skia2/gm/imagefiltersscaled.cpp

166 lines
6.4 KiB
C++
Raw Normal View History

/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "sk_tool_utils.h"
#include "SkBlurImageFilter.h"
#include "SkColor.h"
#include "SkDisplacementMapEffect.h"
#include "SkDropShadowImageFilter.h"
#include "SkGradientShader.h"
#include "SkImage.h"
#include "SkImageSource.h"
#include "SkLightingImageFilter.h"
#include "SkMorphologyImageFilter.h"
#include "SkOffsetImageFilter.h"
#include "SkPerlinNoiseShader.h"
#include "SkPoint3.h"
#include "SkRectShaderImageFilter.h"
#include "SkScalar.h"
#include "SkSurface.h"
#include "gm.h"
#define RESIZE_FACTOR SkIntToScalar(4)
namespace skiagm {
class ImageFiltersScaledGM : public GM {
public:
ImageFiltersScaledGM() {
this->setBGColor(0x00000000);
}
protected:
SkString onShortName() override {
return SkString("imagefiltersscaled");
}
SkISize onISize() override {
return SkISize::Make(1428, 500);
}
void onOnceBeforeDraw() override {
fCheckerboard.reset(SkImage::NewFromBitmap(
sk_tool_utils::create_checkerboard_bitmap(64, 64, 0xFFA0A0A0, 0xFF404040, 8)));
fGradientCircle.reset(MakeGradientCircle(64, 64));
}
void onDraw(SkCanvas* canvas) override {
canvas->clear(SK_ColorBLACK);
SkAutoTUnref<SkImageFilter> gradient(SkImageSource::Create(fGradientCircle));
SkAutoTUnref<SkImageFilter> checkerboard(SkImageSource::Create(fCheckerboard));
SkAutoTUnref<SkShader> noise(SkPerlinNoiseShader::CreateFractalNoise(
SkDoubleToScalar(0.1), SkDoubleToScalar(0.05), 1, 0));
SkPoint3 pointLocation = SkPoint3::Make(0, 0, SkIntToScalar(10));
SkPoint3 spotLocation = SkPoint3::Make(SkIntToScalar(-10),
SkIntToScalar(-10),
SkIntToScalar(20));
SkPoint3 spotTarget = SkPoint3::Make(SkIntToScalar(40), SkIntToScalar(40), 0);
SkScalar spotExponent = SK_Scalar1;
SkScalar cutoffAngle = SkIntToScalar(15);
SkScalar kd = SkIntToScalar(2);
SkScalar surfaceScale = SkIntToScalar(1);
SkColor white(0xFFFFFFFF);
SkMatrix resizeMatrix;
resizeMatrix.setScale(RESIZE_FACTOR, RESIZE_FACTOR);
SkImageFilter* filters[] = {
SkBlurImageFilter::Create(SkIntToScalar(4), SkIntToScalar(4)),
SkDropShadowImageFilter::Create(SkIntToScalar(5), SkIntToScalar(10),
SkIntToScalar(3), SkIntToScalar(3), SK_ColorYELLOW,
SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode),
SkDisplacementMapEffect::Create(SkDisplacementMapEffect::kR_ChannelSelectorType,
SkDisplacementMapEffect::kR_ChannelSelectorType,
SkIntToScalar(12),
gradient.get(),
checkerboard.get()),
SkDilateImageFilter::Create(1, 1, checkerboard.get()),
SkErodeImageFilter::Create(1, 1, checkerboard.get()),
SkOffsetImageFilter::Create(SkIntToScalar(32), 0),
SkImageFilter::CreateMatrixFilter(resizeMatrix, kNone_SkFilterQuality),
SkRectShaderImageFilter::Create(noise),
SkLightingImageFilter::CreatePointLitDiffuse(pointLocation, white, surfaceScale, kd),
SkLightingImageFilter::CreateSpotLitDiffuse(spotLocation, spotTarget, spotExponent,
cutoffAngle, white, surfaceScale, kd),
};
SkVector scales[] = {
SkVector::Make(SkScalarInvert(2), SkScalarInvert(2)),
SkVector::Make(SkIntToScalar(1), SkIntToScalar(1)),
SkVector::Make(SkIntToScalar(1), SkIntToScalar(2)),
SkVector::Make(SkIntToScalar(2), SkIntToScalar(1)),
SkVector::Make(SkIntToScalar(2), SkIntToScalar(2)),
};
SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
SkScalar margin = SkIntToScalar(16);
SkRect bounds = r;
bounds.outset(margin, margin);
for (size_t j = 0; j < SK_ARRAY_COUNT(scales); ++j) {
canvas->save();
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
