4 };
static const SkScalar gPos2[] = {
0, SK_Scalar1/8, SK_Scalar1/2, SK_Scalar1*7/8, SK_Scalar1
};
static const GradData gGradData[] = {
{ 2, gColors, NULL },
{ 2, gColors, gPos0 },
{ 2, gColors, gPos1 },
{ 5, gColors, NULL },
{ 5, gColors, gPos2 }
};
/// Ignores scale
static SkShader* MakeLinear(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper,
float scale) {
return SkGradientShader::CreateLinear(pts, data.fColors, data.fPos,
data.fCount, tm, mapper);
}
static SkShader* MakeRadial(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper,
float scale) {
SkPoint center;
center.set(SkScalarAve(pts[0].fX, pts[1].fX),
SkScalarAve(pts[0].fY, pts[1].fY));
return SkGradientShader::CreateRadial(center, center.fX * scale,
data.fColors,
data.fPos, data.fCount, tm, mapper);
}
/// Ignores scale
static SkShader* MakeSweep(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper,
float scale) {
SkPoint center;
center.set(SkScalarAve(pts[0].fX, pts[1].fX),
SkScalarAve(pts[0].fY, pts[1].fY));
return SkGradientShader::CreateSweep(center.fX, center.fY, data.fColors,
data.fPos, data.fCount, mapper);
}
/// Ignores scale
static SkShader* Make2Radial(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper,
float scale) {
SkPoint center0, center1;
center0.set(SkScalarAve(pts[0].fX, pts[1].fX),
SkScalarAve(pts[0].fY, pts[1].fY));
center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5),
SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4));
return SkGradientShader::CreateTwoPointRadial(
center1, (pts[1].fX - pts[0].fX) / 7,
center0, (pts[1].fX - pts[0].fX) / 2,
data.fColors, data.fPos, data.fCount, tm, mapper);
}
/// Ignores scale
static SkShader* MakeConical(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper,
float scale) {
SkPoint center0, center1;
center0.set(SkScalarAve(pts[0].fX, pts[1].fX),
SkScalarAve(pts[0].fY, pts[1].fY));
center1.set(SkScalarInterp(pts[0].fX, pts[1].fX, SkIntToScalar(3)/5),
SkScalarInterp(pts[0].fY, pts[1].fY, SkIntToScalar(1)/4));
return SkGradientShader::CreateTwoPointConical(center1, (pts[1].fX - pts[0].fX) / 7,
center0, (pts[1].fX - pts[0].fX) / 2,
data.fColors, data.fPos, data.fCount, tm, mapper);
}
typedef SkShader* (*GradMaker)(const SkPoint pts[2], const GradData& data,
SkShader::TileMode tm, SkUnitMapper* mapper,
float scale);
static const struct {
GradMaker fMaker;
const char* fName;
int fRepeat;
} gGrads[] = {
{ MakeLinear, "linear", 15 },
{ MakeRadial, "radial1", 10 },
{ MakeSweep, "sweep", 1 },
{ Make2Radial, "radial2", 5 },
{ MakeConical, "conical", 5 },
};
enum GradType { // these must match the order in gGrads
kLinear_GradType,
kRadial_GradType,
kSweep_GradType,
kRadial2_GradType,
kConical_GradType
};
enum GeomType {
kRect_GeomType,
kOval_GeomType
};
static const char* tilemodename(SkShader::TileMode tm) {
switch (tm) {
case SkShader::kClamp_TileMode:
return "clamp";
case SkShader::kRepeat_TileMode:
return "repeat";
case SkShader::kMirror_TileMode:
return "mirror";
default:
SkASSERT(!"unknown tilemode");
return "error";
}
}
static const char* geomtypename(GeomType gt) {
switch (gt) {
case kRect_GeomType:
return "rectangle";
case kOval_GeomType:
return "oval";
default:
SkASSERT(!"unknown geometry type");
return "error";
}
}
///////////////////////////////////////////////////////////////////////////////
