130 lines
4.6 KiB
C++
130 lines
4.6 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkBlendMode.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkColorSpace.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPicture.h"
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#include "include/core/SkPictureRecorder.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkShader.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkSurface.h"
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#include "include/core/SkTileMode.h"
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#include "include/effects/SkGradientShader.h"
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static void draw(SkCanvas* canvas, int width, int height, SkColor colors[2]) {
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const SkPoint center = { SkIntToScalar(width)/2, SkIntToScalar(height)/2 };
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const SkScalar radius = 40;
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SkPaint paint;
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paint.setShader(SkGradientShader::MakeRadial(center, radius, colors, nullptr, 2,
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SkTileMode::kMirror));
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paint.setBlendMode(SkBlendMode::kSrc);
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canvas->drawPaint(paint);
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}
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static sk_sp<SkImage> make_raster_image(int width, int height, SkColor colors[2]) {
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auto surface(SkSurface::MakeRasterN32Premul(width, height));
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draw(surface->getCanvas(), width, height, colors);
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return surface->makeImageSnapshot();
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}
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static sk_sp<SkImage> make_picture_image(int width, int height, SkColor colors[2]) {
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SkPictureRecorder recorder;
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draw(recorder.beginRecording(SkRect::MakeIWH(width, height)), width, height, colors);
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return SkImage::MakeFromPicture(recorder.finishRecordingAsPicture(),
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{width, height}, nullptr, nullptr,
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SkImage::BitDepth::kU8,
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SkColorSpace::MakeSRGB());
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}
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typedef sk_sp<SkImage> (*ImageMakerProc)(int width, int height, SkColor colors[2]);
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static void show_image(SkCanvas* canvas, int width, int height, SkColor colors[2],
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ImageMakerProc proc) {
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sk_sp<SkImage> image(proc(width, height, colors));
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SkPaint borderPaint;
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borderPaint.setStyle(SkPaint::kStroke_Style);
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SkRect dstRect = SkRect::MakeWH(128.f, 128.f);
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canvas->save();
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canvas->clipRect(dstRect);
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canvas->drawImage(image, 0, 0);
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canvas->restore();
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canvas->drawRect(dstRect, borderPaint);
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dstRect.offset(SkIntToScalar(150), 0);
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int hw = width / 2;
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int hh = height / 2;
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SkRect subset = SkRect::MakeLTRB(hw - 64, hh - 32, hw + 64, hh + 32);
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canvas->drawImageRect(image, subset, dstRect, SkSamplingOptions(), nullptr,
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SkCanvas::kStrict_SrcRectConstraint);
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canvas->drawRect(dstRect, borderPaint);
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dstRect.offset(SkIntToScalar(150), 0);
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canvas->drawImageRect(image, dstRect, SkSamplingOptions(), nullptr);
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canvas->drawRect(dstRect, borderPaint);
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}
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class VeryLargeBitmapGM : public skiagm::GM {
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ImageMakerProc fProc;
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const char* fName;
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public:
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VeryLargeBitmapGM(ImageMakerProc proc, const char name[]) : fProc(proc), fName(name) {}
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private:
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SkString onShortName() override { return SkString(fName); }
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SkISize onISize() override { return {500, 600}; }
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void onDraw(SkCanvas* canvas) override {
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int veryBig = 65*1024; // 64K < size
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int big = 33*1024; // 32K < size < 64K
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// smaller than many max texture sizes, but large enough to gpu-tile for memory reasons.
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int medium = 5*1024;
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int small = 150;
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SkColor colors[2];
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canvas->translate(SkIntToScalar(10), SkIntToScalar(10));
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colors[0] = SK_ColorRED;
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colors[1] = SK_ColorGREEN;
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show_image(canvas, small, small, colors, fProc);
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canvas->translate(0, SkIntToScalar(150));
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colors[0] = SK_ColorBLUE;
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colors[1] = SK_ColorMAGENTA;
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show_image(canvas, big, small, colors, fProc);
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canvas->translate(0, SkIntToScalar(150));
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colors[0] = SK_ColorMAGENTA;
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colors[1] = SK_ColorYELLOW;
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show_image(canvas, medium, medium, colors, fProc);
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canvas->translate(0, SkIntToScalar(150));
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colors[0] = SK_ColorGREEN;
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colors[1] = SK_ColorYELLOW;
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// This used to be big enough that we didn't draw on CPU, but now we do.
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show_image(canvas, veryBig, small, colors, fProc);
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}
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};
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DEF_GM( return new VeryLargeBitmapGM(make_raster_image, "verylargebitmap"); )
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DEF_GM( return new VeryLargeBitmapGM(make_picture_image, "verylarge_picture_image"); )
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