SkPaint paint;
paint.setColor(SK_ColorBLUE);
paint.setImageFilter(filters[i]);
paint.setAntiAlias(true);
canvas->save();
canvas->scale(scales[j].fX, scales[j].fY);
Reland of Implement canComputeFastBounds() for image filters. (patchset #1 id:1 of https://codereview.chromium.org/1300403003/ ) Reason for revert: The Mac compile issue was fixed here: https://chromium.googlesource.com/chromium/src/+/fdd331a42ae0b9a6909a121020735161ab61c6e5 Original issue's description: > Revert of Implement canComputeFastBounds() for image filters. (patchset #8 id:130001 of https://codereview.chromium.org/1296943002/ ) > > Reason for revert: > This causes a syntax error. > > http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_compile_dbg_ng/builds/87819/steps/compile%20%28with%20patch%29/logs/stdio > > Original issue's description: > > Implement canComputeFastBounds() for image filters. > > > > Image filters have never implemented this check, which means that > > filters which affect transparent black falsely claim they can compute > > their bounds. > > > > Implemented an affectsTransparentBlack() virtual for image > > filters, and a similar helper function for color filters. > > > > This will affect the following GMs: imagefiltersscaled > > (lighting, perlin noise now filter to clip), > > colorfilterimagefilter (new test case), imagefiltersclipped > > (perlin noise now filters to clip). > > > > Note: I de-inlined SkPaint::canComputeFastBounds() to avoid adding > > a dependency from SkPaint.h to SkImageFilter.h.h. Skia benches show > > no impact from this change, but will watch the perf bots carefully. > > > > BUG=4212 > > > > Committed: https://skia.googlesource.com/skia/+/915881fe743f9a789037695f543bc6ea189cd0cb > > TBR=reed@google.com,senorblanco@chromium.org > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > BUG=4212 > > Committed: https://skia.googlesource.com/skia/+/12d8472d31ea5edb636d7d5214db253570115c40 TBR=reed@google.com,herb@google.com NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=4212 Review URL: https://codereview.chromium.org/1301823005
2015-08-20 18:10:41 +00:00
canvas->clipRect(r);
if (5 == i) {
canvas->translate(SkIntToScalar(-32), 0);
} else if (6 == i) {
canvas->scale(SkScalarInvert(RESIZE_FACTOR),
SkScalarInvert(RESIZE_FACTOR));
}
canvas->drawCircle(r.centerX(), r.centerY(), r.width()*2/5, paint);
canvas->restore();
canvas->translate(r.width() * scales[j].fX + margin, 0);
}
canvas->restore();
canvas->translate(0, r.height() * scales[j].fY + margin);
}
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
filters[i]->unref();
}
}
private:
static SkImage* MakeGradientCircle(int width, int height) {
SkScalar x = SkIntToScalar(width / 2);
SkScalar y = SkIntToScalar(height / 2);
SkScalar radius = SkScalarMul(SkMinScalar(x, y), SkIntToScalar(4) / SkIntToScalar(5));
SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterN32Premul(width, height));
SkCanvas* canvas = surface->getCanvas();
canvas->clear(0x00000000);
SkColor colors[2];
colors[0] = SK_ColorWHITE;
colors[1] = SK_ColorBLACK;
SkAutoTUnref<SkShader> shader(
SkGradientShader::CreateRadial(SkPoint::Make(x, y), radius, colors, nullptr, 2,
SkShader::kClamp_TileMode)
);
SkPaint paint;
paint.setShader(shader);
canvas->drawCircle(x, y, radius, paint);
return surface->newImageSnapshot();
}
SkAutoTUnref<SkImage> fCheckerboard, fGradientCircle;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new ImageFiltersScaledGM;)
}