AuroraMiddleware/skia2
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
fcea9a9161
skia2/gm/savelayer.cpp
Ben Wagner 7fde8e1728 IWYU for gms. 
This almost gets gms to be iwyu clean. The last bit is around gm.cpp
and the tracing framework and its use of atomic. Will also need a way
of keeping things from regressing, which is difficult due to needing to
do this outside-in.

Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2019-05-02 17:48:53 +00:00

443 lines
15 KiB
C++
Raw Blame History

/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkBlendMode.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkColorSpace.h"
#include "include/core/SkFont.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageFilter.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkMaskFilter.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPicture.h"
#include "include/core/SkPictureRecorder.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkSurface.h"
#include "include/core/SkTextBlob.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkBlurImageFilter.h"
#include "include/effects/SkGradientShader.h"
#include "include/effects/SkShaderMaskFilter.h"
#include "include/utils/SkRandom.h"
#include "src/core/SkCanvasPriv.h"
#include "tools/Resources.h"
#include "tools/ToolUtils.h"
#include <string.h>
#include <initializer_list>
// This GM tests out the deprecated Android-specific unclipped saveLayer "feature".
// In particular, it attempts to compare the performance of unclipped saveLayers with alternatives.
static void save_layer_unclipped(SkCanvas* canvas,
SkScalar l, SkScalar t, SkScalar r, SkScalar b) {
SkRect rect = SkRect::MakeLTRB(l, t, r, b);
canvas->saveLayer({ &rect, nullptr, nullptr, nullptr, nullptr,
(SkCanvas::SaveLayerFlags) SkCanvasPriv::kDontClipToLayer_SaveLayerFlag });
}
static void do_draw(SkCanvas* canvas) {
SkPaint paint;
SkRandom rand;
for (int i = 0; i < 20; ++i) {
paint.setColor(ToolUtils::color_to_565(rand.nextU() | (0xFF << 24)));
canvas->drawRect({ 15, 15, 290, 40 }, paint);
canvas->translate(0, 30);
}
}
class UnclippedSaveLayerGM : public skiagm::GM {
public:
enum class Mode {
kClipped,
kUnclipped
};
UnclippedSaveLayerGM(Mode mode) : fMode(mode) { this->setBGColor(SK_ColorWHITE); }
protected:
bool runAsBench() const override { return true; }
SkString onShortName() override {
if (Mode::kClipped == fMode) {
return SkString("savelayer_unclipped");
} else {
SkASSERT(Mode::kUnclipped == fMode);
return SkString("savelayer_clipped");
}
}
SkISize onISize() override { return SkISize::Make(320, 640); }
void onDraw(SkCanvas* canvas) override {
const SkScalar L = 10;
const SkScalar T = 10;
const SkScalar R = 310;
const SkScalar B = 630;
canvas->clipRect({ L, T, R, B });
for (int i = 0; i < 100; ++i) {
SkAutoCanvasRestore acr(canvas, true);
if (Mode::kClipped == fMode) {
save_layer_unclipped(canvas, L, T, R, T + 20);
save_layer_unclipped(canvas, L, B - 20, R, B);
} else {
SkASSERT(Mode::kUnclipped == fMode);
canvas->saveLayer({ L, T, R, B }, nullptr);
}
do_draw(canvas);
}
}
private:
Mode fMode;
typedef skiagm::GM INHERITED;
};
DEF_GM(return new UnclippedSaveLayerGM(UnclippedSaveLayerGM::Mode::kClipped);)
DEF_GM(return new UnclippedSaveLayerGM(UnclippedSaveLayerGM::Mode::kUnclipped);)
DEF_SIMPLE_GM(picture_savelayer, canvas, 320, 640) {
SkPaint paint1, paint2, paint3;
paint1.setAlphaf(0.5f);
paint2.setAlphaf(0.25f);
paint3.setColor(0xFFFF0000);
SkRect rect1{40, 5, 80, 70}, rect2{5, 40, 70, 80}, rect3{10, 10, 70, 70};
// In the future, we might also test the clipped case by allowing i = 0
for(int i = 1; i < 2; ++i) {
canvas->translate(100 * i, 0);
auto flag = i ?
