154 lines
5.2 KiB
C++
154 lines
5.2 KiB
C++
/*
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* Copyright 2015 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/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkImageInfo.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.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/core/SkTypes.h"
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#include "include/effects/SkGradientShader.h"
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#include "include/utils/SkRandom.h"
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#include "src/core/SkMathPriv.h"
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static sk_sp<SkImage> makebm(int w, int h) {
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SkImageInfo info = SkImageInfo::MakeN32Premul(w, h);
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auto surface(SkSurface::MakeRaster(info));
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SkCanvas* canvas = surface->getCanvas();
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const SkScalar wScalar = SkIntToScalar(w);
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const SkScalar hScalar = SkIntToScalar(h);
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const SkPoint pt = { wScalar / 2, hScalar / 2 };
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const SkScalar radius = 4 * std::max(wScalar, hScalar);
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constexpr SkColor colors[] = { SK_ColorRED, SK_ColorYELLOW,
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SK_ColorGREEN, SK_ColorMAGENTA,
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SK_ColorBLUE, SK_ColorCYAN,
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SK_ColorRED};
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constexpr SkScalar pos[] = {0,
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SK_Scalar1 / 6,
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2 * SK_Scalar1 / 6,
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3 * SK_Scalar1 / 6,
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4 * SK_Scalar1 / 6,
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5 * SK_Scalar1 / 6,
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SK_Scalar1};
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SkASSERT(SK_ARRAY_COUNT(colors) == SK_ARRAY_COUNT(pos));
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SkPaint paint;
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SkRect rect = SkRect::MakeWH(wScalar, hScalar);
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SkMatrix mat = SkMatrix::I();
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for (int i = 0; i < 4; ++i) {
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paint.setShader(SkGradientShader::MakeRadial(
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pt, radius,
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colors, pos,
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SK_ARRAY_COUNT(colors),
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SkTileMode::kRepeat,
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0, &mat));
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canvas->drawRect(rect, paint);
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rect.inset(wScalar / 8, hScalar / 8);
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mat.postScale(SK_Scalar1 / 4, SK_Scalar1 / 4);
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}
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return surface->makeImageSnapshot();
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}
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constexpr int gSize = 1024;
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constexpr int gSurfaceSize = 2048;
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// This GM calls drawImageRect several times using the same texture. This is intended to exercise
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// combining GrDrawOps during these calls.
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class DrawMiniBitmapRectGM : public skiagm::GM {
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public:
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DrawMiniBitmapRectGM(bool antiAlias) : fAA(antiAlias) {
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fName.set("drawminibitmaprect");
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if (fAA) {
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fName.appendf("_aa");
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}
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}
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protected:
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SkString onShortName() override { return fName; }
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SkISize onISize() override { return SkISize::Make(gSize, gSize); }
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void onDraw(SkCanvas* canvas) override {
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if (nullptr == fImage) {
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fImage = makebm(gSurfaceSize, gSurfaceSize);
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}
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const SkRect dstRect = { 0, 0, SkIntToScalar(64), SkIntToScalar(64)};
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const int kMaxSrcRectSize = 1 << (SkNextLog2(gSurfaceSize) + 2);
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constexpr int kPadX = 30;
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constexpr int kPadY = 40;
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int rowCount = 0;
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canvas->translate(SkIntToScalar(kPadX), SkIntToScalar(kPadY));
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canvas->save();
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SkRandom random;
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SkPaint paint;
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paint.setAntiAlias(fAA);
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for (int w = 1; w <= kMaxSrcRectSize; w *= 3) {
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for (int h = 1; h <= kMaxSrcRectSize; h *= 3) {
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const SkIRect srcRect =
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SkIRect::MakeXYWH((gSurfaceSize - w) / 2, (gSurfaceSize - h) / 2, w, h);
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canvas->save();
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switch (random.nextU() % 3) {
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case 0:
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canvas->rotate(random.nextF() * 10.f);
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break;
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case 1:
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canvas->rotate(-random.nextF() * 10.f);
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break;
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case 2:
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// rect stays rect
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break;
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}
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canvas->drawImageRect(fImage.get(), SkRect::Make(srcRect), dstRect,
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SkSamplingOptions(), &paint,
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SkCanvas::kFast_SrcRectConstraint);
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canvas->restore();
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canvas->translate(dstRect.width() + SK_Scalar1 * kPadX, 0);
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++rowCount;
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if ((dstRect.width() + 2 * kPadX) * rowCount > gSize) {
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canvas->restore();
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canvas->translate(0, dstRect.height() + SK_Scalar1 * kPadY);
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canvas->save();
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rowCount = 0;
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}
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}
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}
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canvas->restore();
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}
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private:
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bool fAA;
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sk_sp<SkImage> fImage;
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SkString fName;
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using INHERITED = skiagm::GM;
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};
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DEF_GM( return new DrawMiniBitmapRectGM(true); )
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DEF_GM( return new DrawMiniBitmapRectGM(false); )
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