class GradientBench : public SkBenchmark {
SkString fName;
SkShader* fShader;
int fCount;
enum {
W = 400,
H = 400,
N = 1
};
public:
GradientBench(void* param, GradType gradType,
SkShader::TileMode tm = SkShader::kClamp_TileMode,
GeomType geomType = kRect_GeomType,
float scale = 1.0f)
: INHERITED(param) {
fName.printf("gradient_%s_%s", gGrads[gradType].fName,
tilemodename(tm));
if (geomType != kRect_GeomType) {
fName.append("_");
fName.append(geomtypename(geomType));
}
const SkPoint pts[2] = {
{ 0, 0 },
{ SkIntToScalar(W), SkIntToScalar(H) }
};
fCount = SkBENCHLOOP(N * gGrads[gradType].fRepeat);
fShader = gGrads[gradType].fMaker(pts, gGradData[0], tm, NULL, scale);
fGeomType = geomType;
}
virtual ~GradientBench() {
fShader->unref();
}
protected:
virtual const char* onGetName() {
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
this->setupPaint(&paint);
paint.setShader(fShader);
SkRect r = { 0, 0, SkIntToScalar(W), SkIntToScalar(H) };
for (int i = 0; i < fCount; i++) {
switch (fGeomType) {
case kRect_GeomType:
canvas->drawRect(r, paint);
break;
case kOval_GeomType:
canvas->drawOval(r, paint);
break;
}
}
}
private:
typedef SkBenchmark INHERITED;
GeomType fGeomType;
};
class Gradient2Bench : public SkBenchmark {
SkString fName;
bool fHasAlpha;
public:
Gradient2Bench(void* param, bool hasAlpha) : INHERITED(param) {
fName.printf("gradient_create_%s", hasAlpha ? "alpha" : "opaque");
fHasAlpha = hasAlpha;
}
protected:
virtual const char* onGetName() {
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
this->setupPaint(&paint);
const SkRect r = { 0, 0, SkIntToScalar(4), SkIntToScalar(4) };
const SkPoint pts[] = {
{ 0, 0 },
{ SkIntToScalar(100), SkIntToScalar(100) },
};
for (int i = 0; i < SkBENCHLOOP(1000); i++) {
const int gray = i % 256;
const int alpha = fHasAlpha ? gray : 0xFF;
SkColor colors[] = {
SK_ColorBLACK,
SkColorSetARGB(alpha, gray, gray, gray),
SK_ColorWHITE };
SkShader* s = SkGradientShader::CreateLinear(pts, colors, NULL,
SK_ARRAY_COUNT(colors),
SkShader::kClamp_TileMode);
paint.setShader(s)->unref();
canvas->drawRect(r, paint);
}
}
private:
typedef SkBenchmark INHERITED;
};
DEF_BENCH( return new GradientBench(p, kLinear_GradType); )
DEF_BENCH( return new GradientBench(p, kLinear_GradType, SkShader::kMirror_TileMode); )
// Draw a radial gradient of radius 1/2 on a rectangle; half the lines should
// be completely pinned, the other half should pe partially pinned
DEF_BENCH( return new GradientBench(p, kRadial_GradType, SkShader::kClamp_TileMode, kRect_GeomType, 0.5f); )
// Draw a radial gradient on a circle of equal size; all the lines should
// hit the unpinned fast path (so long as GradientBench.W == H)
DEF_BENCH( return new GradientBench(p, kRadial_GradType, SkShader::kClamp_TileMode, kOval_GeomType); )
DEF_BENCH( return new GradientBench(p, kRadial_GradType, SkShader::kMirror_TileMode); )
DEF_BENCH( return new GradientBench(p, kSweep_GradType); )
DEF_BENCH( return new GradientBench(p, kRadial2_GradType); )
DEF_BENCH( return new GradientBench(p, kRadial2_GradType, SkShader::kMirror_TileMode); )
DEF_BENCH( return new GradientBench(p, kConical_GradType); )
DEF_BENCH( return new Gradient2Bench(p, false); )
DEF_BENCH( return new Gradient2Bench(p, true); )
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