(SkCanvas::SaveLayerFlags) SkCanvasPriv::kDontClipToLayer_SaveLayerFlag : 0;
canvas->saveLayer({ &rect1, &paint1, nullptr, nullptr, nullptr, flag});
canvas->saveLayer({ &rect2, &paint2, nullptr, nullptr, nullptr, flag});
canvas->drawRect(rect3, paint3);
canvas->restore();
canvas->restore();
}
};
// Test kInitWithPrevious_SaveLayerFlag by drawing an image, save a layer with the flag, which
// should seed the layer with the image (from below). Then we punch a hole in the layer and
// restore with kPlus mode, which should show the mandrill super-bright on the outside, but
// normal where we punched the hole.
DEF_SIMPLE_GM(savelayer_initfromprev, canvas, 256, 256) {
canvas->drawImage(GetResourceAsImage("images/mandrill_256.png"), 0, 0, nullptr);
SkCanvas::SaveLayerRec rec;
SkPaint paint;
paint.setBlendMode(SkBlendMode::kPlus);
rec.fSaveLayerFlags = SkCanvas::kInitWithPrevious_SaveLayerFlag;
rec.fPaint = &paint;
canvas->saveLayer(rec);
paint.setBlendMode(SkBlendMode::kClear);
canvas->drawCircle(128, 128, 96, paint);
canvas->restore();
};
static void draw_mask(SkCanvas* canvas, int size) {
const SkScalar cx = size * SK_ScalarHalf,
cy = cx;
const SkColor colors[] = { 0x00000000, 0xffff0000, 0x00000000, 0xffff0000, 0x00000000,
0xffff0000, 0x00000000, 0xffff0000, 0x00000000 };
SkPaint paint;
paint.setAntiAlias(true);
paint.setShader(SkGradientShader::MakeSweep(cx, cy, colors, nullptr, SK_ARRAY_COUNT(colors)));
canvas->drawPaint(paint);
paint.setShader(SkGradientShader::MakeRadial({cx, cy}, size / 4, colors, nullptr, 2,
SkTileMode::kClamp));
canvas->drawCircle(cx, cy, size / 4, paint);
}
DEF_SIMPLE_GM(savelayer_clipmask, canvas, 1200, 1200) {
static constexpr int kSize = 100;
static constexpr SkRect kLayerBounds = { kSize * 0.25f, kSize * 0.25f,
kSize * 0.75f, kSize * 0.75f };
static constexpr struct {
const SkRect* bounds;
const SkScalar matrix[9];
} kConfigs[] = {
{ nullptr, { 1 , 0 , 0, 0 , 1 , 0, 0, 0, 1 } },
{ nullptr, { 2 , 0 , 0, 0 , 2 , 0, 0, 0, 1 } },
{ nullptr, { 2 , 0 , -50, 0 , 2 , -50, 0, 0, 1 } },
{ nullptr, { 0.707f, -0.707f, 50, 0.707f, 0.707f, -20, 0, 0, 1 } },
{ nullptr, { 0.5f , 0 , 25, 0 , 0.5f , 25, 0, 0, 1 } },
{ &kLayerBounds, { 1 , 0 , 0, 0 , 1 , 0, 0, 0, 1 } },
{ &kLayerBounds, { 2 , 0 , 0, 0 , 2 , 0, 0, 0, 1 } },
{ &kLayerBounds, { 2 , 0 , -50, 0 , 2 , -50, 0, 0, 1 } },
{ &kLayerBounds, { 0.707f, -0.707f, 50, 0.707f, 0.707f, -20, 0, 0, 1 } },
{ &kLayerBounds, { 0.5f , 0 , 25, 0 , 0.5f , 25, 0, 0, 1 } },
};
using MaskMakerFunc = sk_sp<SkImage> (*)(int size);
static const MaskMakerFunc kMaskMakers[] = {
[](int size) -> sk_sp<SkImage> {
auto surf = SkSurface::MakeRaster(SkImageInfo::MakeA8(size, size));
draw_mask(surf->getCanvas(), size);
return surf->makeImageSnapshot();
},
[](int size) -> sk_sp<SkImage> {
auto surf = SkSurface::MakeRasterN32Premul(size, size);
draw_mask(surf->getCanvas(), size);
return surf->makeImageSnapshot();
},
[](int size) -> sk_sp<SkImage> {
SkPictureRecorder recorder;
draw_mask(recorder.beginRecording(size, size), size);
return SkImage::MakeFromPicture(recorder.finishRecordingAsPicture(),
SkISize::Make(size, size),
nullptr, nullptr,
SkImage::BitDepth::kU8,
SkColorSpace::MakeSRGB());
}
};
using PaintMakerFunc = SkPaint (*)();
static const PaintMakerFunc kPaintMakers[] = {
[]() -> SkPaint { return SkPaint(); },
[]() -> SkPaint {
SkPaint p; p.setImageFilter(SkBlurImageFilter::Make(2, 2, nullptr)); return p;
},
[]() -> SkPaint { SkPaint p; p.setBlendMode(SkBlendMode::kSrcOut); return p; },
};
canvas->drawColor(0xffcccccc);
SkMatrix clipMatrix;
SkCanvas::SaveLayerRec rec;
rec.fClipMatrix = &clipMatrix;
for (const auto& paintMaker : kPaintMakers) {
auto layerPaint = paintMaker();
rec.fPaint = &layerPaint;
for (const auto& maskMaker : kMaskMakers) {
sk_sp<SkImage> mask = maskMaker(kSize);
rec.fClipMask = mask.get();
canvas->save();
for (const auto cfg : kConfigs) {
rec.fBounds = cfg.bounds;
clipMatrix.set9(cfg.matrix);
canvas->saveLayer(rec);
SkPaint paint;
paint.setColor(0xff0000ff);
canvas->drawRect(SkRect::MakeWH(50, 50), paint);
paint.setColor(0xffff0000);
canvas->drawRect(SkRect::MakeXYWH(50, 0, 50, 50), paint);
paint.setColor(0xff00ff00);
canvas->drawRect(SkRect::MakeXYWH(50, 50, 50, 50), paint);
paint.setColor(0xffffff00);
canvas->drawRect(SkRect::MakeXYWH(0, 50, 50, 50), paint);
canvas->restore();
canvas->translate(120, 0);
}
canvas->restore();
canvas->translate(0, 120);
}
}
}
DEF_SIMPLE_GM(savelayer_coverage, canvas, 500, 500) {
canvas->saveLayer(nullptr, nullptr);
SkRect r = { 0, 0, 200, 200 };
SkPaint layerPaint;
layerPaint.setBlendMode(SkBlendMode::kModulate);
auto image = GetResourceAsImage("images/mandrill_128.png");
auto proc = [layerPaint](SkCanvas* canvas, SkCanvas::SaveLayerRec& rec) {
SkPaint paint;
paint.setColor(SK_ColorRED);
canvas->saveLayer(rec);
canvas->drawCircle(100, 100, 50, paint);
paint.setColor(0x8800FF00);
canvas->drawRect({10, 90, 190, 110}, paint);
canvas->restore();
};
const int yflags[] = { 0, SkCanvas::kInitWithPrevious_SaveLayerFlag };
for (int y = 0; y <= 1; ++y) {
const int xflags[] = { 0, SkCanvas::kMaskAgainstCoverage_EXPERIMENTAL_DONT_USE_SaveLayerFlag };
for (int x = 0; x <= 1; ++x) {
canvas->save();
canvas->translate(x * 200.f, y * 200.f);
SkCanvas::SaveLayerRec rec(&r, &layerPaint, yflags[y] | xflags[x]);
canvas->drawImageRect(image, r, nullptr);
proc(canvas, rec);
canvas->restore();
}
}
canvas->restore();
}
DEF_SIMPLE_GM(savelayer_clipmask_maskfilter, canvas, 500, 500) {
// Offscreen surface for making the clip mask and mask filter images
auto surf = SkSurface::MakeRaster(SkImageInfo::MakeA8(100, 100));
SkPaint maskPaint;
maskPaint.setColor(SK_ColorWHITE);
maskPaint.setAntiAlias(true);
// Draw a centered circle for the mask filter
surf->getCanvas()->clear(SK_ColorTRANSPARENT);
surf->getCanvas()->drawCircle(50.f, 50.f, 50.f, maskPaint);
auto maskFilterImage = surf->makeImageSnapshot();
sk_sp<SkMaskFilter> maskFilter = SkShaderMaskFilter::Make(maskFilterImage->makeShader());
// Cut out a cross for the clip mask
surf->getCanvas()->clear(SK_ColorTRANSPARENT);
surf->getCanvas()->drawRect(SkRect::MakeLTRB(0.f, 0.f, 40.f, 40.f), maskPaint);
surf->getCanvas()->drawRect(SkRect::MakeLTRB(60.f, 0.f, 100.f, 40.f), maskPaint);
surf->getCanvas()->drawRect(SkRect::MakeLTRB(0.f, 60.f, 40.f, 100.f), maskPaint);
surf->getCanvas()->drawRect(SkRect::MakeLTRB(60.f, 60.f, 100.f, 100.f), maskPaint);
auto clipMaskImage = surf->makeImageSnapshot();
SkMatrix clipMatrix = SkMatrix::I();
SkRect clipBounds = SkRect::MakeWH(100, 100);
// On the main canvas, save a 100x100 layer three times, applying clip mask, mask filter, or
// both, translating across the GM for each configuration.
canvas->clear(SK_ColorGRAY);
canvas->translate(25.f, 0.f);
// Clip mask only
SkCanvas::SaveLayerRec rec;
rec.fBounds = &clipBounds;
rec.fClipMask = clipMaskImage.get();
rec.fClipMatrix = &clipMatrix;
canvas->saveLayer(rec);
canvas->clear(SK_ColorWHITE);
canvas->restore();
canvas->translate(125.f, 0.f);
// Mask filter only
maskPaint.setMaskFilter(maskFilter);
rec.fClipMask = nullptr;
rec.fPaint = &maskPaint;
canvas->saveLayer(rec);
canvas->clear(SK_ColorWHITE);
canvas->restore();
canvas->translate(125.f, 0.f);
// Both
rec.fClipMask = clipMaskImage.get();
canvas->saveLayer(rec);
canvas->clear(SK_ColorWHITE);
canvas->restore();
}
static void draw_cell(SkCanvas* canvas, sk_sp<SkTextBlob> blob, SkColor c, SkScalar w, SkScalar h,
bool useDrawBehind) {
SkRect r = SkRect::MakeWH(w, h);
SkPaint p;
p.setColor(c);
p.setBlendMode(SkBlendMode::kSrc);
canvas->drawRect(r, p);
p.setBlendMode(SkBlendMode::kSrcOver);
const SkScalar margin = 80;
r.fLeft = w - margin;
// save the behind image
SkDEBUGCODE(int sc0 =) canvas->getSaveCount();
SkDEBUGCODE(int sc1 =) SkCanvasPriv::SaveBehind(canvas, &r);
SkDEBUGCODE(int sc2 =) canvas->getSaveCount();
SkASSERT(sc0 == sc1);
SkASSERT(sc0 + 1 == sc2);
// draw the foreground (including over the 'behind' section)
p.setColor(SK_ColorBLACK);
canvas->drawTextBlob(blob, 10, 30, p);
// draw the treatment
const SkPoint pts[] = { {r.fLeft,0}, {r.fRight, 0} };
const SkColor colors[] = { 0x88000000, 0x0 };
auto sh = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkTileMode::kClamp);
p.setShader(sh);
p.setBlendMode(SkBlendMode::kDstIn);
if (useDrawBehind) {
SkCanvasPriv::DrawBehind(canvas, p);
} else {
canvas->drawRect(r, p);
}
// this should restore the behind image
canvas->restore();
SkDEBUGCODE(int sc3 =) canvas->getSaveCount();
SkASSERT(sc3 == sc0);
// just outline where we expect the treatment to appear
p.reset();
p.setStyle(SkPaint::kStroke_Style);
p.setAlphaf(0.25f);
}
static void draw_list(SkCanvas* canvas, sk_sp<SkTextBlob> blob, bool useDrawBehind) {
SkAutoCanvasRestore acr(canvas, true);
SkRandom rand;
SkScalar w = 400;
SkScalar h = 40;
for (int i = 0; i < 8; ++i) {
SkColor c = rand.nextU(); // ensure we're opaque
c = (c & 0xFFFFFF) | 0x80000000;
draw_cell(canvas, blob, c, w, h, useDrawBehind);
canvas->translate(0, h);
}
}
DEF_SIMPLE_GM(save_behind, canvas, 830, 670) {
SkFont font;
font.setTypeface(ToolUtils::create_portable_typeface());
font.setSize(30);
const char text[] = "This is a very long line of text";
auto blob = SkTextBlob::MakeFromText(text, strlen(text), font);
for (bool useDrawBehind : {false, true}) {
canvas->save();
draw_list(canvas, blob, useDrawBehind);
canvas->translate(0, 350);
canvas->saveLayer({0, 0, 400, 320}, nullptr);
draw_list(canvas, blob, useDrawBehind);
canvas->restore();
canvas->restore();
canvas->translate(430, 0);
}
}
Reference in New Issue View Git Blame Copy Permalink